[Pacemaker] Pacemaket + Corosync + DRBD + Apache : apache can't start when the DocumentRoot change

Yann LE RU yann.le-ru at isen.fr
Wed Oct 31 10:19:35 EDT 2012

Document sans nom I've found the solution !!!!
I think the problem came from the script "ocf:heartbeat:apache". With 
lsb:apache2 it's OK.
It's very strange because this script seems OK, everything work if I let 
pacemaker take care of DRBD and Filesystem and that I execute the script 
manually. But if I configure pacemaker to use it it fails... (only with 

Have a good day,


Le 31/10/2012 14:00, Yann LE RU a écrit :
> Hello everybody,
> I'm a new user of pacemaker.
> I'm trying to have Apache running HA.
> To do it, I've configure a partition to be replicated with DRBD. I 
> would like to have my DocumentRoot on it.
> DRBD is working well.
> I've also configured pacemaker to monitor a Virtuel IP (to access my 
> apche service), apache, DRBD and the mounting of the filesystem.
> Everything is working with Pacemaker. I can stop one node and all the 
> services start on the other (I'm using colocation to be sure 
> everything is running on the same node and order to be sure the 
> services start in the good order).
> Now I would like to use the same DocumentRoot even if one node fails. 
> But when I change the DocumentRoot parameter to user the DRBD 
> partition, apache don't manage to start.
> If I stop corosync and start DRBD by hand, mount the filesystem by 
> hand and start apache by hand (with DocumentRoot pointing to the DRBD 
> partition), it works !!!!
> My cluster architecture is :
>   * Two nodes
>   * Each node is a Linux Debian Squeeze using pacemker and corosync
> Could you please help me ? I have no more idea !!! I've read a lot on 
> Internet and followed the tutorials. I think I did like other people 
> who have a cluster working...
> Sincerely,
> -- 
> Document sans nom
> *Yann LE RU*
> Responsable Systèmes & Réseaux
> Responsable Cycle Informatique & Réseaux
> Tél.     : +33 (0)
> Fax      : +33 (0)
> Courriel :yann.le-ru at isen.fr
>   <mailto:yann.le-ru at isen.fr>Web      :http://www.isen.fr
>   <http://www.isen.fr>

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