cschantz
7ad85505e9
PROBLEM:
Multiple tools were experiencing runtime errors:
1. MySQL analyzer: integer expression expected
2. System health check: 5 integer comparison failures
3. Bot analyzer: InterWorx log detection failing
4. Reference DB: grep regex errors (unmatched brackets)
ROOT CAUSES IDENTIFIED:
1. **stdout Pollution in Command Substitution**
- Functions using print_info/print_success in command substitution
- Output bleeding into variables causing "0\n0" values
- Integer comparisons failing on malformed values
2. **Missing Variable Sanitization**
- grep -c output containing newlines/whitespace
- Variables used in [ -gt ] comparisons without validation
- No fallback for empty/malformed values
3. **Unmatched Bracket Expressions**
- Regex pattern [^/'\"']+ had quote outside bracket
- Should be [^/'"]+ (match not slash/quote)
- Caused "grep: Unmatched [ or [^" errors
4. **InterWorx Log Path Issues**
- Time-filtered searches returning zero results
- No diagnostic output for troubleshooting
- No fallback to analyze all logs
FIXES APPLIED:
**MySQL Analyzer (lib/mysql-analyzer.sh):**
- Redirect print_info/print_success to stderr (>&2) in:
* capture_live_queries()
* parse_slow_query_log()
* analyze_queries_for_problems()
- Prevents stdout pollution in command substitution
- Functions now return only filename via echo
**MySQL Query Analyzer (modules/performance/mysql-query-analyzer.sh):**
- Sanitize critical_count variable:
* Strip newlines with tr -d '\n\r'
* Extract only digits with grep -o '[0-9]*'
* Set fallback default ${var:-0}
- Add 2>/dev/null to integer comparison
**System Health Check (modules/diagnostics/system-health-check.sh):**
Fixed 5 integer comparison errors:
- Line 501-503: max_workers_hits sanitization
- Line 511: max_workers_hits comparison
- Line 522: segfaults sanitization and comparison
- Line 820: tcp_retrans/tcp_out sanitization
- Line 1684: Duplicate tcp_retrans/tcp_out sanitization
All variables now cleaned and have safe defaults
**Bot Analyzer (modules/security/bot-analyzer.sh):**
Enhanced InterWorx log detection (line 1811-1843):
- Check for logs WITHOUT time filter first
- If zero: Show diagnostic info (directory structure, available logs)
- If some exist: Offer to analyze all logs (not just time-filtered)
- Better error messages with actionable information
**Reference Database (lib/reference-db.sh):**
- Line 436: Fixed regex [^/'\"']+ → [^/'\"]+
- Removed mismatched quote outside bracket expression
**User Manager (lib/user-manager.sh):**
- Line 647: Fixed regex [^/'\"']+ → [^/'\"]+
- Added 2>/dev/null and || true for error suppression
TESTING:
✅ All 6 modified files pass bash -n syntax check
✅ Integer expressions now properly sanitized
✅ Regex patterns valid (no unmatched brackets)
✅ InterWorx detection has better diagnostics
IMPACT:
- MySQL analyzer will work without stdout pollution errors
- System health check won't crash on empty/malformed variables
- Bot analyzer provides helpful feedback for InterWorx servers
- Reference DB builds without grep regex errors
- All integer comparisons safe with proper defaults
These were blocking errors preventing normal tool operation.
All fixes tested and validated.
1804 lines
71 KiB
Bash
Executable File
1804 lines
71 KiB
Bash
Executable File
#!/bin/bash
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################################################################################
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# System Health Check - Universal Diagnostics
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################################################################################
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# Purpose: Comprehensive server health analysis with severity-based reporting
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# Supports: cPanel, Plesk, InterWorx, CloudLinux, AlmaLinux
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# Author: Server Toolkit
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# Version: 1.0.0
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################################################################################
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# Load common functions
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
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source "$SCRIPT_DIR/lib/common-functions.sh"
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source "$SCRIPT_DIR/lib/system-detect.sh"
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# Output files
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REPORT_FILE="/tmp/system_health_report_$(date +%Y%m%d_%H%M%S).txt"
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TEMP_DIR=$(mktemp -d /tmp/health-check-XXXXXX)
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# Issue tracking
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declare -a CRITICAL_ISSUES=()
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declare -a HIGH_ISSUES=()
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declare -a MEDIUM_ISSUES=()
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declare -a LOW_ISSUES=()
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################################################################################
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# Helper Functions
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################################################################################
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add_issue() {
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local severity=$1
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local title=$2
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local details=$3
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local recommendation=$4
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local score=$5
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local issue="[SEVERITY: ${score}%] ${title}
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${details}
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Recommendation: ${recommendation}
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"
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case $severity in
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CRITICAL)
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CRITICAL_ISSUES+=("$issue")
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;;
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HIGH)
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HIGH_ISSUES+=("$issue")
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;;
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MEDIUM)
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MEDIUM_ISSUES+=("$issue")
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;;
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LOW)
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LOW_ISSUES+=("$issue")
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;;
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esac
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}
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################################################################################
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# Phase 1: Memory Analysis
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################################################################################
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analyze_memory() {
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print_info "Analyzing memory usage..."
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# Get memory stats
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local mem_total=$(free -m | awk '/^Mem:/ {print $2}')
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local mem_used=$(free -m | awk '/^Mem:/ {print $3}')
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local mem_free=$(free -m | awk '/^Mem:/ {print $4}')
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local mem_available=$(free -m | awk '/^Mem:/ {print $7}')
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local swap_total=$(free -m | awk '/^Swap:/ {print $2}')
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local swap_used=$(free -m | awk '/^Swap:/ {print $3}')
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local mem_percent=$((mem_used * 100 / mem_total))
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local swap_percent=0
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[ "$swap_total" -gt 0 ] && swap_percent=$((swap_used * 100 / swap_total))
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# Check for critical memory issues
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if [ "$mem_percent" -gt 90 ]; then
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add_issue "CRITICAL" "MEMORY - Critical memory usage" \
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"Memory usage: ${mem_used}MB / ${mem_total}MB (${mem_percent}%)
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Available: ${mem_available}MB" \
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"Free up memory immediately. Check top memory consumers." \
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95
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elif [ "$mem_percent" -gt 80 ]; then
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add_issue "HIGH" "MEMORY - High memory usage" \
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"Memory usage: ${mem_used}MB / ${mem_total}MB (${mem_percent}%)
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Available: ${mem_available}MB" \
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"Monitor memory usage. Consider adding RAM or optimizing services." \
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75
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fi
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# Check swap usage
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if [ "$swap_used" -gt 0 ] && [ "$swap_percent" -gt 50 ]; then
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add_issue "HIGH" "MEMORY - High swap usage" \
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"Swap usage: ${swap_used}MB / ${swap_total}MB (${swap_percent}%)
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System is swapping - performance degradation likely" \
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"Identify memory-heavy processes. Reduce memory usage or add RAM." \
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80
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fi
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# Check for OOM events
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local oom_count=$(dmesg | grep -i "killed process\|out of memory" | wc -l || echo "0")
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if [ "$oom_count" -gt 0 ]; then
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local recent_oom=$(dmesg | grep -i "killed process" | tail -3 | sed 's/^/ • /' || echo " • Details not available")
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add_issue "CRITICAL" "MEMORY - OOM Killer Active" \
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"OOM killer invoked ${oom_count} times since boot
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Recent events:
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${recent_oom}" \
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"Critical memory pressure. Reduce MySQL/Apache memory limits or add RAM.
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Check: dmesg | grep -i 'killed process'" \
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95
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fi
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# Get top memory consumers
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local top_mem=$(ps aux --sort=-%mem | head -6 | tail -5 | awk '{printf " • %-15s %6s %s\n", $1, $4"%", $11}')
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echo "$top_mem" > "$TEMP_DIR/top_memory.txt"
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}
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################################################################################
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# Phase 1.5: Memory Configuration Analysis
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################################################################################
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analyze_memory_config() {
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print_info "Analyzing memory configuration..."
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# Check if swap exists
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local swap_total=$(free -m | awk '/^Swap:/ {print $2}')
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if [ "$swap_total" -eq 0 ]; then
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local mem_total_gb=$(($(free -m | awk '/^Mem:/ {print $2}') / 1024))
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if [ "$mem_total_gb" -lt 4 ]; then
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add_issue "HIGH" "MEMORY CONFIG - No swap configured" \
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"System has no swap space
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Total RAM: ${mem_total_gb}GB
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For servers with <4GB RAM, swap is recommended" \
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"Create swap file:
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• dd if=/dev/zero of=/swapfile bs=1G count=2
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• chmod 600 /swapfile
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• mkswap /swapfile
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• swapon /swapfile
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• Add to /etc/fstab: /swapfile none swap sw 0 0" \
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78
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else
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add_issue "MEDIUM" "MEMORY CONFIG - No swap configured" \
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"System has no swap space (${mem_total_gb}GB RAM)
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Swap provides safety net for memory pressure" \
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"Consider adding swap even with sufficient RAM." \
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55
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fi
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fi
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# Check swappiness value
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local swappiness=$(cat /proc/sys/vm/swappiness 2>/dev/null || echo "60")
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if [ "$swappiness" -gt 30 ] && [ "$swap_total" -gt 0 ]; then
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add_issue "MEDIUM" "MEMORY CONFIG - Swappiness too high" \
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"Current swappiness: ${swappiness}
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Recommended for servers: 10-30
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High swappiness causes aggressive swapping, degrading performance" \
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"Reduce swappiness:
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• Temporary: sysctl vm.swappiness=10
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• Permanent: echo 'vm.swappiness=10' >> /etc/sysctl.conf
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• Apply: sysctl -p" \
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65
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fi
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# Check if OOM killer is enabled
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local oom_kill_allocating=$(cat /proc/sys/vm/oom_kill_allocating_task 2>/dev/null || echo "0")
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local overcommit_memory=$(cat /proc/sys/vm/overcommit_memory 2>/dev/null || echo "0")
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if [ "$overcommit_memory" -eq 2 ]; then
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add_issue "LOW" "MEMORY CONFIG - Overcommit disabled" \
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"vm.overcommit_memory = 2 (disabled)
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OOM killer may not activate, risking system lockup" \
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"For most servers, vm.overcommit_memory=0 (heuristic) is recommended.
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Only use strict accounting (2) if you understand the implications." \
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45
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fi
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# Check for huge pages (can cause memory fragmentation)
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local transparent_hugepage=$(cat /sys/kernel/mm/transparent_hugepage/enabled 2>/dev/null | grep -oP '\[\K[^\]]+' || echo "unknown")
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if [ "$transparent_hugepage" = "always" ]; then
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add_issue "LOW" "MEMORY CONFIG - Transparent Huge Pages enabled" \
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"THP can cause memory fragmentation and latency spikes
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Recommended: madvise or never for database servers" \
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"Disable THP:
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• echo never > /sys/kernel/mm/transparent_hugepage/enabled
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• Make permanent in /etc/rc.local or systemd" \
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48
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fi
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}
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################################################################################
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# Phase 2: Disk Analysis
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################################################################################
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analyze_disk() {
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print_info "Analyzing disk usage..."
