RAM overload elasticsearch

[MrGeneration]

This is a frequent question and was already asked this week.

Very high memory usage

I’ve been using Zammad for 3 years now. We have grown from 3 to 5 agents in the meantime, there are about 7000 tickets in the system. I started using Zammad on an all-in-one system with 16GB of RAM. This offered a good performance for the first 2 years. Last year, however, things started to become worse. Elasticsearch started heavily eating up memory. While the system uses about 6GB RAM with everything except Elasticsearch running, as soon as I turn on Elasticsearch, the 16GB RAM are being exh…