Date: Thu, 7 Aug 2008 01:15:01 -0700 From: =?ISO-8859-1?Q?Ask_Bj=F8rn_Hansen?= <ask@develooper.com> To: Rodrique Heron <swygue@rodhouse.org> Cc: freebsd-pf@freebsd.org Subject: Re: Understanding Load Balancing with DNS+PF+CARP Message-ID: <3E55632D-BD42-4299-BF63-976152B514DD@develooper.com> In-Reply-To: <1a5f1a2d0808050648g4dcc4e02pe1904f1ffa8bb2cf@mail.gmail.com> References: <1a5f1a2d0808050648g4dcc4e02pe1904f1ffa8bb2cf@mail.gmail.com>
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On Aug 5, 2008, at 6:48, Rodrique Heron wrote: > I'm a running a Apache reverse proxy on PF+CARP, one node as master > the > other backup. I want a active/active setup, but since I don't have a > hardware load balancer I'm banking on DNS. I would like to > understand what > happens when a host connects to the cluster for the first time after > the > first DNS query. > > So a user request www.website.com, DNS round-robin points the user > to node1, > what happens when a the user makes another request ? "It depends". The client is in control of that. Clients are different. The setup I usually recommend is to have CARP (or similar) move one IP around and then ahve nginx or perlbal running to load balance to the actual servers. - ask -- http://develooper.com/ - http://askask.com/
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