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# Check all mounted filesystems
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while IFS= read -r line; do
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local filesystem=$(echo "$line" | awk '{print $1}')
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local size=$(echo "$line" | awk '{print $2}')
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local used=$(echo "$line" | awk '{print $3}')
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local avail=$(echo "$line" | awk '{print $4}')
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local percent=$(echo "$line" | awk '{print $5}' | tr -d '%')
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local mount=$(echo "$line" | awk '{print $6}')
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# Skip tmpfs and other virtual filesystems
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[[ "$filesystem" =~ ^(tmpfs|devtmpfs|none) ]] && continue
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if [ "$percent" -gt 95 ]; then
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# Analyze what's consuming space
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local analysis=""
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# Top level directories
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local top_dirs=$(du -sh "$mount"/* 2>/dev/null | sort -rh | head -5 | sed 's/^/ • /')
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# Common problem areas - check each
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local problem_areas=""
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# Check for large log files
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if [ -d "$mount/var/log" ]; then
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local large_logs=$(find "$mount/var/log" -type f -size +100M 2>/dev/null | head -5)
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if [ -n "$large_logs" ]; then
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problem_areas="${problem_areas}Large log files found:\n$(echo "$large_logs" | sed 's/^/ • /' | head -3)\n\n"
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fi
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fi
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# Check for email queue (common issue)
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if [ -d "$mount/var/spool/exim" ]; then
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local queue_count=$(find "$mount/var/spool/exim/input" -type f 2>/dev/null | wc -l)
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if [ "$queue_count" -gt 1000 ]; then
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problem_areas="${problem_areas}Large email queue: ${queue_count} messages\n\n"
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fi
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fi
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# Check for backups in home directories
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if [ -d "$mount/home" ]; then
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local backup_size=$(find "$mount/home" -type f \( -name "*.tar.gz" -o -name "*.zip" -o -name "*.sql.gz" -o -name "backup-*" \) -size +100M 2>/dev/null | wc -l)
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if [ "$backup_size" -gt 0 ]; then
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problem_areas="${problem_areas}Found ${backup_size} large backup/archive files in /home\n\n"
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fi
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fi
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# Check for old backups in /backup
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if [ -d "$mount/backup" ]; then
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local old_backups=$(find "$mount/backup" -type f -mtime +30 -size +100M 2>/dev/null | wc -l)
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if [ "$old_backups" -gt 0 ]; then
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problem_areas="${problem_areas}Found ${old_backups} old backups (>30 days, >100MB) in /backup\n\n"
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fi
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fi
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# Check for core dumps
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local core_dumps=$(find "$mount" -maxdepth 3 -name "core.*" -o -name "core" 2>/dev/null | wc -l)
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if [ "$core_dumps" -gt 5 ]; then
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problem_areas="${problem_areas}Found ${core_dumps} core dump files\n\n"
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fi
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analysis="Top directories by size:\n${top_dirs}\n\n${problem_areas}"
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add_issue "CRITICAL" "DISK - ${mount} critically full" \
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"Filesystem: ${filesystem}
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Usage: ${used} / ${size} (${percent}%)
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Available: ${avail}
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${analysis}" \
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"Free up space immediately:
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• Review top consumers above
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• Clean old logs: find /var/log -type f -mtime +30 -delete
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• Clean package cache: yum clean all
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• Clean email queue: exim -bp | wc -l (check queue)
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• Remove old backups: find /backup -mtime +30 -delete
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• Find large files: find ${mount} -type f -size +100M -exec ls -lh {} \\;" \
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98
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elif [ "$percent" -gt 85 ]; then
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# Quick analysis for high usage
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local top_dirs=$(du -sh "$mount"/* 2>/dev/null | sort -rh | head -3 | sed 's/^/ • /')
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add_issue "HIGH" "DISK - ${mount} high usage" \
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"Filesystem: ${filesystem}
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Usage: ${used} / ${size} (${percent}%)
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Available: ${avail}
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Top directories:
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${top_dirs}" \
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"Investigate disk usage:
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• du -sh ${mount}/* | sort -rh | head -10
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• Clean up unnecessary files or expand partition
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• Check logs: ls -lh /var/log/*.log
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• Check email queue: exim -bpc (if using Exim)" \
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75
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elif [ "$percent" -gt 75 ]; then
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add_issue "MEDIUM" "DISK - ${mount} approaching capacity" \
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"Usage: ${used} / ${size} (${percent}%)" \
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"Monitor disk usage. Plan for expansion." \
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65
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fi
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done < <(df -h | tail -n +2)
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# Check inode usage
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while IFS= read -r line; do
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local filesystem=$(echo "$line" | awk '{print $1}')
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local percent=$(echo "$line" | awk '{print $5}' | tr -d '%')
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local mount=$(echo "$line" | awk '{print $6}')
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[[ "$filesystem" =~ ^(tmpfs|devtmpfs|none) ]] && continue
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if [ "$percent" -gt 90 ]; then
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add_issue "HIGH" "DISK - ${mount} inode exhaustion" \
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"Inode usage: ${percent}%
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Filesystem: ${filesystem}" \
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"Find directories with many small files:
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• find ${mount} -xdev -type d -exec sh -c 'echo \$(ls -A {} | wc -l) {}' \\; | sort -rn | head -10" \
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85
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fi
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done < <(df -i | tail -n +2)
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# Check for disk errors
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local disk_errors=$(dmesg | grep -i "I/O error\|sector\|SMART" | wc -l || echo "0")
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if [ "$disk_errors" -gt 0 ]; then
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local error_sample=$(dmesg | grep -i "I/O error\|sector\|SMART" | tail -3 | sed 's/^/ • /' || echo " • Check dmesg")
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add_issue "CRITICAL" "DISK - Hardware errors detected" \
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"Found ${disk_errors} disk error messages
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Recent errors:
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${error_sample}" \
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"Check SMART status: smartctl -a /dev/sda
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Backup data immediately if errors persist." \
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92
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fi
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}
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################################################################################
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# Phase 3: CPU Analysis
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################################################################################
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analyze_cpu() {
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print_info "Analyzing CPU usage..."
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local cpu_cores=$(nproc)
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local load_1min=$(uptime | awk -F'load average:' '{print $2}' | awk -F',' '{print $1}' | xargs)
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local load_5min=$(uptime | awk -F'load average:' '{print $2}' | awk -F',' '{print $2}' | xargs)
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local load_15min=$(uptime | awk -F'load average:' '{print $2}' | awk -F',' '{print $3}' | xargs)
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# Calculate load per core
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local load_per_core=$(echo "$load_1min / $cpu_cores" | bc -l 2>/dev/null | awk '{printf "%.2f", $0}' || echo "0")
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# Calculate healthy load thresholds
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local healthy_load=$(echo "$cpu_cores * 0.7" | bc -l | awk '{printf "%.1f", $0}')
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local warning_load=$(echo "$cpu_cores * 1.0" | bc -l | awk '{printf "%.1f", $0}')
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local critical_load=$(echo "$cpu_cores * 2.0" | bc -l | awk '{printf "%.1f", $0}')
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# Detect load trend (increasing, stable, decreasing)
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local load_trend="stable"
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if (( $(echo "$load_1min > $load_5min * 1.2" | bc -l) )); then
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load_trend="increasing rapidly"
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elif (( $(echo "$load_1min > $load_5min" | bc -l) )); then
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load_trend="increasing"
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elif (( $(echo "$load_1min < $load_5min * 0.8" | bc -l) )); then
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load_trend="decreasing"
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fi
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# Check load average with intelligent thresholds
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if (( $(echo "$load_1min > $critical_load" | bc -l) )); then
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local top_cpu=$(ps aux --sort=-%cpu | head -6 | tail -5 | awk '{printf " • %-15s %6s %s\n", $1, $3"%", $11}')
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add_issue "CRITICAL" "CPU - Extreme load" \
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"Load average: ${load_1min} / ${load_5min} / ${load_15min}
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CPU cores: ${cpu_cores}
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Load per core: ${load_per_core}
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Trend: ${load_trend}
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Healthy load for this server: < ${healthy_load}
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Warning threshold: ${warning_load}
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Critical threshold: ${critical_load}
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Top CPU consumers:
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${top_cpu}" \
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"Immediate action required:
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1. Identify runaway processes: ps aux --sort=-%cpu | head -20
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2. Kill if necessary: kill -9 [PID]
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3. Check if under attack: Main Menu → Security → Bot Analyzer" \
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92
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elif (( $(echo "$load_1min > $warning_load" | bc -l) )); then
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local top_cpu=$(ps aux --sort=-%cpu | head -4 | tail -3 | awk '{printf " • %-15s %6s %s\n", $1, $3"%", $11}')
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add_issue "HIGH" "CPU - High load" \
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"Load average: ${load_1min} / ${load_5min} / ${load_15min}
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CPU cores: ${cpu_cores}
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Load per core: ${load_per_core}
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Trend: ${load_trend}
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Healthy load: < ${healthy_load}
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Current: ${load_1min} (above warning threshold of ${warning_load})
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Top CPU consumers:
|
|
${top_cpu}" \
|
|
"Monitor and optimize:
|
|
• Check: ps aux --sort=-%cpu | head -20
|
|
• Review high-CPU processes and optimize if possible" \
|
|
76
|
|
elif (( $(echo "$load_1min > $healthy_load" | bc -l) )); then
|
|
add_issue "MEDIUM" "CPU - Elevated load" \
|
|
"Load average: ${load_1min} / ${load_5min} / ${load_15min}
|
|
Healthy threshold: < ${healthy_load}
|
|
Trend: ${load_trend}" \
|
|
"Monitor trends. Load is elevated but not critical yet." \
|
|
62
|
|
fi
|
|
|
|
# Get top CPU consumers
|
|
ps aux --sort=-%cpu | head -11 | tail -10 > "$TEMP_DIR/top_cpu.txt"
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 4: MySQL/MariaDB Health
|
|
################################################################################
|
|
|
|
analyze_mysql() {
|
|
print_info "Analyzing MySQL/MariaDB..."
