I worked at a place that ran Federated Consul in 60 DC's across ~40,000 machines running consul-agent. Originally, the largest DCs had about 8,000 nodes which c

I worked at a place that ran Federated Consul in 60 DC's across ~40,000 machines running consul-agent. Originally, the largest DCs had about 8,000 nodes which caused some problems that we had to work through. But I'm of the thought that you shouldn't have 8,000 of anything in a single "datacenter" without some kind of partition to reduce blast radius.