For when you feel like you need eight arms to manage your servers
Octosh (Pronounced "awk-tawsh", short for "Octo-shell") is a tool for interacting with multiple hosts simultaneously either in a scripted manner or an interactive manner.
gem install octosh
In scripted usage, you may either inline your script or pass a path to a script, which will then be executed on each host that is specified.
The quickest way to get up and running is using inline scripting. For example…
octosh -b "hostname; date" -r 192.168.0.100,192.168.0.101,192.168.0.102
A few notes, the assumed user here, since none has been specified, is root. If you want to specify a uer per host, the command becomes…
octosh -b "hostname; date" -r user1@192.168.0.100,user2@192.168.0.101,user3@192.168.0.102
or if you want to specify a universal user for all hosts…
octosh -b "hostname; date" -u someuser -r 192.168.0.100,192.168.0.101,192.168.0.102
By default, this will prompt for a password for each host. You can also indicate that the password is uniform cross all hosts, in which case the command becomes…
octosh -b "hostname; date" -u someuser -p -r 192.168.0.100,192.168.0.101,192.168.0.102
Instead of inline scripting, you can also pass a path to a script to run on each host, like so…
octosh -s /path/to/script -u someuser -p -r 192.168.0.100,192.168.0.101,192.168.0.102
There's also...
Interactive mode can be activate with the -i flag, for example...
octosh -i -u someuser -p -r 192.168.0.100,192.168.0.101,192.168.0.102
You will be prompted for the password(s), and then be greeted by the Octoshell prompt. From here, you can operate as normal as you would on a single server, but all commands will be ran on all servers, color-coded per server.
There are a few special commands however (IN PROGRESS)…
put PATH-- Upload file at PATH to the CWD on the remote hostsget FILE-- Download FILE to the CWD on the local machine. Files will be stored in the format "FILENAME-HOST.EXT"exit-- Cleanly close the conneciton to all servers and quit OSH
- Public Key Authentication
- Interactive shell with Octosh-specific commands (put, get, read, etc)
- Simple DSL for more complex tasks