KVM Console Not working

Posted: 2011-11-25 13:09:11 by Alasdair Keyes

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I've noticed that with KVM virtual machines, the kvm console <domainid> doesn't appear to work, when running you get

# virsh console MyVM
Connected to domain MyVM
Escape character is ^]

Hitting enter gives you nothing It appears that this isn't bug with KVM, rather the Guest OS isn't aware that it should start up a ttyS for KVM to connect to. When starting the machine, enter into grub and add the following to the kernel options...

console=ttyS0,115200

Then when the virtual machine starts you can connect again using virsh and hit enter a couple of times

[root@inth1-vdc-lvh01 ~]# virsh console MyVM
Connected to domain MyVM
Escape character is ^]

CentOS Linux release 6.0 (Final)
Kernel 2.6.32-71.el6.x86_64 on an x86_64

centos-6-0 login:

Voila... Obviously this isn't going to work for Windows :)

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