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

[Andrew Beekhof]

On 14 May 2014, at 8:00 pm, Sékine Coulibaly <scoulibaly at gmail.com> wrote:

> Hi Andrew,
> 
> I came through some kind of solution, lightly different from what I used in my first post.
> You'll find it in the raw cibadmin attached to this post.
> BOUM,UFO,INGESTOR and QUOTAS all are applications and depend on ZK and Postgresql.
> 
> I'm somewhat stuck with 6.3 release for the moment. Right now I'm considering switching to PCS to make the transition to RHEL 6.5 or 7.x easier. Transition to RHEL 6.X is a global decision process so I'm afraid I'll stay with 6.3 for the moment.

Ok, but bare in mind that if this turns out to be a bug, I cannot fix it for 6.3
Your only way to get the fix is upgrade or build upstream yourself.

> 
> Sekine
> 
> > 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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