The Pacemaker module "ocf:heartbeat:CTDB" does not work on Bionic

[David Lechevalier]

Pacemaker on Ubuntu 18.04 is not able to create a resource of type: ocf:heartbeat:CTDB.
It seems to be because the command
<code>
ctdb version
</code>
return Ubuntu in the vesion.

The issue is fixed upstream in the commit https://github.com/ClusterLabs/resource-agents/commit/0c513d16259d94b492f0fe8dd0cbc2e5f98ee912#diff-6f2dd2a1f5930ef451c54c7bf8df90adc5675aff2e0018552b5f428c66c59060

= To reproduce =

* apt install ctdb pacemaker corosync pcs
* passwd hacluster
* pcs cluster auth localhost -u hacluster
* pcs cluster setup --name test localhost --force --enable
* pcs cluster start --all
* echo "127.0.0.1" > /etc/ctdb/nodes
* touch /etc/default/ctdb
* pcs resource create ctdb ocf:heartbeat:CTDB ctdb_recovery_lock="/tmp/lock"

== Actual result ==
The command
<code>
pcs resource debug-start ctdb
</code>
return
<code>
Operation start for ctdb (ocf:heartbeat:CTDB) returned: 'unknown error' (1)
....

</code>

== Expected result ==

<code>
pcs resource debug-start ctdb
</code>
return
<code>
Operation start for ctdb (ocf:heartbeat:CTDB) returned: 'ok' (0)
....

</code>

[Paride Legovini (paride)]

Thanks David for this bug report. I think this bug belongs to the resource-agents package and not to pacemaker. Please note that resource-agents is in the "universe" component of Ubuntu, and therefore only gets community support. (Ubuntu 21.10 will also offer a resource-agent-supported package offering a subset of the resource-agents with support.)

The fix you pointed to [1] was reverted shortly after being introduced for reasons that are not immediately clear. A larger refactor of those functions was made several versions later in [3], however even should it apply cleanly on Bionic's version proposing it as a SRU fix will require extra care. This is IMHO a starting point for driving the fix forward.

[1] https://github.com/ClusterLabs/resource-agents/commit/0c513d16259d94b492f0fe8dd0cbc2e5f98ee912
[2] https://github.com/ClusterLabs/resource-agents/commit/489afee8c424cf82b398832191bbdf4d06b2e1f2
[3] https://github.com/ClusterLabs/resource-agents/commit/b4df0873bb986524d826a5ba9b24b135cccc0160

[David Lechevalier (dlecheva)]

Hi Paride,
Thank you. I didn't know this subtility about resource-agents.

I provided this fix because it is the simple commit to fix the current issue.
What do you mean by "universe" and community support ?
Is there a repository where I can propose something ?

[Paride Legovini (paride)]

Hi David, on "main" vs "universe" see:

  https://help.ubuntu.com/community/Repositories/Ubuntu

For community help, possibly on driving a Stable Release Upgrade, see:

  https://ubuntu.com/support/community-support

[Lucas Kanashiro (lucaskanashiro)]

Also please keep in mind that the usage of pcs is still not fully supported by the Ubuntu community, we still recommend crmsh:

https://ubuntu.com/server/docs/ubuntu-ha-introduction

If you want to prepare a package to apply the upstream patch Paride linked I'll be happy to review/sponsor it. For more information on Stable Release Updates (SRU) check the following page:

https://wiki.ubuntu.com/StableReleaseUpdates