[Pacemaker] Using Pacemaker/Corosync to manage 2 node SHARED-DISK Cluster

Phil Hunt Phil.Hunt at orionhealth.com
Fri Apr 8 12:13:01 EDT 2011


I have been playing with DRBD, thats cool

But I have 2 VM RHEL linux boxes.  They each have a boot device (20g) and a shared ISCSI 200G volume.  I've played with ucarp and have the commands to make available/mount the disk and dismount the shared disk using vgchange/mount/umount, etc.

But decided to user packemaker/heartbeat, since it is more robust
Got corosync running, vip running.

But I do not see how to make the Pacemaker section mount or dismount a STANDARD EXT3
disk shared.  I've seen tons of tutorials for drbd and clustered FS  but none showing a simple mount of a disk as a resouce on a node becoming master, or how to dismount it.

Does pacemaker run a script if requested?  Or is the mount/dismount all hard-coded.

I know I'm missing something simple here.  I built the following, but the colocation and order commands error out as syntax error:

node prodmessage1v
node prodmessage2v
primitive p_fs_data ocf:heartbeat:Filesystem \
        params device="/dev/mapper/vg2-dbdata" directory="/data" fstype="ext3"
primitive p_ip ocf:heartbeat:IPaddr2 \
        params ip="" cidr_netmask="32" \
        op monitor interval="30s"
primitive p_ping ocf:pacemaker:ping \
        params name="p_ping" host_list="" \
        op monitor interval="15s" timeout="30s"
primitive p_rhap lsb:rhapsody \
        op monitor interval="60s" timeout="120s"
group g_cluster_services p_ip p_fs_data p_rhap
clone c_ping p_ping \
        meta globally-unique="false"
location loc_ping g_cluster_services \
        rule $id="loc_ping-rule" -inf: not_defined p_ping or p_ping lte 0
colocation colo_mnt_on_master inf: g_cluster_services
order ord_mount_after_drbd inf: g_cluster_services:start
property $id="cib-bootstrap-options" \
        dc-version="1.0.10-da7075976b5ff0bee71074385f8fd02f296ec8a3" \
        cluster-infrastructure="openais" \
        expected-quorum-votes="2" \
        stonith-enabled="false" \
rsc_defaults $id="rsc-options" \


PHIL HUNT AMS Consultant 
phil.hunt at orionhealth.com 
P: +1 857 488 4749 
M: +1 508 654 7371 
S: philhu0724 

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