Problems with check_ssh

[Marc Powell]

> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Steven Schwartz
> Sent: Tuesday, February 19, 2008 3:01 PM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Problems with check_ssh
> 
> I'm trying to use check_ssh as a substitute for check_ping, for
machines
> on the other side of a no-ping firewall.
> 
> 
> 
> When I run the check by hand, I get:
> 
> 
> 
> ../libexec/check_ssh -t 20 -H <machine-name>
> 
> SSH OK - Sun_SSH_1.1 (protocol 2.0)

Tested as the nagios user?

> My checkcommands.cfg entry:
> 
> 
> 
> # 'check_ssh' command definition
> 
> define command{
> 
>         command_name    check_ssh
> 
>         command_line    $USER1$/check_ssh -4 -t 20 -H $HOSTADDRESS$
> 
>         }


> 
> CRITICAL - Socket timeout after 20 seconds
> 
> 
> 
> Even though from the command line, I can reach it no problem. Any
> suggestions?

Does <machine-name> from the successful test above exactly match the
value of $HOSTADDRESS$? 

Fundamentally, the plugin is just doing a TCP connect to $HOSTADDRESS$
and looking for the version string. It then disconnects. Does 'telnet
$HOSTADDRESS$ 22' return an SSH banner? You'll need to substitute the
value of the 'address' parameter in the host{} definition for
$HOSTADDRESS$ of course.

--
Marc

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