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Describe limitation of some unsupported Elasticsearch configurations #933

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Merged
merged 4 commits into from
Mar 27, 2025
Merged

Describe limitation of some unsupported Elasticsearch configurations #933

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Describe limitation of some unsupported Elasticsearch configurations
barkbay Mar 26, 2025
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barkbay Mar 26, 2025
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barkbay Mar 26, 2025
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Merge branch 'main' into backport-eck-8470
barkbay Mar 27, 2025
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14 changes: 14 additions & 0 deletions deploy-manage/deploy/cloud-on-k8s/node-configuration.md
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Expand Up @@ -34,5 +34,19 @@ spec:
node.roles: ["data", "ingest", "ml", "transform"]
```

::::{warning}
ECK parses Elasticsearch configuration and normalizes it to YAML. Consequently, some Elasticsearch configuration schema are impossible to express with ECK and, therefore, must be set using [dynamic cluster settings](/deploy-manage/deploy/self-managed/configure-elasticsearch.md#cluster-setting-types). For example:
```yaml
spec:
nodeSets:
- name: data
# ...
config:
cluster.max_shards_per_node: 1000
cluster.max_shards_per_node.frozen: 1000 # This won't work because cluster.max_shards_per_node is defined as a scalar value on the previous line
# ...
```
::::

For more information on Elasticsearch settings, check [Configuring Elasticsearch](/deploy-manage/deploy/self-managed/configure-elasticsearch.md).

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