ElasticSearch going DOWN

Hi Experts,

When i am trying to send data from quite many filebeat machines, elasticsearch is going down.

Please suggest some solution. Appriciate quick reply.

What is the error message? What is your cluster size and configuration? How many messages are being ingested per second?

After running logstash, when i am trying to run any operation on the index in kibana dashboard, then ES is going down. And the error message is "plugin:elasticsearch@6.4.3 No Living connections "

I have to again start ES again

There are only two indices, which are now 5gb and 924mb.

messages being ingested per second is some thousands(sometimes it some hundreds also).

How can i know the cluster size?