我想使用 kube.netes API 从 AWS Lambda function 重新启动部署

Question

I have a eks cluster where I have a pod A and I want to deploy a new pod B that is dedicated to be used to restart the deployment of pod A via kube.netes api such that I call an LB service of POD B from lambda in such form it will restart the deployment of pod A,just looking forward on how we can achieve that,It would be really great if anyone can assist on this.

An Approach on how to restart the pod from another pod using kube.netes API

Answer 1

You can check for the client library and use it for restarting the POD.

List of K8s library: https://kube.netes.io/docs/reference/using-api/client-libraries/

If you use python :

from kubernetes import client, config, watch
import json
import requests
import time
logger = logging.getLogger('k8s_events')
logger.setLevel(logging.DEBUG)

# If running inside pod
#config.load_incluster_config()

# If running locally
config.load_kube_config()

v1 = client.CoreV1Api()
v1ext = client.ExtensionsV1beta1Api() 

way to authenticate the with K8s cluster, you can also use the service account to authenticate and further add the method to restart the POD.

If your cluster is exposed or proxy there you can also patch deployment so which will also auto restart the deployment(POD).

curl -k --data '{"spec":{"template":{"metadata":{"annotations":{"kubectl.kubrnetes.io/restartedAt":"'"$(date +%Y-%m-%dT%T%z)"'"}}}}}' -XPATCH   -H "Accept: application/json, */*" -H "Content-Type: application/strategic-merge-patch+json" localhost:8001/apis/extensions/v1beta1/namespaces/default/deployments/<name of deployment> 

Extra :

If you don't want to run API you can also run the kubectl command on the cluster and restat the POD A from POD B.

Ref: https://itnext.io/running-kubectl-commands-from-within-a-pod-b303e8176088