Unable to apply memory lock to deploy elastic 8 on k8s

Elastic Stack Elasticsearch
1

I am running into issues with deploying elastic version 8.7 on kubernetes (k8s)

I am using this docker image for elastic version 8.7

I have enabled bootstrap memory_lock as "true" but I see these error logs in my elastic master statefulset

[1] bootstrap checks failed. You must address the points described in the following [1] lines before starting Elasticsearch.
bootstrap check failure [1] of [1]: memory locking requested for elasticsearch process but memory is not locked

In the first part of the pod log I see

[WARN ][o.e.b.JNANatives         ] [elasticsearch-master-2]These can be adjusted by modifying /etc/security/limits.conf, for example:
	# allow user 'elasticsearch' mlockall
	elasticsearch soft memlock unlimited
	elasticsearch hard memlock unlimited

I am trying to set the ulimit for memory lock via an init container (before elasticsearch master container starts up)

   initContainers:
      - command:
        - sh
        - -c
        - ulimit -l unlimited

But still elasticsearch master is running into this on kubernetes (k8s) issue - it cannot recognize the memory lock

Has anyone encountered this problem and resolved it?

2

Can anyone assist on this?

3

Welcome to our community! :smiley:

Are you using ECK?

5

thanks Mark!

I am not using the operator - I am using the elastic helm chart but I cannot figure out how to set the proper ulimits to allow memory locking

Tried init containers and other solutions

6

Is there to enable memory lock for kubernetes elastic pods running as non-root?

7

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