Hello!
pacemaker pingd with ms drbd = double masters short time when
disconnected networks.
My crm config:
node 168885811: pp-pacemaker1.heliosoft.ru
node 168885812: pp-pacemaker2.heliosoft.ru
primitive drbd1 ocf:linbit:drbd \
params drbd_resource=drbd1 \
op monitor interval=60s \
op start interval=15 timeout=240s \
op stop interval=15 timeout=240s \
op monitor role=Master interval=30s \
op monitor role=Slave interval=60s
primitive fs_drbd1 Filesystem \
params device="/dev/drbd1" directory="/mnt/drbd1" fstype=ext4
options=noatime
primitive pinger ocf:pacemaker:ping \
params host_list=10.16.4.1 multiplier=100 \
op monitor interval=15s \
op start interval=0 timeout=5s \
op stop interval=0
primitive vip IPaddr2 \
params ip=10.16.5.227 nic=eth0 \
op monitor interval=10s
primitive vip2 IPaddr2 \
params ip=10.16.254.50 nic=eth1 \
op monitor interval=10s
group group_master fs_drbd1 vip vip2
ms ms_drbd1 drbd1 \
meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1
notify=true
clone pingerclone pinger \
meta globally-unique=false
colocation colocation_master inf: ms_drbd1:Master group_master
location location_master_ms_drbd1 ms_drbd1 \
rule $role=Master -inf: not_defined pingd or pingd lte 0
order main_order Mandatory: pingerclone:start ms_drbd1:promote
group_master:start
property cib-bootstrap-options: \
stonith-enabled=false \
no-quorum-policy=ignore \
default-resource-stickiness=500 \
cluster-name=pp1
root@pp-pacemaker2:~# crm_mon -1
Stack: corosync
Current DC: pp-pacemaker2.heliosoft.ru (version 1.1.16-94ff4df) -
partition with quorum
Last updated: Fri Dec 15 13:48:10 2017
Last change: Fri Dec 15 13:46:38 2017 by root via cibadmin on
pp-pacemaker1.heliosoft.ru
2 nodes configured
7 resources configured
Online: [ pp-pacemaker1.heliosoft.ru pp-pacemaker2.heliosoft.ru ]
Active resources:
Resource Group: group_master
fs_drbd1 (ocf::heartbeat:Filesystem): Started
pp-pacemaker1.heliosoft.ru
vip (ocf::heartbeat:IPaddr2): Started pp-pacemaker1.heliosoft.ru
vip2 (ocf::heartbeat:IPaddr2): Started
pp-pacemaker1.heliosoft.ru
Master/Slave Set: ms_drbd1 [drbd1]
Masters: [ pp-pacemaker1.heliosoft.ru ]
Slaves: [ pp-pacemaker2.heliosoft.ru ]
Clone Set: pingerclone [pinger]
Started: [ pp-pacemaker1.heliosoft.ru pp-pacemaker2.heliosoft.ru ]
#end crm_mon
When I disconnect pp-pacemaker2 from all networks, I have:
root@pp-pacemaker2:~# crm_mon -1
Stack: corosync
Current DC: pp-pacemaker2.heliosoft.ru (version 1.1.16-94ff4df) -
partition with quorum
Last updated: Fri Dec 15 13:53:15 2017
Last change: Fri Dec 15 13:53:00 2017 by root via cibadmin on
pp-pacemaker2.heliosoft.ru
2 nodes configured
7 resources configured
Online: [ pp-pacemaker2.heliosoft.ru]
OFFLINE: [pp-pacemaker1.heliosoft.ru ]
Active resources:
Resource Group: group_master
fs_drbd1 (ocf::heartbeat:Filesystem): Started
pp-pacemaker2.heliosoft.ru
vip (ocf::heartbeat:IPaddr2): Started pp-pacemaker2.heliosoft.ru
vip2 (ocf::heartbeat:IPaddr2): Started
pp-pacemaker2.heliosoft.ru
Master/Slave Set: ms_drbd1 [drbd1]
Masters: [ pp-pacemaker2.heliosoft.ru ]
Clone Set: pingerclone [pinger]
Started: [ pp-pacemaker2.heliosoft.ru ]
#end crm_mon
Wait 5 seconds.
root@pp-pacemaker2:~# crm_mon -1
Stack: corosync
Current DC: pp-pacemaker2.heliosoft.ru (version 1.1.16-94ff4df) -
partition with quorum
Last updated: Fri Dec 15 13:48:10 2017
Last change: Fri Dec 15 13:46:38 2017 by root via cibadmin on
pp-pacemaker1.heliosoft.ru
2 nodes configured
7 resources configured
Online: [ pp-pacemaker2.heliosoft.ru
OFFLINE: [pp-pacemaker1.heliosoft.ru ]
Active resources:
Master/Slave Set: ms_drbd1 [drbd1]
Slaves: [ pp-pacemaker2.heliosoft.ru ]
Clone Set: pingerclone [pinger]
Started: [ pp-pacemaker2.heliosoft.ru ]
#end crm_mon
Why pp-pacemaker2 first become a master? It breaks drdb.
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