Book Image

Mastering GitLab 12

By : Joost Evertse
Book Image

Mastering GitLab 12

By: Joost Evertse

Overview of this book

GitLab is an open source repository management and version control toolkit with functions for enterprises and personal software projects. It offers configurability options, extensions, and APIs that make it an ideal tool for enterprises to manage the software development life cycle. This book begins by explaining GitLab options and the components of the GitLab architecture. You will learn how to install and set up GitLab on-premises and in the cloud, along with understanding how to migrate code bases from different systems, such as GitHub, Concurrent Versions System, Team Foundation Version Control, and Subversion. Later chapters will help you implement DevOps culture by introducing the workflow management tools in GitLab and continuous integration/continuous deployment (CI/CD). In addition to this, the book will guide you through installing GitLab on a range of cloud platforms, monitoring with Prometheus, and deploying an environment with GitLab. You'll also focus on the GitLab CI component to assist you with creating development pipelines and jobs, along with helping you set up GitLab runners for your own project. Finally, you will be able to choose a high availability setup that fits your needs and helps you monitor and act on results obtained after testing. By the end of this book, you will have gained the expertise you need to use GitLab features effectively, and be able to integrate all phases in the development process.
Table of Contents (30 chapters)
Free Chapter
1
Section 1: Install and Set Up GitLab On-Premises or in the Cloud
6
Section 2: Migrating Data from Different Locations
11
Section 3: Implement the GitLab DevOps Workflow
17
Section 4: Utilize GitLab CI and CI Runners
23
Section 5: Scale the Server Infrastructure (High Availability Setup)

Setting up Geo

GitLab Geo is a feature of GitLab that is part of the premium Enterprise version and higher. It is used to create a replica of a whole GitLab instance in another geographical location. Items such as user accounts, issues, events, and other objects are synced—not only items from the database, but also files from the filesystem.

There are several steps involved in installing Geo for your environment:

  1. Install the GitLab software and license on both nodes, but don't activate them.
  2. Prepare the database replicas.
  3. Change the SSH key lookup method to the database.
  4. Add the secondary node via the web UI.

The first two steps in our example project can be executed by the Ansible scripts that are part of the repository for this book. Steps 3 and step 4 have to be done manually. Let's deep dive into these steps.

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