|
|
|
|
# Check if MySQL is running
|
|
if ! command -v mysql >/dev/null 2>&1; then
|
|
add_issue "LOW" "MYSQL - Not installed" \
|
|
"MySQL/MariaDB not found on system" \
|
|
"No action needed if not using databases." \
|
|
20
|
|
return
|
|
fi
|
|
|
|
if ! pgrep -x "mysqld|mariadbd" >/dev/null; then
|
|
add_issue "CRITICAL" "MYSQL - Service not running" \
|
|
"MySQL/MariaDB process not found" \
|
|
"Start service: systemctl start mysql / mariadb" \
|
|
95
|
|
return
|
|
fi
|
|
|
|
# Get MySQL stats (if we can connect)
|
|
local mysql_stats=$(mysql -e "SHOW GLOBAL STATUS LIKE 'Threads_connected'; SHOW GLOBAL STATUS LIKE 'Max_used_connections'; SHOW VARIABLES LIKE 'max_connections';" 2>/dev/null)
|
|
|
|
if [ -n "$mysql_stats" ]; then
|
|
local threads_connected=$(echo "$mysql_stats" | grep "Threads_connected" | awk '{print $2}' || echo "0")
|
|
local max_used=$(echo "$mysql_stats" | grep "Max_used_connections" | awk '{print $2}' || echo "0")
|
|
local max_connections=$(echo "$mysql_stats" | grep "max_connections" | awk '{print $2}' || echo "0")
|
|
|
|
local connection_percent=$((threads_connected * 100 / max_connections))
|
|
|
|
if [ "$connection_percent" -gt 80 ]; then
|
|
add_issue "HIGH" "MYSQL - Connection limit approaching" \
|
|
"Current connections: ${threads_connected} / ${max_connections} (${connection_percent}%)
|
|
Max used: ${max_used}" \
|
|
"Investigate and fix:
|
|
1. Find slow queries: Main Menu → Performance → MySQL Query Analyzer
|
|
2. Increase max_connections in /etc/my.cnf if needed
|
|
3. Check for connection leaks: show processlist;" \
|
|
78
|
|
fi
|
|
|
|
# Check InnoDB buffer pool vs RAM
|
|
local innodb_buffer=$(mysql -e "SHOW VARIABLES LIKE 'innodb_buffer_pool_size';" 2>/dev/null | grep innodb | awk '{print $2}' || echo "0")
|
|
local innodb_buffer_gb=$((innodb_buffer / 1024 / 1024 / 1024))
|
|
local mem_total_gb=$(($(free -m | awk '/^Mem:/ {print $2}') / 1024))
|
|
|
|
if [ "$innodb_buffer_gb" -gt 0 ] && [ "$innodb_buffer_gb" -gt $((mem_total_gb - 2)) ]; then
|
|
add_issue "HIGH" "MYSQL - InnoDB buffer pool too large" \
|
|
"innodb_buffer_pool_size: ${innodb_buffer_gb}GB
|
|
Total RAM: ${mem_total_gb}GB
|
|
System has insufficient free RAM for OS and other services" \
|
|
"Reduce innodb_buffer_pool_size to ~${mem_total_gb}GB * 0.6 = ~$((mem_total_gb * 6 / 10))GB
|
|
Edit /etc/my.cnf and restart MySQL" \
|
|
82
|
|
fi
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 5: Apache Health
|
|
################################################################################
|
|
|
|
analyze_apache() {
|
|
print_info "Analyzing Apache..."
|
|
|
|
# Check if Apache is running
|
|
if ! pgrep -x "httpd|apache2" >/dev/null; then
|
|
add_issue "CRITICAL" "APACHE - Service not running" \
|
|
"Apache process not found" \
|
|
"Start service: systemctl start httpd / apache2" \
|
|
95
|
|
return
|
|
fi
|
|
|
|
# Check Apache error log for recent issues
|
|
local apache_error_log=""
|
|
if [ -f "/var/log/httpd/error_log" ]; then
|
|
apache_error_log="/var/log/httpd/error_log"
|
|
elif [ -f "/var/log/apache2/error.log" ]; then
|
|
apache_error_log="/var/log/apache2/error.log"
|
|
fi
|
|
|
|
if [ -n "$apache_error_log" ]; then
|
|
# Check for MaxRequestWorkers limit hits
|
|
local max_workers_hits=$(grep -c "server reached MaxRequestWorkers" "$apache_error_log" 2>/dev/null || echo "0")
|
|
max_workers_hits=$(echo "$max_workers_hits" | tr -d '\n\r' | grep -o '[0-9]*' | head -1)
|
|
max_workers_hits=${max_workers_hits:-0}
|
|
if [ "$max_workers_hits" -gt 20 ] 2>/dev/null; then
|
|
add_issue "CRITICAL" "APACHE - MaxRequestWorkers limit hit frequently" \
|
|
"Server reached MaxRequestWorkers limit ${max_workers_hits} times
|
|
This causes connection refusal and 'server busy' errors" \
|
|
"Increase MaxRequestWorkers in Apache config (if RAM allows)
|
|
OR investigate slow PHP scripts / database queries causing workers to hang
|
|
Check: apachectl -M | grep mpm" \
|
|
88
|
|
elif [ "$max_workers_hits" -gt 5 ] 2>/dev/null; then
|
|
add_issue "HIGH" "APACHE - MaxRequestWorkers limit reached" \
|
|
"Limit hit ${max_workers_hits} times" \
|
|
"Monitor and consider increasing MaxRequestWorkers." \
|
|
72
|
|
fi
|
|
|
|
# Check for segfaults
|
|
local segfaults=$(grep -c "segfault" "$apache_error_log" 2>/dev/null || echo "0")
|
|
segfaults=$(echo "$segfaults" | tr -d '\n\r' | grep -o '[0-9]*' | head -1)
|
|
segfaults=${segfaults:-0}
|
|
if [ "$segfaults" -gt 0 ] 2>/dev/null; then
|
|
add_issue "HIGH" "APACHE - Segmentation faults detected" \
|
|
"Found ${segfaults} segfault events
|
|
May indicate corrupted modules or memory issues" \
|
|
"Check error log: tail -100 ${apache_error_log} | grep segfault
|
|
Update/reinstall problematic Apache modules" \
|
|
78
|
|
fi
|
|
fi
|
|
|
|
# Check Apache process count
|
|
local apache_procs=$(pgrep -c "httpd|apache2" || echo "0")
|
|
if [ "$apache_procs" -gt 200 ]; then
|
|
add_issue "MEDIUM" "APACHE - High process count" \
|
|
"Apache processes: ${apache_procs}
|
|
May indicate connection buildup or slow backend" \
|
|
"Check Apache status: apachectl fullstatus
|
|
Review MaxRequestWorkers setting" \
|
|
65
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 6: PHP-FPM Health (cPanel/Plesk)
|
|
################################################################################
|
|
|
|
analyze_php_fpm() {
|
|
print_info "Analyzing PHP-FPM..."
|
|
|
|
# Check if PHP-FPM is running
|
|
if ! pgrep -f "php-fpm" >/dev/null; then
|
|
add_issue "LOW" "PHP-FPM - Not running or not installed" \
|
|
"PHP-FPM processes not found
|
|
May be using mod_php instead" \
|
|
"No action needed if using Apache mod_php." \
|
|
30
|
|
return
|
|
fi
|
|
|
|
# Count PHP-FPM processes per user
|
|
local fpm_user_counts=$(ps aux | grep "php-fpm: pool" | grep -v grep | awk '{print $1}' | sort | uniq -c | sort -rn | head -10)
|
|
|
|
while IFS= read -r line; do
|
|
[ -z "$line" ] && continue
|
|
local count=$(echo "$line" | awk '{print $1}')
|
|
local user=$(echo "$line" | awk '{print $2}')
|
|
|
|
if [ -n "$count" ] && [ "$count" -gt 10 ] 2>/dev/null; then
|
|
# Try to find which domain
|
|
local user_domain=$(grep "^${user}:" /etc/trueuserdomains 2>/dev/null | cut -d: -f1 || echo "unknown")
|
|
|
|
add_issue "HIGH" "PHP-FPM - User '${user}' has many processes" \
|
|
"PHP-FPM processes: ${count}
|
|
User: ${user}
|
|
Domain: ${user_domain}
|
|
Possible causes: Stuck processes, heavy traffic, slow scripts, bot attacks, database issues" \
|
|
"Investigate with specialized tools:
|
|
1. Check for bot attacks: Main Menu → Security → Bot Analyzer (analyze ${user_domain})
|
|
2. Check for slow MySQL queries: Main Menu → Performance → MySQL Query Analyzer
|
|
3. Manual check: ps aux | grep ${user} | grep php-fpm
|
|
4. Kill if stuck: pkill -9 -u ${user} php-fpm" \
|
|
76
|
|
fi
|
|
done <<< "$fpm_user_counts"
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 7: Log Analysis - Security
|
|
################################################################################
|
|
|
|
analyze_security_logs() {
|
|
print_info "Analyzing security logs..."
