[Pacemaker] Possible to colocate ms ressource with standard ones ?

[Andrew Beekhof]

On 29 Apr 2014, at 11:06 pm, Sékine Coulibaly <scoulibaly at gmail.com> wrote:

> Hi,
> 
> Let me explain my use case. I'm using RHEL 6.3

fwiw, there are updates to pacemaker 1.1.10 in 6.4 and 6.5.
Its even supported now.

> with Corosync + Pacemaker + PostgreSQL9.2 + repmgr 2.0. I have two nodes names clustera and clusterb.
> 
> I have a total of 3 resources :
> - APACHE
> - BOUM
> - MS_POSTGRESQL
> 
> They are defined as follow :
> 
> sudo crm configure  primitive APACHE ocf:heartbeat:apache \
>    params configfile=/etc/httpd/conf/httpd.conf \
>    op monitor interval=5s timeout=10s \
>    op start interval=0 timeout=10s \
>    op stop interval=0 timeout=10s
> 
>  sudo crm configure primitive BOUM ocf:heartbeat:anything \
>    params binfile=/usr/local/boum/current/bin/boum \
>    workdir=/var/boum \
>    logfile=/var/log/boum/boum_STDOUT \
>    errlogfile=/var/log/boum/boum_STDERR \
>    pidfile=/var/run/boum.pid \
>    op monitor interval=5s timeout=10s \
>    op start interval=0 timeout=10s \
>    op stop interval=0 timeout=10s
> 
> sudo crm configure primitive POSTGRESQL ocf:xxxxxx:postgresql \
>    params repmgr_conf=/var/lib/pgsql/repmgr/repmgr.conf pgctl=/usr/pgsql-9.2/bin/pg_ctl pgdata=/opt/pgdata \
>    op start interval=0 timeout=90s \
>    op stop interval=0 timeout=60s \
>    op promote interval=0 timeout=120s \
>    op monitor interval=53s role=Master \
>    op monitor interval=60s role=Slave
> 
> Since the PostgreSQL is in streaming replication, I need to have a master and a slave constantly running. Hence, I created an MasterSlave resource, called MS_POSTGRESQL.
> 
> I want to that APACHE, BOUM and the master node of PostgreSQL run altogether on the same node. It looks like that as soon as I add a colocation, the Postgresql slave doesn't start anymore.
> 
> I end up with :
> 
> Online: [ clusterb clustera ]
> 
>  Master/Slave Set: MS_POSTGRESQL [POSTGRESQL]
>      Masters: [ clustera ]
>      Stopped: [ POSTGRESQL:1 ]
> APACHE  (ocf::heartbeat:apache):        Started clustera
> BOUM     (ocf::heartbeat:anything):	Started clustera
> 
> My configuration is as follows :
> 
> 
> node clustera \
>         attributes standby="off"
> node clusterb \
>         attributes standby="off"
> primitive APACHE ocf:heartbeat:apache \
>         params configfile="/etc/httpd/conf/httpd.conf" \
>         op monitor interval="5s" timeout="10s" \
>         op start interval="0" timeout="10s" \
>         op stop interval="0" timeout="10s" \
>         meta target-role="Started"
> primitive BOUM ocf:heartbeat:anything \
>         params binfile="/usr/local/boum/current/bin/boum" workdir="/var/boum" logfile="/var/log/boum/boum_STDOUT" errlogfile="/var/log/boum/boum_STDERR" pidfile="/var/run/boum.pid" \
>         op monitor interval="5s" timeout="10s" \
>         op start interval="0" timeout="10s" \
>         op stop interval="0" timeout="10s"
> primitive POSTGRESQL ocf:xxxxxxx:postgresql \
>         params repmgr_conf="/var/lib/pgsql/repmgr/repmgr.conf" pgctl="/usr/pgsql-9.2/bin/pg_ctl" pgdata="/opt/pgdata" \
>         op start interval="0" timeout="90s" \
>         op stop interval="0" timeout="60s" \
>         op promote interval="0" timeout="120s" \
>         op monitor interval="53s" role="Master" \
>         op monitor interval="60s" role="Slave"
> ms MS_POSTGRESQL POSTGRESQL \
>         meta clone-max="2" target-role="Started" resource-stickiness="100" notify="true"
> colocation link-resources inf: ZK UFO BOUM APACHE MS_POSTGRESQL

Could you send the raw xml (cibadmin -Ql) please?
I've never gotten used to crmsh's colocation syntax and don't have it installed locally (pcs is the supplied tool for configuring pacemaker on rhel) 

> property $id="cib-bootstrap-options" \
>         dc-version="1.1.7-6.el6-148fccfd5985c5590cc601123c6c16e966b85d14" \
>         cluster-infrastructure="openais" \
>         expected-quorum-votes="2" \
>         stonith-enabled="false" \
>         no-quorum-policy="ignore" \
>         default-resource-stickiness="10" \
>         start-failure-is-fatal="false" \
>         last-lrm-refresh="1398775386"
> 
> Is this a normal behaviour ? If it is, is there a workaround I didn't think of ?
> 
> 
> 
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