Openstack console log is empty on nodes whose nova-compute is running on container

Question

After Openstack migration to the container environment, I cannot get console logs.

• When I run openstack console log show SERVER_NAME, it returns nothing.
• When I visit console tab in the instance detail of Horizon UI, it returns nothing.

I checked the instance log file in the nova-compute container and realized that the console.log file is existing.

Containerization of openstack services can be the problem?

Answer 1

I found the reason and it seems valuable to share the solution.

Reason

When the VM is created by libvirt/qemu, a pty device is created under /dev/pts. When get console log, Nova checks if the device exists in that path. But now Nova compute is containerized and /dev/pts is not mounted on it.

Solution

Mount /dev/pts to the container using volumeMount in the container manifest.