When clustering two or more ATS servers in full clustered mode I assume the ATS servers transfer cached objects between themselves. Should I ensure that traffic be done over a dedicated network the ATS servers share separate from their main interface? I was seeing a high cache miss cold rate and poor network performance when curling a largish file when I set up clustering with two nodes on a single vlan. I was testing with ATS 3.0.4 on OEL 6 linux with bonded interfaces).
On Apr 24, 2012, at 10:17 AM, Leif Hedstrom wrote: > On 4/24/12 11:00 AM, Leif Hedstrom wrote: >> On 4/24/12 10:41 AM, Christopher Arnold wrote: >>> Will an ats cluster work correctly if load balanced using a layer 3 or 4 >>> slb solution like a netscaler? >>> >> >> Yeah, why not ? I used to use ATS behind both DSR and Inline SLBs, with the >> origins typically behind a DSR SLB. Personally, going forward, I would put >> ATS on local TCP anycast, with 10GigE NICs straight to the BAS (and then to >> the router). > > > I should add, if you don't worry about e.g. SYN flood attacks, then an SLB in > DSR mode would be able to load balance a ton of traffic to the ATS layer. > > -- leif >
