Hi,
We have an elastic cluster(2.4) with around 18T data (with replica) running on 10 nodes.
Recently we moved 2 of our servers to VM using openstack but started facing issues on both of the VM's intermittently.
Issues:
- Intermittently cpu load becomes high on VM machines.
- Search latency starts increasing
- after few minutes load comes back to normal and node starts behaving fine
- nothing unusual in marvel and elastic logs
Issues are coming only on VM nodes which is also intermittent whereas physical machine nodes are working absolutely fine.
We have also restarted/rebalanced the cluster but still issue persist.
Also, VM's which we are running have better configuration then physical machines with only 1 VM per 1 physical machine.
Anyone faced the same issue or can suggest any pointer.
Thanks,
Madhur