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diagnosis [2015/06/01 23:37] (current) – created - external edit 127.0.0.1
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 +====== Diagnosis ======
  
 +  * [[DNS]]
 +  * [[Network Diagnosis]]
 +  * [[PHP Errors]]
 +  * [[Slow Website]]
 +  * [[SSH Diagnosis]]
 +==== Server Diagnosis ====
 +
 +== System Access ==
 +
 +If a server is having issues and you can still access it through one or more services (SSH, MySQL, HTTPD, etc.), then check these areas:
 +
 +  * monit: What is the system load?  What is the memory usage?
 +  * collectd: Are there any trends of increasing loads or memory usage?
 +  * System, Apache, MySQL logs: check for anomalies
 +
 +== No Access ==
 +
 +If you can't access a server through any services, then run these tests:
 +
 +  * Check DNS records to see if they are resolving correctly
 +  * Log into web hosting control panel to see status
 +
 +==== Todo ====
 +
 +  * pidstat

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