Book Image

Native Docker Clustering with Swarm

By : Fabrizio Soppelsa, Chanwit Kaewkasi
Book Image

Native Docker Clustering with Swarm

By: Fabrizio Soppelsa, Chanwit Kaewkasi

Overview of this book

Docker Swarm serves as one of the crucial components of the Docker ecosystem and offers a native solution for you to orchestrate containers. It’s turning out to be one of the preferred choices for Docker clustering thanks to its recent improvements. This book covers Swarm, Swarm Mode, and SwarmKit. It gives you a guided tour on how Swarm works and how to work with Swarm. It describes how to set up local test installations and then moves to huge distributed infrastructures. You will be shown how Swarm works internally, what’s new in Swarmkit, how to automate big Swarm deployments, and how to configure and operate a Swarm cluster on the public and private cloud. This book will teach you how to meet the challenge of deploying massive production-ready applications and a huge number of containers on Swarm. You'll also cover advanced topics that include volumes, scheduling, a Libnetwork deep dive, security, and platform scalability.
Table of Contents (18 chapters)
Native Docker Clustering with Swarm
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Dedication
Preface

Installing Flocker


A series of operations are necessary to get a running Flocker cluster:

  1. Install the flocker-ca utility to generate certificates.

  2. Generate the authority certificate.

  3. Generate the control node certificate.

  4. Generate the node certificates, one per node.

  5. Generate the flocker plugin certificate.

  6. Generate the client certificate.

  7. Install some software from packages.

  8. Distribute certificates to the Flocker cluster.

  9. Configure the installation, adding the main configuration file, agent.yml.

  10. Configure the packet filter on hosts.

  11. Start and restart system services.

You can execute them manually on a small cluster, but they are repetitive and tedious, so we'll illustrate the procedure using some self-explanatory Ansible playbooks published to https://github.com/fsoppelsa/ansible-flocker.

These plays are trivial and probably not production ready. There are also the official ClusterHQ playbooks for Flocker roles (refer to https://github.com/ClusterHQ/ansible-role-flocker), but for the linearity of the...