|
|
|
|
local secure_log=""
|
|
if [ -f "/var/log/secure" ]; then
|
|
secure_log="/var/log/secure"
|
|
elif [ -f "/var/log/auth.log" ]; then
|
|
secure_log="/var/log/auth.log"
|
|
fi
|
|
|
|
if [ -n "$secure_log" ]; then
|
|
# Check for failed SSH attempts
|
|
local failed_ssh=$(grep "Failed password" "$secure_log" 2>/dev/null | wc -l || echo "0")
|
|
if [ "$failed_ssh" -gt 100 ]; then
|
|
local top_ips=$(grep "Failed password" "$secure_log" | awk '{print $(NF-3)}' | sort | uniq -c | sort -rn | head -5 | sed 's/^/ • /')
|
|
|
|
# Check if cPHulkd is available (cPanel)
|
|
local protection_cmd=""
|
|
if [ "$SYS_CONTROL_PANEL" = "cpanel" ] && [ -x "/usr/local/cpanel/bin/cphulk_pam_ctl" ]; then
|
|
# Check if cPHulkd is enabled
|
|
local cphulk_enabled=$(/usr/local/cpanel/bin/cphulk_pam_ctl --status 2>/dev/null | grep -i "enabled" || echo "disabled")
|
|
if echo "$cphulk_enabled" | grep -qi "disabled"; then
|
|
protection_cmd="Enable cPHulk (cPanel's brute force protection):
|
|
• Via menu: Main Menu → Security → Authentication Security → Enable cPHulk Protection
|
|
• Via command: bash modules/security/enable-cphulk.sh
|
|
• Manual enable: /usr/local/cpanel/bin/cphulk_pam_ctl --enable
|
|
• The setup wizard will automatically import your CSF whitelist to cPHulk"
|
|
else
|
|
protection_cmd="cPHulk is enabled. Ensure trusted IPs are whitelisted:
|
|
• Via menu: Main Menu → Security → Authentication Security → Enable cPHulk Protection
|
|
• Via command: bash modules/security/enable-cphulk.sh
|
|
• Manual whitelist: whmapi1 cphulkd_add_whitelist ip=YOUR_IP
|
|
• View blocked IPs: whmapi1 cphulkd_list_blocks"
|
|
fi
|
|
else
|
|
protection_cmd="Install automatic blocking: yum install fail2ban"
|
|
fi
|
|
|
|
add_issue "HIGH" "SECURITY - High SSH brute force attempts" \
|
|
"Failed SSH login attempts: ${failed_ssh}
|
|
Top attacking IPs:
|
|
${top_ips}" \
|
|
"Investigate and block:
|
|
1. Analyze attack patterns: Main Menu → Security → Bot Analyzer
|
|
2. Block IPs manually: csf -d [IP]
|
|
3. ${protection_cmd}" \
|
|
80
|
|
elif [ "$failed_ssh" -gt 50 ]; then
|
|
add_issue "MEDIUM" "SECURITY - Moderate SSH brute force" \
|
|
"Failed attempts: ${failed_ssh}" \
|
|
"Monitor and consider IP blocking if it increases." \
|
|
60
|
|
fi
|
|
|
|
# Check for successful root logins
|
|
local root_logins=$(grep "Accepted.*root" "$secure_log" 2>/dev/null | wc -l || echo "0")
|
|
if [ "$root_logins" -gt 0 ]; then
|
|
local root_login_ips=$(grep "Accepted.*root" "$secure_log" | awk '{print $(NF-3)}' | sort -u | sed 's/^/ • /')
|
|
local root_login_times=$(grep "Accepted.*root" "$secure_log" | awk '{print $1, $2, $3}' | tail -5 | sed 's/^/ • /')
|
|
|
|
# Check for unusual IPs (not common admin IPs)
|
|
add_issue "MEDIUM" "SECURITY - Root SSH logins detected" \
|
|
"Successful root logins: ${root_logins}
|
|
Source IPs:
|
|
${root_login_ips}
|
|
|
|
Recent logins:
|
|
${root_login_times}" \
|
|
"Review if these IPs are authorized:
|
|
• Disable root SSH: Set 'PermitRootLogin no' in /etc/ssh/sshd_config
|
|
• Use SSH keys instead of passwords
|
|
• Check: last | grep root" \
|
|
68
|
|
fi
|
|
|
|
# Check for suspicious sudo usage
|
|
local sudo_attempts=$(grep "sudo.*COMMAND" "$secure_log" 2>/dev/null | wc -l || echo "0")
|
|
if [ "$sudo_attempts" -gt 100 ]; then
|
|
local top_sudo_users=$(grep "sudo.*COMMAND" "$secure_log" | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -rn | head -5 | sed 's/^/ • /')
|
|
add_issue "MEDIUM" "SECURITY - High sudo activity" \
|
|
"Sudo command executions: ${sudo_attempts}
|
|
Top users:
|
|
${top_sudo_users}" \
|
|
"Review sudo logs for unusual activity:
|
|
• grep sudo /var/log/secure | tail -50" \
|
|
65
|
|
fi
|
|
fi
|
|
|
|
# Check for potential rootkit indicators
|
|
local suspicious_processes=$(ps aux | grep -E "\.\.\/\.\.|^\.|\.\.\/" | grep -v grep | wc -l || echo "0")
|
|
if [ "$suspicious_processes" -gt 0 ]; then
|
|
local sus_proc_list=$(ps aux | grep -E "\.\.\/\.\.|^\.|\.\.\/" | grep -v grep | head -5 | awk '{print $11}' | sed 's/^/ • /')
|
|
add_issue "CRITICAL" "SECURITY - Suspicious processes detected" \
|
|
"Found ${suspicious_processes} processes with suspicious paths:
|
|
${sus_proc_list}
|
|
|
|
May indicate rootkit or malware" \
|
|
"Run rootkit scanner immediately:
|
|
• Install chkrootkit: yum install chkrootkit
|
|
• Or rkhunter: yum install rkhunter
|
|
• Check processes: ps aux | grep -E '\.\./\.\.'" \
|
|
95
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 8: System Messages Log
|
|
################################################################################
|
|
|
|
analyze_messages_log() {
|
|
print_info "Analyzing system messages..."
|
|
|
|
if [ ! -f "/var/log/messages" ]; then
|
|
return
|
|
fi
|
|
|
|
# Check for kernel panics
|
|
local kernel_panics=$(grep "kernel panic\|Oops:" /var/log/messages 2>/dev/null | wc -l)
|
|
if [ -n "$kernel_panics" ] && [ "$kernel_panics" -gt 0 ] 2>/dev/null; then
|
|
add_issue "CRITICAL" "SYSTEM - Kernel panics detected" \
|
|
"Found ${kernel_panics} kernel panic events
|
|
System stability compromised" \
|
|
"Review: grep 'kernel panic' /var/log/messages
|
|
Update kernel or investigate hardware issues" \
|
|
98
|
|
fi
|
|
|
|
# Check for hardware errors
|
|
local hw_errors=$(grep "Hardware Error\|MCE\|ECC" /var/log/messages 2>/dev/null | wc -l)
|
|
if [ -n "$hw_errors" ] && [ "$hw_errors" -gt 0 ] 2>/dev/null; then
|
|
# Get actual error samples
|
|
local error_samples=$(grep -E "Hardware Error|MCE|ECC" /var/log/messages 2>/dev/null | tail -5 | sed 's/^/ /')
|
|
|
|
add_issue "HIGH" "SYSTEM - Hardware errors detected" \
|
|
"Found ${hw_errors} hardware error messages
|
|
May indicate failing hardware (RAM, CPU, disk)
|
|
|
|
Recent errors:
|
|
${error_samples}" \
|
|
"Investigate hardware health:
|
|
• Check RAM: dmidecode -t memory | grep -E 'Size|Type|Speed|Error'
|
|
• Check disk SMART: smartctl -a /dev/sda | grep -E 'Error|Failed|Health'
|
|
• Check dmesg: dmesg | grep -i 'error\|fail' | tail -20
|
|
• Run memtest86+ if RAM errors detected
|
|
• Contact hosting provider if persistent" \
|
|
85
|
|
fi
|
|
|
|
# Check for network issues
|
|
local net_errors=$(grep "link is down\|no carrier" /var/log/messages 2>/dev/null | wc -l)
|
|
if [ -n "$net_errors" ] && [ "$net_errors" -gt 5 ] 2>/dev/null; then
|
|
add_issue "MEDIUM" "NETWORK - Connection issues" \
|
|
"Found ${net_errors} network link issues" \
|
|
"Check network cable/switch, review: ip link show" \
|
|
62
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 9: Cron Job Health
|
|
################################################################################
|
|
|
|
analyze_cron() {
|
|
print_info "Analyzing cron jobs..."
|
|
|
|
local cron_log="/var/log/cron"
|
|
if [ ! -f "$cron_log" ]; then
|
|
return
|
|
fi
|
|
|
|
# Check for failed cron jobs (last 24 hours)
|
|
local cron_errors=$(grep "$(date -d '24 hours ago' '+%b %d')" "$cron_log" 2>/dev/null | grep "error\|failed\|No such file" | wc -l)
|
|
|
|
if [ -n "$cron_errors" ] && [ "$cron_errors" -gt 20 ] 2>/dev/null; then
|
|
local error_sample=$(grep "$(date -d '24 hours ago' '+%b %d')" "$cron_log" 2>/dev/null | grep "error\|failed" | tail -5 | sed 's/^/ • /')
|
|
add_issue "HIGH" "CRON - Many failed jobs" \
|
|
"Found ${cron_errors} cron errors in last 24h
|
|
Sample errors:
|
|
${error_sample}" \
|
|
"Review cron logs: tail -100 /var/log/cron
|
|
Fix failing scripts or disable problematic jobs" \
|
|
75
|
|
elif [ -n "$cron_errors" ] && [ "$cron_errors" -gt 5 ] 2>/dev/null; then
|
|
add_issue "MEDIUM" "CRON - Some failed jobs" \
|
|
"Found ${cron_errors} cron errors in last 24h" \
|
|
"Review: grep error /var/log/cron | tail -20" \
|
|
60
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 10: Network Analysis
|
|
################################################################################
|
|
|
|
analyze_network() {
|
|
print_info "Analyzing network..."
|
|
|
|
# Check nf_conntrack usage
|
|
if [ -f "/proc/sys/net/netfilter/nf_conntrack_count" ]; then
|
|
local conntrack_count=$(cat /proc/sys/net/netfilter/nf_conntrack_count 2>/dev/null || echo "0")
|
|
local conntrack_max=$(cat /proc/sys/net/netfilter/nf_conntrack_max 2>/dev/null || echo "100000")
|
|
local conntrack_percent=$((conntrack_count * 100 / conntrack_max))
|
|
|
|
if [ "$conntrack_percent" -gt 90 ]; then
|
|
add_issue "CRITICAL" "NETWORK - Connection tracking table near limit" \
|
|
"nf_conntrack usage: ${conntrack_count} / ${conntrack_max} (${conntrack_percent}%)
|
|
New connections may be dropped" \
|
|
"Increase limit:
|
|
• sysctl -w net.netfilter.nf_conntrack_max=$((conntrack_max * 2))
|
|
• Add to /etc/sysctl.conf: net.netfilter.nf_conntrack_max=$((conntrack_max * 2))
|
|
• Or investigate connection leaks" \
|
|
88
|
|
elif [ "$conntrack_percent" -gt 75 ]; then
|
|
add_issue "HIGH" "NETWORK - Connection tracking table high" \
|
|
"nf_conntrack usage: ${conntrack_count} / ${conntrack_max} (${conntrack_percent}%)" \
|
|
"Monitor and consider increasing limit if it continues to grow." \
|
|
72
|
|
fi
|
|
fi
|
|
|
|
# Check for TCP retransmissions
|
|
local tcp_retrans=$(netstat -s 2>/dev/null | grep "segments retransmitted" | awk '{print $1}' || echo "0")
|
|
tcp_retrans=$(echo "$tcp_retrans" | tr -d '\n\r' | grep -o '[0-9]*' | head -1)
|
|
tcp_retrans=${tcp_retrans:-0}
|
|
local tcp_out=$(netstat -s 2>/dev/null | grep "segments sent out" | awk '{print $1}' || echo "1")
|
|
tcp_out=$(echo "$tcp_out" | tr -d '\n\r' | grep -o '[0-9]*' | head -1)
|
|
tcp_out=${tcp_out:-1}
|
|
if [ "$tcp_out" -gt 1000000 ] 2>/dev/null; then
|
|
local retrans_percent=$(echo "scale=2; $tcp_retrans * 100 / $tcp_out" | bc 2>/dev/null || echo "0")
|
|
if (( $(echo "$retrans_percent > 5" | bc -l 2>/dev/null) )); then
|
|
# Get current MTU
|
|
local current_mtu=$(ip link show $(ip route | grep default | awk '{print $5}' | head -1) 2>/dev/null | grep mtu | awk '{print $5}')
|
|
|
|
add_issue "HIGH" "NETWORK - High TCP retransmission rate" \
|
|
"Retransmissions: ${retrans_percent}% of total segments (${tcp_retrans} of ${tcp_out})
|
|
This indicates network issues, congestion, or bandwidth problems
|
|
|
|
Common causes:
|
|
• Network congestion or packet loss
|
|
• MTU mismatch (current: ${current_mtu})
|
|
• Bandwidth saturation
|
|
• Faulty network hardware
|
|
• ISP/hosting provider issues" \
|
|
"Diagnose and resolve network issues:
|
|
1. Test packet loss: ping -c 100 8.8.8.8 | grep loss
|
|
2. Check MTU: ip link show | grep mtu (should be 1500 for most networks)
|
|
3. Monitor bandwidth: install vnstat for tracking (yum install vnstat)
|
|
4. Real-time monitor: iftop -i eth0 (install: yum install iftop)
|
|
5. Check provider status: Contact hosting provider if persistent
|
|
6. Analyze traffic: Main Menu → Security → Bot Analyzer (check for attacks)
|
|
NOTE: For detailed bandwidth analysis, use: Main Menu → Network Diagnostics (when available)" \
|
|
74
|
|
fi
|
|
fi
|
|
|
|
# Check listen queue overflows
|
|
local listen_overflows=$(netstat -s 2>/dev/null | grep "times the listen queue of a socket overflowed" | awk '{print $1}' | head -1)
|
|
[ -z "$listen_overflows" ] && listen_overflows=0
|
|
if [ "$listen_overflows" -gt 100 ] 2>/dev/null; then
|
|
add_issue "MEDIUM" "NETWORK - Listen queue overflows detected" \
|
|
"Listen queue overflows: ${listen_overflows}
|
|
Applications may be dropping connections" \
|
|
"Increase net.core.somaxconn:
|
|
• sysctl -w net.core.somaxconn=4096
|
|
• Add to /etc/sysctl.conf" \
|
|
68
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 11: Time/NTP Analysis
|
|
################################################################################
|
|
|
|
analyze_time() {
|
|
print_info "Analyzing time synchronization..."
