ECK route/traffic handle

Elastic Orchestration Elastic Cloud on Kubernetes (ECK)
1

When I install the ECK operator in my kubernetes cluster it's added a hulk-es-http service. I'd like to know if I send all the requests to https://hulk-es-http:9200 it'll route to the right nodes.

E.g.: 3 master nodes, 2 data/ingest nodes. Will the hulk-es-http route all my queries and indexes to the data nodes? Or do I have to create a hulk-es-data-http only to handle this?

In case that I have also a coordinator node the hulk-es-http will send the client requests to the coordinator and it send to the other nodes?

I was reading the docs and the forum but I'm still with these doubts.

Thanks

2

I believe this page answers your question, but let us know if you still have questions after that. The main services page has more of an overview as well.

3

Thanks for your quickly reply @Anya_Sabo.

Actually I already read theses docs lots of times but I still have the doubt. I'm probably missing some important point. Anyway I'll read again and try to understand better.

4

To make it clear just in case:

  • the default <cluster-name>-es-http services load balances traffic across all nodes
  • you can create your own services if you want to route traffic to specific nodes (eg. coordinator nodes, or data nodes, or non-master nodes)

You can also follow this github issue in which we discuss future plans for improving the default service and/or create other services.

1 Like
5

I got it @sebgl! I think for now the default service would fit to my case.

Just one more thing. Is it better to avoid hits to the master node?
Eg: my Rails application who index and search documents should point to a exclusive data-node-http service to avoid master node hits?

6

Is it better to avoid hits to the master node?

It is better for performance reasons, yes. If your cluster is not under high pressure it may not matter that much.

1 Like
7

Thanks a lot for your explanation @sebgl. You clarified a lot of doubts I had about the service orchestration :+1:

Cheers!