First answer was correct. It will try DNS and if it can't resolve it, it will use the IP and all will be green. I have many hosts with no DNS entries (such as switches) and they don't fail when they have no DNS entry.<br>
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<div class="gmail_quote">On Wed, Mar 19, 2008 at 4:53 PM, T.J. Yang <<a href="mailto:tj_yang@hotmail.com">tj_yang@hotmail.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>found the manpage.<br><br><a href="http://www.hswn.dk/hobbit/help/manpages/man1/bbtest-net.1.html" target="_blank">http://www.hswn.dk/hobbit/help/manpages/man1/bbtest-net.1.html</a><br><br>but still not sure about ping test. will ping(conn) test will do the same like testing of telnet,http type of services.<br>
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<dl compact>
<dt>--dns=[ip|only|standard]</dt>
<dd>Determines how bbtest-net finds the IP adresses of the hosts to test. By default (the "standard"), bbtest-net does a DNS lookup of the hostname to determine the IP address, unless the host has the "testip" tag, or the DNS lookup fails. <br>
With "--dns=only" bbtest-net will ONLY do the DNS lookup; it it fails, then all services on that host will be reported as being down. <br>With "--dns=ip" bbtest-net will never do a DNS lookup; it will use the IP adresse specified in bb-hosts for the tests. Thus, this setting is equivalent to having the "testip" tag on all hosts. Note that http tests will ignore this setting and still perform a DNS lookup for the hostname given in the URL; see the "bbtest-net tags for HTTP tests" section in <i><a href="http://www.hswn.dk/hobbit/help/manpages/man5/bb-hosts.5.html" target="_blank">bb-hosts</a>(5)</i></dd>
</dl><br><br>T.J. Yang<br><br>
<blockquote>
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From: <a href="mailto:bewhite@fellowes.com" target="_blank">bewhite@fellowes.com</a><br>To: <a href="mailto:hobbit@hswn.dk" target="_blank">hobbit@hswn.dk</a><br>Date: Wed, 19 Mar 2008 15:37:38 -0500<br>Subject: RE: [hobbit] How hobbit server deal with DNS server failure when doing conn test ?
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<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Neither. It tries DNS, then it tries the IP address in the bb-hosts file. If it can ping the IP address it sets the conn dot to green. The only place I have found that reports it could not resolve the name via DNS is in the output I copied into my email.</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> …..Bruce</span></font></p>
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<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </span></font></p>
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<p><b><font face="Tahoma" size="2"><span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</span></font></b><font face="Tahoma" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Josh Luthman [mailto:<a href="mailto:josh@imaginenetworksllc.com" target="_blank">josh@imaginenetworksllc.com</a>] <br>
<b><span style="FONT-WEIGHT: bold">Sent:</span></b> Wednesday, March 19, 2008 10:14 AM<br><b><span style="FONT-WEIGHT: bold">To:</span></b> <a href="mailto:hobbit@hswn.dk" target="_blank">hobbit@hswn.dk</a><br><b><span style="FONT-WEIGHT: bold">Subject:</span></b> Re: [hobbit] How hobbit server deal with DNS server failure when doing conn test ?</span></font></p>
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<p style="MARGIN-BOTTOM: 12pt"><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">So if it can not resolve DNS, is it yellow instead of red?</span></font></p>
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<p><span><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">On 3/19/08, <b><span style="FONT-WEIGHT: bold">White, Bruce</span></b> <<a href="mailto:bewhite@fellowes.com" target="_blank">bewhite@fellowes.com</a>> wrote:</span></font></span></p>
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<p><font face="Arial" color="blue" size="2"><span style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Josh,</span></font></p>
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<p><font face="Arial" color="blue" size="2"><span style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">I think the first statement is true. I have many items monitored by hobbit which are not registered in DNS (I live with a bunch of windows centric team mates and they rely on WINS not DNS. None of these items end up with conn=red, but they are ID'd in the output from bbtest on the hobbit server. Here is that output:</span></font></p>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">DNS statistics:<br># hostnames resolved : 383<br># succesful : 306<br># failed : 77<br># calls to dnsresolve : 414<br>
<br></span></font><font face="Arial" color="blue" size="2"><span style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Notice that I have 77 monitored items which fail the DNS lookup.</span></font></p>
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<p><font face="Arial" color="blue" size="2"><span style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial"> .....Bruce</span></font></p>
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<p style="MARGIN-BOTTOM: 12pt"><b><font face="Tahoma" size="2"><span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</span></font></b><font face="Tahoma" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Josh Luthman [mailto:<a href="mailto:josh@imaginenetworksllc.com" target="_blank">josh@imaginenetworksllc.com</a>] <br>
<b><span style="FONT-WEIGHT: bold">Sent:</span></b> Wednesday, March 19, 2008 8:55 AM<br><b><span style="FONT-WEIGHT: bold">To:</span></b> <a href="mailto:hobbit@hswn.dk" target="_blank">hobbit@hswn.dk</a><br><b><span style="FONT-WEIGHT: bold">Subject:</span></b> Re: [hobbit] How hobbit server deal with DNS server failure when doing conn test ?</span></font></p>
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<p style="MARGIN-BOTTOM: 12pt"><span><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">Pretty confident if the DNS lookup fails it times out and marks the conn red =( If you don't need it to do a DNS lookup simply add testip.</span></font></span></p>
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<p><span><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">On 3/19/08, <b><span style="FONT-WEIGHT: bold">T.J. Yang</span></b> <<a href="mailto:tj_yang@hotmail.com" target="_blank">tj_yang@hotmail.com</a>> wrote:</span></font></span> </p>
<p style="MARGIN-BOTTOM: 12pt"><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">I remember somewhere in the manpages,<br><br>The hobbit server when doing fping conn test, it will try using FQDN and if<br>
not resolvable,<br>it will use the ip address(from bb-hosts) file.<br><br>Is this a correct statement ?<br><br>I will summarize the answer here<br><br><a href="http://en.wikibooks.org/wiki/System_Monitoring_with_Hobbit/Other_Docs/FAQ#How_does_the_conn_test_work_if_the_first_ping_doesn.27t_respond_.3F" target="_blank">http://en.wikibooks.org/wiki/System_Monitoring_with_Hobbit/Other_Docs/FAQ#How_does_the_conn_test_work_if_the_first_ping_doesn.27t_respond_.3F</a><br>
<br><br>tj<br><br><br>To unsubscribe from the hobbit list, send an e-mail to<br><a href="mailto:hobbit-unsubscribe@hswn.dk" target="_blank">hobbit-unsubscribe@hswn.dk</a><br><br></span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"><br><br clear="all"><br>-- <br>Josh Luthman<br>Office: 937-552-2340<br>Direct: 937-552-2343<br>1100 Wayne St<br>Suite 1337<br>Troy, OH 45373<br><br>Those who don't understand UNIX are condemned to reinvent it, poorly.<br>
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