We are using 5 machines cluster in production for
ElasticSearch. We are facing an issue that initially cluster response is
good but after 15-20 days of starting the services, ES response get
slow down, also indexing process get slow down. To resolve the issue we
have to restart ElasticSearch on couple of nodes.
ES Version: 1.5.2
RAM per node: 30 GB
ES Heap size per node: 12 GB
Disk Space per node: 1 TB
We are indexing 40 millions records in a day of size 30 GB. Indexes are created on daily basis. Replication factor is 2 as of now.
We have to restart the ES after 15-20 days to keep it stable.
It would be great help if anyone could share their suggestions