Oracle Linux: How to Enable systemd.debug-shell in KVM Domains (Doc ID 3020028.1)

Last updated on MAY 02, 2024

Applies to:

Goal

The Systemd Debug Shell (systemd.debug-shell) is a powerful troubleshooting tool in the Linux environment, provided by the systemd init system. It offers administrators a way to access a root shell during the early boot process, before the system fully initializes. This can be invaluable for diagnosing and resolving issues that occur during boot-up, such as failed services.

Enabling systemd.debug-shell within KVM domains presents a unique challenge due to the default console access limitations. Unlike the serial console accessible through the CLI, systemd.debug-shell utilizes tty9, a separate terminal interface typically inaccessible through standard methods.

This article outlines the step-by-step instructions to overcome this hurdle and enable systemd.debug-shell within KVM domains effectively.

Solution

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