[ClusterLabs] ovndb-servers resource agent doesn't work on pcs 0.9.164

[Ken Gaillot]

On Thu, 2020-09-03 at 23:10 +0700, Popoi Zen wrote:
> Hi, I try to create ovn cluster using ovndb-servers resource agent
> from Pacemaker but it get error and failed.
> 
> ```
> instructor at ag-controller0:~$ sudo pcs status
> Cluster name: os-ha
> Stack: corosync
> Current DC: ag-controller2 (version 1.1.18-2b07d5c5a9) - partition
> with quorum
> Last updated: Thu Sep  3 23:01:03 2020
> Last change: Thu Sep  3 22:58:13 2020 by root via cibadmin on ag-
> controller0
> 
> 3 nodes configured
> 8 resources configured
> 
> Online: [ ag-controller0 ag-controller1 ag-controller2 ]
> 
> Full list of resources:
> 
>  internal_vip	(ocf::heartbeat:IPaddr2):	Started ag-controller0
>  public_vip	(ocf::heartbeat:IPaddr2):	Started ag-controller0
>  Clone Set: lb-haproxy-clone [lb-haproxy]
>      Started: [ ag-controller0 ]
>      Stopped: [ ag-controller1 ag-controller2 ]
>  Clone Set: wsgi-keystone-clone [wsgi-keystone]
>      Started: [ ag-controller0 ag-controller1 ag-controller2 ]
> 
> Daemon Status:
>   corosync: active/enabled
>   pacemaker: active/enabled
>   pcsd: active/enabled
> ```
> 
> I am using this guide 
> https://docs.openvswitch.org/en/latest/topics/integration/.
> 
> 1. Modify it resource agent symlink to the right path.
> instructor at ag-controller0:~$ ll /usr/lib/ocf/resource.d/ovn/ovndb-
> servers
> lrwxrwxrwx 1 root root 40 Sep  3 22:26
> /usr/lib/ocf/resource.d/ovn/ovndb-servers ->
> /usr/share/ovn/scripts/ovndb-servers.ocf*
> 
> 2. Create ovndb_servers resource
> instructor at ag-controller0:~$ sudo pcs resource create ovndb_servers
> ocf:ovn:ovndb-servers master_ip=10.50.50.100
> ovn_ctl=/usr/share/ovn/scripts/ovn-ctl op monitor interval="10s" op
> monitor role=Master interval="15s"
> instructor at ag-controller0:~$ sudo pcs resource master ovndb_servers-
> master ovndb_servers meta notify="true"
> 
> 3.  Create contraint
> sudo pcs constraint order promote ovndb_servers-master then
> internal_vip
> 
> 4. Check status, ovndb still on stopped status
> ```
> Online: [ ag-controller0 ag-controller1 ag-controller2 ]
> 
> Full list of resources:
> 
>  internal_vip	(ocf::heartbeat:IPaddr2):	Started ag-controller0
>  public_vip	(ocf::heartbeat:IPaddr2):	Started ag-controller0
>  Clone Set: lb-haproxy-clone [lb-haproxy]
>      Started: [ ag-controller0 ]
>      Stopped: [ ag-controller1 ag-controller2 ]
>  Clone Set: wsgi-keystone-clone [wsgi-keystone]
>      Started: [ ag-controller0 ag-controller1 ag-controller2 ]
>  Master/Slave Set: ovndb_servers-master [ovndb_servers]
>      Stopped: [ ag-controller0 ag-controller1 ag-controller2 ]
> 
> Daemon Status:
>   corosync: active/enabled
>   pacemaker: active/enabled
>   pcsd: active/enabled
> ```
> 5. Create collocation
> sudo pcs constraint colocation add internal_vip with master
> ovndb_servers-master score=INFINITY
> 
> 6. Check my pacemaker status again, my VIP resource and ovndb_servers
> stopped.
> ```
> Online: [ ag-controller0 ag-controller1 ag-controller2 ]
> 
> Full list of resources:
> 
>  internal_vip	(ocf::heartbeat:IPaddr2):	Stopped
>  public_vip	(ocf::heartbeat:IPaddr2):	Stopped
>  Clone Set: lb-haproxy-clone [lb-haproxy]
>      Stopped: [ ag-controller0 ag-controller1 ag-controller2 ]
>  Clone Set: wsgi-keystone-clone [wsgi-keystone]
>      Started: [ ag-controller0 ag-controller1 ag-controller2 ]
>  Master/Slave Set: ovndb_servers-master [ovndb_servers]
>      Stopped: [ ag-controller0 ag-controller1 ag-controller2 ]
> ```
> 
> 
> Is there any working guide that works? Or I miss something on my
> configuration?
> 
> 
> Regards

Check the system log and pacemaker detail log for errors. You can also
try "crm_resource --why -r ovndb_servers" to see if there's an obvious
reason it's stopped. If none of that helps, try "pcs resource debug-
start ovndb_servers --full" on one node to see if that gives additional
info (that will launch the resource outside pacemaker's control, so
it's a good idea to unmanage it in pacemaker first). 
-- 
Ken Gaillot <kgaillot at redhat.com>