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Thread: named at the top of top?
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09-19-2006, 11:56 AM #1WHT Addict
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named at the top of top?
Everytime my server slows down I logged in to SSH and after a top command I am always seeing the "named" at the top of the list why?
Thank you,
Leo
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09-19-2006, 12:19 PM #2Junior Guru Wannabe
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Does it stay there? What sort of processor utilization are we talking about?
Cory von Wallenstein, Dynamic Network Services Inc.
My team and I spent the last few months putting together the DynDNS Spring Server VPS platform for folks needing IPv4 and IPv6 Linux servers on Xen. Would love feedback, both good and bad!
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09-19-2006, 08:32 PM #3WHT Addict
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Yes, it is always there... Dual Xeon 3.0 GHz with 2GB Ram
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09-20-2006, 12:49 AM #4Web Hosting Master
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Who owns this process, are you sure it is not an exploit running as the webserver (if no phpsuexec) user ?
John W, CISSP, C|EH
MS Information Security and Assurance
ITEagleEye.com - Server Administration and Security
Yawig.com - Managed VPS and Dedicated Servers with VIP Service
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09-20-2006, 12:57 AM #5Web Hosting Evangelist
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I think named is bind.
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09-20-2006, 02:21 AM #6Web Hosting Master
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Do you have recursion turned off for named?
running netstat -n |grep 53 shows how many established connections?
Tail -f /var/log/messages and watch for any strange connections via port 53 or any IP's that might be hammering the system.
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09-20-2006, 09:19 AM #7WHT Addict
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Yes, i found below about port #53
Sep 20 09:14:10 myhostname named[1475]: lame server resolving 'auser.net' (in 'auser.NET'?): myip#53
What is this lame server thing?
Thanks,
Leo
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09-20-2006, 10:37 AM #8Web Hosting Master
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What is this lame server thing?
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09-20-2006, 11:01 AM #9WHT Addict
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So what causes the CPU so high? When nobody on the server I mean nobody is browsing a site, named is at the top and using too much resources?
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09-20-2006, 02:32 PM #10Web Hosting Master
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When nobody on the server I mean nobody is browsing a site, named is at the top and using too much resources?
And about the top process, if you use "Top" command and named process comes at the top of the process list that doesn't mean it is taking the high resources. Top is a real time command, it updates in every second according to the top command configuration. But if the process comes in top that means when top tried to process the working reqested links, he find named process at first. Check other options of the named process on the top resulted command. you can get different informations of it, whether how much cpu load it is taking and memory usage etc etc.
And these will define whether it is the top process or not
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