
Production Ready OpenStack - Recipes for Successful Environments
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Not all environments always have virtualization capabilities supported by the CPU, for example, test environments running the Nova Compute nodes on virtual machines. In such cases, we can configure Nova to use a QEMU virtualization hypervisor emulation. This significantly reduces the performance of virtual machine instances running with the QEMU hypervisor emulation, but allows you to run virtual machine instances without virtualization support by the CPU.
Follow these steps to configure Nova-compute with the QEMU emulation:
Install QEMU and the libvirt
packages:
[root@compute1 ~]# yum install qemu libvirt libvirt-python libguestfs-tools
Start and enable libvirt
:
[root@compute1 ~]# systemctl start libvirtd [root@compute1 ~]# systemctl enable libvirtd
Using the openstack-config
command, set the compute_driver
parameter under the DEFAULT
section to use the libvirt
driver:
[root@compute1 ~]# openstack-config --set /etc/nova...
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