ganeti-listrunner(8)						   Version 2.5.2					      ganeti-listrunner(8)

NAME

       ganeti-listrunner - Run commands in parallel over multiple machines

SYNOPSIS

       ganeti-listrunner -l logdir {-x executable | -c shell-cmd} {-f hostfile | -h hostlist} [-a aux-file] [-b batch-size] [-u username] [-A]

DESCRIPTION

       ganeti-listrunner  is a tool to run commands in parallel over multiple machines. It differs from dsh or other tools in that it asks for the
       password once (if not using ssh-agent) and then reuses the password to connect to all machines, thus being easily usable even  when  public
       key authentication or Kerberos authentication is not available.

       It  can	run  either a command or a script (which gets uploaded first and deleted after execution) on a list of hosts provided either via a
       file (one host per line) or as a comma-separated list on the commandline. The output (stdout and stderr are merged) of the remote execution
       is written to a logfile. One logfile per host is written.

OPTIONS

       The options that can be passed to the program are as follows:

       -l logdir
	      The directory under which the logfiles files should be written.

       -x executable
	      The executable to copy and run on the target hosts.

       -c shell-cmd
	      The shell command to run on the remote hosts.

       -f hostfile
	      The file with the target hosts, one hostname per line.

       -h hostlist
	      Comma-separated list of target hosts.

       -a aux-file
	      A  file to copy to the target hosts. Can be given multiple times, in which case all files will be copied to the temporary directory.
	      The executable or the shell command will be run from the (temporary) directory where these files have been copied.

       -b batch-size
	      The host list will be split into batches of batch-size which will be processed in  parallel.  The  default  if  15,  and	should	be
	      increased if faster processing is needed.

       -u username
	      Username to connect as instead of the default root username.

       -A     Use an existing ssh-agent instead of password authentication.

       --args Arguments to pass to executable (-x).

EXIT STATUS

       The exist status of the command will be zero, unless it was aborted in some way (e.g. ^C).

EXAMPLE

       Run a command on a list of hosts:

	     listrunner -l logdir -c "uname -a" -h host1,host2,host3

       Upload a script, some auxiliary files and run the script:

	     listrunner -l logdir -x runme.sh 
	       -a seed.dat -a golden.dat 
	       -h host1,host2,host3

SEE ALSO

       dsh(1), cssh(1)

REPORTING BUGS

       Report  bugs  to project website (http://code.google.com/p/ganeti/) or contact the developers using the Ganeti mailing list (ganeti@google-
       groups.com).

SEE ALSO

       Ganeti overview and specifications: ganeti(7) (general overview), ganeti-os-interface(7) (guest OS definitions).

       Ganeti commands: gnt-cluster(8) (cluster-wide commands), gnt-job(8)  (job-related  commands),  gnt-node(8)  (node-related  commands),  gnt-
       instance(8)  (instance  commands), gnt-os(8) (guest OS commands), gnt-group(8) (node group commands), gnt-backup(8) (instance import/export
       commands), gnt-debug(8) (debug commands).

       Ganeti daemons: ganeti-watcher(8) (automatic instance restarter), ganeti-cleaner(8) (job queue  cleaner),  ganeti-noded(8)  (node  daemon),
       ganeti-masterd(8) (master daemon), ganeti-rapi(8) (remote API daemon).

       Ganeti  htools:	htools(1)  (generic  binary),  hbal(1)	(cluster balancer), hspace(1) (capacity calculation), hail(1) (IAllocator plugin),
       hscan(1) (data gatherer from remote clusters).

COPYRIGHT

       Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.  Permission is granted to copy, distribute and/or modify under  the  terms	of
       the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
       version.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

Ganeti															      ganeti-listrunner(8)