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MINOR: Fixed documentation on formatting new brokers #21981

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10 changes: 8 additions & 2 deletions docs/operations/kraft.md
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Expand Up @@ -142,9 +142,15 @@ bin/kafka-storage.sh format --cluster-id ${CLUSTER_ID} \

This command is similar to the standalone version but the snapshot at 00000000000000000000-0000000000.checkpoint will instead contain a VotersRecord that includes information for all of the controllers specified in --initial-controllers. It is important that the value of this flag is the same in all of the controllers with the same cluster id. In the replica description 0@controller-0:1234:3Db5QLSqSZieL3rJBUUegA, 0 is the replica id, 3Db5QLSqSZieL3rJBUUegA is the replica directory id, controller-0 is the replica's host and 1234 is the replica's port.

### Formatting Brokers and New Controllers
### Formatting New Brokers and Controllers

When provisioning new broker and controller nodes that we want to add to an existing Kafka cluster, use the `kafka-storage.sh format` command with the --no-initial-controllers flag.
When provisioning new broker nodes that we want to add to an existing Kafka cluster, use the `kafka-storage.sh format` command with no additional flags.

```bash
$ bin/kafka-storage.sh format --cluster-id <CLUSTER_ID> --config config/server.properties
```

When provisioning new controller nodes that we want to add to an existing Kafka cluster, use the `kafka-storage.sh format` command with the --no-initial-controllers flag.

```bash
$ bin/kafka-storage.sh format --cluster-id <CLUSTER_ID> --config config/server.properties --no-initial-controllers
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