#OpenStack start_guest_on_host_boot nova-compute bug See https://bugs.launchpad.net/nova/+bug/1081808 for more info

nova-compute bug 1081808 fix

Add the following lines into /etc/nova/nova.conf

start_guests_on_host_boot=false
resume_guests_state_on_host_boot=true

Otherwise if you are using the RCBOPS cookbooks from https://github.com/rcbops-cookbooks/ you can do the following
----
$ sudo -i

# knife exec -E '@e=Chef::Environment.load("rpcs"); \
[email protected]_attributes; \
a["nova"].merge!({"config" => {"start_guests_on_host_boot" => false}}); \
@e.override_attributes(a); @e.save'

# knife exec -E '@e=Chef::Environment.load("rpcs"); \
[email protected]_attributes; \
a["nova"].merge!({"config" => {"resume_guests_state_on_host_boot" => true}}); \
@e.override_attributes(a); @e.save'

#chef-client && chef-client

#service nova-compute restart

---
Found the following worked way better

# knife exec -E '@e=Chef::Environment.load("rpcs"); \
[email protected]_attributes; \
a["nova"].merge!({"config" => {"start_guests_on_host_boot" => false, "resume_guests_state_on_host_boot" => true}}); \
@e.override_attributes(a); @e.save'