===== SUSE 12 HA =====
On both nodes:
<code>
echo softdog > /etc/modules-load.d/watchdog.conf
systemctl restart systemd-modules-load
lsmod | egrep "(wd|dog)"
</code>
On one node:
<code>
sbd -d /dev/sdb create
sbd -d /dev/sdb watch
sbd -d /dev/sdb message ha2 test
systemctl stop sbd
</code>

Modify /etc/sysconfig/sbd:
<code>
SBD_DEVICE="/dev/sdb"
SBD_OPTS="-W"
</code>

On first node:
<code>
ha-cluster-init --name hacluster
</code>
On second node:
<code>
ha-cluster-join
</code>
Check HAWK2 https://192.168.122.10:7630/

Add resources:
<code>
crm configure
primitive vip ocf:heartbeat:IPaddr \
params ip=192.168.122.30 op monitor interval=60s
commit
primitive clvmd ocf:heartbeat:clvm \
op stop interval=0 timeout=100 \
op start interval=0 timeout=90 \
op monitor interval=90 timeout=90
primitive dlm ocf:pacemaker:controld \
op start timeout="90" \
op stop timeout="100" \
op monitor interval="60" timeout="60"
primitive sbd_stonith stonith:external/sbd \
params pcmk_delay_max=30
group storage dlm clvmd
clone cluster-storage storage \
meta interleave="true" ordered=true
commit
</code>
Configure storage:
<code>
pvcreate /dev/sda
vgcreate -cy vgcluster /dev/sda
lvcreate -n opt-ibm -L1G vgcluster
lvcreate -n opt-mqm -L1G vgcluster
lvcreate -n var-mqm -L1G vgcluster	
lvcreate -n var-mqsi -L1G vgcluster
mkfs.xfs /dev/vgcluster/var-mqsi
mkfs.xfs /dev/vgcluster/var-mqm
mkfs.xfs /dev/vgcluster/opt-ibm
mkfs.xfs /dev/vgcluster/opt-mqm
</code>
Configure storage on cluster:
<code>
crm configure
primitive vgcluster LVM \
params volgrpname=vgcluster \
op monitor timeout=30 interval=10 \
op_params interval=10
primitive opt-ibm ocf:heartbeat:Filesystem \
params device="/dev/vgcluster/opt-ibm" directory="/opt/IBM" fstype="xfs" \
op monitor interval="20" timeout="40" \
op start timeout="60" op stop timeout="60" 
primitive opt-mqm ocf:heartbeat:Filesystem \
params device="/dev/vgcluster/opt-mqm" directory="/opt/mqm" fstype="xfs" \
op monitor interval="20" timeout="40" \
op start timeout="60" op stop timeout="60" 
primitive var-mqm ocf:heartbeat:Filesystem \
params device="/dev/vgcluster/var-mqm" directory="/ha/mqm" fstype="xfs" \
op monitor interval="20" timeout="40" \
op start timeout="60" op stop timeout="60" 
primitive var-mqsi ocf:heartbeat:Filesystem \
params device="/dev/vgcluster/var-mqsi" directory="/ha/mqsi" fstype="xfs" \
op monitor interval="20" timeout="40" \
op start timeout="60" op stop timeout="60"  
group cluster-app vip vgcluster opt-ibm opt-mqm var-mqm var-mqsi
commit
</code>

==== Considerations for zVM ====
  * https://www.ibm.com/downloads/cas/2Q3XBRPQ
  * https://www.ibm.com/support/knowledgecenter/en/SSB27U_6.4.0/com.ibm.zvm.v640.hcpb7/linkcmd.htm