[ClusterLabs] CentOS 8 & drbd 9, two drbd devices and colocation

[fatcharly at gmx.de]

Hi again,

I need some help to figure out how to let a two node cluster with two drbd-devices start the master-devices on the same node.
How can I configure colocation to work that way ? I tried to bond one drbd-device with the other but that didn't work out quite well.

This is my config:
> > I'm installing a 2 node pacemaker/drbd cluster on a CentOS 8.3. I'm using this versions:
> >
> > kmod-drbd90-9.0.25-2.el8_3.elrepo.x86_64
> > drbd90-utils-9.13.1-1.el8.elrepo.x86_64
> >
> > pacemaker-cluster-libs-2.0.4-6.el8.x86_64
> > pacemaker-cli-2.0.4-6.el8.x86_64
> > pacemaker-schemas-2.0.4-6.el8.noarch
> > pacemaker-2.0.4-6.el8.x86_64
> > pacemaker-libs-2.0.4-6.el8.x86_64
> >
> > clusternode-names are lisbon and susanne
> >
> > Status of the cluster:
> > Cluster Summary:
> >   * Stack: corosync
> >   * Current DC: lisbon (version 2.0.4-6.el8-2deceaa3ae) - partition with quorum
> >   * Last updated: Mon Jan 18 16:30:21 2021
> >   * Last change:  Mon Jan 18 16:30:17 2021 by root via cibadmin on lisbon
> >   * 2 nodes configured
> >   * 7 resource instances configured
> >
> > Node List:
> >   * Online: [ lisbon susanne ]
> >
> > Active Resources:
> >   * HA-IP_1     (ocf::heartbeat:IPaddr2):        Started susanne
> >   * Clone Set: drbd_database-clone [drbd_database] (promotable):
> >     * Masters: [ susanne ]
> >     * Slaves: [ lisbon ]
> >   * fs_database (ocf::heartbeat:Filesystem):     Started susanne
> >   * Clone Set: drbd_logsfiles-clone [drbd_logsfiles] (promotable):
> >     * Masters: [ susanne ]
> >   * fs_logfiles (ocf::heartbeat:Filesystem):     Started susanne
> >
> > drbdadm status
> >
> > [root at susanne ~]# drbdadm status
> > drbd1 role:Primary
> >   disk:UpToDate
> >   lisbon role:Secondary
> >     peer-disk:UpToDate
> >
> > drbd2 role:Primary
> >   disk:UpToDate
> >   lisbon connection:Connecting
> >
> >  [root at lisbon ~]# drbdadm status
> > drbd1 role:Secondary
> >   disk:UpToDate
> >   susanne role:Primary
> >     peer-disk:UpToDate
> >
> >
> > cluster-config:
> > Cluster Name: mysql_cluster
> > Corosync Nodes:
> >  susanne lisbon
> > Pacemaker Nodes:
> >  lisbon susanne
> >
> > Resources:
> >  Resource: HA-IP_1 (class=ocf provider=heartbeat type=IPaddr2)
> >   Attributes: cidr_netmask=24 ip=192.168.18.150
> >   Operations: monitor interval=15s (HA-IP_1-monitor-interval-15s)
> >               start interval=0s timeout=20s (HA-IP_1-start-interval-0s)
> >               stop interval=0s timeout=20s (HA-IP_1-stop-interval-0s)
> >  Clone: drbd_database-clone
> >   Meta Attrs: clone-max=2 clone-node-max=1 notify=true promotable=true promoted-max=1 promoted-node-max=1
> >   Resource: drbd_database (class=ocf provider=linbit type=drbd)
> >    Attributes: drbd_resource=drbd1
> >    Operations: demote interval=0s timeout=90 (drbd_database-demote-interval-0s)
> >                monitor interval=20 role=Slave timeout=20 (drbd_database-monitor-interval-20)
> >                monitor interval=10 role=Master timeout=20 (drbd_database-monitor-interval-10)
> >                notify interval=0s timeout=90 (drbd_database-notify-interval-0s)
> >                promote interval=0s timeout=90 (drbd_database-promote-interval-0s)
