The script varnish-frontend-restart currently fails as follows in Beta:
root@deployment-cache-text06:~# varnish-frontend-restart
ERROR:etcd.client:Could not discover the etcd hosts from conftool.deployment-prep.eqiad.wmflabs: None of DNS query names exist: _etcd._tcp.conftool.deployment-prep.eqiad.wmflabs., _etcd._tcp.conftool.deployment-prep.eqiad.wmflabs.deployment-prep.eqiad.wmflabs., _etcd._tcp.conftool.deployment-prep.eqiad.wmflabs.deployment-prep.eqiad1.wikimedia.cloud., _etcd._tcp.conftool.deployment-prep.eqiad.wmflabs.eqiad.wmflabs.
/usr/lib/python3/dist-packages/urllib3/connection.py:362: SubjectAltNameWarning: Certificate for deployment-etcd02.deployment-prep.eqiad1.wikimedia.cloud has no `subjectAltName`, falling back to check for a `commonName` for now. This feature is being removed by major browsers and deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 for details.)
SubjectAltNameWarning
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/conftool/drivers/etcd.py", line 114, in _ls
res = self.client.read(key, recursive=recursive)
File "/usr/lib/python3/dist-packages/etcd/client.py", line 597, in read
timeout=timeout)
File "/usr/lib/python3/dist-packages/etcd/client.py", line 907, in wrapper
return self._handle_server_response(response)
File "/usr/lib/python3/dist-packages/etcd/client.py", line 987, in _handle_server_response
etcd.EtcdError.handle(r)
File "/usr/lib/python3/dist-packages/etcd/__init__.py", line 306, in handle
raise exc(msg, payload)
etcd.EtcdKeyNotFound: Key not found : /conftool/v1/poolsAlthough actually depooling the service makes little sense in Beta (the node is not behind LVS), it would be good if the script could Just Work and effectively fall back to systemctl restart varnish-frontend to ensure uniformity of procedure when upgrading Varnish in Beta and in Prod.