Implementing high availability on a web server

Now that you know all the software components in play, it's time to go deep into a web server HA configuration. This proposed design foresees two nodes with Apache on top that is bonded to a virtual IP address. In this design, the HTTPD or better Apache is on top of an active/passive cluster that is managed by Corosync/Pacemaker.

It is quite an easy task to provide a highly available configuration for the Zabbix GUI because the web application is well defined and does not produce or generate data or any kind of file on the web server. This allows you to have two nodes deployed on two different servers, if possible on two distant locations, implementing a highly available fault-tolerant disaster-recovery ...

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