You run linkerd inject deployment.yaml | kubectl apply -f - but get an error about missing permissions. What is the likely cause?

medium📝 Troubleshoot Q6 of 15

Kubernetes - Service Mesh

You run linkerd inject deployment.yaml | kubectl apply -f - but get an error about missing permissions. What is the likely cause?

ADeployment file syntax is invalid

BUser lacks cluster-admin role to inject proxies

CLinkerd CLI is not installed

Dkubectl is not connected to the cluster

Step-by-Step Solution

Solution:

Step 1: Analyze error about permissions
Proxy injection requires permissions to modify pod specs.
Step 2: Identify missing cluster role
Lack of cluster-admin or proper RBAC role causes injection failure.
Final Answer:
User lacks cluster-admin role to inject proxies -> Option B
Quick Check:
Permission error = missing cluster-admin role = A [OK]

Quick Trick: Injection needs cluster-admin or proper RBAC [OK]

Common Mistakes:

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