Hi
When using parallel to execute a process on a set of remote hosts, the process
is prompted by ssh ; as this is run as a background task w no attached
terminal, there is no execution of the desired process on any remote host:
parallel: Warning: $SHELL not set. Using /bin/sh
Could not create directory '/ms/dist/optimus/PROJ/prodid/optdsqa/common/.ssh'.
Host key not found from the list of known hosts.
You have no controlling tty. Cannot read confirmation.I get prompted
So what I want is to be able to pass the following ssh options into parallel:
-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null
Parallel complains when seeing these options:
### my $rc = `head -n2 $hostsfile |
/ms/dist/fsf/PROJ/parallel/20120522/parallel -v --nonall -j 1 --sshlogin - -o
StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null
"/ms/dist/ets/PROJ/clean-colo/qa/bin/clean.pl --group optimus"`;
I have modified parallel to include the options, and this works as desired.
sub sshcommand_of_sshlogin {
# 'server' -> ('ssh -S /tmp/parallel-ssh-RANDOM/host-','server')
# 'user@server' -> ('ssh','user@server')
# 'myssh user@server' -> ('myssh','user@server')
# 'myssh -l user server' -> ('myssh -l user','server')
# '/usr/bin/myssh -l user server' -> ('/usr/bin/myssh -l user','server')
# Returns:
# sshcommand - defaults to 'ssh'
# login@host
my $self = shift;
my ($sshcmd, $serverlogin);
if($self->{'string'} =~ /(.+) (\S+)$/) {
# Own ssh command
$sshcmd = $1; $serverlogin = $2;
} else {
# Normal ssh
if($::opt_controlmaster) {
# Use control_path to make ssh faster
my $control_path = $self->control_path_dir()."/ssh-%r@%h:%p";
$sshcmd = "ssh -o StrictHostKeyChecking=no -o
UserKnownHostsFile=/dev/null -S ".$control_path;
$serverlogin = $self->{'string'};
my $master = "ssh -MTS $control_path $serverlogin sleep 1";
if(not $self->{'control_path'}{$control_path}++) {
# Master is not running for this control_path
# Start it
my $pid = fork();
if($pid) {
$Global::sshmaster{$pid}++;
} else {
::debug($master,"\n");
`$master`;
::wait_and_exit(0);
}
}
} else {
$sshcmd = "ssh -o StrictHostKeyChecking=no -o
UserKnownHostsFile=/dev/null "; $serverlogin = $self->{'string'};
}
}
$self->{'sshcommand'} = $sshcmd;
$self->{'serverlogin'} = $serverlogin;
}
I am wondering if parallel can accept these ssh options thus obviating the need
for modifying parallel?
Thanks for any assistance.....
Jay Maracic
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