How to guarantee even distribution of VMs across regions?

[greg]

Hi,

Assuming you are not using autoscaling, I believe this should work:

fly scale count 3 --max-per-region 1

Give it a minute and then check to see where the vms are. I guess a vm still may not be created in a chosen region (like if the region is having issues, capacity etc). But if all is well, it should be.

If you are using autoscaling, it’s a bit more complicated because of how the innards work. This thread details some of the complexity with autoscaling and distribution:

Standard Autoscale not placing VMs in each region

Hi @ntho, Based on the previous threads @ignoramous helpfully linked, it does seem that the Nomad-based scheduler hasn’t always spread instances evenly across configured regions as expected. The Nomad scheduler considers several combined factors when making placement decisions, so it might be that some of the other regions were closer to their capacity limits. Or it could be some other bug in Nomad or our configuration that we haven’t tracked down yet. We’re working on replacing the Nomad sch…