Adding of health checks and helm chart liveness, readiness, and startup probes

[alextreme]

Thema / Theme

Application / devops

Omschrijving / Description

For the Team Bron components:

• Open Zaak
  

• Open Notificaties
  

• Open Objecten
  

• Open Klant
  

The request is to ensure health check endpoints (based on the structure done in Open Formulieren with maykin-common) are available in a standardised manner

This issue entails for the 4 components specified:

• Add the health checks (note don't forget the celery/beat checks!)
• Ensure there are helm chart changes which make use of the health checks for the liveness, readiness and startup probe

Note that the startup probes in combination with data/schemamigrations will be tricky!

Kubernetes Probe Configuration [COMP014.2-probe-config]
Applications MUST implement all three types of probes:

Liveness Probe:

• Determines if container needs to be restarted
• MUST be simple and fast (< 1 second response time)
• Should NOT check dependencies
• Example: Simple HTTP endpoint returning 200 OK if application can accept requests

Readiness Probe:

• Determines if container can receive traffic
• SHOULD check critical dependencies (database, required APIs)
• MAY have longer timeout than liveness probe
• Should transition pod out of service gracefully

Startup Probe:

• For slow-starting applications
• Disables liveness/readiness checks during startup
• Prevents premature container restarts
• Should have generous initial delay and timeout

Toegevoegde waarde / Added value

No response

Aanvullende opmerkingen / Additional context

No response

[Floris272]

For OK it has already been started in maykinmedia/open-klant#422, after this is merged and the charts are updated we will work on the other components.

estimate 3 weeks for the mentioned components (including helm charts).