[Pkg-nagios-devel] Bug#717229: Bug#717229: Bug#717229: nagios-plugins-basic: check_ssh returns warning state incorrectly

[Alexander Wirt]

Kiko Piris schrieb am Thursday, den 18. July 2013:

> On 18/07/2013 at 13:03 +0200, Jan Wagner wrote:
> 
> > Could you please check if the following is working for you:
> > command_line	/usr/lib/nagios/plugins/check_ssh '$ARG1$' '$HOSTADDRESS$'
> 
> No, it doesn’t.
> 
> In /etc/nagios3/conf.d/jabato.cfg, I have this:
> 
> | define service {
> |         hostgroup_name                  ssh-servers
> |         service_description             SSH
> |         check_command                   check_ssh
> |         use                             generic-service
> |         notification_interval           0 ; set > 0 if you want to be renotified
> | }
> 
> So, as $ARG1$ is empty: this results in nagios executing this command:
> 
> $ /usr/lib/nagios/plugins/check_ssh '' 10.1.1.202
> 
> The “original” /etc/nagios-plugins/config/ssh.cfg results in nagios
> executing this other command:
> 
> $ /usr/lib/nagios/plugins/check_ssh 10.1.1.202 ''
> 
> 
> Both commands output the same, check_ssh usage string:
> 
> | Usage:
> | check_ssh [-46] [-t <timeout>] [-r <remote version>] [-p <port>] <host>
> 
> 
> check_ssh doesn’t like that extra empty argument (neither if it’s first
> place nor if it’s second).
> 
> And that check_ssh output makes nagios believe the service status is warning.
No, the output never gets interpreted. Just the return code. Illegal
arguments lead to a return code of 3 on my testsystem:
# /usr/lib/nagios/plugins/check_ssh sdfsd
 Usage:
 check_ssh [-46] [-t <timeout>] [-r <remote version>] [-p <port>] <host>
# echo $?                                             :(
3

which should get intereted as "UNKNOWN" [1]

[1] http://nagios.sourceforge.net/docs/3_0/pluginapi.html
-- 
Alexander Wirt, formorer at formorer.de 
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