"db opened", advice to get to next step?

New deployment, postgres via cloudnative-pg and minio via bitnamilegacy/minio.

The mattermost deployment gets to here:

{"timestamp":"2025-11-02 04:35:41.181 Z","level":"debug","msg":"Initializing telemetry","caller":"app/plugin_api.go:1104","plugin_id":"com.mattermost.calls","origin":"main.(*Plugin).initTelemetry telemetry.go:144"}
{"timestamp":"2025-11-02 04:35:41.182 Z","level":"debug","msg":"activating","caller":"app/plugin_api.go:1104","plugin_id":"com.mattermost.calls","origin":"main.(*Plugin).OnActivate activate.go:57"}
{"timestamp":"2025-11-02 04:35:41.191 Z","level":"debug","msg":"db opened","caller":"app/plugin_api.go:1104","plugin_id":"com.mattermost.calls","origin":"main.(*logger).Debug log.go:100","driver":"postgres","maxIdleConns":"5","maxOpenConns":"30","connMaxLifetime":"1h0m0s","connMaxIdleTime":"5m0s"}

It looks to be exiting with a return value of 2, but it could just be the health probe failing.

I'm out of ideas of what to test next. Ideas?

additional debug info

k describe pod:

    Last State:  Terminated
      Reason:    Error
      Message:   amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.548 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-servicenow-v2.3.4-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.548 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-mscalendar-v1.3.4-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.548 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-calls-v1.9.1-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.548 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-github-v2.4.0-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.551 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-metrics-v0.7.0-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.551 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-msteams-v2.2.1-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.551 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-playbooks-v2.2.0-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.551 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-gitlab-v1.10.0-linux-amd64.tar.gz"}
{"timestamp":"2025-11-02 18:00:57.555 Z","level":"info","msg":"Processing prepackaged plugin","caller":"app/plugin.go:1009","bundle_path":"/mattermost/prepackaged_plugins/mattermost-plugin-playbooks-v1.41.1-linux-amd64.tar.gz"}

      Exit Code:    2

  Warning  Unhealthy  4m15s (x43 over 9m35s)  kubelet            Readiness probe failed: Get "http://172.16.202.4:8065/api/v4/system/ping": dial tcp 172.16.202.4:8065: connect: connection refused

Chart.yaml (requires cloudnative-pg operator to be installed):

dependencies:
- name: mattermost-operator
  version: 1.0.4
  repository: https://helm.mattermost.com
- name: cluster
  version: 0.3.1
  repository: https://cloudnative-pg.github.io/charts
- name: minio
  version: 17.0.21
  repository: oci://registry-1.docker.io/bitnamicharts

values.yaml (i provide my own ingress because i need to use spec.ingressClassName):

mattermost-operator:

  mattermostCR:
    enabled: true
    name: default
    spec:
      ingress:
        enabled: "false"
        host: "mattermost.onpremredacted.net"
      image: harbor.onpremredacted.net/dockerhub/mattermost/mattermost-enterprise-edition
      version: 10.10.1
      replicas: 1
      database:
        external:
          secret: "db-secret"
      fileStore:
        external:
          url: mattermost-minio
          bucket: default
          secret: "fs-secret"

cluster:

  cluster:
    imageName: harbor.onpremredacted.net/ghcr/cloudnative-pg/postgresql:16

minio:

  image:
    repository: bitnamilegacy/minio

  clientImage:
    repository: bitnamilegacy/minio-client

  console:
    image:
      repository: bitnamilegacy/minio-object-browser

Thank you ahead of time. I've put enough time into this that I don't want to switch now to something else. I'm setting things up onprem as a way to communicate with ai agents which I'm currently deep diving. Planning to integrate with n8n etc. I can possibly submit PRs in the future when I have some time, once I get things working. Thank you again.

Start with the pod's last termination state, Exit Code 2, container logs, and the failed readiness probe for /api/v4/system/ping. Then compare Chart.yaml and values.yaml with the mattermost-operator, CloudNativePG cluster, and MinIO configuration shown. Done means identifying the startup failure or probe cause and documenting a reproducible configuration fix.