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Elasticsearch cluster on top of Kubernetes made easy.
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Question: Memory requirements #224

Closed naarani closed 5 years ago

naarani commented 6 years ago

What kind of node should support with configuration? some node with 8 giga with 2 CPU each can support this Elasticsearch configuration, or it should start with 16, 32 o more bigger memory requirements?

What is the node memory required and what's to be expected: it can not grow to infinity memory use, so it slow if it should manage too much requests or crash?

thanks

mat1010 commented 6 years ago

There's no clear answer to your questions. It depends on the amount and kind of data that you ingest, query, store.

What for sure can be said: One Elasticsearch instance should not have more than 30GB of heap. Elastic provides a pretty good starting point regarding the sizing: General: https://www.elastic.co/blog/found-sizing-elasticsearch Heap sizing: https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html

I would not start with nodes lower than 4GB of RAM. So 2GB for the heap and the rest for the filesystem cache.

naarani commented 5 years ago

ok, thx