$ polysh 'machine-<01-14>' waiting (5/14)>
Polysh
Polysh is a tool to aggregate several remote shells into one. It is used to launch an interactive remote shell on many machines at once. It is written in Python and requires Python ≥ 2.4.
Here is the transcript of a sample session:
This prompts means we are still waiting for 5 out of 14 remote shells.
ready (14)>
Now this prompts indicates that our 14 remote shells are ready to accept commands.
ready (14)> date machine-01 : Mon Nov 22 21:26:05 CET 2010 machine-03 : Mon Nov 22 21:26:05 CET 2010 machine-06 : Mon Nov 22 21:26:05 CET 2010 machine-07 : Mon Nov 22 21:26:05 CET 2010 machine-10 : Mon Nov 22 21:26:05 CET 2010 machine-11 : Mon Nov 22 21:26:05 CET 2010 machine-12 : Mon Nov 22 21:26:05 CET 2010 machine-09 : Mon Nov 22 21:26:05 CET 2010 machine-13 : Mon Nov 22 21:26:05 CET 2010 machine-14 : Mon Nov 22 21:26:05 CET 2010 machine-02 : Mon Nov 22 21:26:05 CET 2010 machine-04 : Mon Nov 22 21:26:05 CET 2010 machine-05 : Mon Nov 22 21:26:05 CET 2010 machine-08 : Mon Nov 22 21:26:05 CET 2010 ready (14)>
Perfect time synchronization :-)
ready (14)> sleep 1h
Ctrl-C, Ctrl-D and Ctrl-Z are sent to the remote shells, so if Ctrl-Z is pressed now:
machine-01 : [1]+ Stopped sleep 1h machine-03 : [1]+ Stopped sleep 1h machine-06 : [1]+ Stopped sleep 1h machine-10 : [1]+ Stopped sleep 1h machine-11 : [1]+ Stopped sleep 1h machine-12 : [1]+ Stopped sleep 1h machine-09 : [1]+ Stopped sleep 1h machine-14 : [1]+ Stopped sleep 1h machine-13 : [1]+ Stopped sleep 1h machine-02 : [1]+ Stopped sleep 1h machine-07 : [1]+ Stopped sleep 1h machine-05 : [1]+ Stopped sleep 1h machine-08 : [1]+ Stopped sleep 1h machine-04 : [1]+ Stopped sleep 1h ready (14)> fg machine-01 : sleep 1h machine-06 : sleep 1h machine-07 : sleep 1h machine-10 : sleep 1h machine-12 : sleep 1h machine-13 : sleep 1h machine-14 : sleep 1h machine-02 : sleep 1h machine-03 : sleep 1h machine-04 : sleep 1h machine-05 : sleep 1h machine-08 : sleep 1h machine-09 : sleep 1h machine-11 : sleep 1h
Pressing Ctrl-C will kill all these sleep processes.
Control commands start with a : and are not sent to the remote shells but are interpreted by polysh.
ready (14)> :help :add Add one or many remote shells. :chdir Change the current directory of polysh (not the remote shells). :disable Disable sending commands to remote shells. :enable Enable sending commands to remote shells. :export_vars Export some environment variables on enabled remote shells. :help List control commands or show their documentations. :hide_password Do not echo the next typed line. :list List remote shells and their states. :purge Delete disabled remote shells. :quit Quit polysh. :reconnect Try to reconnect to disconnected remote shells. :rename Rename all enabled remote shells with the argument. :replicate Copy a path from one remote shell to all others :reset_prompt Change the prompt to be recognized by polysh. :send_ctrl Send a control character to remote shells. :set_debug Enable or disable debugging output for remote shells. :set_log Duplicate every console I/O into the given local file. :show_read_buffer Print the data read by remote shells. :upload Upload the specified local path to enabled remote shells.
For example, we can log what we are doing with the :set_log command:
ready (14)> :set_log /tmp/log ready (14)> ls /srv machine-01 : cvs machine-03 : cvs machine-06 : cvs machine-07 : cvs machine-08 : cvs machine-10 : cvs machine-11 : cvs machine-12 : cvs machine-13 : cvs machine-09 : cvs machine-14 : cvs machine-02 : cvs machine-04 : cvs machine-05 : cvs ready (14)> !cat /tmp/log > ls /srv machine-01 : cvs machine-03 : cvs machine-06 : cvs machine-07 : cvs machine-08 : cvs machine-10 : cvs machine-11 : cvs machine-12 : cvs machine-13 : cvs machine-09 : cvs machine-14 : cvs machine-02 : cvs machine-04 : cvs machine-05 : cvs > !cat /tmp/log ready (14)>
Commands prefixed with a ! are executed by a local shell.
Polysh also has some file transfer abilities.
ready (14)> cd /tmp ready (14)> :enable machine-01 ready (1)> dd if=/dev/urandom bs=1M count=10 of=10m.random machine-01 : 10+0 records in machine-01 : 10+0 records out machine-01 : 10485760 bytes (10 MB) copied, 1.59032 s, 6.6 MB/s ready (1)> :enable ready (14)> :replicate machine-01:10m.random machine-14 : 0 B transferred at 0 B/s machine-14 : 1067.00 KiB transferred at 711.12 KiB/s machine-14 : 2.38 MiB transferred at 1146.85 KiB/s machine-14 : 4.26 MiB transferred at 1669.38 KiB/s machine-14 : 6.48 MiB transferred at 2.03 MiB/s machine-14 : 8.73 MiB transferred at 2.17 MiB/s machine-14 : Done transferring 10496000 bytes (10.01 MiB) ready (14)> sha1sum 10m.random machine-01 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-03 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-11 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-06 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-09 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-10 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-13 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-14 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-02 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-07 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-12 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-04 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-05 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random machine-08 : ac8f44beea9ba20ef0954a72cb7b963263660053 10m.random ready (14)>
Download
Polysh is licensed under the terms of the GNU GPL version 2 or (at your option) any later version.
You will need Python ≥ 2.4. The latest version is Polysh 0.4, (NEWS) available here: polysh-0.4.tar.bz2 or polysh-0.4.tar.gz.
RPMS: polysh-0.4-1.src.rpm or polysh-0.4-1.noarch.rpm.
Freecode project page to stay informed: http://freecode.com/projects/polysh.
Git repository hosted on repo.or.cz. To get a snapshot of polysh with a complete history, use the following command:
git clone git://repo.or.cz/polysh.git
