You're reading from Mastering Linux Administration - Second Edition

Product typeBook

Published inMar 2024

PublisherPackt

ISBN-139781837630691

Edition2nd Edition

Concepts

System Administration

Authors (2):

Alexandru Calcatinge

Julian Balog

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Provisioning VMs using cloud-init

When you’re dealing with only one VM, things can be relatively simple. But when we have to create hundreds of VMs, manual creation can be daunting. One useful tool you can use for such a task is cloud-init. Another tool that is suitable for this kind of task is Ansible (there’s more on Ansible in Chapter 17). In this section, we will cover only cloud-init. It was developed by Canonical to be used as a tool for configuring VM instances on cloud platforms, and it is written in Python. Currently, it is considered an industry standard for provisioning cloud images. In the next subsection, we will briefly explain to you how cloud-init works.

Understanding how cloud-init works

According to the official cloud-init documentation, it is based on several configuration sources, specific boot stages, user data formats, vendor data, and instance metadata. The concept of boot stages is specific to cloud-init architecture, as it configures the...

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Mastering Linux Administration - Second Edition

Published in: Mar 2024Publisher: PacktISBN-13: 9781837630691

Authors (2)

Alexandru Calcatinge

Alexandru Calcatinge is an open-minded architect with a background in computer science and mathematics. He is a senior university lecturer with a PhD in urban planning from Ion Mincu University of Architecture and Urban Planning and a postgraduate degree in DevOps from Caltech's Center for Technology and Management Education (CTME). He teaches students about architectural programming and development and open source technologies. He has authored five books on architecture and urban planning and numerous scientific articles on urban and rural development. Alex was certified as a Linux trainer in 2017. He loves the DevOps philosophy and the possibilities that cloud technologies bring for the future. He is also a certified programming analyst, computer network administrator, trainer, designer, and life coach.
Read more about Alexandru Calcatinge

Julian Balog

Julian Balog is a senior software engineer with more than 15 years of experience in the industry. Currently, his work primarily focuses on application delivery controllers, containerized workflows, networking, and security. With a never-ending passion for Linux and open-source technologies, Julian is always in pursuit of learning new things while solving problems and making things work through simple, efficient, and practical engineering. He lives with his wife, two children, and an Aussie-doodle in the greater Seattle area, Washington.
Read more about Julian Balog

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