Increase Virtual Memory for Elasticsearch on GKE with cloud build

Elastic Orchestration Elastic Cloud on Kubernetes (ECK)
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I have created multi-node cluster on GKE and I was using this shell script for fixing the virtual memory on nodes Set vm.max_map_count=262144 on the nodes of a GKE cluster #k8s · GitHub. I want it to be executed in my cloud builder but it just returns Permission denied (publickey). on gcloud compute ssh execution. How can I fix it?

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Permission denied (publickey).

Looks like you must install valid SSH keys?

Note that there are other ways to solve this problem: Virtual memory | Elastic Cloud on Kubernetes [2.10] | Elastic.

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thanks for your answer! Well, it was basically trying to ssh with root user, so I added my username before instance name and it worked just fine

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also, for some reason solution with sysctl as InitContainer wasn't working, GKE was saying that it is forbidden to do sysctl

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