CODEWITHSUNDEEP
amazon-web-serviceskubernetescluster-computingamazon-eks
alphanumeric
alphanumeric

Reputation: 19359

How to stop AWS EKS Worker Instances

I wonder if that would be possible to temporary stop the worker VM instances so they are not running at night time when I am not working on a cluster development. So far the only way I am aware of to "stop" the instances from running is to delete the cluster itself which I don't want to do. Any suggestions are highly appreciated.

P.S. Edited later

The cluster was created following steps outlined in this guide.

Upvotes: 20

Views: 36380

Answers (5)

vedat
vedat

Reputation: 1309

you could use POD scaler to stop all the Pods...

apiVersion: batch/v1
kind: CronJob
metadata:
  name: scale-down-all-deployments
spec:
  schedule: "0 22 * * *"  # Run every day at 10:00 PM
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: scale-down-container
            image: kubectl
            command: ["sh", "-c", "for ns in $(kubectl get namespaces -o=jsonpath='{.items[*].metadata.name}'); do for dp in $(kubectl get deployments -n $ns -o=jsonpath='{.items[*].metadata.name}'); do kubectl scale --replicas=0 deployment $dp -n $ns; done; done"]
          restartPolicy: OnFailure

Upvotes: -2

jrk
jrk

Reputation: 696

I'm just learning myself but this might help. If you have eksctl installed, you can use it from the command line to scale your cluster. I scale mine down to the min size when I'm not using it:

eksctl get cluster
eksctl get nodegroup --cluster CLUSTERNAME
eksctl scale nodegroup --cluster CLUSTERNAME --name NODEGROUPNAME --nodes NEWSIZE

To completely scale down the nodes to zero use this (max=0 threw errors):

eksctl scale nodegroup --cluster CLUSTERNAME --name NODEGROUPNAME --nodes 0 --nodes-max 1 --nodes-min 0

Upvotes: 19

Fisal Assubaieye
Fisal Assubaieye

Reputation: 346

Go to EC2 instances dashboard of your Node Group and from right panel in bottom click on Auto Scaling Groups then select your group by click on checkbox and click edit button and change Desired, Min & Max capacities to 0

Auto Scaling groups -> Group size

Upvotes: 15

Farrukh Najmi
Farrukh Najmi

Reputation: 5316

Take a look at the kube-downscaler which can be deployed to cluster to scale in and out the deployments based on time of day.

More cost reduction techniques in this blog.

Upvotes: 3

anVzdGFub3RoZXJodW1hbg
anVzdGFub3RoZXJodW1hbg

Reputation: 181

Edit the autoscaling group and set the instances to 0. This will shut down all worker nodes. Now you can use AWS Automation to schedule a repetitive action through automation documents that will be stopping/starting at given periods of time. You can't stop the master nodes as they are managed by AWS.

Upvotes: 6

Related Questions