nova-cloud-controller requires memcache

[Michał Ajduk]

This bundle does not include memcached. Nova-cloud-controller requires memcache for correct operation.

[Alex Kavanagh (ajkavanagh)]

Which bundle?

[Michał Ajduk (majduk)]

For example bundle [1], Openstack Base. But effectively all Openstack bundles published in juju charm store.

[1] https://api.jujucharms.com/charmstore/v5/bundle/openstack-base-62/archive/bundle.yaml

[Alex Kavanagh (ajkavanagh)]

Due to https://docs.openstack.org/charm-guide/latest/1904.html#nova-cloud-controller-single-nova-consoleauth clouds running with 19.04+ charms need memcached for the nova-consoleauth daemons so that the auth tokens are shared when nova-cc is HA in a deployment. Setting bug to triaged/medium

[macchese (max-liccardo)]

I have the same problem.
I used openstack base #70 (https://jaas.ai/openstack-base) and bundle.yaml doesn't have memcached.
My problem is nova-cloud-controller which need a relation to memcached.

How to reproduce:
1) install openstack base #70 bundle.
2) wait nova packages all installed
3) check by juju status

This happens to me:
$ juju status nova-cloud-controller
Model Controller Cloud/Region Version SLA Timestamp
openstack-test maas-controller invalsi-maas/default 2.8.7 unsupported 16:57:21+01:00

App Version Status Scale Charm Store Rev OS Notes
nova-cloud-controller 22.0.0 blocked 3 nova-cloud-controller jujucharms 346 ubuntu
nova-cloud-controller-hacluster active 3 hacluster jujucharms 72 ubuntu
nova-mysql-router 8.0.22 active 3 mysql-router jujucharms 3 ubuntu

Unit Workload Agent Machine Public address Ports Message
nova-cloud-controller/0 blocked idle 1/lxd/6 172.17.3.64 8774/tcp,8775/tcp Missing relations: memcache
  nova-cloud-controller-hacluster/2 active idle 172.17.3.64 Unit is ready and clustered
  nova-mysql-router/2 active idle 172.17.3.64 Unit is ready
nova-cloud-controller/1* blocked idle 2/lxd/5 172.17.3.73 8774/tcp,8775/tcp Missing relations: memcache
  nova-cloud-controller-hacluster/1 active idle 172.17.3.73 Unit is ready and clustered
  nova-mysql-router/1 active idle 172.17.3.73 Unit is ready
nova-cloud-controller/2 blocked idle 3/lxd/4 172.17.3.42 8774/tcp,8775/tcp Missing relations: memcache
  nova-cloud-controller-hacluster/0* active idle 172.17.3.42 Unit is ready and clustered
  nova-mysql-router/0* active idle 172.17.3.42 Unit is ready

[Alex Kavanagh (ajkavanagh)]

The memcached unit and relation is only needed if nova-cloud-controller is in HA (i.e. more than one unit). The openstack-base bundles only have one nova-cloud-controller unit and so don't need the memcached unit. The one bundle in the openstack-bundles repository that does to HA is "development/openstack-ha/masakari-mosci.yaml" which uses 3 nova-cc units and memcached.

So, looking at the status output, macchese, I see multiple units of nova-cc. I'm guessing that you added units? Or I'm misunderstanding where the bundle came from. Thanks.

Please re-open the bug if I've closed it in error and you think there is still a problem.