I have created a fancy interface which pretends to be an unified interface to access to different local tools located inside different datacenters. These tools are not accesible from the outside.
To solve this I thought that the best solution would be to create different VPN tunnels to the different DCs so I would have access to the different LANs and hence the tools. However, it sounds a bit complex as soon as I have ten or more different datacenters to manage and the list of tunnels increases (hence the probability of local IP crush due to shared subnets between DCs).
Is there any other better approach?