I recently ran into an error where my cluster would turn red due to exceeding the maximum allocated heap. Once it returned back to below the threshold, I saw that by default, only 512mb was allocated.
name id node.role heap.current heap.percent heap.max
es01 yzkn cdfhilmrstw 400.7mb 78 512mb
Checking my docker stats, I see:
CONTAINER CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O
kibana 0.61% 504 MiB / 1 GiB 49.22% 2.83 GB / 3.9 GB 0 B / 0 B
elasticsearch 0.04% 998.1 MiB / 1 GiB 97.47% 580 MB / 234 MB 10.4 GB / 1.18 GB
I plan on bind mounting my own jvm.options file to /usr/share/Elasticsearch/config/jvm.options.d/ (- ./elasticsearch/config/jvm.options:/usr/share/elasticsearch/config/jvm.options.d/jvm.options in my docker-compose file), but had a quick question on configuring this file.
As of now, my server has 32 GB of RAM, and I saw that the recommended amount is half of your total RAM. I plan to have the following settings in my jvm.options file:
-Xms16g
-Xmx16g
Would this maximize the memory usage on my Elasticsearch container? Are there any other suggested configuration changes?