Unfortunately I don't have enough time to maintain this tool for now, so you should consider it unmaintained. If someone feels a calling to maintain i2cssh, please let me known and I'll transfer ownership.
i2cssh is a csshX (http://code.google.com/p/csshx/) like tool for connecting over ssh to multiple machines. But instead of creating separate windows and having a master window for input, i2cssh uses iterm2 split panes and "Send input to all sessions" (cmd-shift-i) to send commands to all sessions.
When using iTerm2 < 2.9, install i2cssh version 1.16.0:
$ gem install i2cssh -v 1.16.0
Otherwise, just run:
$ gem install i2cssh
Usage: i2cssh [options] [(username@host [username@host] | username@cluster)]
-c, --clusters clus1,clus2 Comma-separated list of clusters specified in ~/.i2csshrc
-m, --machines a,b,c Comma-separated list of hosts
-f, --file FILE Cluster file (one hostname per line)
-t, --tab-split Split servers/clusters into tabs (group arguments)
-T, --tab-split-nogroup Split servers/clusters into tabs (don't group arguments)
-W, --same-window Use existing window for spawning new tabs
-A, --forward-agent Enable SSH agent forwarding
-l, --login LOGIN SSH login name
-e, --environment KEY=VAL Send environment vars (comma-separated list, need to start with LC_)
-r, --rank Send LC_RANK with the host number as environment variable
-F, --fullscreen Make the window fullscreen
-C, --columns COLUMNS Number of columns (rows will be calculated)
-R, --rows ROWS Number of rows (columns will be calculated)
-b, --broadcast Start with broadcast input (DANGEROUS!)
-nb, --nobroadcast Disable broadcast
-p, --profile PROFILE Name of the iTerm2 profile (default: Default)
-2, --iterm2 Use iTerm2 instead of iTerm
-i, --itermname NAME Name of the application to use (default: iTerm)
-s, --sleep SLEEP Number of seconds to sleep between creating SSH sessions
-d, --direction DIRECTION Direction that new sessions are created (default: column)
-X, --extra EXTRA_PARAM Additional ssh parameters (e.g. -Xi=myidentity.pem)
i2cssh will assume you want to connect to a cluster when only one host is given.
For -c and -m options, the format username@cluster or username@host can be used.
The following commands are exactly the same, however, they might serve different purposes:
$ i2cssh -m user1@host1,user2@host2
$ i2cssh user1@host1 user2@host2
You can combine these options and use them multiple times:
$ i2cssh -m user1@host1,user2@host2 -m user3@host3 user4@host4 user5@host5
Using the -l option will override all usernames:
$ i2cssh -l foo user1@host1 user2@host2
This will connect to both host1 and host2 as the user foo
The i2csshrc file is a YAML formatted file that contains the following structure:
---
version: 2
[optional parameters]
clusters:
mycluster:
[optional parameters]
hosts:
- host1
- host2
Optional parameters can be used globally or per cluster and include:
broadcast: (true/false) # Enable/disable broadcast on start
login: <username> # Use this username for login
profile: <iTerm2 profile> # Use this iTerm profile
rank: (true/false) # Enable sending LC_RANK as an environment variable
columns: <cols> # Amount of columns
rows: <rows> # Amount of rows
sleep: <secs> # Seconds to sleep between creating SSH sessions
direction: (column/row) # Direction that new sessions are created (default: column)
itermname: # iTerm app name (default: iTerm)
environment: # Send the following enviroment variables
- LC_FOO: foo
- LC_BAR: bar
iterm2: true # Use iTerm2.app instead of iTerm.app (only available globally)
Note: rows and columns can't be used together.
The following precedence is used:
global options from config < cluster options from config < command line flags
Make sure the config file is valid YAML (e.g. use spaces instead of tabs)
Enable SSH agent forwarding
This option will override all logins passed in to i2cssh. This goes for global config, cluster config or username@host passed on the command line
Allows for passing environment varables to the SSH session. This can be a comma-separated list: -e LC_FOO=foo,LC_BAR=bar
Enable fullscreen on startup
Set the amount of columns. Can't be used in conjunction with -R
Set the amount of columns. Can't be used in conjunction with -C
Enable broadcast on startup. i2cssh will send cmd-shift-i to the window and press the OK button.
Disable broadcast. This setting can be used to disable any broadcast that was set in the config.
Use a specific iTerm profile
Use iTerm2.app instead of iTerm.app
Name of the application to use (default: iTerm). It happens sometimes iTerm isn't called iTerm. Use this parameter to override what app i2cssh interacts with.
Will read nodes from a file. These will be added to any hosts specified on the command line or in the config
Connect to one or more clusters that are specified in the config
Send a LC_RANK environment variable different for each host (from 0 to n)
Connect to the machines a, b and c
Split servers/clusters into tabs, grouping arguments. Tabs are created as follows: hosts after a -m option are put in one tab, each cluster is always in its own tab, all the arguments are in one tab.
Split servers/clusters into tabs, not grouping arguments. Tabs are created as follows: hosts after a -m option are put in one tab, each cluster is always in its own tab, each argument is in its own tab.
Do not create new Window, but spawn new cluster tabs in current (last used) iterm Window
Wait SLEEP seconds between starting each ssh session. This will take decimals as well (0.5 for half a second)
Set extra ssh parameters in the form -Xk=v. For example:
i2cssh -Xi=myidentity.pem
will result in
ssh -i myidentity.pem
Or,
i2cssh -Xp=2222 -XL=8080:localhost:8080
will result in
ssh -p 2222 -L 8080:localhost:8080
- Functional parity with csshX (as far as possible)
- -X support in config file
I know that i2cssh doesn't have all the functionality of csshX, but either let me know what you really need or fork, hack and create a pull request.
- Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
- Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
- Fork the project
- Start a feature/bugfix branch
- Commit and push until you are happy with your contribution
- Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
- Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.
Copyright (c) 2011-2012 Wouter de Bie. See LICENSE.txt for further details.