additionalConfig doesnt seem to work [atleast for me]

[vitarkah]

Additional config looks like this
rabbitmq: additionalConfig: | channel_max = 1050 loopback_users.guest = true cluster_partition_handling = pause_minority vm_memory_high_watermark_paging_ratio = 0.99 disk_free_limit.relative = 1.0 collect_statistics_interval = 10000

and this is what I see in see
rabbitmq@rabbitmq-cluster-server-0:/$ cat /etc/rabbitmq/conf.d/90-userDefinedConfiguration.conf total_memory_available_override_value = 1717986919 channel_max = 1050 loopback_users.guest = true cluster_partition_handling = pause_minority vm_memory_high_watermark_paging_ratio = 0.99 disk_free_limit.relative = 1.0 collect_statistics_interval = 10000

But getting this
PLAIN login refused: user 'guest' - invalid credentials

What am i missing?

[ChunyiLyu]

@vitarkah Are you trying to set credentials for the default user?

For user management in RMQ in k8s, we generally recommend using the Messaging Topology Operator and create users.rabbitmq.com objects: https://github.com/rabbitmq/messaging-topology-operator/blob/main/docs/examples/users/userPreDefinedCreds.yaml

You can also import definitions if that fits your use case: https://github.com/rabbitmq/cluster-operator/tree/main/docs/examples/import-https-url-definition

If you have to set credentials for the default user, you can create a default user secret first with the expected username and password before you create the rabbitmqcluster. For example, if your rabbitmqcluster name is sample, you can create a secret, in the same namespace called sample-default-user:

apiVersion: v1
kind: Secret
metadata:
  name: sample-default-user
type: Opaque
stringData:
  username: guest-user
  password: guest-pass
  default_user.conf: |
    default_user = guest-user
    default_pass = guest-pass

Then you can create the rabbitmqcluster. There is no need to set the username&password in the rmq manifest with this approach.