Cloud-Init and VMs

1. What is cloud-init?
2. What is cloud-init in Azure?
3. What are the three configuration stages used by cloud-init?
4. What is azure VMs?
5. What is cloud init target?
6. How do I get rid of cloud init?
7. How does cloud init work?
8. How do I find my cloud init log?
9. What is cloud init in openstack?
10. Does cloud-init run before Systemd?
11. How do I start cloud-init?
12. Does cloud-init run every boot?

What is cloud-init?

Cloud-init is the industry standard multi-distribution method for cross-platform cloud instance initialization. It is supported across all major public cloud providers, provisioning systems for private cloud infrastructure, and bare-metal installations.

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.

What are the three configuration stages used by cloud-init?

Cloud-Init Stages in Upstart and Systemd

• /etc/init/cloud-init-local.conf (Upstart) start on mounted MOUNTPOINT=/
• /lib/systemd/system/cloud-init-local.service (Systemd) ...
• Execute: /usr/bin/cloud-init init --local.
• Runs prior to network setup. ...
• If a data source is not found at the above, it will look for VFAT or ISO device with LABEL="cidata".

What is azure VMs?

Azure Virtual Machines is the Azure infrastructure as a service (IaaS) used to deploy persistent VMs with nearly any VM server workload that you want. They are image service instances that provide on-demand and scalable computing resources with usage-based pricing.

What is cloud init target?

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 environments like OpenStack, AWS etc.

How do I get rid of cloud init?

Uninstall

1. Disable all services (uncheck everything except "None"): dpkg-reconfigure cloud-init.
2. Uninstall the package and delete the folders sudo dpkg-reconfigure cloud-init sudo apt-get purge cloud-init sudo rm -rf /etc/cloud/ && sudo rm -rf /var/lib/cloud/
3. Restart the computer sudo reboot.

How does cloud init work?

cloud-init is package performing various configurations on a virtual machine on first boot. You have to configure a file with your config, and throw it at your VM then you virtualize it.

How do I find my cloud init log?

The default location for cloud init user data is already /var/log/cloud-init-output. log , in AWS, DigitalOcean and most other cloud providers. You don't need to set up any additional logging to see the output.

What is cloud init in openstack?

Cloud-init is the service that is installed inside the instance and cloud-config are a set of scripts that are executed as soon as the instance is started. ... For example, passing a bash script to basically any instance will succeed because all instances have bash installed by default.

Does cloud-init run before Systemd?

When booting under systemd, a generator will run that determines if cloud-init. target should be included in the boot goals. By default, this generator will enable cloud-init.

How do I start cloud-init?

Provisioning your Instance with Cloud-Init

1. Create your instance. $ scw create --commercial-type=START1-S --name=myvm image Id server Id
2. Use the scw _userdata command to provide your newly created instance. $ scw _userdata server Id cloud-init=@/path/to/cloud-config-file cloud-init.
3. Start your instance.

Does cloud-init run every boot?

By default, user data scripts and cloud-init directives run only during the first boot cycle when an EC2 instance is launched. However, you can configure your user data script and cloud-init directives with a mime multi-part file.