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Old 13th May 2010, 15:28
Slyz0r Slyz0r is offline
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Thumbs up Failover apache : Haproxy & keepalived

Hello people !

I want to configure a simple failover for my web server without load balancing.

I found 2 solutions :

1.) A director like HAproxy, redirects the requests to my web server 1, if it is down, the director redirects to my web server 2 configured with the "backup" option. The director should be checked with keepalived.

2.) Just configure an IP failover with keepalived between my 2 servers. They share a virtual ip address passing from one to another.

I have some questions about these.

1.) I follow this tutorial but when I configure keepalived, the two directors have the VIP configured in same time on their ethernet interface :s ... I suppose that the backup server must configure this vip if the master server is down, right ? And secondly the priority seems not to work...

2.) Is it possible with keepalived to check http or tcp service ? At this moment to redirect the requests to the second server, the master server must have a network or hardware issue... How to do for check http or tomcat service ? For example : if these services don't work, the vip is transfered to the backup server...

3.) The same as the two but with HAproxy.

4.) Someone has a better solution ? xD

Thanks a lot everybody !
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Old 14th May 2010, 10:51
Slyz0r Slyz0r is offline
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About the first question, I found the solution !
My firewall blocked multicast paquets. !
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