SOLVED: RE: Plugin error: Remote cisco command via SSH notworking

[Don Lewis]

nagiosexchange.org...(.com was force of habit.;))

-DL
On Thu, 2006-11-16 at 11:33 -0500, Donnell Lewis wrote:
> Don't forget you may also want to post this on nagiosexchange.com as
> it's a great resource for Nagios related projects.
> 
> Thx,
> 
> -Don Lewis
> 
> On Thu, 2006-11-16 at 17:13 +0100, Javier Castillo Alcibar wrote:
> > Hello,
> > 
> > I think I solved the problem. Notice this command in my perl script: 
> > "$ENV{'HOME'} = '/var/lib/nagios';"
> >  
> > Nagios process was executing the plugin with HOME env varible set to "/root" ¿?¿?.  This made ssh fails when trying to read $HOME/.ssh/config files.... (root folder is not readable by other users)
> > 
> > Finally, my contribution to nagios world: check_cisco_ping_ssh (ping from cisco routers, using ssh):
> > 
> > #!/usr/bin/perl
> > # Net::SSH de http://www.stupidfool.org/perl/net-ssh/
> > #
> > # Use: usr/local/sbin/check_cisco_ping_ssh <host> <port> <user> <pass> <ip> <warn> <crit>
> > #
> > use strict;
> > 
> > use Net::SSH::Perl;
> > 
> > $ENV{'HOME'} = '/var/lib/nagios';
> >  
> > my $router=$ARGV[0];
> > my $port=$ARGV[1];
> > 
> > my $user=$ARGV[2]; 
> > my $pass=$ARGV[3]; 
> > 
> > my $ip=$ARGV[4]; 
> > 
> > my $warn=$ARGV[5]; 
> > my $crit=$ARGV[6]; 
> > 
> > 
> > 
> > my $sesion_ssh = Net::SSH::Perl->new($router, protocol=>1, cipher=>'DES', port=>$port, debug=> 'false'); 
> > $sesion_ssh->login($user, $pass);
> > 
> > my $comand="ping $ip";
> > 
> > my($output, $output_error, $value_exit) = $sesion_ssh->cmd($command);
> > 
> > $output =~ /Success rate is (\d*) (.*)/;
> > 
> > my $rate=$1;
> > 
> > if ( $rate <= $crit ) {
> >         print "PROBLEM: Rate=$rate%\n";
> >         exit 2;
> > }
> > 
> > if ( $rate <= $warn ) {
> >         print "WARNING: Rate=$rate%\n";
> >         exit 1;
> > }
> > 
> > if ( $rate <= 100 ) {
> >         print "OK: Rate=$rate%\n"; 
> >         exit 0;
> > }
> > 
> > exit 3;
> > 
> >  
> > 
> > Enjoy it.
> > Regards
> >  	
> > Javier Castillo Alcíbar (2404)
> > Alhambra Eidos.
> > +34 91 787 23 00 javier.castillo at a-e.es
> >  	
> >  
> > 
> > 
> > 
> > 
> > 
> > -----Mensaje original-----
> > De: Andreas Ericsson [mailto:ae at op5.se] 
> > Enviado el: jueves, 16 de noviembre de 2006 16:59
> > Para: Javier Castillo Alcibar
> > CC: nagios-users at lists.sourceforge.net
> > Asunto: Re: [Nagios-users] Plugin error: Remote cisco command via SSH notworking
> > 
> > Javier Castillo Alcibar wrote:
> > > 
> > > Hello all,
> > >  
> > > I have some cisco routers that can only be managed using SSH. I wrote 
> > > an script, to do remotely some PING's from these routers, integrated 
> > > in nagios.
> > > 
> > > My problem is very strange:
> > > 	- if a execute this script from the command line by myself, it works 
> > > as expected.
> > > 	- if nagios process executes the script, it does not work. It looks 
> > > like ssh process didn't return anything....
> > > 
> > > I think it's a problem related with ttys.....but I'm not sure.
> > > 
> > > This is my (perl) script:
> > > 
> > > #!/usr/bin/perl
> > > #
> > > # Uso: usr/local/sbin/check_cisco_ping_ssh <host> <port> <user> <pass> 
> > > <ip> <warn-rate> <crit-rate> # use Net::SSH::Perl;
> > > 
> > > $router=$ARGV[0];
> > > $port=$ARGV[1];
> > > $user=$ARGV[2];
> > > $pass=$ARGV[3];
> > > $ip=$ARGV[4];
> > > $warn=$ARGV[5];
> > > $crit=$ARGV[6];
> > > 
> > > my $sesion_ssh = Net::SSH::Perl->new($router, protocol=>1, 
> > > cipher=>'DES', port=>$port); $sesion_ssh->login($user, $pass);
> > > 
> > > $command="ping $ip";
> > > 
> > > my($output, $output_error, $val_exit) = $sesion_ssh->cmd($command);
> > > 
> > > $output =~ /Success rate is (\d*) (.*)/; $rate=$1;
> > > 
> > > if ( $rate <= $crit ) {
> > >         print "PROBLEM: PING Rate=$rate%\n";
> > >         exit 2;
> > > }
> > > if ( $rate <= $warn ) {
> > >         print "WARNING: PING Rate=$rate%\n";
> > >         exit 1;
> > > }
> > > if ( $rate <= 100 ) {
> > >         print "OK: PING Rate=$rate%\n"; 
> > >         exit 0;
> > > }
> > > exit 3;
> > > 
> > > 
> > > Any help is welcome!!.
> > > 
> > 
> > Have you compiled nagios with embedded perl support? If so, use /usr/bin/perl /path/to/your/script.pl
> > 
> > instead of just
> > 
> > /path/to/your/script.pl
> > 
> > in the command definition.
> > 
> > Other than that, make sure that the nagios-user has access to execute the script and try it from the command-line *as the nagios user*. If that works, you've made some mistake in your configuration.
> > 
> > -- 
> > Andreas Ericsson                   andreas.ericsson at op5.se
> > OP5 AB                             www.op5.se
> > Tel: +46 8-230225                  Fax: +46 8-230231
> >  
> > --------------------------------------------------------
> > Alhambra-Eidos ha cambiado su dominio de correo electrónico. Por favor revise sus contactos, y proceda a actualizar nuestras direcciones a @a-e.es. 
> > 
> > 
> >  
> > Muchas gracias.
> > Alhambra-Eidos. We solve IT, we solve it
> > --------------------------------------------------------
> > 
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