You run helm install myapp nginx --set replicaCount=3 but the app still runs with 1 replica. What is the likely cause?

medium📝 Troubleshoot Q14 of 15

Kubernetes - Helm Package Manager

You run helm install myapp nginx --set replicaCount=3 but the app still runs with 1 replica. What is the likely cause?

AYou must specify the namespace with <code>--namespace</code>

BThe chart does not support the <code>replicaCount</code> parameter

CThe <code>--set</code> flag syntax is incorrect

DThe Helm client version is outdated

Step-by-Step Solution

Solution:

Step 1: Check parameter support
Not all charts support all parameters; replicaCount must be defined in the chart's values.
Step 2: Effect of unsupported parameter
If unsupported, setting replicaCount has no effect, so default 1 replica remains.
Final Answer:
The chart does not support the replicaCount parameter -> Option B
Quick Check:
Unsupported param means no effect [OK]

Quick Trick: Check if chart supports your --set keys [OK]

Common Mistakes:

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