How to configure automatic startup of instance after a hypervisor reboot?¶
In the process of working with OpenStack, it was revealed that after restarting the hypervisor without overclocking the instance on it, after a successful launch of the hypervisor, instances on it do not automatically start. This problem can be solved in one of the following ways:
On compute nodes, where the function of automatically starting the instance is required, add the following line to the file
/etc/nova/nova.conf
:[Default] … resume_guests_state_on_host_boot=true
Also in the file
/etc/init.d/libvirt-guests
check for the following value:ON_SHUTDOWN=shutdown
Important
Services must be restarted to apply changes:
service libvirtd restart
service openstack-nova-compute restart