I'm trying to figure out how to SSH into a Linux virtual machine (VM) from my host Linux system. What steps do I need to take to make that connection successful? Are there specific network configurations or settings I need to be aware of?
3 Answers
To SSH into your VM, you'll need to check that the VM's SSH server is actually running and find out its IP. Make sure the VM’s network settings are correct. If your VM is using a virtual network, it might have an IP like 172.20.0.2 which you can find with commands like `ifconfig` or `ip add`. From your host, you should be able to SSH into it with something like `ssh [email protected]` if everything is set up right.
There are different networking setups for VMs. You might need to configure the networking first. Once the VM is up, use `ifconfig` or `ip add` to check its IP. Then, on your host, check the virtual network settings too. Once you have the correct addresses, you can connect via SSH. It's important to have the right configurations in place to allow for connections.
Good point! Using tools like Docker can also affect how your VM gets its IP. If you see a bridge interface, that's a clue; check those settings to ensure you can reach the VM.
Make sure that your VM’s SSH service is active and listening on port 22. You can check this with `ss -nlt '( sport = :22 )'`. Also, look at your host and VM configurations—ensure they’re able to communicate. If everything checks out, SSH from your host like this: `ssh user@`.
Exactly! Also, don't forget to configure your firewall if needed, and ensure the SSH service on the VM is active!