How to Find the Cause of High Server CPU Usage
To find the cause of the CPU overloading Linux, check the load, user/system/iowait/steal, process, thread, container, PHP and Query in the event timeline.
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20 articles · Tag: LinuxShowing 13–20
To find the cause of the CPU overloading Linux, check the load, user/system/iowait/steal, process, thread, container, PHP and Query in the event timeline.
When the site goes down, check DNS, network, TLS, Nginx, application and database layer by layer, save evidence, and recover the service with the least risk.
Fix 504 by identifying the payment gatewayway builder error, upstream time, PHP row, query database, external API and limit each layer; not increasing arbitrary timeout.
To fix 502 Nginx, match the error time with the error log and check the upstream status, PHP-FPM, socket, permission, worker capacity and proxy chain.
Check Nginx WordPress with server_name, root, try_files, PHP-FPM, sensitive file restrictions, TLS, cache and log settings, and before reloading with syntax test.
Compare Nginx and Apache in terms of processing model, static file, PHP, rewrite,.htaccess, reverse proxy, security and team capabilities, and choose wisely.
The basic configuration of Linux includes inventory, patch, SSH, firewall, user limit, time, backup, log and monitoring; in secure order and recovery path.
To set up the Ubuntu server securely, prepare access, patch, SSH, firewall, web server, TLS, backup, monitoring and rollback before DNS is transferred.