Re: Slaving from DNS masters behind LVS

2013-02-13 Thread Chris Buxton
On Feb 12, 2013, at 7:00 PM, Nick Urbanik wrote: > We have a pair of DNS servers running BIND behind a direct routing LVS > director pair running keepalived. Let's call these two DNS servers A > and B, and the VIP V. > > They slave from a hidden master; let's call it M. > > I want to allow anoth

Re: Slaving from DNS masters behind LVS

2013-02-13 Thread Phil Mayers
On 13/02/13 15:34, Tony Finch wrote: Nick Urbanik wrote: I think that it is not necessarily always true that you should avoid a load balancer. Every day, our DNS caches are answering about 140,000 queries per second. I think that it is rather hard to configure resolvers to query only three m

Re: Slaving from DNS masters behind LVS

2013-02-13 Thread Tony Finch
Nick Urbanik wrote: > > I think that it is not necessarily always true that you should avoid a > load balancer. Every day, our DNS caches are answering about 140,000 > queries per second. I think that it is rather hard to configure > resolvers to query only three machines yet still meet the dema

Re: Slaving from DNS masters behind LVS

2013-02-13 Thread Phil Mayers
On 13/02/13 14:30, Nick Urbanik wrote: I think that it is not necessarily always true that you should avoid a load balancer. Every day, our DNS caches are answering about 140,000 queries per second. I think that it is rather hard to configure resolvers to query only three machines yet still m

Re: Slaving from DNS masters behind LVS

2013-02-13 Thread Nick Urbanik
Dear WBrown, Thank you for your helpful reply. On 13/02/13 08:11 -0500, wbr...@e1b.org wrote: Nick wrote on 02/12/2013 10:00:27 PM: We have a pair of DNS servers running BIND behind a direct routing LVS director pair running keepalived. Let's call these two DNS servers A and B, and the VIP V

Re: Slaving from DNS masters behind LVS

2013-02-13 Thread WBrown
Nick wrote on 02/12/2013 10:00:27 PM: > We have a pair of DNS servers running BIND behind a direct routing LVS > director pair running keepalived. Let's call these two DNS servers A > and B, and the VIP V. Several years ago I was lucky enough to take the ISC class on bind. One of my questions g

Re: Slaving from DNS masters behind LVS

2013-02-12 Thread Mike Hoskins (michoski)
Note: Removing cross-post, but feel free to forward. -Original Message- From: Nick Urbanik Date: Tuesday, February 12, 2013 10:00 PM To: "keepalived-de...@lists.sourceforge.net" , "bind-users@lists.isc.org" Subject: Slaving from DNS masters behind LVS >Dear Folk

Slaving from DNS masters behind LVS

2013-02-12 Thread Nick Urbanik
Dear Folks, We have a pair of DNS servers running BIND behind a direct routing LVS director pair running keepalived. Let's call these two DNS servers A and B, and the VIP V. They slave from a hidden master; let's call it M. I want to allow another machine S to slave from A and B, the pair of D