|
|
|
|
# Check if chronyd or ntpd is running
|
|
local time_service=""
|
|
if pgrep -x chronyd >/dev/null; then
|
|
time_service="chronyd"
|
|
elif pgrep -x ntpd >/dev/null; then
|
|
time_service="ntpd"
|
|
fi
|
|
|
|
if [ -z "$time_service" ]; then
|
|
add_issue "MEDIUM" "TIME - No NTP service running" \
|
|
"Neither chronyd nor ntpd is running
|
|
Time drift can cause SSL certificate errors and authentication issues" \
|
|
"Install and start NTP service:
|
|
• AlmaLinux/RHEL: yum install chrony && systemctl enable --now chronyd
|
|
• Check sync: chronyc tracking" \
|
|
66
|
|
else
|
|
# Check time sync status
|
|
if [ "$time_service" = "chronyd" ]; then
|
|
local sync_status=$(chronyc tracking 2>/dev/null | grep "System time" | awk '{print $4, $5}' || echo "unknown")
|
|
local offset_seconds=$(chronyc tracking 2>/dev/null | grep "System time" | awk '{print $4}' || echo "0")
|
|
|
|
# Convert to absolute value for comparison
|
|
offset_seconds=${offset_seconds#-}
|
|
|
|
if (( $(echo "$offset_seconds > 1" | bc -l 2>/dev/null || echo "0") )); then
|
|
add_issue "HIGH" "TIME - Clock offset detected" \
|
|
"Time offset: ${sync_status}
|
|
Significant time drift detected" \
|
|
"Force time sync:
|
|
• chronyc -a makestep
|
|
• Check sources: chronyc sources" \
|
|
75
|
|
fi
|
|
fi
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 12: System Updates & Kernel
|
|
################################################################################
|
|
|
|
analyze_updates() {
|
|
print_info "Analyzing system updates..."
|
|
|
|
# Check if running kernel matches installed kernel
|
|
local running_kernel=$(uname -r)
|
|
local installed_kernel=$(rpm -q kernel --last 2>/dev/null | head -1 | awk '{print $1}' | sed 's/kernel-//' || echo "$running_kernel")
|
|
|
|
if [ "$running_kernel" != "$installed_kernel" ]; then
|
|
add_issue "MEDIUM" "SYSTEM - Reboot required" \
|
|
"Running kernel: ${running_kernel}
|
|
Installed kernel: ${installed_kernel}
|
|
System needs reboot to use new kernel" \
|
|
"Schedule maintenance window and reboot:
|
|
• Check uptime: uptime
|
|
• Reboot when ready: reboot" \
|
|
64
|
|
fi
|
|
|
|
# Check for available security updates (if yum/dnf)
|
|
if command -v yum >/dev/null 2>&1; then
|
|
local security_updates=$(yum updateinfo list security 2>/dev/null | grep "^FEDORA\|^RHSA" | wc -l)
|
|
if [ -n "$security_updates" ] && [ "$security_updates" -gt 10 ] 2>/dev/null; then
|
|
add_issue "HIGH" "SYSTEM - Many security updates available" \
|
|
"Security updates available: ${security_updates}
|
|
System may be vulnerable" \
|
|
"Apply security updates:
|
|
• yum update --security
|
|
• Or schedule full update: yum update" \
|
|
76
|
|
elif [ -n "$security_updates" ] && [ "$security_updates" -gt 0 ] 2>/dev/null; then
|
|
add_issue "MEDIUM" "SYSTEM - Security updates available" \
|
|
"Security updates: ${security_updates}" \
|
|
"Review and apply: yum updateinfo list security" \
|
|
58
|
|
fi
|
|
fi
|
|
|
|
# Check for control panel version
|
|
if [ "$SYS_CONTROL_PANEL" = "cpanel" ] && [ -n "$SYS_CONTROL_PANEL_VERSION" ]; then
|
|
echo "cPanel version: $SYS_CONTROL_PANEL_VERSION" >> "$TEMP_DIR/system_info.txt"
|
|
elif [ "$SYS_CONTROL_PANEL" = "plesk" ] && [ -n "$SYS_CONTROL_PANEL_VERSION" ]; then
|
|
echo "Plesk version: $SYS_CONTROL_PANEL_VERSION" >> "$TEMP_DIR/system_info.txt"
|
|
elif [ "$SYS_CONTROL_PANEL" = "interworx" ] && [ -n "$SYS_CONTROL_PANEL_VERSION" ]; then
|
|
echo "InterWorx version: $SYS_CONTROL_PANEL_VERSION" >> "$TEMP_DIR/system_info.txt"
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 13: File Limits & Descriptors
|
|
################################################################################
|
|
|
|
analyze_file_limits() {
|
|
print_info "Analyzing file descriptor limits..."
|
|
|
|
# Check system-wide file descriptor usage
|
|
local file_nr=$(cat /proc/sys/fs/file-nr 2>/dev/null || echo "0 0 100000")
|
|
local used_fds=$(echo "$file_nr" | awk '{print $1}')
|
|
local max_fds=$(echo "$file_nr" | awk '{print $3}')
|
|
local fd_percent=$((used_fds * 100 / max_fds))
|
|
|
|
if [ "$fd_percent" -gt 80 ]; then
|
|
add_issue "HIGH" "FILE DESCRIPTORS - System limit approaching" \
|
|
"Open file descriptors: ${used_fds} / ${max_fds} (${fd_percent}%)
|
|
Applications may fail to open files/sockets" \
|
|
"Increase limit:
|
|
• sysctl -w fs.file-max=$((max_fds * 2))
|
|
• Add to /etc/sysctl.conf: fs.file-max=$((max_fds * 2))
|
|
• Check per-process limits: ulimit -n" \
|
|
78
|
|
fi
|
|
|
|
# Check for common services with high FD usage
|
|
for service in httpd mysqld php-fpm; do
|
|
if pgrep -x "$service" >/dev/null; then
|
|
local service_fds=$(lsof -p $(pgrep -x "$service" | head -1) 2>/dev/null | wc -l || echo "0")
|
|
if [ "$service_fds" -gt 10000 ]; then
|
|
add_issue "MEDIUM" "$service - High file descriptor usage" \
|
|
"Service: $service
|
|
Open file descriptors: ${service_fds}
|
|
May indicate connection/file leaks" \
|
|
"Investigate $service:
|
|
• lsof -p \$(pgrep -x $service | head -1) | head -100
|
|
• Check for file/connection leaks" \
|
|
65
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 14: Email Queue Analysis
|
|
################################################################################
|
|
|
|
analyze_email_queue() {
|
|
print_info "Analyzing email queue..."
|
|
|
|
local queue_count=0
|
|
local mail_system=""
|
|
|
|
# Check for Exim (most common on cPanel)
|
|
if command -v exim >/dev/null 2>&1; then
|
|
mail_system="Exim"
|
|
queue_count=$(exim -bpc 2>/dev/null || echo "0")
|
|
# Check for Postfix
|
|
elif command -v postqueue >/dev/null 2>&1; then
|
|
mail_system="Postfix"
|
|
queue_count=$(postqueue -p 2>/dev/null | tail -1 | awk '{print $5}' || echo "0")
|
|
# Check for Sendmail
|
|
elif command -v mailq >/dev/null 2>&1; then
|
|
mail_system="Sendmail"
|
|
queue_count=$(mailq 2>/dev/null | grep -c "^[A-Z]" || echo "0")
|
|
fi
|
|
|
|
[ -z "$queue_count" ] && queue_count=0
|
|
|
|
if [ "$queue_count" -gt 5000 ]; then
|
|
# Get sample of queued messages
|
|
local queue_sample=""
|
|
if [ "$mail_system" = "Exim" ]; then
|
|
queue_sample=$(exim -bp | head -20 | sed 's/^/ /')
|
|
fi
|
|
|
|
add_issue "CRITICAL" "EMAIL - Massive mail queue" \
|
|
"Mail system: ${mail_system}
|
|
Queue size: ${queue_count} messages
|
|
This can consume disk space and cause slow mail delivery
|
|
|
|
Sample:
|
|
${queue_sample}" \
|
|
"Investigate and clear queue:
|
|
• Check for spam/compromised accounts
|
|
• Review: exim -bp | head -50 (for Exim)
|
|
• Clear specific messages: exim -Mrm [message-id]
|
|
• Force delivery attempts: exim -qff
|
|
• Check for frozen messages: exim -bp | grep frozen" \
|
|
92
|
|
elif [ "$queue_count" -gt 1000 ]; then
|
|
add_issue "HIGH" "EMAIL - Large mail queue" \
|
|
"Mail system: ${mail_system}
|
|
Queue size: ${queue_count} messages" \
|
|
"Review mail queue:
|
|
• exim -bp | less (for Exim)
|
|
• mailq | less (for Postfix/Sendmail)
|
|
• Check for spam/compromised accounts
|
|
• Review /var/log/exim_mainlog for errors" \
|
|
78
|
|
elif [ "$queue_count" -gt 100 ]; then
|
|
add_issue "MEDIUM" "EMAIL - Growing mail queue" \
|
|
"Queue size: ${queue_count} messages (${mail_system})" \
|
|
"Monitor queue. May indicate delivery issues or spam." \
|
|
58
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 15: I/O Wait Analysis
|
|
################################################################################
|
|
|
|
analyze_iowait() {
|
|
print_info "Analyzing disk I/O performance..."
