HA required memcached can't install on focal

[Michael Quiniola]

I was deploying additional nova-cloud-controller units for HA with hacluster related and received this error in juju show-status nova-cloud-controller:

App Version Status Scale Charm Store Rev OS Notes
ha-nova active 3 hacluster jujucharms 77 ubuntu
nova-cloud-controller 23.0.1 blocked 3 nova-cloud-controller jujucharms 357 ubuntu
nova-mysql-router 8.0.26 active 3 mysql-router jujucharms 8 ubuntu

Unit Workload Agent Machine Public address Ports Message
nova-cloud-controller/0* blocked idle 0/lxd/4 10.0.3.45 8774/tcp,8775/tcp Missing relations: memcache
  ha-nova/0* active idle 10.0.3.45 Unit is ready and clustered
  nova-mysql-router/0* active idle 10.0.3.45 Unit is ready
nova-cloud-controller/1 blocked idle 20/lxd/2 10.0.3.144 8774/tcp,8775/tcp Missing relations: memcache
  ha-nova/1 active idle 10.0.3.144 Unit is ready and clustered
  nova-mysql-router/1 active idle 10.0.3.144 Unit is ready
nova-cloud-controller/2 blocked idle 33/lxd/0 10.0.3.145 8774/tcp,8775/tcp Missing relations: memcache
  ha-nova/2 active idle 10.0.3.145 Unit is ready and clustered
  nova-mysql-router/2 active idle 10.0.3.145 Unit is ready

When I go to deploy memcached I receive:

E: The repository 'http://ppa.launchpad.net/niedbalski/memcached-repcached/ubuntu focal Release' does not have a Release file.

in the logs

I tried workaround this by deploying memcached into bionic containers instead and I got the same error.

I then attempted to go grab a memcached charm, but this was not mentioned in the charm deployment guide NOR the nova-cloud-controller README in the charm store

I had run into this problem before and it drove me bonkers. Recommend updating the guides to mention a memcached requirement for HA

[Peter Matulis (petermatulis)]

This is a documentation bug.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-deployment-guide/+/825417

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Peter Matulis <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/charm-deployment-guide/+/825417
Reason: The changed file has been moved to another project. Will create a new PR.

[Peter Matulis (petermatulis)]

This was fixed here:

https://review.opendev.org/c/openstack/charm-guide/+/833472