iterate host

iterate host

Usage

stack iterate host [host]... [command] [command=string]

Description

Iterate sequentially over a list of hosts. This is used to run a shell command on the frontend with with '%' wildcard expansion for every host specified.

Arguments

• [host]

  Zero, one or more host names. If no host names are supplied iterate over all hosts except the frontend.

• [command]

  The shell command to be run for each host. The '%' character is used as a wildcard to indicate the hostname. Quoting of the '%' to expand to a literal is accomplished with '%%'.

Parameters

• [command=string]

  Can be used in place of the command argument.

Examples

• stack iterate host compute "scp file %:/tmp/"

  Copies file to the /tmp directory of every compute node

• stack iterate host compute command="scp file %:/tmp/"

  Same as above