Duplicate entries in enabled_share_backends option of manila.conf, when there is more than 1 Ganesha unit

[Vladimir Grevtsev]

# Environment

focal-ussuri; latest charms
juju status: https://paste.ubuntu.com/p/Dt6PTKpdgX/

# Steps to reproduce

0. Deploy the cloud with single Manila and Manila-Ganesha units
1. Verify there is only one share backend enabled

ubuntu@infra-node1:~/pcb-plus-01-bundle$ j run --unit manila/0 'grep cephfs /etc/manila/manila.conf'
enabled_share_backends = cephfsnfs1

2. Add new Ganesha unit

juju add-unit manila-ganesha --to lxd:5

3. Wait, until second unit will become green

$ j status manila*
Model Controller Cloud/Region Version SLA Timestamp
openstack foundations-maas maas_cloud 2.8.10 unsupported 11:59:46Z

SAAS Status Store URL
graylog active foundations-maas admin/lma.graylog-beats
nagios active foundations-maas admin/lma.nagios-monitors
prometheus active foundations-maas admin/lma.prometheus-target

App Version Status Scale Charm Store Rev OS Notes
hacluster-manila active 1 hacluster jujucharms 76 ubuntu
hacluster-manila-ganesha active 2 hacluster jujucharms 76 ubuntu
manila 10.0.0 active 1 manila jujucharms 29 ubuntu
manila-ganesha 15.2.11 active 2 manila-ganesha jujucharms 10 ubuntu
manila-ganesha-mysql-router 8.0.25 active 2 mysql-router jujucharms 8 ubuntu
manila-mysql-router 8.0.25 active 1 mysql-router jujucharms 8 ubuntu

Unit Workload Agent Machine Public address Ports Message
manila-ganesha/0* active idle 4/lxd/5 172.16.151.71 Unit is ready
  hacluster-manila-ganesha/0* active idle 172.16.151.71 Unit is ready and clustered
  manila-ganesha-mysql-router/0* active idle 172.16.151.71 Unit is ready
manila-ganesha/1 active idle 5/lxd/10 172.16.151.188 Unit is ready
  hacluster-manila-ganesha/1 active idle 172.16.151.188 Unit is ready and clustered
  manila-ganesha-mysql-router/1 active idle 172.16.151.188 Unit is ready
manila/0* active idle 4/lxd/4 172.16.151.100 8786/tcp Unit is ready
  hacluster-manila/0* active idle 172.16.151.100 Unit is ready and clustered
  manila-mysql-router/0* active idle 172.16.151.100 Unit is ready

4. Check the manila.conf:

$ j run --unit manila/0 'grep cephfs /etc/manila/manila.conf'
enabled_share_backends = cephfsnfs1,cephfsnfs1

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-manila/+/796810

[Liam Young (gnuoy)]

https://review.opendev.org/c/openstack/charm-manila/+/796810

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-manila/+/796810
Committed: https://opendev.org/openstack/charm-manila/commit/6c749e8be987d2ee2c0a00ba20cf42e7debb06e3
Submitter: "Zuul (22348)"
Branch: master

commit 6c749e8be987d2ee2c0a00ba20cf42e7debb06e3
Author: Liam Young <email address hidden>
Date: Thu Jun 17 09:48:24 2021 +0000

    Remove duplicate backend from manilla.conf

    Change-Id: Ied3af7ada58271f9a2d042fe5725807752b9553a
    Closes-Bug: #1929939