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Monitoring Scripts: Monitor Systems

Monitoring scripts watch systems. Check health. Alert on problems.

Here's the thing: Monitoring scripts watch systems. Learn patterns. Use them.

Basic Monitoring​

#!/bin/bash
if ! systemctl is-active nginx; then
    echo "Nginx is down!"
    # Alert
fi

My take: Monitoring checks status. Alerts on problems.

Common Patterns​

Health Check​

check_service() {
    if ! systemctl is-active "$1"; then
        alert "Service $1 is down"
    fi
}

What's Next?​

Now that you understand monitoring, let's talk about Log Analysis.

Personal note: Monitoring scripts seemed unnecessary at first. Then I used them. Now I use them always. They prevent problems. Use them.