How To Install cloud-initramfs-rescuevol on Ubuntu 18.04

In this tutorial we learn how to install cloud-initramfs-rescuevol on Ubuntu 18.04. cloud-initramfs-rescuevol is boot off a rescue volume rather than root filesystem

Introduction

In this tutorial we learn how to install cloud-initramfs-rescuevol on Ubuntu 18.04.

What is cloud-initramfs-rescuevol

cloud-initramfs-rescuevol is:

This package adds functionality to an initramfs built by initramfs-tools. When installed the initramfs will check to see if any partitions with a label of ‘RESCUE_VOL’ are attached. If such a volume is attached, it will boot off that volume rather than the root volume.

This is useful in a cloud environment, when the user is able to attach and detach volumes to a running system, but has no other mechanism for interupting of fixing a failed boot. It is analogous to inserting a rescue CD into a system to recover from failure.

There are three methods to install cloud-initramfs-rescuevol on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install cloud-initramfs-rescuevol Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install cloud-initramfs-rescuevol using apt-get by running the following command:

sudo apt-get -y install cloud-initramfs-rescuevol

Install cloud-initramfs-rescuevol Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install cloud-initramfs-rescuevol using apt by running the following command:

sudo apt -y install cloud-initramfs-rescuevol

Install cloud-initramfs-rescuevol Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install cloud-initramfs-rescuevol using aptitude by running the following command:

sudo aptitude -y install cloud-initramfs-rescuevol

How To Uninstall cloud-initramfs-rescuevol on Ubuntu 18.04

To uninstall only the cloud-initramfs-rescuevol package we can use the following command:

sudo apt-get remove cloud-initramfs-rescuevol

Uninstall cloud-initramfs-rescuevol And Its Dependencies

To uninstall cloud-initramfs-rescuevol and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:

sudo apt-get -y autoremove cloud-initramfs-rescuevol

Remove cloud-initramfs-rescuevol Configurations and Data

To remove cloud-initramfs-rescuevol configuration and data from Ubuntu 18.04 we can use the following command:

sudo apt-get -y purge cloud-initramfs-rescuevol

Remove cloud-initramfs-rescuevol configuration, data, and all of its dependencies

We can use the following command to remove cloud-initramfs-rescuevol configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge cloud-initramfs-rescuevol

References

Summary

In this tutorial we learn how to install cloud-initramfs-rescuevol package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.