[ClusterLabs] Trouble setting up selfcompiled Apache in a pacemaker cluster on Oracle Linux 6.8

Ken Gaillot kgaillot at redhat.com
Thu Feb 9 23:55:34 UTC 2017


On 01/16/2017 10:16 AM, Souvignier, Daniel wrote:
> Hi List,
> 
>  
> 
> I’ve got trouble getting Apache to work in a Pacemaker cluster I set up
> between two Oracle Linux 6.8 hosts. The cluster itself works just fine,
> but Apache won’t come up. Thing is here, this Apache is different from a
> basic setup because it is selfcompiled and therefore living in
> /usr/local/apache2. Also it is the latest version available (2.4.25),
> which could also be causing problems. To be able to debug, I went into
> the file /usr/lib/ocf/resources.d/heartbeat/apache and „verbosed“ it by
> simply adding set –x. This way, I can extract the scripts output from
> the logfile /var/log/cluster/corosync.log, which I appended to this
> email (hopefully it won’t get filtered).
> 
>  
> 
> The command I used to invoke the apache script mentioned above was:
> 
> pcs resource create httpd ocf:heartbeat:apache
> configfile=/usr/local/apache2/conf/httpd.conf
> httpd=/usr/local/apache2/bin/httpd
> statusurl=http://localhost/server-status
> envfiles=/usr/local/apache2/bin/envvars op monitor interval=60s
> 
>  
> 
> Before you ask: the paths are correct and mod_status is also configured
> correctly (works fine when starting Apache manually). I should also add
> that the two nodes which form this cluster are virtual (Vmware vSphere)
> hosts and living in the same network (so no firewalling between them,
> there is a dedicated firewall just before the network). I assume that it
> has something to do with the handling of the pid file, but I couldn’t
> seem to fix it until now. I pointed Apache to create the pid file in
> /var/run/httpd.pid, but that didn’t work either. Suggestions on how to
> solv this? Thanks in advance!

Do you have SELinux enabled? If so, check /var/log/audit/audit.log for
denials.

It looks like the output you attached is from the cluster's initial
probe (one-time monitor operation), and not the start operation.

>  
> 
> Kind regards,
> 
> Daniel Souvignier
> 
>  
> 
> P.S.: If you need the parameters I compiled Apache with, I can tell you,
> but I don’t think that it is relevant here.
> 
>  
> 
> --
> 
> Daniel Souvignier
> 
>  
> 
> IT Center
> 
> Gruppe: Linux-basierte Anwendungen
> 
> Abteilung: Systeme und Betrieb
> 
> RWTH Aachen University
> 
> Seffenter Weg 23
> 
> 52074 Aachen
> 
> Tel.: +49 241 80-29267
> 
> souvignier at itc.rwth-aachen.de <mailto:souvignier at itc.rwth-aachen.de>
> 
> www.itc.rwth-aachen.de <http://www.itc.rwth-aachen.de/>




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