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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You could use the check_dns plugin with the –a argument.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Network Operation Center FMC Luxemburg [mailto:NOC@eurofmc.com] <br><b>Sent:</b> Monday, June 28, 2010 10:40 PM<br><b>To:</b> Nagios Users List<br><b>Subject:</b> [Nagios-users] IP and hostname mapping control<o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:13.5pt;font-family:"Arial","sans-serif"'>Hi everybody,<br><br>I'm looking for a way to check out the mapping between a hostname and IP address.<br><br>Example: IP 192.168.0.1 exists and if the hostname foo.mylan.com is not associated with this IP, I would have an alarm.<br><br>Indeed the script below returns no alarm :<br></span><span style='font-size:13.5pt;font-family:"Courier New"'><br>define host {<br> use unix-server<br> host_name foo.mylan.com <br> display_name foo<br> address 192.168.0.1<br> check_command check_http<br>}<br><br>define service {<br> use local-service<br> host_name foo.mylan.com<br> service_description HTTP local<br> check_command check_http<br>}</span><span style='font-size:13.5pt;font-family:"Arial","sans-serif"'><br><br>Any idea?<br><br>Thanks a lot<br><br>François</span><o:p></o:p></p><div><p class=MsoNormal style='margin-left:.5in'>-- <br><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#000094'>Network Operation Center<br> LUXEMBURG </span><o:p></o:p></p></div></div></body></html>