DNS resolution
list Kent Brodie
Hi- by the way, my cluster stuff is finally working the way I want. Thanks for putting up with my ignorance on how the hobbitd and bbproxy stuff co-exist (or don't)! In my bbtests column of my main server, I see: DNS statistics: # hostnames resolved : 141 # succesful : 136 # failed : 5 # calls to dnsresolve : 183 .... any idea what's the easiest way for me to discern "which" of my 183 hosts are failing DNS resolution? So far, very very cool. I'm using hobbit to monitor just boatloads of stuff. Kent C. Brodie - user-da7f7d5174c0@xymon.invalid Department of Physiology Medical College of Wisconsin (XXX) XXX-XXXX
list Henrik Størner
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On Mon, Jul 24, 2006 at 03:35:47PM -0500, Brodie, Kent wrote:
Hi- by the way, my cluster stuff is finally working the way I want. Thanks for putting up with my ignorance on how the hobbitd and bbproxy stuff co-exist (or don't)! In my bbtests column of my main server, I see: DNS statistics: # hostnames resolved : 141 # succesful : 136 # failed : 5 # calls to dnsresolve : 183 .... any idea what's the easiest way for me to discern "which" of my 183 hosts are failing DNS resolution?
The only way currently is to run bbtest-net with the --debug option, and grep the output for "DNS lookup failed". I've been asked before, so I really should add some way of easily finding this information, or at least provide a way of logging it. BTW, you don't have 183 hostnames - you have 141. The 183 is the number of times a hostname lookup was done, so some of them was via the cache that bbtest-net has. This is because the same hostname may be needed for multiple tests, e.g. if you use it in http url's that you test. Regards, Henrik
list Kent Brodie
Aha! Ok, thanks. I made the mistake of running that manually, and it kind of short circuited every CONN test out there on the running server. Oops. More pager batteries........................
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Kent C. Brodie - user-da7f7d5174c0@xymon.invalid
Department of Physiology
Medical College of Wisconsin
(XXX) XXX-XXXX
-----Original Message-----
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From: Henrik Stoerner [mailto:user-ce4a2c883f75@xymon.invalid]
Sent: Monday, July 24, 2006 3:56 PM
To: user-ae9b8668bcde@xymon.invalid
Subject: Re: [hobbit] DNS resolution
On Mon, Jul 24, 2006 at 03:35:47PM -0500, Brodie, Kent wrote:Hi- by the way, my cluster stuff is finally working the way I want. Thanks for putting up with my ignorance on how the hobbitd and bbproxy stuff co-exist (or don't)! In my bbtests column of my main server, I see: DNS statistics: # hostnames resolved : 141 # succesful : 136 # failed : 5 # calls to dnsresolve : 183 .... any idea what's the easiest way for me to discern "which" of my
183
hosts are failing DNS resolution?
The only way currently is to run bbtest-net with the --debug option, and grep the output for "DNS lookup failed". I've been asked before, so I really should add some way of easily finding this information, or at least provide a way of logging it. BTW, you don't have 183 hostnames - you have 141. The 183 is the number of times a hostname lookup was done, so some of them was via the cache that bbtest-net has. This is because the same hostname may be needed for multiple tests, e.g. if you use it in http url's that you test. Regards, Henrik