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Fix tiling issue after initial tiling is completed (T.Mancill)

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Do not use port when using rsh (T.Mancill)
Add usage notes relating to sshd configuration (T.Mancill)
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duncan_ferguson 2005-01-31 09:01:59 +00:00
parent a9b09e45dd
commit da8d781b85
1 changed files with 42 additions and 3 deletions
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45
clusterssh/cssh
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@ -477,8 +477,13 @@ sub open_windows
if(!$options{G})
{
$cur_col = $total % $cols;
$cur_row = ($total - ($total % $cols)) / $cols;
if ($cols > 0) {
$cur_col = $total % $cols;
$cur_row = ($total - ($total % $cols)) / $cols;
} else {
$cur_col = 1;
$cur_row = 1;
}
# we want the first ones to be from 0 not 1, so take 1 off
$cols-=1 if($cols > 0);
@ -558,7 +563,12 @@ sub open_windows
# Start up the terminal ourselves so the pipes are in place
# NOTE - ssh -x to disable forwarding of X11 sessions due to problem
# on redhat systems
system("$user_config{'default.terminal'} $user_config{'default.terminal_options'} $place -title '$method:$serv' -e $^X $user_config{'default.cchp_path'}/cchp $debug -s $user_config{'default.cchp_sleep'} -k $user_config{'default.keep_open'} -x $servers{$serv_name}[2] -y $user_config{'default.tiocsti'} -z $KILLOFF $path_method -p $port $user_config{'default.cx_args'} $serv &") == 0 or warn("Could not create session to $serv: $! ");
my $portarg = "-p $port";
if ($method eq "rsh") {
$portarg = "";
}
system("$user_config{'default.terminal'} $user_config{'default.terminal_options'} $place -title '$method:$serv' -e $^X $user_config{'default.cchp_path'}/cchp $debug -s $user_config{'default.cchp_sleep'} -k $user_config{'default.keep_open'} -x $servers{$serv_name}[2] -y $user_config{'default.tiocsti'} -z $KILLOFF $path_method $portarg $user_config{'default.cx_args'} $serv &") == 0 or warn("Could not create session to $serv: $! ");
if(!sysopen($servers{$serv_name}[3], $servers{$serv_name}[2], O_WRONLY))
{
@ -1117,6 +1127,30 @@ If the code is called as crsh instead of cssh (i.e. a symlink called
crsh points to the cssh file or the file is renamed) rsh is used as the
communcations protocol instead of ssh.
=item *
When using cssh on a large number of systems to connect back to a single
system (e.g. you issue a command to the cluster to scp a file from a given
location) and when these connections require authentication (i.e. you are
going to authenticate with a password), the sshd daemon at that location
may refuse connects after the number specified by MaxStartups in
sshd_config is exceeded. (If this value is not set, it defaults to 10.)
This is expected behavior; sshd uses this mechanism to prevent DoS attacks
from unauthenticated sources. Please tune sshd_config and reload the SSH
daemon, or consider using the ~/.ssh/authorized_keys mechanism for
authentication if you encounter this problem.
=item *
cssh uses quite a number of file descriptors, and doesn't behave very well
(at least on Debian systems when it runs out). If you see errors like:
sh: /usr/X11R6/bin/xterm: Too many open files in system
when trying to open a large number of windows, you'll need to kill
(or CTRL-C) the cssh process and try again with a smaller number of
connections.
=back
=head1 OPTIONS
@ -1485,6 +1519,11 @@ L<Config::Simple>
# Moved to sf.net cvs
#
# $Log$
# Revision 2.34 2005/01/31 09:01:59 duncan_ferguson
# Fix tiling issue after initial tiling is completed (T.Mancill)
# Do not use port when using rsh (T.Mancill)
# Add usage notes relating to sshd configuration (T.Mancill)
#
# Revision 2.33 2005/01/26 14:25:07 duncan_ferguson
# Added -u option to dump out configuration
# Moved TIOCSTI settings to config file option