Re: dns RR method is not equal balanced?
On Mar 29, 2011, at 10:49 AM, Tony Finch wrote: Kay ch...@daumcorp.com wrote: some domain has 12 IPs but traffic of the server is not equal. The traffic of 11 IPs is same and just 1 IP is higher than others. If you use round-robin DNS you are relying on the clients not to muck around with the responses they get from your DNS server. If they sort them, for example, that will mess up the balancing. For example RFC 3484 screws it up. In theory, if the glsb can be configured to act the way bind does, you could isolate the problem to client behavior. Obviously bind's round-robin behavior could be checked in the lab with a test name. Seems unlikely given your description, but if the clients vary as to how much load they impose for each DNS lookup they do, you're more likely to see imbalances. For some clients, TTLs might contribute to this. However, given enough time, the pattern should shift, i.e., it wouldn't always be that this one IP gets most of the load. If the clients are daemons that stick to a server for months based upon a single DNS lookup, then this time might be very long. If you're dealing with typical web hits, such a scenario is unlikely. John ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: dns RR method is not equal balanced?
First and foremost you shouldn't be running any version of BIND 8. That is way out of date and open to a lot of exploits. That being said if by some -Ben Croswell On Mar 29, 2011 4:55 AM, Kay ch...@daumcorp.com wrote: Dear my friends. I use bind 8.4.7-REL on RHEL 4.4 OS and have thousands of domains. In my case ; some domain has 12 IPs but traffic of the server is not equal. The traffic of 11 IPs is same and just 1 IP is higher than others. Today, I moved the dns that is not equal to GSLB(F5) and set address-return 2(Maximum Addresses Returned). And then, it's disappeared, equal traffic incoming completely. Is there some kind of bugs in bind that I use? or any idea? Thanks. ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
RE: dns RR method is not equal balanced?
Not to mention that RedHat just announced pending EOL of RHEL4 last week. RHEL5 has been out since around 2007 and RHEL6 was released around the start of this year. From: bind-users-bounces+jlightner=water@lists.isc.org [mailto:bind-users-bounces+jlightner=water@lists.isc.org] On Behalf Of Ben Croswell Sent: Tuesday, March 29, 2011 8:56 AM To: Kay Cc: bind-users@lists.isc.org Subject: Re: dns RR method is not equal balanced? First and foremost you shouldn't be running any version of BIND 8. That is way out of date and open to a lot of exploits. That being said if by some -Ben Croswell On Mar 29, 2011 4:55 AM, Kay ch...@daumcorp.com wrote: Dear my friends. I use bind 8.4.7-REL on RHEL 4.4 OS and have thousands of domains. In my case ; some domain has 12 IPs but traffic of the server is not equal. The traffic of 11 IPs is same and just 1 IP is higher than others. Today, I moved the dns that is not equal to GSLB(F5) and set address-return 2(Maximum Addresses Returned). And then, it's disappeared, equal traffic incoming completely. Is there some kind of bugs in bind that I use? or any idea? Thanks. ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users Proud partner. Susan G. Komen for the Cure. Please consider our environment before printing this e-mail or attachments. -- CONFIDENTIALITY NOTICE: This e-mail may contain privileged or confidential information and is for the sole use of the intended recipient(s). If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you. -- ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: dns RR method is not equal balanced?
I apologize for the cut off reply. I accidently hit send before I was complete. If by some domains have 12 ips you mean a 12 A record round robin, then it is important remember that BIND doesn't have any way of telling the load on the 12 servers. So it's load sharing not load balancing. The f5 is load balancing so you would see a more even load across the 12 servers. -Ben Croswell On Mar 29, 2011 4:55 AM, Kay ch...@daumcorp.com wrote: Dear my friends. I use bind 8.4.7-REL on RHEL 4.4 OS and have thousands of domains. In my case ; some domain has 12 IPs but traffic of the server is not equal. The traffic of 11 IPs is same and just 1 IP is higher than others. Today, I moved the dns that is not equal to GSLB(F5) and set address-return 2(Maximum Addresses Returned). And then, it's disappeared, equal traffic incoming completely. Is there some kind of bugs in bind that I use? or any idea? Thanks. ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: dns RR method is not equal balanced?
Kay ch...@daumcorp.com wrote: some domain has 12 IPs but traffic of the server is not equal. The traffic of 11 IPs is same and just 1 IP is higher than others. If you use round-robin DNS you are relying on the clients not to muck around with the responses they get from your DNS server. If they sort them, for example, that will mess up the balancing. For example RFC 3484 screws it up. Tony. -- f.anthony.n.finch d...@dotat.at http://dotat.at/ FitzRoy, Sole: Mainly westerly or southwesterly 4 or 5, increasing 6 or 7 at times. Moderate or rough. Rain or showers, fog patches in Sole. Moderate, occasionally very poor in Sole. ___ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
