WordPress Server Optimization on Oracle Linux 8: Historical Configuration and Diagnostics

#!/bin/bash

# ================================
# Service Restart Script
# ================================

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

# Log file
LOG_FILE="/var/log/service_restart_$(date +%Y%m%d).log"
exec 1> >(tee -a "$LOG_FILE") 2>&1

# Services to restart
SERVICES=("php-fpm" "httpd")

# Prevent concurrent execution
LOCK_FILE="/tmp/service_restart.lock"
exec 200>$LOCK_FILE
flock -n 200 || { echo -e "${RED}Another instance is already running.${NC}"; exit 1; }

echo "$(date '+%Y-%m-%d %H:%M:%S') : Starting service restart process"

# Syntax check
echo -e "${YELLOW}Checking configuration syntax...${NC}"
if ! httpd -t; then
    echo -e "${RED}Apache configuration syntax error!${NC}"
    exit 1
fi

if ! php-fpm -t; then
    echo -e "${RED}PHP-FPM configuration syntax error!${NC}"
    exit 1
fi

# Restart services
for SERVICE in "${SERVICES[@]}"; do
    echo -e "${YELLOW}Restarting ${SERVICE}...${NC}"
    if systemctl restart "$SERVICE"; then
        if systemctl is-active --quiet "$SERVICE"; then
            echo -e "${GREEN}${SERVICE} restarted successfully${NC}"
        else
            echo -e "${RED}${SERVICE} is not active after restart!${NC}"
            exit 1
        fi
    else
        echo -e "${RED}Failed to restart ${SERVICE}${NC}"
        exit 1
    fi
    sleep 2
done

# Check logs
echo -e "${YELLOW}Recent error logs:${NC}"
echo "---- Apache Error Log ----"
tail -n 10 /var/log/httpd/error_log || echo "No Apache error log found."
echo "---- PHP-FPM Error Log ----"
tail -n 10 /var/log/php-fpm/error.log || echo "No PHP-FPM error log found."

echo "$(date '+%Y-%m-%d %H:%M:%S') : Service restart completed"