[Pacemaker] location ping rules

[Andrew Beekhof]

On 7 Nov 2013, at 9:34 pm, s.oreilly <s.oreilly at linnovations.co.uk> wrote:

> Having some trouble getting a location rule to work.
> 
> Here is my current config:
> 
> 
> Resources:
> Master: master_drbd
>  Meta Attrs: master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
>  Resource: drbd_mysql (class=ocf provider=linbit type=drbd)
>   Attributes: drbd_resource=clusterdb_res
>   Operations: monitor interval=15s (drbd_mysql-interval-15s)
> Group: mysql_grp
>  Resource: MySQLfs (class=ocf provider=heartbeat type=Filesystem)
>   Attributes: device=/dev/drbd0 directory=/var/lib/mysql_drbd fstype=xfs
>  Resource: ClusterIP (class=ocf provider=heartbeat type=IPaddr2)
>   Attributes: ip=10.*.*.* cidr_netmask=24 nic=bond0
>   Operations: monitor interval=30s (ClusterIP-interval-30s)
>  Resource: mysql (class=ocf provider=heartbeat type=mysql)
>   Attributes: config=/var/lib/mysql_drbd/my.cnf socket=/var/lib/mysql/mysql.sock
> pid=/var/lib/mysql/mysql.pid datadir=/var/lib/mysql_drbd/data
> binary=/usr/bin/mysqld_safe
>   Operations: monitor interval=20s timeout=30s (mysql-timeout-30s)
> Clone: ping-clone
>  Meta Attrs: globally-unique=false
>  Resource: ping (class=ocf provider=pacemaker type=ping)
>   Attributes: host_list=10.*.*.* multiplier=1000 timeout=60s
>   Operations: monitor interval=15s (ping-interval-15s)
> 
> Stonith Devices:
> Fencing Levels:
> 
> Location Constraints:
> Ordering Constraints:
>  promote master_drbd then start mysql_grp (Mandatory)
> (id:order-master_drbd-mysql_grp-mandatory)
> Colocation Constraints:
>  mysql_grp with master_drbd (INFINITY) (with-rsc-role:Master)
> (id:colocation-mysql_grp-master_drbd-INFINITY)
> 
> I am trying to add a location rule to fail over if the network goes down on the
> primary node with the following rule:
> 
> pcs constraint location master_drbd rule -INFINITY: not_defined ping or ping lte 0

You'll need to split it up:

pcs constraint location master_drbd rule -INFINITY: not_defined ping
pcs constraint location master_drbd rule -INFINITY: ping lte 0

pcs doesn't understand complex rules yet.

> 
> This is just breaking the cluster though and nothing is started on either node.
> 
> Can anyone help?
> 
> 
> Regards
> 
> 
> 
> Sean O'Reilly
> 
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