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mirror of https://github.com/taigrr/nats.docs synced 2025-01-18 04:03:23 -08:00
Ivan Kozlovic 4807c12976
Note about SQL and clustering
Should mention that each node in the cluster needs to point to their own tables.

Resolves https://github.com/nats-io/nats-streaming-server/issues/1038
2020-04-23 13:31:36 -06:00

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# Supported Stores
In order to run NATS Streaming Server in clustered mode, you need to specify a persistent store. At this time you have the choice between `FILE` and `SQL`
The NATS Streaming stores server meta information and messages to the storage you configure using the `--store` option.
However, in clustered mode, we use RAFT for leader election. The raft layer uses its own stores which are currently necessarily file based. The location of the RAFT stores defaults to the current directory under a sub-directory named after the cluster ID, or you can configure it using `--cluster_log_path`.
**Important if using a SQL Store:**
- There is still a need for storing RAFT data on the file system.
- Each node in the cluster needs to have its own "database", that is, no two node should share the same tables.