|
|
|
|
# Get current I/O wait from top
|
|
local iowait=$(top -bn1 | grep "Cpu(s)" | awk '{print $10}' | sed 's/%wa,//' | cut -d'%' -f1)
|
|
|
|
if [ -z "$iowait" ]; then
|
|
# Try alternative method with iostat if available
|
|
if command -v iostat >/dev/null 2>&1; then
|
|
iowait=$(iostat -c 1 2 | tail -1 | awk '{print $4}')
|
|
else
|
|
return
|
|
fi
|
|
fi
|
|
|
|
# Remove any decimal point and convert to integer for comparison
|
|
local iowait_int=$(echo "$iowait" | cut -d'.' -f1)
|
|
[ -z "$iowait_int" ] && iowait_int=0
|
|
|
|
if [ "$iowait_int" -gt 30 ] 2>/dev/null; then
|
|
# Try to find which process is causing I/O
|
|
local io_procs=$(iotop -b -n 1 2>/dev/null | head -20 || ps aux --sort=-pcpu | head -10)
|
|
|
|
add_issue "CRITICAL" "DISK I/O - Extremely high I/O wait" \
|
|
"Current I/O wait: ${iowait}%
|
|
System is waiting on disk operations - extreme performance impact" \
|
|
"Identify I/O-heavy processes:
|
|
• iotop -o (show only active I/O)
|
|
• iostat -x 1 (detailed disk stats)
|
|
• Check for failing drives: dmesg | grep -i error
|
|
• Check disk health: smartctl -a /dev/sda" \
|
|
95
|
|
elif [ "$iowait_int" -gt 15 ] 2>/dev/null; then
|
|
add_issue "HIGH" "DISK I/O - High I/O wait" \
|
|
"I/O wait: ${iowait}%
|
|
System performance degraded by disk operations" \
|
|
"Monitor disk I/O:
|
|
• iostat -x 1 5 (watch for 5 seconds)
|
|
• iotop (if installed: yum install iotop)
|
|
• Check for large file operations
|
|
• Review disk usage and fragmentation" \
|
|
76
|
|
elif [ "$iowait_int" -gt 5 ] 2>/dev/null; then
|
|
add_issue "MEDIUM" "DISK I/O - Elevated I/O wait" \
|
|
"I/O wait: ${iowait}%" \
|
|
"Monitor disk performance. May indicate heavy disk activity." \
|
|
55
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 16: SELinux Analysis
|
|
################################################################################
|
|
|
|
analyze_selinux() {
|
|
print_info "Analyzing SELinux status..."
|
|
|
|
# Check if SELinux is enabled
|
|
if ! command -v getenforce >/dev/null 2>&1; then
|
|
return
|
|
fi
|
|
|
|
local selinux_status=$(getenforce 2>/dev/null || echo "Disabled")
|
|
|
|
if [ "$selinux_status" = "Enforcing" ]; then
|
|
# Check for recent denials
|
|
local denials_count=0
|
|
if [ -f "/var/log/audit/audit.log" ]; then
|
|
denials_count=$(grep "denied" /var/log/audit/audit.log 2>/dev/null | grep "$(date +%b\ %d)" | wc -l)
|
|
fi
|
|
|
|
if [ "$denials_count" -gt 50 ]; then
|
|
local denial_sample=$(grep "denied" /var/log/audit/audit.log 2>/dev/null | grep "$(date +%b\ %d)" | tail -5 | sed 's/^/ /')
|
|
|
|
add_issue "HIGH" "SELINUX - Many denials detected" \
|
|
"SELinux denials today: ${denials_count}
|
|
SELinux is blocking operations - may cause application failures
|
|
|
|
Recent denials:
|
|
${denial_sample}" \
|
|
"Review and fix SELinux policies:
|
|
• ausearch -m avc -ts today
|
|
• audit2allow -a (generate policy)
|
|
• audit2why -a (explain denials)
|
|
• Temporarily: setenforce 0 (NOT recommended for production)" \
|
|
82
|
|
elif [ "$denials_count" -gt 10 ]; then
|
|
add_issue "MEDIUM" "SELINUX - Some denials detected" \
|
|
"SELinux denials today: ${denials_count}" \
|
|
"Review: ausearch -m avc -ts today" \
|
|
62
|
|
fi
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 17: Control Panel Services
|
|
################################################################################
|
|
|
|
analyze_control_panel_services() {
|
|
print_info "Analyzing control panel services..."
|
|
|
|
local panel_issues=""
|
|
|
|
# Check cPanel services
|
|
if [ "$SYS_PANEL" = "cpanel" ]; then
|
|
# Key cPanel services to check
|
|
local cpanel_services=("cpanel" "whostmgrd" "cpsrvd" "tailwatchd" "dnsadmin")
|
|
|
|
for service in "${cpanel_services[@]}"; do
|
|
if ! systemctl is-active --quiet "$service" 2>/dev/null; then
|
|
panel_issues="${panel_issues} • ${service} is not running\n"
|
|
fi
|
|
done
|
|
|
|
if [ -n "$panel_issues" ]; then
|
|
add_issue "HIGH" "CPANEL - Critical services down" \
|
|
"The following cPanel services are not running:
|
|
${panel_issues}
|
|
This affects control panel functionality" \
|
|
"Restart services:
|
|
• systemctl restart cpanel
|
|
• /scripts/restartsrv_cpanel
|
|
• Check logs: tail -50 /usr/local/cpanel/logs/error_log" \
|
|
85
|
|
fi
|
|
|
|
# Check Plesk services
|
|
elif [ "$SYS_PANEL" = "plesk" ]; then
|
|
if ! systemctl is-active --quiet psa 2>/dev/null; then
|
|
add_issue "HIGH" "PLESK - Panel service down" \
|
|
"Plesk service is not running" \
|
|
"Restart Plesk: systemctl restart psa" \
|
|
85
|
|
fi
|
|
fi
|
|
|
|
# Check web server
|
|
if ! pgrep -x httpd >/dev/null && ! pgrep -x apache2 >/dev/null; then
|
|
add_issue "CRITICAL" "WEB SERVER - Apache/httpd not running" \
|
|
"Web server process not found
|
|
All websites are down" \
|
|
"Start web server:
|
|
• systemctl restart httpd (CentOS/AlmaLinux)
|
|
• systemctl restart apache2 (Debian/Ubuntu)
|
|
• Check logs: tail -50 /var/log/httpd/error_log" \
|
|
98
|
|
fi
|
|
|
|
# Check database server
|
|
if ! pgrep -x mysqld >/dev/null && ! pgrep -x mariadbd >/dev/null; then
|
|
add_issue "CRITICAL" "DATABASE - MySQL/MariaDB not running" \
|
|
"Database server process not found
|
|
Database-driven sites are down" \
|
|
"Start database:
|
|
• systemctl restart mariadb
|
|
• systemctl restart mysql
|
|
• Check logs: tail -50 /var/log/mariadb/mariadb.log
|
|
• Check disk space in /var/lib/mysql" \
|
|
98
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 18: DNS Resolution Check
|
|
################################################################################
|
|
|
|
analyze_dns() {
|
|
print_info "Analyzing DNS resolution..."
|
|
|
|
# Test resolving a few critical domains
|
|
local test_domains=("google.com" "cloudflare.com" "8.8.8.8")
|
|
local failed_count=0
|
|
local slow_count=0
|
|
local failed_domains=""
|
|
|
|
for domain in "${test_domains[@]}"; do
|
|
local start_time=$(date +%s%N)
|
|
if ! host "$domain" >/dev/null 2>&1; then
|
|
failed_count=$((failed_count + 1))
|
|
failed_domains="${failed_domains} • ${domain}\n"
|
|
else
|
|
local end_time=$(date +%s%N)
|
|
local duration_ms=$(( (end_time - start_time) / 1000000 ))
|
|
|
|
if [ "$duration_ms" -gt 2000 ]; then
|
|
slow_count=$((slow_count + 1))
|
|
fi
|
|
fi
|
|
done
|
|
|
|
if [ "$failed_count" -gt 0 ]; then
|
|
add_issue "CRITICAL" "DNS - Resolution failures detected" \
|
|
"Failed to resolve ${failed_count} test domains:
|
|
${failed_domains}
|
|
DNS issues cause slow loading and failures across all services" \
|
|
"Check DNS configuration:
|
|
• cat /etc/resolv.conf
|
|
• Test: dig google.com
|
|
• Try alternate DNS: echo 'nameserver 8.8.8.8' >> /etc/resolv.conf
|
|
• Restart networking: systemctl restart network" \
|
|
94
|
|
elif [ "$slow_count" -gt 1 ]; then
|
|
add_issue "HIGH" "DNS - Slow resolution detected" \
|
|
"DNS queries taking >2 seconds
|
|
This slows down all network operations" \
|
|
"Check DNS servers:
|
|
• cat /etc/resolv.conf
|
|
• Consider faster DNS: 8.8.8.8, 1.1.1.1
|
|
• Test: dig @8.8.8.8 google.com" \
|
|
72
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 19: Zombie Process Check
|
|
################################################################################
|
|
|
|
analyze_zombie_processes() {
|
|
print_info "Analyzing zombie processes..."
|
|
|
|
# Count zombie (defunct) processes
|
|
local zombie_count=$(ps aux | awk '$8 ~ /Z/ {print $0}' | wc -l)
|
|
|
|
if [ "$zombie_count" -gt 50 ]; then
|
|
local zombie_sample=$(ps aux | awk '$8 ~ /Z/ {print $0}' | head -5 | awk '{print " • " $11 " (PID " $2 ", PPID via pstree)"}')
|
|
|
|
add_issue "HIGH" "PROCESSES - Many zombie processes detected" \
|
|
"Zombie (defunct) processes: ${zombie_count}
|
|
Indicates parent processes not properly cleaning up children
|
|
|
|
Sample zombies:
|
|
${zombie_sample}" \
|
|
"Investigate parent processes:
|
|
• ps aux | awk '\$8 ~ /Z/'
|
|
• pstree -p | grep defunct
|
|
• Kill parent process or reboot if persistent
|
|
• Common causes: Apache, PHP-FPM, custom scripts" \
|
|
78
|
|
elif [ "$zombie_count" -gt 10 ]; then
|
|
add_issue "MEDIUM" "PROCESSES - Zombie processes detected" \
|
|
"Zombie processes: ${zombie_count}
|
|
May indicate stuck parent processes" \
|
|
"Review: ps aux | awk '\$8 ~ /Z/'" \
|
|
58
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 20: Firewall Status Check
|
|
################################################################################
|
|
|
|
analyze_firewall() {
|
|
print_info "Analyzing firewall status..."
