Right - I was just playing Devil's advocate with my question. I wasn't the OP.
We don't use load balancing for DNS here. However, we do use the F5 BigIP for other load balancing purposes so I know they're good for load balancing purposes and fairly stable. Of course as Alan points out the answer might depend a lot on what the OP is trying to do. -----Original Message----- From: Baird, Josh [mailto:jba...@follett.com] Sent: Monday, April 05, 2010 11:08 AM To: Lightner, Jeff; Alan Clegg; bind-users@lists.isc.org Subject: RE: Load Balancer for DNS Load balancing can also be used just to provide high availability for your caching/resolver servers. Often times, even though a resolver client will allow you to provide multiple resolving servers, if the primary resolver goes down the delay until the next resolver is tried often cripples applications. We load balance our resolvers for this reason. If one goes down, the load balancer removes it from the load balancing pool within seconds and the client keeps chugging right along with no interruption. DNS is easy to load balance because it is not persistent in nature. We use F5 BigIP's to load balance our resolvers, but a free solution like LVS would be sufficient as well. Thanks, Josh -----Original Message----- From: bind-users-bounces+jbaird=follett....@lists.isc.org [mailto:bind-users-bounces+jbaird=follett....@lists.isc.org] On Behalf Of Lightner, Jeff Sent: Monday, April 05, 2010 10:04 AM To: Alan Clegg; bind-users@lists.isc.org Subject: RE: Load Balancer for DNS That answer seems to imply that when load is high enough on existing caching servers the traffic will go to the others. Is that the case? At what point does this occur? -----Original Message----- From: bind-users-bounces+jlightner=water....@lists.isc.org [mailto:bind-users-bounces+jlightner=water....@lists.isc.org] On Behalf Of Alan Clegg Sent: Monday, April 05, 2010 10:58 AM To: bind-users@lists.isc.org Subject: Re: Load Balancer for DNS -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 4/5/2010 2:06 AM, sasa sasa wrote: > Hello everyone, > > Any one used any load balancer for DNSs? any recommendation? it's 2 > caching-only DNSs, and I'd like to make a load balance between them > using software. I would recommend that before adding "load balancers" that you consider the problem that you are actually attempting to solve. For the cost of a "load balancing solution" you might be able to deploy more caching servers that would probably work better in the long run.. AlanC -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAku5+n4ACgkQcKpYUrUDCYejngCfYritHVZBX8Is5idosnSNykO+ RYwAn2JXm+bF/u0VtRYs4Y+mq9Tb5bqH =vtqb -----END PGP SIGNATURE----- _______________________________________________ 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 _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
