[ClusterLabs] ping Resource Agent doesnt work

[Ken Gaillot]

On Fri, 2018-07-20 at 08:41 +0800, Confidential Company wrote:
> I configured ping-RA via ocf:pacemaker. During testing the resource-
> agent works fine, it executes ping action to my gateway every 10
> seconds and 3 attempts. But I noticed that even I disconnect the
> physical link of node where the resource resides, it doesnt failover
> to other node.

The ping agent by itself only sets a node attribute. Failover requires
additional constraints:

http://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/1.1/html-single/Pacemaker_Explained/index.html#_moving_resources_due_to_connectivity_changes


> 
> 
> IP CONFIG:
> 
> 172.16.10.0/24 = interface to gateway
> 172.16.11.0/24= heartbeat link (interface to avoid split brain as my
> goal is to only failover ping-resource after 3-attempts failure to
> ping my gateway)
> 
> CONFIG:
> 
> [root at node1 ~]# pcs config
> Cluster Name: clusterPa
> Corosync Nodes:
>  node1 node2
> Pacemaker Nodes:
>  node1 node2
> 
> Resources:
>  Resource: ping-gateway (class=ocf provider=pacemaker type=ping)
>   Attributes: host_list=172.16.10.1
>   Operations: monitor interval=10 timeout=60 (ping-gateway-monitor-
> interval-10)
>               start interval=0s timeout=60 (ping-gateway-start-
> interval-0s)
>               stop interval=0s timeout=20 (ping-gateway-stop-
> interval-0s)
> 
> Stonith Devices:
> Fencing Levels:
> 
> Location Constraints:
> Ordering Constraints:
> Colocation Constraints:
> Ticket Constraints:
> 
> Alerts:
>  No alerts defined
> 
> Resources Defaults:
>  No defaults set
> Operations Defaults:
>  No defaults set
> 
> Cluster Properties:
>  cluster-infrastructure: corosync
>  cluster-name: clusterPa
>  dc-version: 1.1.16-12.el7-94ff4df
>  have-watchdog: false
>  last-lrm-refresh: 1531899781
>  stonith-enabled: false
> 
> Quorum:
>   Options:
> [root at node1 ~]#  
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-- 
Ken Gaillot <kgaillot at redhat.com>