Kubernetes: Update pod liveness probe timeoutSeconds

Question

i'm working with Kubernetes and Jenkins-x, i need to create a devpod with customized property. In particular i need a timeoutSeconds for the livenessProbe differebt from the default one. I dont know how to customize this attribute before the pod is created so i'm trying to update it once it's running. I tried with

kubectl edit pod/<pod_name>

but it told me i cant update that property.

Do you have suggestions on how i can do this?

Thank you.

Answer 1

Although this may not be something you really want to do in production but you can follow these steps.

1. Get the yaml from the cluster kubectl get pod podname -o yaml --export > pod.yaml

2. Delete the running pod kubectl deplete pod podname

3. Edit the pod.yaml and apply it to the cluster.

Answer 2

You can use kubectl --overrides flag. Something similar to this,

kubectl run busybox --image=busybox --restart=Never --overrides='
      {
         "apiVersion": "v1",
         "kind": "Pod",
         "metadata": {
            "labels": {
               "test": "liveness"
            },
            "name": "liveness-exec"
         },
         "spec": {
            "containers": [
               {
                  "name": "liveness",
                  "image": "k8s.gcr.io/busybox",
                  "livenessProbe": {
                     "exec": {
                        "command": [
                           "cat",
                           "/tmp/healthy"
                        ]
                     },
                     "initialDelaySeconds": 5,
                     "periodSeconds": 5
                  }
               }
            ]
         }
      }
      '