Marcus is right. The LB VM resides just on one tier (App in my FS example). To manage the access from Web Tier to the App tier, Network ACLs will be used.
-Alena. On 3/25/13 7:55 PM, "Marcus Sorensen" <shadow...@gmail.com> wrote: >I assume, and it seems this way from the spec, that the load balancer VM >just lives in the same network as the VMS you want to balance and >redirects >traffic to them. It has a link local nic plus 1 nic. > >That's why I was thinking it would be easy to just create a static Nat >rule >to the internal load balancer for public load balancing on any network >tier. >On Mar 25, 2013 8:46 PM, "Vijay Venkatachalam" < >vijay.venkatacha...@citrix.com> wrote: > >> If the services are provided by a LBVM, it should have access to both >> networks, one NIC in the web tier (the guest network where the VIP is >> present) and one NIC in the App Tier (the guest network where the server >> vms are present), would that understanding be right? So when >>provisioning >> the LB VM the user has to specify these 2 networks? >> >> On the similar lines, if an external LB Appliance is providing the >> service, it has to be wired to both the VIP network and the server vm >> network. >> >> Thanks, >> Vijay V. >> >> > -----Original Message----- >> > From: Alena Prokharchyk [mailto:alena.prokharc...@citrix.com] >> > Sent: Saturday, March 23, 2013 4:28 AM >> > To: cloudstack-...@incubator.apache.org >> > Cc: Alex Huang; Chiradeep Vittal >> > Subject: [PROPOSAL] "Internal Load Balancing between VPC tiers" >> > >> > I would like to propose a new feature - "Internal Load Balancing >>between >> > VPC tiers". With the feature support, you can set up the Load >>Balancer >> inside >> > the VPC without facing the public network side. It will allow to >>balance >> > internal traffic between tiers inside the VPC - for example, traffic >> coming >> > from Web Tier to the App tier. >> > >> > >> > Please review the firs draft of FS and provide your comments and >> feedback. >> > If you feel like some details are missing, let me know and I'll >>update it >> > promptly. >> > >> > https://cwiki.apache.org/confluence/display/CLOUDSTACK/Internal+Load+B >> > alanc >> > ing+between+VPC+tiers >> > >> > >> > Alex/Chiradeep, would appreciate your reviewal as you were the >>original >> > contributors for the majority of cloudStack Networking code. >> > >> > >> > Thank you, >> > -Alena. >> >> >
