Gregory's Server
3️⃣7️⃣ Here's the 37th post highlighting key new features of the current v257 release of systemd. #systemd257
In systemd v256 we added a small tool "systemd-ssh-proxy" whose job is to allow connecting to local VMs with ssh via the AF_VSOCK protocol (as opposed to AF_INET/AF_INET6). It acts as host-side counterpart to the guest-side systemd-ssh-generator that automatically binds sshd to AF_VSOCK.
In systemd v257 the functionality has been updated so that instead of specifying…
…the AF_VSOCK "CID" (which is like an IP address, i.e. an identifier for the local VM) you can specify a friendly machine name, if the VM in question is registered with systemd-machined. systemd-vmspawn sets things up that way out of the box, of course. That means, with current off-the-shelf systemd inside a VM and on the host you can now just do "ssh machine/foobar" to connect to a local VM called "foobar", via AF_VSOCK, i.e. independently of any fragile network.