How do you manage multiple machines in different locations. The use case is something like this, i want self hosted different apps in different locations as redundancy. Something like i put one server in my house, one in my dad’s house, couple other in my siblings/friends house. So just in case say machine in my house down or internet down. It can fallback to the other machines. I was thinking using docker swarm on multiple raspberry pis. But opening port on router seems not secure at all. How do i connect those machine together? Should i put wireguard on server # 1 and other servers will connect to that server. But if the network/machine failed on thar server; everything else will not work.
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You might just run it in the cloud. A DR failover process is a bit more complex than most home server environments, and is rarely automatic or smooth.