8.4. Reconfigure the Cluster for GFS2

[root@pcmk-1 ~]# crm
crm(live)# cib new GFS2
INFO: GFS2 shadow CIB created
crm(GFS2)# configure delete WebFS
crm(GFS2)# configure primitive WebFS ocf:heartbeat:Filesystem params device="/dev/drbd/by-res/wwwdata" directory="/var/www/html" fstype="gfs2"

Now that we’ve recreated the resource, we also need to recreate all the constraints that used it. This is because the shell will automatically remove any constraints that referenced WebFS.

crm(GFS2)# configure colocation WebSite-with-WebFS inf: WebSite WebFS
crm(GFS2)# configure colocation fs_on_drbd inf: WebFS WebDataClone:Master
crm(GFS2)# configure order WebFS-after-WebData inf: WebDataClone:promote WebFS:start
crm(GFS2)# configure order WebSite-after-WebFS inf: WebFS WebSite
crm(GFS2)# configure show
node pcmk-1
node pcmk-2
primitive WebData ocf:linbit:drbd \
        params drbd_resource="wwwdata" \
        op monitor interval="60s"
primitive WebFS ocf:heartbeat:Filesystem \
 params device="/dev/drbd/by-res/wwwdata" directory="/var/www/html" fstype="gfs2"
primitive WebSite ocf:heartbeat:apache \
        params configfile="/etc/httpd/conf/httpd.conf" \
        op monitor interval="1min"
primitive ClusterIP ocf:heartbeat:IPaddr2 \
        params ip="192.168.122.101" cidr_netmask="32" \
        op monitor interval="30s"
ms WebDataClone WebData \
        meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true"
colocation WebSite-with-WebFS inf: WebSite WebFS
colocation fs_on_drbd inf: WebFS WebDataClone:Master
colocation website-with-ip inf: WebSite ClusterIP
order WebFS-after-WebData inf: WebDataClone:promote WebFS:start
order WebSite-after-WebFS inf: WebFS WebSite
order apache-after-ip inf: ClusterIP WebSite
property $id="cib-bootstrap-options" \
        dc-version="1.1.5-bdd89e69ba545404d02445be1f3d72e6a203ba2f" \
        cluster-infrastructure="openais" \
        expected-quorum-votes="2" \
        stonith-enabled="false" \
        no-quorum-policy="ignore"
rsc_defaults $id="rsc-options" \
        resource-stickiness="100"

Review the configuration before uploading it to the cluster, quitting the shell and watching the cluster’s response

crm(GFS2)# cib commit GFS2
INFO: commited 'GFS2' shadow CIB to the cluster
crm(GFS2)# quit
bye
[root@pcmk-1 ~]# crm_mon
============
Last updated: Thu Sep  3 20:49:54 2009
Stack: openais
Current DC: pcmk-2 - partition with quorum
Version: 1.1.5-bdd89e69ba545404d02445be1f3d72e6a203ba2f
2 Nodes configured, 2 expected votes
6 Resources configured.
============

Online: [ pcmk-1 pcmk-2 ]

WebSite (ocf::heartbeat:apache):        Started pcmk-2
Master/Slave Set: WebDataClone
        Masters: [ pcmk-1 ]
        Slaves: [ pcmk-2 ]
ClusterIP        (ocf::heartbeat:IPaddr):        Started pcmk-2
WebFS (ocf::heartbeat:Filesystem): Started pcmk-1