At a glance Recognize memory loss, high CPU usage, full disk and overloaded service.
Watch Several Resources
Check the CPU, memory, disk space and transfer usage in the supplier panel or monitoring tool. Take a measurement at the moment of the problem and compare it with normal work.
Find the process causing the load
On Linux, the administrator can use tools such as top or htop to preview processes. First check the process name, logs and recent changes. Do not finish random system processes without understanding their role.
Check disk and logs
A filled disk can stop the database, page or updates. Check the size of logs, temporary files and backup. Delete only the data you know and make a backup of important files before cleaning.
Make a decision on the basis of a trend
Short jumps on the backup do not have to mean a problem. If the resource is constantly close to the limit and affects the service, optimize the application or increase the package. After each change, check the measurements again.
Back up first. Change one thing at a time.
Back up your working files, make a change and check the logs. Changing one thing at a time makes it easier to find the cause of a problem and restore your previous settings.
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