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knife-ssh(1) -- Run a command or interactive session on multiple remote hosts
========================================
## SYNOPSIS
__knife__ __ssh QUERY COMMAND__ _(options)_
* `-a`, `--attribute ATTR `:
The attribute to use for opening the connection - default is fqdn
* `-C`, `--concurrency NUM `:
The number of concurrent connections
* `-m`, `--manual-list `:
QUERY is a space separated list of servers
* `-P`, `--ssh-password PASSWORD`:
The ssh password
* `-x`, `--ssh-user USERNAME `:
The ssh username
* `-i`, `--identity-file IDENTITY_FILE`:
The SSH identity file used for authentication
* `-p`, `--ssh-port PORT`:
The ssh port
* `--[no-]host-key-verify`:
Verify host key, enabled by default.
## DESCRIPTION
The _ssh_ sub-command opens an ssh session to each of the nodes in the
search results of the _QUERY_. This sub-command requires that the
net-ssh-multi and highline Ruby libraries are installed. On Debian
systems, these are the libnet-ssh-multi-ruby and libhighline-ruby
packages. They can also be installed as RubyGems (net-ssh-multi and
highline, respectively).
## TERMINAL MULTIPLEXING AND TERMINAL TAB SUPPORT
`knife ssh` integrates with several terminal multiplexer programs to
provide a more convenient means of managing multiple ssh sessions. When
the _COMMAND_ option matches one of these, `knife ssh` will create
multiple interactive ssh sessions running locally in the terminal
multiplexer instead of invoking the command on the remote host.
The available multiplexers are:
* `interactive`:
A built-in multiplexer. `interactive` supports running commands on a
subset of the connected hosts in parallel
* __screen__(1):
Runs ssh interactively inside `screen`. ~/.screenrc will be sourced
if it exists.
* __tmux__(1):
Runs ssh interactively inside tmux.
* `macterm` (Mac OS X only):
Opens a Terminal.app window and creates a tab for each ssh session.
You must install the rb-appscript gem before you can use this
option.
## SEE ALSO
__knife-search__(1)
## AUTHOR
Chef was written by Adam Jacob <adam@opscode.com> with many contributions from the community.
## DOCUMENTATION
This manual page was written by Joshua Timberman <joshua@opscode.com>.
Permission is granted to copy, distribute and / or modify this document under the terms of the Apache 2.0 License.
## CHEF
Knife is distributed with Chef. <http://wiki.opscode.com/display/chef/Home>
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