Find the datacenters the Solana nodes are at

Full list:

solana gossip -v | vdump.js 

Totals at locations:

solana gossip -v | vdump.js -s 

Nodes at locations with at most 2 nodes:

solana gossip -v | vdump.js -max 2

YAML list of the same nodeIDs

solana gossip -v | vdump.js -max 2 -oi