Is postgres-operator supports k3s?

[sskurapati]

Please, answer some short questions which should help us to understand your problem / question better?

• Which image of the operator are you using? registry.opensource.zalan.do/acid/postgres-operator:v1.6.3
• Where do you run it - cloud or metal? Kubernetes or OpenShift? k3s(v1.21.2+k3s1)
• Are you running Postgres Operator in production? no
• Type of issue? question

I am trying to set up a Postgres cluster on k3s environment.

while creating postgres cluster I am getting the following issue:

selecting default time zone ... Etc/UTC
creating configuration files ... ok
running bootstrap script ... Bus error (core dumped)
child process exited with exit code 135
initdb: removing data directory "/home/postgres/pgdata/pgroot/data"
pg_ctl: database system initialization failed
2021-07-05 13:02:27,414 INFO: removing initialize key after failed attempt to bootstrap the cluster
Traceback (most recent call last):
  File "/usr/local/bin/patroni", line 33, in <module>
    sys.exit(load_entry_point('patroni==2.0.2', 'console_scripts', 'patroni')())
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 170, in main
    return patroni_main()
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 138, in patroni_main
    abstract_main(Patroni, schema)
  File "/usr/local/lib/python3.6/dist-packages/patroni/daemon.py", line 100, in abstract_main
    controller.run()
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 108, in run
    super(Patroni, self).run()
  File "/usr/local/lib/python3.6/dist-packages/patroni/daemon.py", line 59, in run
    self._run_cycle()
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 111, in _run_cycle
    logger.info(self.ha.run_cycle())
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1457, in run_cycle
    info = self._run_cycle()
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1351, in _run_cycle
    return self.post_bootstrap()
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1247, in post_bootstrap
    self.cancel_initialization()
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1240, in cancel_initialization
    raise PatroniFatalException('Failed to bootstrap cluster')
patroni.exceptions.PatroniFatalException: 'Failed to bootstrap cluster'
/run/service/patroni: finished with code=1 signal=0

in operator logs I see the following error:

time="2021-07-05T13:05:44Z" level=error msg="failed to create cluster: pod labels error: still failing after 100 retries" cluster-name=default/acid-upgrade-test pkg=cluster worker=1
time="2021-07-05T13:05:44Z" level=error msg="could not create cluster: pod labels error: still failing after 100 retries" cluster-name=default/acid-upgrade-test pkg=controller worker=1

my manifest file:

apiVersion: "acid.zalan.do/v1"
kind: postgresql
metadata:
  name: acid-upgrade-test
  namespace: default
spec:
  teamId: "acid"
  volume:
    size: 1Gi
  numberOfInstances: 2
  users:
    zalando:  # database owner
    - superuser
    - createdb
    foo_user: []  # role for application foo
  databases:
    foo: zalando  # dbname: owner
  preparedDatabases:
    bar: {}
  postgresql:
    version: "12"

[sskurapati]

It is because of huge_pages, addressed in docker-library/postgres#451.