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@googlegroups.com).

SEE ALSO

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

       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-storage(8) (storage  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),
       hinfo(1) (cluster information printer), mon-collector(7) (data collectors interface).

COPYRIGHT

       Copyright  (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 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.