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Document custom service template behaviour for CHK #1939

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sunsingerus merged 1 commit into from
Mar 9, 2026
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Document custom service template behaviour for CHK #1939

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2 changes: 2 additions & 0 deletions docs/custom_resource_explained.md
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Expand Up @@ -507,6 +507,8 @@ Another example with selectively described replicas. Note - `replicasCount` spec
with additional sections, such as:
1. `generateName`

**Important:** `serviceTemplates[].spec` is not merged with operator defaults; for ClickHouseKeeperInstallation replica host Services (`replicaServiceTemplate`), include `spec.publishNotReadyAddresses: true` when overriding `spec`.

**`generateName`** is used to explicitly specify service name to be created. `generateName` provides the following macro substitutions:
1. `{chi}` - ClickHouseInstallation name
2. `{chiID}` - short hashed ClickHouseInstallation name (BEWARE, this is an experimental feature)
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