Exactly. Sent from my iPad
On Dec 8, 2012, at 8:45 AM, Hermes Flying <flyingher...@yahoo.com> wrote: > I see. With the 2 switches you mention I guess it would not be possible to > set the 2 lixux which have a single port NIC.Right? > > From: David Coulson <da...@davidcoulson.net> > To: Hermes Flying <flyingher...@yahoo.com> > Cc: "haproxy@formilux.org" <haproxy@formilux.org> > Sent: Saturday, December 8, 2012 3:41 PM > Subject: Re: HAProxy basic setup question > > Yep - The systems we use in clustered environments typically have 4 or 6 NICs > for redundant front-end and back-end networks. > > That's why I told you to pay someone to build it. > > On 12/8/12 8:38 AM, Hermes Flying wrote: >> Are you assuming multi-port NICs? Sorry if this is a trivial question but I >> am an application programmer and lack your background. >> >> From: David Coulson <da...@davidcoulson.net> >> To: Hermes Flying <flyingher...@yahoo.com> >> Cc: "haproxy@formilux.org" <haproxy@formilux.org> >> Sent: Saturday, December 8, 2012 3:36 PM >> Subject: Re: HAProxy basic setup question >> >> Well, since it's 2012 you use a switch instead of a hub. And as I described >> earlier you can take two switches and connect systems to both, reducing the >> risk of a hardware fault taking everything down. You use the bonding >> capability in Linux to make the two NIC ports appear as one logical >> interface in the OS. >> >> If you are so worried about building a massively resilient system, you need >> to pay someone to build it for you. In my experience, a poorly built >> 'redundant' environment ends up with more downtime than a one with multiple >> single points of failure. >> >> On 12/8/12 8:33 AM, Hermes Flying wrote: >>> 2 Linuxes connecting LBs over the same hub. Not sure what you mean by 2 >>> switches >>> Isn't it SPOF? If the hub breaks then no load balancing >>> >>> From: David Coulson <da...@davidcoulson.net> >>> To: Hermes Flying <flyingher...@yahoo.com> >>> Cc: "haproxy@formilux.org" <haproxy@formilux.org> >>> Sent: Saturday, December 8, 2012 3:31 PM >>> Subject: Re: HAProxy basic setup question >>> >>> >>> On 12/8/12 8:30 AM, Hermes Flying wrote: >>>> So this would be e.g. Pacemaker? >>> Yes >>> >>>> Also such a setup is considered a SPOF right? >>> No - Two switches, right? > > >
