Comment 5 for bug 1828534

Managed to reproduce it (only on one unit though), this time with debug=true - looks like it is a py2 - py3 issue:

designate/0 active idle 2/lxd/2 10.232.46.209 9001/tcp Unit is ready
  hacluster-designate/0* active idle 10.232.46.209 Unit is ready and clustered
designate/1* blocked idle 3/lxd/1 10.232.46.208 9001/tcp Services not running that should be: designate-producer
  hacluster-designate/1 active idle 10.232.46.208 Unit is ready and clustered

/var/log/designate/designate-producer.log
https://paste.ubuntu.com/p/pMbt2q6KTF/

2019-07-03 23:43:48.226 37919 DEBUG designate.service [-] Starting RPC server on topic 'producer' start /usr/lib/python3/dist-packages/designate/service.py:171
2019-07-03 23:43:48.252 37919 DEBUG designate.coordination [-] Starting partitioner start /usr/lib/python3/dist-packages/designate/coordination.py:213
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service [-] Error starting thread.: TypeError: '<' not supported between instances of 'str' and 'bytes'
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service Traceback (most recent call last):
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service File "/usr/lib/python3/dist-packages/oslo_service/service.py", line 794, in run_service
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service service.start()
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service File "/usr/lib/python3/dist-packages/designate/producer/service.py", line 72, in start
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service self._partitioner.start()
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service File "/usr/lib/python3/dist-packages/designate/coordination.py", line 223, in start
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service self._my_partitions = self._update_partitions()[1]
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service File "/usr/lib/python3/dist-packages/designate/coordination.py", line 200, in _update_partitions
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service members = sorted(list(self._get_members(self._group_id)))
2019-07-03 23:43:48.257 37919 ERROR oslo_service.service TypeError: '<' not supported between instances of 'str' and 'bytes'

systemctl status designate-producer
● designate-producer.service - OpenStack Designate DNSaaS producer
   Loaded: loaded (/lib/systemd/system/designate-producer.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Wed 2019-07-03 23:43:49 UTC; 16h ago
 Main PID: 37919 (code=exited, status=0/SUCCESS)