How to connect to a virtual machine via SSH using Multipass

Sep 14, 2024#ubuntu #multipass #ssh130

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While learning eBPF, the author chose Multipass as a virtual machine on macOS due to a lack of good command-line options. They encountered issues connecting to the VM via VSCode SSH. After modifying the `sshd_config` to allow root login and both public key and password authentication, problems persisted. They discovered another configuration file, `/etc/ssh/sshd_config.d/60-cloudimg-settings.conf`, which needed changes. After modifying it and restarting the SSH service, they were able to enable password login successfully.

When recently learning eBPF, I found that there seemed to be no good command-line virtual machine on Mac except for Multipass, so I chose Multipass as the development environment and connected using VSCode SSH. However, I discovered that I couldn't connect to the virtual machine at all. Initially, I modified the sshd_config and added the following code:

# Allow root login
PermitRootLogin yes

# Allow public key authentication
PubkeyAuthentication yes

# Allow password authentication
PasswordAuthentication yes

I found that the problem still persisted. According to online tutorials, I discovered that there was another configuration file at /etc/ssh/sshd_config.d/60-cloudimg-settings.conf, so I modified that configuration file and restarted the SSH service to take effect.
Allow password login: PermitRootLogin yes
Restart the SSH service: sudo systemctl restart ssh