In the unit logs for nova-cloud-controller:
018-03-06 17:24:19 DEBUG juju-log cloud-compute:19: OpenStack release, database, or rabbitmq not ready for Cells V2 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed getaddrinfo juju-875500-icey-12: Name or service not known 2018-03-06 17:24:20 ERROR juju-log cloud-compute:19: Could not obtain SSH host key from juju-875500-icey-12 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed Traceback (most recent call last): 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/cloud-compute-relation-changed", line 1150, in <module> 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed main() 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/cloud-compute-relation-changed", line 1144, in main 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed hooks.execute(sys.argv) 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/charmhelpers/core/hookenv.py", line 800, in execute 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed self._hooks[hook_name]() 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/cloud-compute-relation-changed", line 663, in compute_changed 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed ssh_compute_add(key, rid=rid, unit=unit) 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/nova_cc_utils.py", line 1005, in ssh_compute_add 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed add_known_host(host, unit, user) 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/nova_cc_utils.py", line 955, in add_known_host 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed raise e 2018-03-06 17:24:20 DEBUG cloud-compute-relation-changed subprocess.CalledProcessError: Command '['ssh-keyscan', '-H', '-t', 'rsa', u'juju-875500-icey-12']' returned non-zero exit status 255 2018-03-06 17:24:20 ERROR juju.worker.uniter.operation runhook.go:107 hook "cloud-compute-relation-changed" failed: exit status 1
In the unit logs for nova-cloud- controller:
018-03-06 17:24:19 DEBUG juju-log cloud-compute:19: OpenStack release, database, or rabbitmq not ready for Cells V2 relation- changed getaddrinfo juju-875500- icey-12: Name or service not known relation- changed Traceback (most recent call last): relation- changed File "/var/lib/ juju/agents/ unit-nova- cloud-controlle r-0/charm/ hooks/cloud- compute- relation- changed" , line 1150, in <module> relation- changed main() relation- changed File "/var/lib/ juju/agents/ unit-nova- cloud-controlle r-0/charm/ hooks/cloud- compute- relation- changed" , line 1144, in main relation- changed hooks.execute( sys.argv) relation- changed File "/var/lib/ juju/agents/ unit-nova- cloud-controlle r-0/charm/ hooks/charmhelp ers/core/ hookenv. py", line 800, in execute relation- changed self._hooks[ hook_name] () relation- changed File "/var/lib/ juju/agents/ unit-nova- cloud-controlle r-0/charm/ hooks/cloud- compute- relation- changed" , line 663, in compute_changed relation- changed ssh_compute_ add(key, rid=rid, unit=unit) relation- changed File "/var/lib/ juju/agents/ unit-nova- cloud-controlle r-0/charm/ hooks/nova_ cc_utils. py", line 1005, in ssh_compute_add relation- changed add_known_ host(host, unit, user) relation- changed File "/var/lib/ juju/agents/ unit-nova- cloud-controlle r-0/charm/ hooks/nova_ cc_utils. py", line 955, in add_known_host relation- changed raise e relation- changed subprocess. CalledProcessEr ror: Command '['ssh-keyscan', '-H', '-t', 'rsa', u'juju- 875500- icey-12' ]' returned non-zero exit status 255 uniter. operation runhook.go:107 hook "cloud- compute- relation- changed" failed: exit status 1
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 ERROR juju-log cloud-compute:19: Could not obtain SSH host key from juju-875500-icey-12
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 DEBUG cloud-compute-
2018-03-06 17:24:20 ERROR juju.worker.