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THREAD: How to quarantine a Pod in Kubernetes.
This technique helps you with debugging running Pods in production.
The Pod is detached from the Service (no traffic), and you can troubleshoot it live.
Let& #39;s get started!
This technique helps you with debugging running Pods in production.
The Pod is detached from the Service (no traffic), and you can troubleshoot it live.
Let& #39;s get started!
1/6
Imagine you have a Deployment with three replicas.
Each Pod has an πππ=πππππ label.
A Service routes the traffic to your Pods using the selector πππ=πππππ
Imagine you have a Deployment with three replicas.
Each Pod has an πππ=πππππ label.
A Service routes the traffic to your Pods using the selector πππ=πππππ
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If you want to isolate a Pod you can overwrite the existing label with: πππππππ πππππ πππ <πππ-ππππ> πππ=πππππ --πππππ ππππ
Two things happen next:
If you want to isolate a Pod you can overwrite the existing label with: πππππππ πππππ πππ <πππ-ππππ> πππ=πππππ --πππππ ππππ
Two things happen next:
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First, the Service stops routing traffic to the Pod because the Service& #39;s selector doesn& #39;t match the label.
First, the Service stops routing traffic to the Pod because the Service& #39;s selector doesn& #39;t match the label.
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Then, the ReplicaSet notices that there are only two replicas, but you asked for 3.
The ReplicaSet creates a new Pod.
Then, the ReplicaSet notices that there are only two replicas, but you asked for 3.
The ReplicaSet creates a new Pod.
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At this point, you can debug the Pod live without any traffic interfering with it.
You could use a mix of πππππππ ππ‘ππ, πππππππ ππππ-ππππ πππ or πππππππ πππππ to inspect the running process further.
That& #39;s it, only 3 easy steps.
At this point, you can debug the Pod live without any traffic interfering with it.
You could use a mix of πππππππ ππ‘ππ, πππππππ ππππ-ππππ πππ or πππππππ πππππ to inspect the running process further.
That& #39;s it, only 3 easy steps.
6/6
Credit for this technique goes to @pjausovec who originally posted it on Reddit:
https://www.reddit.com/r/kubernetes/comments/gt3uvg/how_to_quarantine_pods/
Do">https://www.reddit.com/r/kuberne... you know any clever technique to debug your Pods in production?
Let me know!
Credit for this technique goes to @pjausovec who originally posted it on Reddit:
https://www.reddit.com/r/kubernetes/comments/gt3uvg/how_to_quarantine_pods/
Do">https://www.reddit.com/r/kuberne... you know any clever technique to debug your Pods in production?
Let me know!
