Warning

SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.

add-leaf

Description

Add a leaf node to the cluster.

This command must be run from the same host that the Master Aggregator is currently running on.

If --availability-group is specified, memsqlctl will verify via the Master Aggregator that high availability (HA) is enabled. It will then run the query ADD LEAF user:password@host:port [INTO GROUP {1|2}] on the Master Aggregator.

The --password flag is equired and specifies the SingleStore root password. You can use this flag in conjunction with the --user flag to specify a SingleStore user that is different from the root user and the user’s password.

Note that the MEMSQL_PASSWORD environment variable is a safer alternative option for setting the password.

Wrap the password in single quotes (') to avoid having special characters included in the password interpreted by the shell. For example: sdb-admin add-leaf --port 3306 --password '<<fooismypassword'

Usage

Usage:
  memsqlctl add-leaf [flags]

Flags:
      --availability-group int   The availability group to assign the node
  -h, --help                     Help for add-leaf
      --host string              The cluster-addressable hostname for the node
  -p, --password STRING          The database user's password
      --port PORT                The cluster-addressable port for the node (default 3306)
      --user string              The database user (default "root")

Global Flags:
  -c, --config FILE_PATH                     Path to the memsqctl config file
      --default-install-dir DIRECTORY_PATH   Path to the default install directory
      --insecure-ssl                         Fall back to insecure SSL connections to local nodes if memsqlctl is unable to otherwise establish a connection (ADVANCED)
  -j, --json                                 Print output in JSON format
      --node-metadata-file FILE_PATH         Path to the node metadata file
      --parallelism POSITIVE_INTEGER         Maximum amount of operations to be run in parallel
      --ssl-ca FILE_PATH                     The path to the CA certificate file (in PEM format) to authenticate the database certificate
      --timeout duration                     Maximum time for operation to complete (e.g., 30s, 10m, 1.5h)
      --verbose-json                         Print output in JSON format, include some warnings and user messages
  -v, --verbosity count                      Increase logging verbosity
  -y, --yes                                  Enable non-interactive mode and assume the user would like to move forward with the proposed actions by default

Remarks

This command is interactive unless you use either --yes or --json flag to override interactive behavior.
The memsqlctl add-leaf command is equivalent to the sdb-admin add-leaf command.

Output

The following is the standard output for the add-leaf command.

Shell

sudo memsqlctl add-leaf --host "172.17.0.8"

memsqlctl will perform the following actions on the local master aggregator on port 3306:
  · Run `ADD LEAF root:@172.17.0.8:3306 INTO GROUP 1`

Would you like to continue? [y/N]: y
✓ Added leaf 172.17.0.8:3306 to cluster