Load balancer for elasticsearch cluster

Elastic Stack Elasticsearch
1
  • Elasticsearch version - 5.1.2
  • 16GB of max heap configured
  • Installed and used enterprise modules, if any - No
  • JVM version and operating system version - openjdk version "1.8.0_292" , CentOS
  • Other installed Elasticsearch or Kibana plugins, if any - None
    Configuration: Google Loadbalancer -> 3 Instances -> 3 data and master nodes (master and data on same instances)

Hi, my setup right now has 3 instances with both data and master on each of them.
I use Google internal load balancer "before" instance group of this instances.
Recently I have configured a NewRelic monitoring for this cluster and I have seen this picture

Screen Shot 2021-08-05 at 22.09.09
Screen Shot 2021-08-05 at 22.09.091818×610 69.4 KB

The interesting part is Open http connections and READ IO Operations that it shows on es-node-1.

I wonder what would be a best practice or a suggestion having this configuration and what is the best way for connecting an application to cluster? Directly to one of nodes? Using load balancer same way I use it now ? DNS with round robin ? Any other 3rd party LB solution for ES?

2

I guess it depends on how the load balancer is setup to talk to the cluster?

5.X is very much EOL, please upgrade as a matter of urgency.

3

Hi Mark, thanks for reply,
The load balancer is an Internal TCP load balancer Pass-through.
I'm trying to figure out what would be the best way to connect an application to elasticcluster?

4

That depends on the application.
If you are using an official client then it will handle the load balancing etc. Otherwise, HTTP level would make sense.

5

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