How To Install cloud-init on Ubuntu 18.04
Introduction
In this tutorial we learn how to install cloud-init on Ubuntu 18.04.
What is cloud-init
cloud-init is:
Cloud instances need special scripts to run during initialisation to retrieve and install ssh keys and to let the user run various scripts.
There are three methods to install cloud-init 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-init 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-init using apt-get by running the following command:
sudo apt-get -y install cloud-init
Install cloud-init Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install cloud-init using apt by running the following command:
sudo apt -y install cloud-init
Install cloud-init 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-init using aptitude by running the following command:
sudo aptitude -y install cloud-init
How To Uninstall cloud-init on Ubuntu 18.04
To uninstall only the cloud-init package we can use the following command:
sudo apt-get remove cloud-init
Uninstall cloud-init And Its Dependencies
To uninstall cloud-init and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove cloud-init
Remove cloud-init Configurations and Data
To remove cloud-init configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge cloud-init
Remove cloud-init configuration, data, and all of its dependencies
We can use the following command to remove cloud-init configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge cloud-init
References
Summary
In this tutorial we learn how to install cloud-init package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
