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
• wwikipedia:Comparison_of_source-code-hosting_facilities
• git: [config | init | status ], git add, git rm, git commit, git push, git pull, .gitconfig, .gitignore, git (clone, fetch, pull), git tag, git log, git blame, Merge Request, LFS, git branch, git apply, git rebase, git diff, git diff-tree, git config --global, remote | submodule | request-pull, GIT_TRACE, GIT_CURL_VERBOSE, clean, main, git show-ref, git reset, git prune, git ls-remote origin, git checkout, git switch, pathspec, git credential-osxkeychain, git version, pre-commit, git --help, GitBook, refs/, Git Credential Manager, git diff-index
• JFrog Artifactory

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