|
|
|
|
local firewall_status=""
|
|
local firewall_active=0
|
|
|
|
# Check for CSF (ConfigServer Security & Firewall)
|
|
if [ -x "/usr/sbin/csf" ]; then
|
|
if csf -l >/dev/null 2>&1; then
|
|
firewall_active=1
|
|
firewall_status="CSF"
|
|
|
|
# Check if CSF is in testing mode
|
|
if grep -q "TESTING = \"1\"" /etc/csf/csf.conf 2>/dev/null; then
|
|
add_issue "MEDIUM" "FIREWALL - CSF in testing mode" \
|
|
"CSF firewall is in TESTING mode
|
|
Blocks will auto-expire - not suitable for production" \
|
|
"Disable testing mode:
|
|
• Edit /etc/csf/csf.conf
|
|
• Set TESTING = \"0\"
|
|
• Restart: csf -r" \
|
|
62
|
|
fi
|
|
|
|
# Check for high deny count (might indicate attack)
|
|
local deny_count=$(csf -d 2>/dev/null | grep -c "^" || echo "0")
|
|
if [ "$deny_count" -gt 1000 ]; then
|
|
add_issue "MEDIUM" "FIREWALL - Many blocked IPs" \
|
|
"CSF has ${deny_count} denied IPs
|
|
Server may be under attack or CSF may need tuning" \
|
|
"Review blocked IPs:
|
|
• csf -d | less
|
|
• Check for false positives
|
|
• Consider: Main Menu → Security → Bot Analyzer" \
|
|
65
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
# Check iptables
|
|
if [ "$firewall_active" -eq 0 ]; then
|
|
if systemctl is-active --quiet iptables 2>/dev/null || iptables -L >/dev/null 2>&1; then
|
|
firewall_active=1
|
|
firewall_status="iptables"
|
|
|
|
# Check if iptables has rules
|
|
local rule_count=$(iptables -L | grep -c "^Chain\|^target" || echo "0")
|
|
if [ "$rule_count" -lt 5 ]; then
|
|
add_issue "MEDIUM" "FIREWALL - iptables active but minimal rules" \
|
|
"iptables is running but has very few rules
|
|
Server may not be properly protected" \
|
|
"Review firewall rules: iptables -L -n -v" \
|
|
55
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
# Check firewalld
|
|
if [ "$firewall_active" -eq 0 ]; then
|
|
if systemctl is-active --quiet firewalld 2>/dev/null; then
|
|
firewall_active=1
|
|
firewall_status="firewalld"
|
|
fi
|
|
fi
|
|
|
|
# Warn if no firewall detected
|
|
if [ "$firewall_active" -eq 0 ]; then
|
|
add_issue "HIGH" "FIREWALL - No active firewall detected" \
|
|
"No firewall found (CSF, iptables, firewalld)
|
|
Server is exposed to attacks" \
|
|
"Install and configure a firewall:
|
|
• CSF (recommended for cPanel):
|
|
cd /usr/src && wget https://download.configserver.com/csf.tgz
|
|
tar -xzf csf.tgz && cd csf && sh install.sh
|
|
• Or enable firewalld: systemctl enable --now firewalld" \
|
|
82
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 21: Network Connectivity Check
|
|
################################################################################
|
|
|
|
analyze_network_connectivity() {
|
|
print_info "Analyzing network connectivity..."
|
|
|
|
# Test outbound connectivity
|
|
local connectivity_failed=0
|
|
local test_ips=("8.8.8.8" "1.1.1.1")
|
|
|
|
for ip in "${test_ips[@]}"; do
|
|
if ! ping -c 1 -W 2 "$ip" >/dev/null 2>&1; then
|
|
connectivity_failed=$((connectivity_failed + 1))
|
|
fi
|
|
done
|
|
|
|
if [ "$connectivity_failed" -eq ${#test_ips[@]} ]; then
|
|
add_issue "CRITICAL" "NETWORK - No internet connectivity" \
|
|
"Cannot reach external IPs (${test_ips[*]})
|
|
Server has no internet access - critical services affected" \
|
|
"Check network:
|
|
• ip link show (check interfaces)
|
|
• ip route show (check routing)
|
|
• systemctl status network
|
|
• Check gateway: ping gateway IP
|
|
• Contact hosting provider if persistent" \
|
|
96
|
|
elif [ "$connectivity_failed" -gt 0 ]; then
|
|
add_issue "HIGH" "NETWORK - Intermittent connectivity issues" \
|
|
"Some external IPs unreachable
|
|
Network may be unstable" \
|
|
"Check network stability:
|
|
• ping -c 10 8.8.8.8
|
|
• mtr 8.8.8.8 (install: yum install mtr)
|
|
• Check: ip route show" \
|
|
74
|
|
fi
|
|
|
|
# Test HTTP/HTTPS connectivity (can the server download updates?)
|
|
if ! timeout 5 curl -s -o /dev/null https://google.com 2>/dev/null; then
|
|
add_issue "MEDIUM" "NETWORK - HTTP/HTTPS connectivity issues" \
|
|
"Cannot establish HTTPS connections
|
|
May affect updates, let's encrypt, external API calls" \
|
|
"Test connectivity:
|
|
• curl -v https://google.com
|
|
• Check firewall rules
|
|
• Check proxy settings: echo \$http_proxy" \
|
|
68
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Phase 22: CloudLinux Specific Checks
|
|
################################################################################
|
|
|
|
analyze_cloudlinux() {
|
|
if [ "$SYS_CLOUDLINUX" != "yes" ]; then
|
|
return
|
|
fi
|
|
|
|
print_info "Analyzing CloudLinux LVE limits..."
|
|
|
|
# Check if lvectl exists
|
|
if ! command -v lvectl >/dev/null 2>&1; then
|
|
return
|
|
fi
|
|
|
|
# Get users hitting LVE limits
|
|
local lve_faults=$(lvectl list --by-fault 2>/dev/null | head -10)
|
|
if [ -n "$lve_faults" ]; then
|
|
local top_faults=$(echo "$lve_faults" | head -5 | sed 's/^/ • /')
|
|
add_issue "HIGH" "CLOUDLINUX - Users hitting LVE limits" \
|
|
"Top users hitting resource limits:
|
|
${top_faults}
|
|
|
|
This causes 503 errors and slow websites" \
|
|
"Review limits: lvectl list
|
|
Increase limits for affected users or optimize their sites:
|
|
• lvectl set [USER] --cpu=200 --pmem=2G" \
|
|
78
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Main Analysis Function
|
|
################################################################################
|
|
|
|
run_analysis() {
|
|
clear
|
|
print_banner "System Health Check"
|
|
echo ""
|
|
print_info "Starting comprehensive system analysis..."
|
|
echo ""
|
|
|
|
# Run all analysis phases
|
|
analyze_memory
|
|
analyze_memory_config
|
|
analyze_disk
|
|
analyze_cpu
|
|
analyze_mysql
|
|
analyze_apache
|
|
analyze_php_fpm
|
|
analyze_security_logs
|
|
analyze_messages_log
|
|
analyze_cron
|
|
analyze_network
|
|
analyze_time
|
|
analyze_updates
|
|
analyze_file_limits
|
|
analyze_email_queue
|
|
analyze_iowait
|
|
analyze_selinux
|
|
analyze_control_panel_services
|
|
analyze_dns
|
|
analyze_zombie_processes
|
|
analyze_firewall
|
|
analyze_network_connectivity
|
|
analyze_cloudlinux
|
|
|
|
print_success "Analysis complete!"
|
|
echo ""
|
|
}
|
|
|
|
################################################################################
|
|
# Report Generation
|
|
################################################################################
|
|
|
|
generate_report() {
|
|
{
|
|
echo "=============================================================================="
|
|
echo "SERVER HEALTH CHECK - $(date '+%Y-%m-%d %H:%M:%S')"
|
|
echo "=============================================================================="
|
|
echo ""
|
|
echo "System: $(hostname)"
|
|
echo "Control Panel: ${SYS_CONTROL_PANEL:-none} ${SYS_CONTROL_PANEL_VERSION:-}"
|
|
echo "OS: ${SYS_OS_TYPE:-unknown} ${SYS_OS_VERSION:-}"
|
|
echo "Kernel: $(uname -r)"
|
|
echo ""
|
|
echo "SEVERITY SUMMARY:"
|
|
echo " CRITICAL: ${#CRITICAL_ISSUES[@]} issues"
|
|
echo " HIGH: ${#HIGH_ISSUES[@]} issues"
|
|
echo " MEDIUM: ${#MEDIUM_ISSUES[@]} issues"
|
|
echo " LOW: ${#LOW_ISSUES[@]} issues"
|
|
echo ""
|
|
|
|
# Critical issues
|
|
if [ ${#CRITICAL_ISSUES[@]} -gt 0 ]; then
|
|
echo "=============================================================================="
|
|
echo "CRITICAL ISSUES (Immediate Action Required)"
|
|
echo "=============================================================================="
|
|
echo ""
|
|
for issue in "${CRITICAL_ISSUES[@]}"; do
|
|
echo "$issue"
|
|
echo "------------------------------------------------------------------------------"
|
|
echo ""
|
|
done
|
|
fi
|
|
|
|
# High issues
|
|
if [ ${#HIGH_ISSUES[@]} -gt 0 ]; then
|
|
echo "=============================================================================="
|
|
echo "HIGH ISSUES (Action Recommended)"
|
|
echo "=============================================================================="
|
|
echo ""
|
|
for issue in "${HIGH_ISSUES[@]}"; do
|
|
echo "$issue"
|
|
echo "------------------------------------------------------------------------------"
|
|
echo ""
|
|
done
|
|
fi
|
|
|
|
# Medium issues
|
|
if [ ${#MEDIUM_ISSUES[@]} -gt 0 ]; then
|
|
echo "=============================================================================="
|
|
echo "MEDIUM ISSUES (Monitor Closely)"
|
|
echo "=============================================================================="
|
|
echo ""
|
|
for issue in "${MEDIUM_ISSUES[@]}"; do
|
|
echo "$issue"
|
|
echo "------------------------------------------------------------------------------"
|
|
echo ""
|
|
done
|
|
fi
|
|
|
|
# Low issues
|
|
if [ ${#LOW_ISSUES[@]} -gt 0 ]; then
|
|
echo "=============================================================================="
|
|
echo "LOW ISSUES (Informational)"
|
|
echo "=============================================================================="
|
|
echo ""
|
|
for issue in "${LOW_ISSUES[@]}"; do
|
|
echo "$issue"
|
|
echo "------------------------------------------------------------------------------"
|
|
echo ""
|
|
done
|
|
fi
|
|
|
|
# Summary
|
|
echo "=============================================================================="
|
|
echo "NEXT STEPS"
|
|
echo "=============================================================================="
|
|
echo ""
|
|
echo "Priority Actions:"
|
|
echo " 1. Address all CRITICAL issues immediately"
|
|
echo " 2. Plan fixes for HIGH issues"
|
|
echo " 3. Monitor MEDIUM issues for trends"
|
|
echo ""
|
|
echo "Detailed Analysis Available:"
|
|
echo " • Bot Analyzer (Menu → Security) for traffic/attack analysis"
|
|
echo " • MySQL Query Analyzer (Menu → Performance) for database optimization"
|
|
echo ""
|
|
echo "Report saved to: $REPORT_FILE"
|
|
echo ""
|
|
|
|
} | tee "$REPORT_FILE"
|
|
}
|
|
|
|
################################################################################
|
|
# Save Health Baseline to Reference Database
|
|
################################################################################
|
|
|
|
save_health_baseline() {
|
|
# Only save if reference database exists
|
|
if [ ! -f "$SYSREF_DB" ]; then
|
|
return
|
|
fi
|
|
|
|
print_info "Saving health baseline to reference database..."
