How to Increase max_map_count on LKE nodes?
I'm trying to increase max_map_count on my LKE cluster to deploy Elastic search.
Elastic search requires vm.max_map_count to be at least 262144.
My first question is how to even do this. Can I ssh as root in the Node and update the configuration.
My second question would be what would happens if the node is replaced. Would I have to go back and update this again.
In a ideal world I would like a way to spin up LKE with this configuration.
Elastic search relevant Docs:
https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-virtual-memory.html
Thanks in advance.
1 Reply
✓ Best Answer
Neverminded I was actually able to do this. I just had to read the docs :).
All i needed to do was add this:
securityContext:
privileged: true
command: ['sh', '-c', 'sysctl -w vm.max_map_count=262144']