myVesta

Code: Select all

#!/bin/bash

# Comprehensive Service Monitor and Recovery Script for Debian-based systems
# This script sets up a systemd service to monitor and automatically restart critical services if they become inactive.
# Services monitored: MariaDB, Apache2, Nginx, PHP7.4, Redis, Memcached

# Ensure the script is run as root
if [ "$EUID" -ne 0 ]; then
    echo "Please run as root"
    exit 1
fi

# Define the path for the monitor script
MONITOR_SCRIPT="/usr/local/bin/service_monitor.sh"

# Define the path for the systemd service file
SERVICE_FILE="/etc/systemd/system/service-monitor.service"

# Log file path
LOG_FILE="/var/log/service_monitor.log"

# Create the monitor script
cat << EOF > "$MONITOR_SCRIPT"
#!/bin/bash

# Log file path
LOG_FILE="/var/log/service_monitor.log"

# Array of services to monitor
SERVICES=("mariadb" "apache2" "nginx" "php7.4-fpm" "redis-server" "memcached")

# Function to log messages
log_message() {
    echo "\$(date '+%Y-%m-%d %H:%M:%S') - \$1" >> "\$LOG_FILE"
}

# Function to check and restart a service
check_and_restart_service() {
    local service=\$1
    if ! systemctl is-active --quiet "\$service"; then
        log_message "Service \$service is inactive. Waiting 2 minutes before attempting restart."
        sleep 120
        if ! systemctl is-active --quiet "\$service"; then
            log_message "Attempting to restart \$service"
            if systemctl restart "\$service"; then
                log_message "Service \$service restarted successfully"
            else
                log_message "Failed to restart \$service. Manual intervention may be required."
            fi
        else
            log_message "Service \$service is now active. No restart needed."
        fi
    fi
}

# Main loop
while true; do
    for service in "\${SERVICES[@]}"; do
        # Use a subshell to handle each service check concurrently
        (
            check_and_restart_service "\$service"
        ) &
    done

    # Wait for all background processes to finish
    wait

    # Sleep for 2 minutes before the next check
    sleep 120
done
EOF

# Make the monitor script executable
chmod +x "$MONITOR_SCRIPT"

# Create the systemd service file
cat << EOF > "$SERVICE_FILE"
[Unit]
Description=Service Monitor and Recovery
After=network.target

[Service]
ExecStart=$MONITOR_SCRIPT
Restart=always
User=root

[Install]
WantedBy=multi-user.target
EOF

# Reload systemd, enable and start the service
systemctl daemon-reload
systemctl enable service-monitor.service
systemctl start service-monitor.service

echo "Service monitor has been set up and started."
echo "You can check its status with: systemctl status service-monitor"
echo "Logs are available at: $LOG_FILE"

Code: Select all

apt_running=$(ps -Af | grep 'apt' | grep -v 'grep apt' | wc -l)
if [ "$apt_running" -gt 0 ]; then
	echo "apt is running, maybe apt upgrade, we should not restart services";
	sleep 120,
	continue;
fi

Code: Select all

#!/bin/bash

# Comprehensive Service Monitor and Recovery Script for Debian-based systems
# This script sets up a systemd service to monitor and automatically restart critical services if they become inactive.
# Services monitored: MariaDB, Apache2, Nginx, PHP7.4, Redis, Memcached

# Ensure the script is run as root
if [ "$EUID" -ne 0 ]; then
    echo "Please run as root"
    exit 1
fi

# Define the path for the monitor script
MONITOR_SCRIPT="/usr/local/bin/service_monitor.sh"

# Define the path for the systemd service file
SERVICE_FILE="/etc/systemd/system/service-monitor.service"

# Log file path
LOG_FILE="/var/log/service_monitor.log"

# Create the monitor script
cat << EOF > "$MONITOR_SCRIPT"
#!/bin/bash

# Log file path
LOG_FILE="/var/log/service_monitor.log"

# Array of services to monitor
SERVICES=("mariadb" "apache2" "nginx" "php7.4-fpm" "redis-server" "memcached")

# Function to log messages
log_message() {
    echo "\$(date '+%Y-%m-%d %H:%M:%S') - \$1" >> "\$LOG_FILE"
}

# Function to check and restart a service
check_and_restart_service() {
    local service=\$1
    if ! systemctl is-active --quiet "\$service"; then
        log_message "Service \$service is inactive. Waiting 2 minutes before attempting restart."
        sleep 120
        if ! systemctl is-active --quiet "\$service"; then
            log_message "Attempting to restart \$service"
            if systemctl restart "\$service"; then
                log_message "Service \$service restarted successfully"
            else
                log_message "Failed to restart \$service. Manual intervention may be required."
            fi
        else
            log_message "Service \$service is now active. No restart needed."
        fi
    fi
}

# Main loop
while true; do
    # Check if apt is running
    apt_running=\$(ps -Af | grep 'apt' | grep -v 'grep apt' | wc -l)
    if [ "\$apt_running" -gt 0 ]; then
        log_message "apt is running, possibly due to system updates. Skipping service checks."
        sleep 120
        continue
    fi

    for service in "\${SERVICES[@]}"; do
        # Use a subshell to handle each service check concurrently
        (
            check_and_restart_service "\$service"
        ) &
    done

    # Wait for all background processes to finish
    wait

    # Sleep for 2 minutes before the next check
    sleep 120
done
EOF

# Make the monitor script executable
chmod +x "$MONITOR_SCRIPT"

# Create the systemd service file
cat << EOF > "$SERVICE_FILE"
[Unit]
Description=Service Monitor and Recovery
After=network.target

[Service]
ExecStart=$MONITOR_SCRIPT
Restart=always
User=root

[Install]
WantedBy=multi-user.target
EOF

# Reload systemd, enable and start the service
systemctl daemon-reload
systemctl enable service-monitor.service
systemctl start service-monitor.service

echo "Service monitor has been set up and started."
echo "You can check its status with: systemctl status service-monitor"
echo "Logs are available at: $LOG_FILE"