What is a cloud-init file?

Cloud-init is a package that contains utilities for early initialization of cloud instances. It is needed in arch linux images that are built with the intention of being launched in cloud like OpenStack, AWS etc. The package lets you run a script during the VM boot process.

What is the purpose of cloud-init Ubuntu?

Summary. cloud-init is the Ubuntu package that handles early initialization of a cloud instance. It is installed in the official Ubuntu live server images since the release of 18.04, Ubuntu Cloud Images and also in the official Ubuntu images available on EC2.

What user does cloud-init run as?

1 Answer. Ubuntu cloud-config runs as root.

What is cloud-init in AWS?

The cloud-init package configures specific aspects of a new Amazon Linux instance when it is launched; most notably, it configures the . ssh/authorized_keys file for the ec2-user so you can log in with your own private key. For more information, see cloud-init.

What is cloud-init in Azure?

Cloud-init is a widely used approach to customize a Linux VM as it boots for the first time. You can use cloud-init to install packages and write files, or to configure users and security.

Where is cloud-init stored?

Cloud-init config is provided in two places: /etc/cloud/cloud. cfg. /etc/cloud/cloud.

What does cloud-init clean do?

cloud-init clean Remove cloud-init artifacts from /var/lib/cloud and optionally reboot the machine to so cloud-init re-runs all stages as it did on first boot. –logs: Optionally remove /var/log/cloud-init*log files. –reboot: Reboot the system after removing artifacts.

What is cloud-init Linux?

cloud-init is a widely used approach to customize a Linux VM as it boots for the first time. You can use cloud-init to install packages and write files, or to configure users and security. cloud-init also works across distributions.

What can I do with cloud-init?

cloud-init is a software package that automates the initialization of cloud instances during system boot….Some sample tasks that cloud-init can perform include:

1. Configuring a host name.
2. Installing packages on an instance.
3. Running scripts.
4. Suppressing default virtual machine (VM) behavior.

What is AWS ec2 used for?

You can use Amazon EC2 to launch as many or as few virtual servers as you need, configure security and networking, and manage storage. Amazon EC2 enables you to scale up or down to handle changes in requirements or spikes in popularity, reducing your need to forecast traffic.

What is ec2 instance user data?

AWS userdata is the set of commands/data you can provide to a instance at launch time. For example if you are launching an ec2 instance and want to have docker installed on the newly launched ec2, than you can provide set of bash commands in the userdata field of aws ec2 config page. Usecase. Automated deployments.

How do I use cloud init in Azure?

For cloud-init examples of configuration changes, see the following documents:

1. Add an additional Linux user to a VM.
2. Run a package manager to update existing packages on first boot.
3. Change VM local hostname.
4. Install an application package, update configuration files and inject keys.