Book Image

Practical OneOps

By : Nilesh Nimkar
Book Image

Practical OneOps

By: Nilesh Nimkar

Overview of this book

Walmart’s OneOps is an open source DevOps platform that is used for cloud and application lifecycle management. It can manage critical and complex application workload on any multi cloud-based infrastructure and revolutionizes the way administrators, developers, and engineers develop and launch new products. This practical book focuses on real-life cases and hands-on scenarios to develop, launch, and test your applications faster, so you can implement the DevOps process using OneOps. You will be exposed to the fundamental aspects of OneOps starting with installing, deploying, and configuring OneOps in a test environment, which will also come in handy later for development and debugging. You will also learn about design and architecture, and work through steps to perform enterprise level deployment. You will understand the initial setup of OneOps such as creating organization, teams, and access management. Finally, you will be taught how to configure, repair, scale, and extend applications across various cloud platforms.
Table of Contents (18 chapters)
Practical OneOps
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Adding autorepair and autoreplace


Autorepair and autoreplace can be added to your assembly to keep it healthy and running in the event of foreseen and unforeseen interruptions. Autorepair automatically tries to heal your instances that are marked as unhealthy by OneOps because they triggered some healthy violation or missed a heartbeat. Both autorepair and autoreplace are configured at platform level and after an assembly is deployed. Autorepair is attempted before autoreplace and the methods differ on a case-by-case basis. For example, for Apache web server autorepair might try to restart the service if it's not responding.

However, for a compute node, it might try to reboot it. Similarly for a disk node, there might not be an autorepair procedure at all. If autorepair does not resolve the issue with a platform, the instance is marked for autoreplace. Autoreplace is triggered when the instance remains unhealthy despite OneOps's best efforts. Once an instance is marked for autoreplace, it...