Stop Vertica on a node

In some cases, you need to take down a node to perform maintenance tasks, or upgrade hardware.

In some cases, you need to take down a node to perform maintenance tasks, or upgrade hardware. You can do this with one of the following:

Administration Tools
Command line admintools stop_node

Important

Before removing a node from a cluster, check that the cluster has the minimum number of nodes required to comply with K-safety. If necessary, temporarily lower the database K-safety level.

Administration tools

Run Administration Tools, select Advanced Menu, and click OK.
Select Stop Vertica on Host and click OK.
Choose the host that you want to stop and click OK.
Return to the Main Menu, select View Database Cluster State, and click OK. The host you previously stopped should appear DOWN.
You can now perform maintenance.

See Restart Vertica on a Node for details about restarting Vertica on a node.

Command line

You can use the command line tool stop_node to stop Vertica on one or more nodes. stop_node takes one or more node IP addresses as arguments. For example, the following command stops Vertica on two nodes:

$ admintools -t stop_node -s 192.0.2.1,192.0.2.2