Wednesday, June 19, 2019

Nested Virtualization KVM on CentOS 7

Nested Virtualization is disabled by default on CentOS 7, we can verify by running a command:

# cat /sys/module/kvm_intel/parameters/nested

Make sure KVM is intalled on the machine, if output is N, then Nested Virtualization is disabled, to enable the feature, set options kvm-intel nested=1 in /etc/modprobe.d/kvm-nested.conf

# echo "options kvm-intel nested=1" > /etc/modprobe.d/kvm-nested.conf

Reboot the machine, and verify like above command.

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