[Solved] Why does this PDB fail validation?spec: maxUnavailable: 110% selector: matchLabels: app: api — Ans: maxUnavailable cannot exceed 100% | Kubernetes

Kubernetes - Production Best Practices

Why does this PDB fail validation?

spec:
  maxUnavailable: 110%
  selector:
    matchLabels:
      app: api

AmaxUnavailable cannot exceed 100%

Bselector must use matchExpressions instead of matchLabels

CmaxUnavailable must be an integer only

DPDB requires minAvailable instead of maxUnavailable

Step-by-Step Solution

Solution:

Step 1: Check maxUnavailable value
maxUnavailable can be an integer or percentage but cannot exceed 100%.
Step 2: Identify invalid percentage
110% is invalid and causes validation failure.
Final Answer:
maxUnavailable cannot exceed 100% -> Option A
Quick Check:
maxUnavailable max 100% = C [OK]

Quick Trick: maxUnavailable percentage max is 100% [OK]

Common Mistakes:

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Why does this PDB fail validation?