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Merge pull request #36740 from Ryado/patch-1

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Adding a note about server_id reuse
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Alexey Milovidov 2022-04-29 05:44:11 +03:00 committed by GitHub
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docs/en/operations/clickhouse-keeper.md
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@ -65,6 +65,9 @@ The main parameters for each `<server>` are:
- `hostname` — Hostname where this server is placed.
- `port` — Port where this server listens for connections.
:::note
In the case of a change in the topology of your ClickHouse Keeper cluster (eg. replacing a server), please make sure to keep the mapping `server_id` to `hostname` consistent and avoid shuffling or reusing an existing `server_id` for different servers (eg. it can happen if your rely on automation scripts to deploy ClickHouse Keeper)
:::
Examples of configuration for quorum with three nodes can be found in [integration tests](https://github.com/ClickHouse/ClickHouse/tree/master/tests/integration) with `test_keeper_` prefix. Example configuration for server #1: