check_dns, check_ssh seem to time out....

nemir nemiria nemir at mindless.com
Mon Jul 5 22:01:50 CEST 2004


Hiya.

I am monitoring two separate data centres,  so I set up one nagios server in each to monitor all the local servers and each other.

I figure that gives me pretty good coverage.   I use gnokii to send sms messages, I don't want to get things doubled up so much.   This works pretty great.

I setup nagios under OpenBSD 3.5 in the first data centre without a hitch.  

Now I am setting up a similar setup in the second data centre, but under fedora core 2 this time.  I got pretty much everything workign great,  except that my check_dns and check_ssh services of the remote nagios server are giving me errors.

When I run them from the command line, they return positive responses.

The entries in checkcommands.cfg look like:

# 'check_ssh' command definition
define command{
        command_name    check_ssh
        command_line    $USER1$/check_ssh -H $HOSTADDRESS$
        }
# 'check_dns' command definition
define command{
        command_name    check_dns
        command_line    $USER1$/check_dns -H www.mydomain.com -s $HOSTADDRESS$
        }
responses from command line checks are as follows:

etc]# ../libexec/check_ssh -H 192.168.141.5
SSH OK - OpenSSH_3.8.1 (protocol 1.99)
etc]# ../libexec/check_dns -H www.mydomain.com -s 192.168.141.5
DNS ok - 0 seconds response time, Address(es) is/are 192.168.141.5

(These are the same when I su - nagios)

I am confused as to how a plugin could work from the command line,  but not from the nagios daemon.

Thanks for your attention

Nemir
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