Differences between revisions 14 and 15

Apache

Running a redundant apache server does not require much from apache itself, but rather the underlying filesystem and a proxy in front of it. The filesystem is important, so the website and its php sessions can be shared between the servers. For this we will use GlusterFS. The proxy in front of apache will be a combination of HA-proxy and Corosync.

In this setup we will configure 2 apache servers. None of these will be master/slave/primary/secondary. They will just be running with the same configuration. Since the servers are configure the same way it makes sense to share some files.

Logfiles
php sessions
webroots

Software

apt-get install apache2 php php-mysql

Filesystem

Configure your system as a Gluster Client, so you have /var/www on a GlusterFS. Make a simple webpage, that shows something unique about the system.

index.php

   1 <?php
   2 echo gethostname();
   3 ?>

-  ⇤ ← Revision 14 as of 2018-01-04 13:51:34 → 
  Size: 772
  Editor: Kristian Kallenberg
  Comment:
+   ← Revision 15 as of 2018-01-05 09:19:52 → ⇥
  Size: 1007
  Editor: Kristian Kallenberg
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 5:
-In this setup we will configure 2 apache servers.
+In this setup we will configure 2 apache servers. None of these will be master/slave/primary/secondary. They will just be running with the same configuration. Since the servers are configure the same way it makes sense to share some files.

 * Logfiles
 * php sessions
 * webroots