Cannot Open KVM Virtual Machine Manager on CentOS 7
I got following error message when I try to run KVM Virtual Machine Manager: virt-manager on SSH. Gtk-WARNING **: cannot open display: There are several things need to be checked: Make sure " X11Forwarding " is set to " yes " in /etc/ssh/sshd_config on the machine you run virt-manager . cat /etc/ssh/sshd_config | grep "^X11" If you are using Windows to connecting SSH. The X11 need to be forwarded to an "X Window server" on top of Windows. I use xming . If you connect SSH by Putty on Windows. Please configure X11 forwarding. Go to " Connection " -> " SSH " -> " X11 ". Check " Enable X11 forwarding ". Assign xming.exe path in " X authority file for local display ". If you are using terminal on Mac OS. You need to install Xquartz . It configures terminal automatically. Now you are ready to use "virt -manager ".