Elastic-operator: deploying multiple data pods at once

Elastic Orchestration Elastic Cloud on Kubernetes (ECK)
1

Hi guys,

is it possible to let the elastic-operator deploy multiple data nods/pods at once?

We have 24 data nodes being evenly distributed on 3 kubernetes worker. We’d like to deploy multiple at once because otherwise it takes like 70 minutes currently.

Reducing the amount of data nodes isn’t possible, at least in the short term.

It’s not the PDB, so I assume it’s the operator itself that steers that?

2

Hello, I'm not sure to understand your question because only “master" nodes are added/removed one by one. Could you provide more details about what you want to achieve?

3

So when we do config changes / re-deploy or update the operator, it will recreate all pods and that one by one. We have 24 data pods/nodes and that’s taking quite some time.

We’d like to let it deploy multiple ones at once. Whoever controls that.

pods
pods2558×1392 405 KB

You can see the age on the right side where you see that it starts with the last one first and goes up to data-0 which is still todo. So anything older ~1h is still to be deployed/recreated.

The 24 is from the ES SIEM nodeset

4

Did you try to increase maxUnavailable in the changeBudget: Update strategy | Elastic Docs ?

5

That doesn’t seem to work. We have it set to 8 now but it’s still doing one by one. :confused:

6

Predicates that prevent Pods from being recreated are logged by the operator during the upgrade. This should help explain why only one Pod can be deleted at any given time.

7 
{"log.level":"info","@timestamp":"2025-08-28T08:45:56.225Z","log.logger":"elasticsearch-controller","message":"Cannot restart some nodes for upgrade at this time","service.version":"3.1.0+9fc9bb06","service.type":"eck","ecs.version":"1.4.0","iteration":"492","namespace":"siem","es_name":"siem","namespace":"siem","es_name":"siem","failed_predicates":{"if_yellow_only_restart_upgrading_nodes_with_unassigned_replicas":["siem-es-data-0","siem-es-data-1","siem-es-data-10","siem-es-data-2","siem-es-data-3","siem-es-data-4","siem-es-data-5","siem-es-data-6","siem-es-data-7","siem-es-data-8","siem-es-data-9","siem-es-masters-0"]}}

Any chance to relax / change that?