Comment 1 for bug 1906624

I found that keystone was using https endpoint configured with the relatioon:

vault:certificates keystone:certificates

While gnocchi was using http endpoint. I have added the relation with vault with:

juju add-relation vault:certificates gnocchi:certificates

and now I am able to complete the ceilometer-upgraade action:

$ juju run-action ceilometer/0 ceilometer-upgrade --wait
unit-ceilometer-0:
  UnitId: ceilometer/0
  id: "32"
  results:
    Stdout: "lxc\n2020-12-03 10:44:14.825 139161 DEBUG ceilometer.cmd.storage [-]
      Upgrading Gnocchi resource types upgrade /usr/lib/python3/dist-packages/ceilometer/cmd/storage.py:42\e[00m\nlxc\nactive\n"
    outcome: success, ceilometer-upgrade completed.
  status: completed
  timing:
    completed: 2020-12-03 10:44:30 +0000 UTC
    enqueued: 2020-12-03 10:44:06 +0000 UTC
    started: 2020-12-03 10:44:06 +0000 UTC