To access the console logs of an instance, the following information is required:

For this example, we will view the last five lines of the cookbook.test instance.

To show the console logs of an instance, use the following command:

openstack console log show --lines 5 cookbook.test

This connects to the serial console output of an instance, mimicking the information as if a monitor was directly attached to a physical server:

[[0;32m  OK  [0m] Started udev Coldplug all Devices.
[[0;32m  OK  [0m] Started Dispatch Password Requests to Console Directory Watch.
[[0;32m  OK  [0m] Started Set console font and keymap.
[[0;32m  OK  [0m] Created slice system-getty.slice.
[[0;32m  OK  [0m] Found device /dev/ttyS0.

The openstack console log show command collects the console logs, as if you were connected to the server via a serial port or sitting behind the keyboard and monitor at boot time. The command will, by default, return all of the logs generated to that point. To limit the amount of output, the --lines parameter can be used to return a specific number of lines from the end of the log.