[ClusterLabs] pacemaker pingd with ms drbd = double masters short time when disconnected networks.

[emmanuel segura]

You need to configure the stonith and drbd stonith handler

2017-12-19 8:19 GMT+01:00 Прокопов Павел <prokopov at experium.ru>:

> 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 at 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 at 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 at 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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