ElasticSearch

Up to: Tech WG, Search

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 3GB and see what happens

/etc/elasticsearch/jvm.options.d/heap.options

-Xms3g
-Xmx3g

Creds havers

• Jonny
• Lina

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• THIS is actually the current docs, the other urls that are EXACTLY THE SAME are no longer maintained - https://www.elastic.co/guide/en/elasticsearch/reference/current/advanced-configuration.html#set-jvm-heap-size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

• Search

History

Threads

• Initial enabling with Jonny and Lina - https://discord.com/channels/1049136631065628772/1052452072806686751/1167287930742652958

Discord

sneakers.the.rat#elasticsearch23-10-27 02:29:48

OK yet again starting thread on getting ElasticSearch running