ALTER NODE
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.
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While each node in a cluster resides on a specific host, the host itself can be part of multiple networks, both internal and external, and thus can be addressed by multiple hostnames and/or IP addresses.
The ALTER NODE
command can be used to set:
-
An external hostname or IP address with which to address a node.
-
An external port with which to connect to a node.
Syntax
ALTER NODE <host>:<port> SET EXTERNAL_HOST=<external_host>, EXTERNAL_PORT=<external_port>;
Arguments
-
<host>
: The node’s host (hostname or IP address). -
<port>
: The node’s port on the host. -
<external_
: The external host (hostname or IP address) with which to address the node.host> -
<external_
: The external port with which to connect to the node.port>
Remarks
-
If only updating the host,
<port>
and<external_
can be the same value.port> -
If only updating the port,
<host>
and<external_
can be the same value.host> -
The
ALTER NODE
command is used when the secondary cluster connects to the primary cluster during disaster recovery (DR) replication.-
DR connections are made from nodes on the secondary cluster to nodes on the primary cluster.
-
The nodes on the secondary cluster use the external host and external port to make these connections.
-
If the host and/or port are not specified, the host and/or port are used that were initially defined when the leaf node was added to the cluster.
-
-
The SingleStore database user must have the
CLUSTER
privilege to run theALTER NODE
command. -
The
ALTER NODE
command returns an error if the external host (hostname or IP address) and/or port are already in use.
Examples
ALTER NODE '127.0.0.1':3306 SET EXTERNAL_HOST='127.0.0.1', EXTERNAL_PORT=3316;
Query OK, 0 rows affected (7 ms)
Related Topics
Last modified: September 12, 2024