Empty log output for Linux instances in OpenStack

Question

Hi everyone,

We can view the log output of running instances from either the Log tab of the dashboard or the output of nova console-log. But the log output of a running Linux instance shows empty. Is there anything wrong with my configuration?

Thank You

Answer 1

Hi@akhtar,

This occurs when the Compute service attempts to retrieve the log output of the instance via a serial console while the instance itself is not configured to send output to the console.

To rectify this, append the following parameters to kernel arguments specified in the instance's boot loader.

console=tty0 console=ttyS0,115200n8

Upon rebooting, the instance will be configured to send output to the Compute service.

Thank You