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Add hint to allocate more memory if Elasticsearch crashes #1456

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Add hint to allocate more memory if Elasticsearch crashes #1456

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5a85923
Add tip to allocate more memory if Elasticsearch crashes to elasticse…
alxhu-dev Jun 1, 2024
deb1aee
Merge pull request #1 from alxhu-dev/alxhu-dev-patch-1
alxhu-dev Jun 1, 2024
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17 changes: 17 additions & 0 deletions content/en/admin/elasticsearch.md
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Expand Up @@ -151,6 +151,23 @@ cd live
RAILS_ENV=production bin/tootctl search deploy
```

{{< hint style="info" >}}
Creating Elasticsearch indicies could require more memory than the JVM (Java Virtual Machine) provides. If Elasticsearch crashes while creating indicies, try to allocate more memory.

1. Create and open a file in the directory ```/etc/elasticsearch/jvm.options.d/``` (for example: ```nano /etc/elasticsearch/jvm.options.d/ram.options```)
2. Add following text and edit the allocated memory to your needs. As a rule of thumb, Elasticsearch should use about 25%-50% of your available memory. Do not allocate more memory than available.
```
# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space
# Both values should be the same
-Xms2048m
-Xmx2048m
```
3. Save the file.
4. Restart Elasticsearch using ```systemctl restart elasticsearch```.
5. Retry creating Elasticsearch indicies. If Elasticsearch still crashes, try to set a higher number.
{{< /hint >}}

## Search optimization for other languages
### Chinese search optimization {#chinese-search-optimization}

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