Introduction MySQL slow query logging can be a highly useful tool for uncovering performance bottlenecks in your websites. The MySQL slow query log is where the MySQL database server will log all queries that exceed a time (in seconds) that…
Introduction PHP slow logging can be an extremely useful debugging tool for tracking down long-running requests that can lead to performance bottlenecks for your WordPress websites. By identifying the specific requests that are running slow, you can set about either…
Table of Contents Introduction Quick First Checks Services are down (MySQL, PHP, Nginx, OLS) Checking the Logs Critical Errors / 500 Errors Check top / htop for Load and CPU Steal MySQL/Database Checks Freeing Up Disk Space Server is Overloaded…
Introduction If your websites have been running smoothly for more than a few days, the chances of them running into a serious issue or “going down” is incredibly rare. However, a few key pieces of information can be incredibly empowering…
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Table of Contents About 502 Errors Common Causes Step 1. Check PHP via Monit Step 2. Check RAM and Swap Usage via Monit Step 3. Check your DNS and Cloudflare Step 4. Check your Nginx Error Log Step 5. Enable…