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System status viewing, performance tuning tools, performance testing tools, etc. commonly used under linux involve commands, just look at the following pictures.
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Linux various system performance viewing tools
You can see that many commands are often used, such as: lsof, iostat, free, ss, netstat, top, ps, etc.
Linux performance test tool:
linux performance tuning tool
For performance tuning, daily adjustments are more about sysctl.conf
There are also some adjustments to the environment variable env
Linux static information viewing tool
Commonly used commands for static information include df, fdisk, ip, ruote, etc.
System status viewing tool sar
The sar command is a system running status statistics tool under Linux, which displays the specified operating system status counter to the standard output device. The sar tool will sample the current state of the system, and then express the current operating state of the system by calculating data and ratios. Its characteristic is that it can continuously sample the system and obtain a large amount of sampling data. Both sampled data and analysis results can be stored in a file, which consumes very little system resources.
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Recommended reading
elk8.0 deployment documentation (rsyslog+kafka+logstash+elasticsearch+kibana))
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