> >                reload interval=0s timeout=30 (drbd_database-reload-interval-0s)
> >                start interval=0s timeout=240 (drbd_database-start-interval-0s)
> >                stop interval=0s timeout=100 (drbd_database-stop-interval-0s)
> >  Resource: fs_database (class=ocf provider=heartbeat type=Filesystem)
> >   Attributes: device=/dev/drbd1 directory=/mnt/clusterfs1 fstype=ext4
> >   Operations: monitor interval=20s timeout=40s (fs_database-monitor-interval-20s)
> >               start interval=0s timeout=60s (fs_database-start-interval-0s)
> >               stop interval=0s timeout=60s (fs_database-stop-interval-0s)
> >  Clone: drbd_logsfiles-clone
> >   Meta Attrs: clone-max=2 clone-node-max=1 notify=true promotable=true promoted-max=1 promoted-node-max=1
> >   Resource: drbd_logsfiles (class=ocf provider=linbit type=drbd)
> >    Attributes: drbd_resource=drbd2
> >    Operations: demote interval=0s timeout=90 (drbd_logsfiles-demote-interval-0s)
> >                monitor interval=20 role=Slave timeout=20 (drbd_logsfiles-monitor-interval-20)
> >                monitor interval=10 role=Master timeout=20 (drbd_logsfiles-monitor-interval-10)
> >                notify interval=0s timeout=90 (drbd_logsfiles-notify-interval-0s)
> >                promote interval=0s timeout=90 (drbd_logsfiles-promote-interval-0s)
> >                reload interval=0s timeout=30 (drbd_logsfiles-reload-interval-0s)
> >                start interval=0s timeout=240 (drbd_logsfiles-start-interval-0s)
> >                stop interval=0s timeout=100 (drbd_logsfiles-stop-interval-0s)
> >  Resource: fs_logfiles (class=ocf provider=heartbeat type=Filesystem)
> >   Attributes: device=/dev/drbd2 directory=/mnt/clusterfs2 fstype=ext4
> >   Operations: monitor interval=20s timeout=40s (fs_logfiles-monitor-interval-20s)
> >               start interval=0s timeout=60s (fs_logfiles-start-interval-0s)
> >               stop interval=0s timeout=60s (fs_logfiles-stop-interval-0s)
> >
> > Stonith Devices:
> > Fencing Levels:
> >
> > Location Constraints:
> > Ordering Constraints:
> >   start drbd_database-clone then start fs_database (kind:Mandatory) (id:order-drbd_database-clone-fs_database-mandatory)
> >   start drbd_logsfiles-clone then start fs_logfiles (kind:Mandatory) (id:order-drbd_logsfiles-clone-fs_logfiles-mandatory)
> > Colocation Constraints:
> >   fs_database with drbd_database-clone (score:INFINITY) (with-rsc-role:Master) (id:colocation-fs_database-drbd_database-clone-INFINITY)
> >   fs_logfiles with drbd_logsfiles-clone (score:INFINITY) (with-rsc-role:Master) (id:colocation-fs_logfiles-drbd_logsfiles-clone-INFINITY)
ERROR:>>>>>  drbd_logsfiles-clone with drbd_database-clone (score:INFINITY) (with-rsc-role:Master) (id:colocation-drbd_logsfiles-clone-drbd_database-clone-INFINITY)
> > Ticket Constraints:
> >
> > Alerts:
> >  No alerts defined
> >
> > Resources Defaults:
> >   No defaults set
> > Operations Defaults:
> >   No defaults set
> >
> > Cluster Properties:
> >  cluster-infrastructure: corosync
> >  cluster-name: mysql_cluster
> >  dc-version: 2.0.4-6.el8-2deceaa3ae
> >  have-watchdog: false
> >  last-lrm-refresh: 1610382881
> >  stonith-enabled: false
> >
> > Tags:
> >  No tags defined
> >
> > Quorum:
> >   Options:



Any suggestions are welcome

stay safe and healty

fatcharly