C OLSNODES Command Reference
This appendix describes the syntax and command options for the olsnodes
command.
This appendix contains the following topics:
Using OLSNODES
This section contains topics which relate to using the OLSNODES command.
Overview
The olsnodes
command provides the list of nodes and other information for all nodes participating in the cluster.
You can use this command to quickly check that your cluster is operational, and all nodes are registered as members of the cluster. This command also provides an easy method for obtaining the node numbers.
Operational Notes
Usage Information
This command is used by the Cluster Verification Utility (CLUVFY) to obtain a list of node names when the -n all
option is used.
This command utility is located in the $ORA_CRS_HOME/bin
directory. You can only use this command if the CRS daemon is started.
Privileges and Security
You can run this command as either the root
user, the user that installed Oracle Clusterware, or the user that installed Oracle Database.
Summary of the OLSNODES Command
The olsnodes
command does not use keywords, but accepts one or more options. The available options are described in Table C-1.
Syntax
olsnodes [[-n] [-i] [-s] [-t] [node_name | -l [-p]] | [-c]] [-a] [-g] [-v]
If you issue the olsnodes
command without any command parameters, the command returns a listing of the nodes in the cluster:
[root@node1]# olsnodes
node1
node2
node3
node4
Table C-1 OLSNODES Command Options
Options | Description |
---|---|
-n |
Lists all nodes participating in the cluster and includes the assigned node numbers. |
-i |
Lists all nodes participating in the cluster and includes the Virtual Internet Protocol (VIP) address (or VIP address with the node name) assigned to each node. |
-s |
Displays the status of the node: |
-t |
Displays node type: pinned or unpinned. |
node_name |
Displays information for a particular node. |
-l [-p] |
Lists the local node and includes the private interconnect for the local node. The |
-c |
Displays the name of the cluster. |
-a |
Displays only active nodes in the cluster with no duplicates. |
-g |
Logs cluster verification information with more details. |
-v |
Logs cluster verification information in verbose mode. Use in debug mode and only at the direction of My Oracle Support. |
Examples
Example 1: List the VIP addresses for all nodes currently in the cluster
To list the VIP addresses for each node that is currently a member of the cluster, use the command:
[root@node1]# olsnodes -i node1 168.92.1.1 node2 168.192.2.1 node3 168.192.3.1 node4 168.192.4.1
Example 2: List the node names and node numbers for cluster members
To list the node name and the node number for each node in the cluster, use the command:
[root@node1]# olsnodes -n node1 1 node2 2 node3 3 node4 4
Example 3: Display node roles for cluster members
To list the node roles for each node in the cluster, use the command:
[root@node1]# olsnodes -a node1 Hub node2 Hub node3 node4