Example SAN Cluster Configuration

The following example provides HA iSCSI storage resource.

primitive drbd_r0 ocf:linbit:drbd \
        params drbd_resource="r0" \
        op start interval="0" timeout="240s" \
        op stop interval="0" timeout="100s" \
        op monitor interval="11s" role="Master" \
        op monitor interval="10s"

primitive iscsi_lun1 ocf:heartbeat:iSCSILogicalUnit \
        params \
               implementation="tgt" \
               target_iqn="iqn.2010-07.com.example:storage.disk" \
               lun="1" \
               path="/dev/drbd0" \
        op start interval="0" timeout="10s" \
        op stop interval="0" timeout="10s" \
        op monitor interval="10s" timeout="10s"

primitive iscsi_target ocf:heartbeat:iSCSITarget \
        params \
               implementation="tgt" \
               iqn="iqn.2010-07.com.example:storage.disk" \
               tid="1" \
               allowed_initiators="192.168.0.0/24" \
        op start interval="0" timeout="10s" \
        op stop interval="0" timeout="10s" \
        op monitor interval="10s" timeout="10s" \
        meta is-managed="true" target-role="Started"

primitive net_conn ocf:pacemaker:ping \
        params \
               pidfile="/var/run/ping.pid" \
               host_list="192.168.0.1" \
        op start interval="0" timeout="60s" \
        op stop interval="0" timeout="20s" \
        op monitor interval="10s" timeout="60s"

primitive san_ip ocf:heartbeat:IPaddr2 \
        params \
               ip="192.168.0.120" \
               cidr_netmask="32" \
        op monitor interval="10s"

primitive tgtd lsb:tgtd \
        op monitor interval="10s"

ms ms_drbd_r0 drbd_r0 meta \
        master-max="1" \
        master-node-max="1" \
        clone-max="2" \
        clone-node-max="1" \
        notify="true" \
        target-role="Master" 
        
clone clone_net_conn net_conn \
        meta clone-node-max="1" clone-max="2"

location ms_drbd_r0-no-conn ms_drbd_r0 \
        rule $id="ms_drbd_r0-no-conn-rule" $role="Master" -inf: \
        not_defined pingd or pingd number:lte 0

colocation group_san-with-ms_drbd0_r0 inf: \
        ms_drbd_r0:Master san_ip tgtd iscsi_target iscsi_lun1

order iscsi_target-after-tgtd inf: tgtd iscsi_target

order lun1-after-iscsi inf: iscsi_target iscsi_lun1

order san_ip-after-ms_drbd0_r0 inf: ms_drbd_r0:promote san_ip:start

order tgtd-after-san_ip inf: san_ip tgtd