Tips for libvirt

Connecting to a Remote and NAT-ed Hypervisor

I don’t know how but not only did virt-manager control the remote libvirtd hypervisor but VNC graphical console was also forwarded over the SSH tunnel
Prerequisits:

• RHEL 7
• root user is not permitted SSH login.

Remote Internet Router:

• enable SSH port forwarding from the remote Internet router to the remote hypervisor.

Remote Hypervisor:

• Reference: https://wiki.libvirt.org/page/SSHSetup
  Add the group “libvirt” to your user:
  usermod -a -G libvirt <user>

Uncomment the following 2 lines in /etc/libvirt/libvirtd.conf

unix_sock_group = "libvirt"  
unix_sock_rw_perms = "0770"
systemctl restart libvirtd

Local Graphical Desktop
Load you SSH key for the remote account and test connectivity:

ssh-add <ssh_private_key>
ssh -p <port> <user>@<ip>

Close the SSH session if you want to when you are happy it works correctly.

Start virt-manager with a connection to the remote hypervisor:

• virt-manager -c qemu+ssh://@:/system

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