adminWhat Monitoring and Logs Mean
Monitoring checks whether the website and server are healthy. Logs record what services are doing. Together, they turn invisible infrastructure behavior into visible evidence.
Where Monitoring Sits In The Stack
Monitoring sits above the full stack. Logs exist inside each layer, including Nginx, PHP-FPM, MySQL, WordPress, firewall and system services.
How Monitoring Works
Monitoring tools check uptime, SSL expiry, disk space, CPU, memory, HTTP status and sometimes page content. Logs help explain what happened when an alert appears.
Why Monitoring Fails
Monitoring fails when it checks only the homepage, has no alert channel, creates too many noisy alerts, ignores disk space or is never reviewed after incidents.
How To Think About Monitoring
Monitoring is the dashboard of infrastructure. Logs are the black box recorder. Without them, troubleshooting becomes guessing.
Infrastructure Layer
Backup / Monitoring
Difficulty Level
Beginner
Core Concept
Monitoring detects infrastructure problems, while logs explain what happened inside each service.
System Role
They give website operators evidence before and during incidents, reducing guesswork and downtime.
How It Works
Monitoring sends regular checks to the website and server. Logs record service events. When something fails, alerts show the symptom and logs reveal the cause.
Connected Components
Uptime monitor, SSL monitor, disk monitor, Nginx logs, PHP-FPM logs, MySQL logs, system logs, alert channel, incident notes.
Common Failure Points
No alerts, noisy alerts, checking only homepage, ignoring disk usage, not reading logs, logs growing too large, missing incident notes.
Verification Method
Test uptime checks, review SSL alerts, inspect disk alerts, read Nginx error logs, PHP-FPM logs, MySQL logs and system service status.
Basic Commands
curl -I https://example.com;
df -h;
free -m;
tail -n 50 /var/log/nginx/error.log;
journalctl -u nginx --no-pager -n 50