> Not only that, only scaling vertically on a single node doesn't seem like a good design.
For Prometheus at least, we're so efficient that it actually works out okay for the vast majority of users. You'd typically need thousands of instances doing the same thing inside a single datacenter before you get into our (admittedly more involved) horizontal sharding approach.
> There are ways to poll things and push metrics without opening millions of firewall ports to every security group. Sensu does that quite well, and it scales.
I don't think that's quite a fair comparison. Sensu Just Works when there's no outbound firewall, Prometheus Just Works when there's no inbound firewall. If you add the other direction of firewall for either then things break down.
For Prometheus at least, we're so efficient that it actually works out okay for the vast majority of users. You'd typically need thousands of instances doing the same thing inside a single datacenter before you get into our (admittedly more involved) horizontal sharding approach.
http://www.robustperception.io/scaling-and-federating-promet... has more information.
> There are ways to poll things and push metrics without opening millions of firewall ports to every security group. Sensu does that quite well, and it scales.
I don't think that's quite a fair comparison. Sensu Just Works when there's no outbound firewall, Prometheus Just Works when there's no inbound firewall. If you add the other direction of firewall for either then things break down.