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[OPERATOR] PodDisruptionBudget is deployed even if ETCD has 1 replicas

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
48/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
kubernetes

Research direction

Start with deploy/etcd/etcd-policy.yaml and inspect how the Operator renders this manifest from etcd.config.replicas. Reproduce the deployment with one replica and confirm the PodDisruptionBudget blocks node draining. Done means the PDB is absent for one replica while its existing behavior remains unchanged for higher replica counts.

Written by the indexing model from the issue text.

Description

  • I have searched the issues of this repository and believe that this is not a duplicate.
Ⅰ. Issue Description

If we deploy Openserverless with etcd.config.replicas: 1, the Operator still deploys the PodDisruptionBudget (nuvolaris-etcd) resource and this prevents node drains.

Ⅱ. Describe what happened

PodDisruptionBudget (nuvolaris-etcd) resource prevents k8s node drains (and a manual change on PDB resource is required to make the drain go ahead)

Ⅲ. Describe what you expected to happen

PodDisruptionBudget (nuvolaris-etcd) should not be deployed if Openserverless is configured with etcd.config.replicas: 1.

Ⅳ. How to reproduce it (as minimally and precisely as possible)
  1. Deploy Openserverless with etcd.config.replicas: 1
  2. Drain a master node

Minimal yet complete reproducer code (or URL to code):

Ⅴ. Anything else we need to know?

The issue is probabily related to this file:
https://github.com/apache/openserverless-operator/blob/main/deploy/etcd/etcd-policy.yaml

Maybe a condition should manage the deployment (or not) of manifest above.

Ⅵ. Environment:
  • K8S Runtime and version: k3s v1.29.3+k3s1
  • OPS CLI version: 0.1.0-2409121919.dev
Dominant language
Python
Stars
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Forks
29
Avg merge
51m
Merged PRs (30d)
14

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