Resize instance types on Container Engine cluster

Question

Some of our containers run better with memory above the instance type currently deployed in our Container Engine cluster. Is there a recommended practice to rebuild the con

Answer 1

A different approach would be:

(1) to create a new node-pool to the GKE cluster with vertically scaled machine types ...

$ gcloud container node-pools create pool-n1std2 --zone europe-west1-d --cluster prod-cluster-1 --machine-type  n1-standard-2  --image-type gci --disk-size=250 --num-nodes 3

(2) then, migrate the workloads off the old nodes ...

$ kubectl drain gke-prod-cluster-1-default-pool-f1eabad5-9ml5 --delete-local-data --force

(3) and finally, to delete the old node-pool

$ gcloud container node-pools delete default-pool --cluster=prod-cluster-1

Notes:

• Warning: Step 2 deletes node local volumes like emptyDir !!!
• Step 2 needs to be repeated for each node in the pool
• Instead of draining the nodes, one might configure a proper nodeSelector to schedule the pods onto the new pool. Label to be matched against would be cloud.google.com/gke-nodepool: pool-n1std2