Anyone? I know I'm trying to squeeze some free paid consulting here :), but trying to understand if PODs makes sense in this situation....
Thx On 2 October 2017 at 10:21, Andrija Panic <andrija.pa...@gmail.com> wrote: > Hi guys, > > Sorry for long post below... > > I was wondering if someone could bring some light for me for multiple PODs > networking design (L2 vs L3) - idea is to make smaller L2 broadcast domains > (any other reason?) > > We might decide to transition from current single pod, single cluster > (single zone) to multiple PODs design (or not...) - we will eventually grow > to over 50 racks worth of KVM hosts (1000+ hosts) so Im trying to > understand best options to avoid having insanely huge L2 broadcast > domains... > > Mgmt network is routed between pods, that is clear. > > We have dedicated primary storage network and Secondary Storage networks > (vlan interfaces configured locally on all KVM hosts, providing direct L2 > connection obviously, not shared with mgmt.network), and same for Public > and Guest networks... (Advanced networking in zone, Vxlan used as isolation) > > Now with multiple PODs, since Public Network and Guest network is defined > per Zone level (not POD level), and currently same zone-wide setup for > Primary Storage... what would be the best way to make this traffic stay > inside PODs as much as possible and is this possible at all? Perhaps I > would need to look into multiple zones, not PODs. > > My humble conclusion, based on having all dedicated networks, is that I > need to strech (L2 attach as vlan interface) primary and secondary storage > network across all racks/PODs, and also need to strech Guest vlan (that > carry all Guest VXLAN tunnels), and again same for Public Network...and > this again makes huge broadcast domains and doesn't solve my issue... > Don't see other option in my head to make networking work across PODs. > > Any suggestion is most welcome (and if of any use as info - we dont plan > for any Xen, VmWare etc, will stay purely with KVM). > > Thanks > Andrija > -- Andrija Panić
