ElasticSearch
Config
List any changed config values here!!!
/etc/elasticsearch/elasticsearch.yml:
network.host: localhost discovery.type: single-node xpack.security.enabled: true
/home/mastodon/.env.production
idk if we should put this part online but there is some config here too
Service
Use the default service, except we also make it restart when it dies:
/lib/systemd/system/elasticsearch.service
[Service]
# Other stuff....
ExecStart=/usr/share/elasticsearch/bin/systemd-entrypoint -p ${PID_DIR}/elasticsearch.pid --quiet
Restart=always
RestartSec=30
# ...
Memory
the ES docs say to allocate half your available memory to the heap. At the moment (23-10-26) we are using 2.5G/8G memory at rest. Going to try allocating 2GB and see what happens
Notes:
- Keep getting OOM, so changing to 2GB - jonny, 23-11-25
/etc/elasticsearch/jvm.options.d/heap.options
-Xms2g -Xmx2g
Creds havers
References
Docs:
- https://docs.joinmastodon.org/admin/elasticsearch/
- THIS is actually the current docs, the other urls that are EXACTLY THE SAME are no longer maintained - https://www.elastic.co/guide/en/elasticsearch/reference/current/advanced-configuration.html#set-jvm-heap-size
- https://www.elastic.co/guide/en/elasticsearch/guide/current/hardware.html
- https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html
- https://blog.thms.uk/2023/09/mastodon-elasticsearch
- (pretty old at this point and also ES says not do to the JVM memory size thing) https://github.com/felx/mastodon-documentation/blob/master/Running-Mastodon/Elasticsearch-guide.md
Since we are running on a small VPS, we might need to configure it for a low memory environment!
See also
History
Threads
- Initial enabling with Jonny and Lina - https://discord.com/channels/1049136631065628772/1052452072806686751/1167287930742652958
Discord
OK yet again starting thread on getting ElasticSearch running