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Created December 10, 2013 12:51
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Tools & techniques for monitoring server health.
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server-health.md

Server Health

Command Line Tools

  • top

  • uptime: Pay attention to the load average value.

  • free -m: Indicates how much memory is available. Some memory is used by the machine trying to anticipate, but it's still available. That's why the second row in the free column is key.

                   total       used       free     shared    buffers     cached
  Mem:           991        763        227          0         69        464
  -/+ buffers/cache:        230        **761**
  Swap:          976         47        929

MySQL

  • mysqlreport -u <username> --password <password>

PHP

APC

  1. Copy apc.php.gz to a webroot and unzip.

     $ cp /usr/share/doc/php-apc/apc.php.gz /path/to/webroot && gunzip /path/to/webroot/apc.php.gz

  2. Open http://webroot.tld/apc.php in a browser.

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