Managing Nodes in an On-Premises Cluster
This section describes how to use ucs-ctl to manage nodes in an on-premises.
ucs-ctl is a command-line tool for managing UCS on-premises clusters. For details about ucs-ctl, see Using ucs-ctl to Manage On-Premises Clusters.
Adding a Node to an On-Premises Cluster
- Run the ./ucs-ctl config generator -t node -o node.csv command on the executor to generate the configuration file used for managing nodes.
- Write the parameters of the required node to the configuration file and use commas (,) to separate the parameters. Table 1 describes the parameters.
Table 1 Parameters in the configuration file Parameter
Description
Node IP
Node IP
User
Username for SSH connection
Password
Password for SSH connection
Example:
Node IP,User,Password 123.45.6.789,root,******** 123.45.6.890,root,********
- Run the ./ucs-ctl create node -c [Cluster name] -m node.csv command on the executor to manage the node.
The node.csv file contains keys. Keep the file secure.
Deleting a Node from an On-Premises Cluster
- Method 1:
Run the following command on the executor:
./ucs-ctl delete node -c [Cluster name] -n [node ip1],[node ip2],...
-n specifies IP addresses. Use commas (,) to separate the IP addresses.
- Method 2:
Run the following command on the executor:
./ucs-ctl delete node -c [Cluster name] -m node.csv
-m specifies the configuration file used for managing nodes. You can delete all nodes at a time.
If nodes fail to be deleted from an on-premises cluster, perform operations in How Do I Manually Clear Nodes of an On-premises Cluster?
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