GitLab

GitLab is a web-based DevOps lifecycle software service or locally installed that provides a Git-repository manager providing wiki, issue-tracking and CI/CD pipeline features, using an open-source license.

Since April 2018, GitLab support integration with Google Kubernetes Engine (GKE) to simplify the process of spinning up a new Kubernetes cluster and deploy applications.

GitLab provides a Prometheus integration guide to export GitLab metrics to Prometheus monitoring system and it is activated by default since version 9.0 in 2017.

GitLab is integrated of different modules including /GitLab Runner/ (./gitlab-ci.yml/) responsible for the continuous integration with an embedded HTTP Statistics Server with Prometheus metrics available on /metrics since GitLab Runner 1.8.0.

GitLab offers many features such as:

• audit events
• container registry
• ElasticSearch and Sentry integration (not installed with GitLab)
• read-only mirrors called GitLab Geo (Premium)
• SAML 2.0 Service Provider (SP) capabilities used for Web Browser Single Sign-On (SSO)

An integrates with many platforms such as Salesforce DX and Snowplow.

GitLab Software

Binaries

• gitlab-ctl
  • gitlab-ctl tail
  • gitlab-ctl pg-password-md5 gitlab

Configuration files

• Default configuration file: /etc/gitlab/gitlab.rb
• Secrets: /etc/gitlab/gitlab-secrets.json
• Default data directory: /var/opt/gitlab/git-data
• GitLab CI/CD pipelines: ./gitlab-ci.yml/ https://docs.gitlab.com/ee/ci/yaml/

Activities

Basic

1. Read GitLab CI/CD Pipeline Configuration Reference:.gitlab-ci.yml https://docs.gitlab.com/ee/ci/yaml/

Medium

1. Read GitLab release notes/Changelog
2. /Install GitLab/ using docker containers. Note: Gitlab uses PostgreSQL as database backend.

Advanced

1. Review Ansible GitLab modules https://docs.ansible.com/ansible/latest/modules/list_of_all_modules.html
2. Enable Gitlab container registry in: /etc/gitlab/gitlab.rb

GitLab and Kubernetes

Since April 2018, GitLab simplifies process of spinning up a new Kubernetes cluster in Google Kubernetes Engine (GKE) to deploy applications.

See also

• Jenkins X
• w:Comparison_of_source-code-hosting_facilities: GitHub, TeamCity
• Git
• DevOps/JFrog Artifactory

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Source: https://en.wikiversity.org/wiki/DevOps/GitLab