A client of mine is setup using normally 7 Linode VMs..
Due to ahem.. "issues" related to a network change in the DC, that's going to balloon out to around 10 or 12 for a little while, then shrink back down.
- 2x load balancers (1 is active for public traffic; backup for private traffic; 1 is active for private traffic; backup for public traffic);
- 3x DB cluster nodes (currently at 5 due to aforementioned issues);
- 2x Web/App nodes
Currently planning to adapt this into 3 distinct sites with simpler 1x web/app + 1x db per-site to move the redundancy point out to specific DCs rather than to individual roles within a single DC.
Due to ahem.. "issues" related to a network change in the DC, that's going to balloon out to around 10 or 12 for a little while, then shrink back down.
- 2x load balancers (1 is active for public traffic; backup for private traffic; 1 is active for private traffic; backup for public traffic);
- 3x DB cluster nodes (currently at 5 due to aforementioned issues);
- 2x Web/App nodes
Currently planning to adapt this into 3 distinct sites with simpler 1x web/app + 1x db per-site to move the redundancy point out to specific DCs rather than to individual roles within a single DC.