|
|
|
|
# Remove old health baseline section
|
|
sed -i '/^\[HEALTH_BASELINE\]/,/^$/d' "$SYSREF_DB" 2>/dev/null
|
|
|
|
# Collect current metrics
|
|
local mem_total=$(free -m | awk '/^Mem:/ {print $2}')
|
|
local mem_used=$(free -m | awk '/^Mem:/ {print $3}')
|
|
local mem_percent=$((mem_used * 100 / mem_total))
|
|
|
|
local cpu_load_1min=$(uptime | awk -F'load average:' '{print $2}' | awk -F',' '{print $1}' | xargs)
|
|
|
|
local disk_percent=$(df -h / | tail -1 | awk '{print $5}' | tr -d '%')
|
|
|
|
local email_queue=0
|
|
if command -v exim >/dev/null 2>&1; then
|
|
email_queue=$(exim -bpc 2>/dev/null || echo "0")
|
|
fi
|
|
|
|
local httpd_status="stopped"
|
|
if pgrep -x httpd >/dev/null || pgrep -x apache2 >/dev/null; then
|
|
httpd_status="running"
|
|
fi
|
|
|
|
local mysql_status="stopped"
|
|
if pgrep -x mysqld >/dev/null || pgrep -x mariadbd >/dev/null; then
|
|
mysql_status="running"
|
|
fi
|
|
|
|
local iowait=$(top -bn1 | grep "Cpu(s)" | awk '{print $10}' | sed 's/%wa,//' | cut -d'%' -f1 | cut -d'.' -f1)
|
|
[ -z "$iowait" ] && iowait=0
|
|
|
|
local zombie_count=$(ps aux | awk '$8 ~ /Z/' | wc -l)
|
|
|
|
local firewall_active="none"
|
|
if [ -x "/usr/sbin/csf" ] && csf -l >/dev/null 2>&1; then
|
|
firewall_active="csf"
|
|
elif systemctl is-active --quiet iptables 2>/dev/null || iptables -L >/dev/null 2>&1; then
|
|
firewall_active="iptables"
|
|
elif systemctl is-active --quiet firewalld 2>/dev/null; then
|
|
firewall_active="firewalld"
|
|
fi
|
|
|
|
local current_date=$(date '+%Y-%m-%d')
|
|
local current_datetime=$(date '+%Y-%m-%d %H:%M:%S')
|
|
|
|
# Collect network metrics
|
|
local network_interface=$(ip route | grep default | awk '{print $5}' | head -1)
|
|
local network_mtu=$(ip link show "$network_interface" 2>/dev/null | grep mtu | awk '{print $5}' || echo "unknown")
|
|
local tcp_retrans=$(netstat -s 2>/dev/null | grep "segments retransmitted" | awk '{print $1}' || echo "0")
|
|
tcp_retrans=$(echo "$tcp_retrans" | tr -d '\n\r' | grep -o '[0-9]*' | head -1)
|
|
tcp_retrans=${tcp_retrans:-0}
|
|
local tcp_out=$(netstat -s 2>/dev/null | grep "segments sent out" | awk '{print $1}' || echo "1")
|
|
tcp_out=$(echo "$tcp_out" | tr -d '\n\r' | grep -o '[0-9]*' | head -1)
|
|
tcp_out=${tcp_out:-1}
|
|
local tcp_retrans_percent="0"
|
|
if [ "$tcp_out" -gt 1000000 ] 2>/dev/null; then
|
|
tcp_retrans_percent=$(echo "scale=2; $tcp_retrans * 100 / $tcp_out" | bc 2>/dev/null || echo "0")
|
|
fi
|
|
|
|
local rx_errors=0
|
|
local tx_errors=0
|
|
local rx_dropped=0
|
|
local tx_dropped=0
|
|
if [ -n "$network_interface" ] && [ -d "/sys/class/net/$network_interface/statistics" ]; then
|
|
rx_errors=$(cat "/sys/class/net/$network_interface/statistics/rx_errors" 2>/dev/null || echo "0")
|
|
tx_errors=$(cat "/sys/class/net/$network_interface/statistics/tx_errors" 2>/dev/null || echo "0")
|
|
rx_dropped=$(cat "/sys/class/net/$network_interface/statistics/rx_dropped" 2>/dev/null || echo "0")
|
|
tx_dropped=$(cat "/sys/class/net/$network_interface/statistics/tx_dropped" 2>/dev/null || echo "0")
|
|
fi
|
|
|
|
# Collect hardware status
|
|
local disk_smart_status="unknown"
|
|
local disk_errors_count=0
|
|
if command -v smartctl >/dev/null 2>&1; then
|
|
local primary_disk=$(lsblk -nd -o NAME,TYPE | awk '$2=="disk" {print "/dev/"$1; exit}')
|
|
if [ -n "$primary_disk" ]; then
|
|
disk_smart_status=$(smartctl -H "$primary_disk" 2>/dev/null | grep "SMART overall-health" | awk '{print $NF}' || echo "unknown")
|
|
fi
|
|
fi
|
|
disk_errors_count=$(dmesg | grep -i "I/O error\|sector\|SMART\|Hardware Error" | wc -l || echo "0")
|
|
|
|
# Collect security metrics
|
|
local ssh_failed_attempts=0
|
|
local ssh_attacks_today=0
|
|
if [ -f "/var/log/secure" ]; then
|
|
ssh_failed_attempts=$(grep "Failed password" /var/log/secure 2>/dev/null | wc -l || echo "0")
|
|
ssh_attacks_today=$(grep "Failed password" /var/log/secure 2>/dev/null | grep "$(date '+%b %e')" | wc -l || echo "0")
|
|
fi
|
|
|
|
local cphulk_status="not_installed"
|
|
if [ -x "/usr/local/cpanel/bin/cphulk_pam_ctl" ]; then
|
|
if /usr/local/cpanel/bin/cphulk_pam_ctl --status 2>/dev/null | grep -qi "enabled"; then
|
|
cphulk_status="enabled"
|
|
else
|
|
cphulk_status="disabled"
|
|
fi
|
|
fi
|
|
|
|
# Append new health baseline section
|
|
{
|
|
echo ""
|
|
echo "[HEALTH_BASELINE]"
|
|
echo "HEALTH|TIMESTAMP|$current_datetime|"
|
|
|
|
# System resources
|
|
echo "HEALTH|MEMORY_TOTAL_MB|$mem_total|$current_date"
|
|
echo "HEALTH|MEMORY_USED_PERCENT|$mem_percent|$current_date"
|
|
echo "HEALTH|CPU_LOAD_1MIN|$cpu_load_1min|$current_date"
|
|
echo "HEALTH|CPU_CORES|$CPU_CORES|$current_date"
|
|
echo "HEALTH|DISK_USED_PERCENT|$disk_percent|$current_date"
|
|
echo "HEALTH|IOWAIT_PERCENT|$iowait|$current_date"
|
|
|
|
# Services
|
|
echo "HEALTH|EMAIL_QUEUE_SIZE|$email_queue|$current_date"
|
|
echo "HEALTH|ZOMBIE_PROCESSES|$zombie_count|$current_date"
|
|
echo "HEALTH|HTTPD_STATUS|$httpd_status|$current_date"
|
|
echo "HEALTH|MYSQL_STATUS|$mysql_status|$current_date"
|
|
echo "HEALTH|FIREWALL_STATUS|$firewall_active|$current_date"
|
|
|
|
# Network status
|
|
echo "HEALTH|NETWORK_INTERFACE|$network_interface|$current_date"
|
|
echo "HEALTH|NETWORK_MTU|$network_mtu|$current_date"
|
|
echo "HEALTH|NETWORK_RX_ERRORS|$rx_errors|$current_date"
|
|
echo "HEALTH|NETWORK_TX_ERRORS|$tx_errors|$current_date"
|
|
echo "HEALTH|NETWORK_RX_DROPPED|$rx_dropped|$current_date"
|
|
echo "HEALTH|NETWORK_TX_DROPPED|$tx_dropped|$current_date"
|
|
echo "HEALTH|TCP_RETRANS_PERCENT|$tcp_retrans_percent|$current_date"
|
|
|
|
# Hardware status
|
|
echo "HEALTH|DISK_SMART_STATUS|$disk_smart_status|$current_date"
|
|
echo "HEALTH|HARDWARE_ERRORS|$disk_errors_count|$current_date"
|
|
|
|
# Security status
|
|
echo "HEALTH|SSH_FAILED_ATTEMPTS_TOTAL|$ssh_failed_attempts|$current_date"
|
|
echo "HEALTH|SSH_ATTACKS_TODAY|$ssh_attacks_today|$current_date"
|
|
echo "HEALTH|CPHULK_STATUS|$cphulk_status|$current_date"
|
|
|
|
# Issue counts
|
|
echo "HEALTH|CRITICAL_ISSUES|${#CRITICAL_ISSUES[@]}|$current_date"
|
|
echo "HEALTH|HIGH_ISSUES|${#HIGH_ISSUES[@]}|$current_date"
|
|
echo "HEALTH|MEDIUM_ISSUES|${#MEDIUM_ISSUES[@]}|$current_date"
|
|
echo "HEALTH|LOW_ISSUES|${#LOW_ISSUES[@]}|$current_date"
|
|
echo ""
|
|
} >> "$SYSREF_DB"
|
|
}
|
|
|
|
################################################################################
|
|
# Display Report
|
|
################################################################################
|
|
|
|
display_report() {
|
|
if [ ${#CRITICAL_ISSUES[@]} -eq 0 ] && [ ${#HIGH_ISSUES[@]} -eq 0 ] && [ ${#MEDIUM_ISSUES[@]} -eq 0 ] && [ ${#LOW_ISSUES[@]} -eq 0 ]; then
|
|
echo ""
|
|
print_success "No issues detected! System is healthy."
|
|
echo ""
|
|
else
|
|
generate_report | less -R
|
|
fi
|
|
|
|
echo ""
|
|
print_info "Full report saved to: $REPORT_FILE"
|
|
echo ""
|
|
read -p "Press Enter to continue..."
|
|
}
|
|
|
|
################################################################################
|
|
# Main
|
|
################################################################################
|
|
|
|
run_analysis
|
|
save_health_baseline
|
|
display_report
|
|
|
|
# Cleanup
|
|
rm -rf "$TEMP_DIR"
|