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We're using Nagios to monitor our site (and a bunch of other stuff.) For some odd reason, when I test out the command

/usr/lib/nagios/plugins/check_http -H 'domainname.com'

the response that comes back is HTTP/1.1 200 OK but when I set up the service to do it:

# Check that domain is running
define service {
    hostgroup_name                  hostgroup
    service_description             host site
    check_command                   check_httpname!domainname.com
    use                             generic-service
    notification_interval           1; set > 0 if you want to be renotified
}

the response that comes back is HTTP/1.1 503 Service Unavailable.

Does anyone know why this would be happening?

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Can you post the command definition of check_httpname? –  EEAA Jun 11 '10 at 19:35
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1 Answer

up vote 1 down vote accepted

Not sure why I can't add a comment but can you might want to verify your address and host_name in the host definition. I've been stuck in situations where the command line check script works but the GUI is telling me something else. Usually it's a typo in the address field.

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Might be a typo in the check_httpname command definition in command.cfg too, per ErikA's question above. –  gareth_bowles Jun 11 '10 at 23:54
    
It was in fact the host_name and address. I was trying to get localhost to use a different hostname. Just went through and added a new host and therefore a new host_name. Thanks! –  Michael T. Smith Jun 14 '10 at 18:19
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