gs_ssh

Background

gs_ssh, provided by openGauss, helps users run the same command on multiple nodes in openGauss.

Precautions

• gs_ssh can only run the command which the OS user omm has permission
• The commands executed by gs_ssh do not affect the current session. For example, the cd or source command affects only the process environment, but does not affect the current session environment.

Prerequisites

• The trust relationship among the hosts is normal.
• openGauss has been correctly installed and deployed.
• The command to be run can be found by the which command, and the current user has the required execution permission.
• Log in to the OS as the OS user omm to run the gs_ssh command.

Syntax

• Run commands synchronously.

  gs_ssh -c cmd
  

• Display help information.

  gs_ssh -? | --help
  

• Display version information.

  gs_ssh -V | --version
  

Parameter Description

• -c

  Specifies the command name of Linux shell on the hosts of openGauss.

• -?, --help

  Displays help information.

• -V, --version

  Displays version information.

Example

Run the same command on each host of openGauss. Take the hostname command as an example.

gs_ssh -c "hostname"
Successfully execute command on all nodes.
Output:
[SUCCESS] plat1:
plat1
[SUCCESS] plat2:
plat2
[SUCCESS] plat3:
plat3
[SUCCESS] plat4:
plat4