Pacemaker iscsi

Docs

• https://www.linuxmonkey.co.za/index.php?mod=SAN
• iSCSITarget manpage
• iSCSILogicalUnit manpage
• https://help.ubuntu.com/community/HighlyAvailableiSCSITarget
• Managing iSCSI Initiator connections with Windows PowerShell

Sample config

Resources

pcs resource create ClusterIP ocf:heartbeat:IPaddr2 ip=192.168.100.32 cidr_netmask=32 op monitor interval=30s
pcs resource create ISCSI0 ocf:heartbeat:iSCSITarget iqn="iqn.2018-5.mynet:drbd0" tid=1 op monitor interval="10s"
pcs resource create ISCSI0Lun1 ocf:heartbeat:iSCSILogicalUnit target_iqn="iqn.2018-5.mynet:drbd0" lun="1" path="/dev/DRBD/drbd0" op monitor interval="10s"

Order constraints

pcs constraint order promote DRBD0-Clone then start ClusterIP
pcs constraint start ClusterIP then start ISCSI0
pcs constraint order start ISCSI0 then start ISCSI0Lun1

Colocation constraints

pcs constraint colocation add ClusterIP DRBD0-Clone INFINITY with-rsc-role=Master
pcs constraint colocation add ISCSI0 ClusterIP 
pcs constraint colocation add ISCSI0Lun1 ISCSI0