{"id":98,"date":"2025-11-30T16:28:20","date_gmt":"2025-11-30T16:28:20","guid":{"rendered":"https:\/\/adler-tech.com\/?page_id=98"},"modified":"2026-04-13T12:55:02","modified_gmt":"2026-04-13T11:55:02","slug":"gitlab-installation-configuration","status":"publish","type":"page","link":"https:\/\/adler-tech.com\/?page_id=98","title":{"rendered":"GitLab Installation & Configuration"},"content":{"rendered":"\n

2 days<\/strong> (16 hours total)<\/p>\n\n\n\n

\n\n\n\n

<\/h1>\n\n\n\n

Day 1 \u2013 Architecture, Installation, Core Configuration<\/strong><\/h2>\n\n\n\n

1. GitLab Architecture<\/strong><\/h3>\n\n\n\n

Components: Rails app, Workhorse, Gitaly, Redis, PostgreSQL, Sidekiq.
Omnibus vs source install. Backup model. Runner ecosystem.<\/p>\n\n\n\n

2. System Requirements & Pre-Install Checks<\/strong><\/h3>\n\n\n\n

OS choice (Ubuntu preferred), CPU\/RAM\/storage needs, open ports, SSH setup, FQDN, certificates, firewall.<\/p>\n\n\n\n

3. GitLab Installation (Omnibus)<\/strong><\/h3>\n\n\n\n

Package repos, installing omnibus, reconfiguring, first admin login, directory structure, \/etc\/gitlab\/gitlab.rb<\/code>.<\/p>\n\n\n\n

4. GitLab External Services<\/strong><\/h3>\n\n\n\n

PostgreSQL tuning (basic), Redis role, object storage backend (S3, GCS), SMTP settings, time sync.<\/p>\n\n\n\n

5. User & Group Management<\/strong><\/h3>\n\n\n\n

User registration settings, groups vs subgroups, permissions, roles, access model.<\/p>\n\n\n\n

6. Project Configuration<\/strong><\/h3>\n\n\n\n

Repositories, mirroring, branches, push rules, LFS, protected branches, tags.<\/p>\n\n\n\n

7. Backup & Restore<\/strong><\/h3>\n\n\n\n

Omnibus backup commands, artifacts backup, registry backup, external S3 backups, restore workflow.<\/p>\n\n\n\n

\n\n\n\n

Day 2 \u2013 CI\/CD, Runners, Security, Monitoring & Upgrades<\/strong><\/h2>\n\n\n\n

8. GitLab Runners (Core Administration)<\/strong><\/h3>\n\n\n\n

Shell, Docker, Kubernetes runners, shared vs specific, concurrency, autoscaling basics.<\/p>\n\n\n\n

9. CI\/CD Configuration<\/strong><\/h3>\n\n\n\n

Pipelines overview, .gitlab-ci.yml<\/code> structure, runners assignment, variables, secrets, caching.<\/p>\n\n\n\n

10. Registry & Package Registry<\/strong><\/h3>\n\n\n\n

Container registry setup, authentication, retention, Package Registry for artifacts, cleanup policies.<\/p>\n\n\n\n

11. HTTPS & TLS Configuration<\/strong><\/h3>\n\n\n\n

Let\u2019s Encrypt integration, external certs, reverse proxy mode (NGINX external), HSTS, TLS hardening.<\/p>\n\n\n\n

12. Security & Access Controls<\/strong><\/h3>\n\n\n\n

SSH key management, deploy keys, deploy tokens, 2FA, SSO\/SAML overview, audit logs.<\/p>\n\n\n\n

13. Monitoring<\/strong><\/h3>\n\n\n\n

Built-in Prometheus exporters, metrics browsing, Sidekiq queue health, logging structure, slow request hunting.<\/p>\n\n\n\n

14. Upgrades & Maintenance<\/strong><\/h3>\n\n\n\n

Safe upgrade path, package channels, zero-downtime migrations basics, rake checks, trimming old data.<\/p>\n\n\n\n

15. Integration with External Services<\/strong><\/h3>\n\n\n\n

Webhook events, Jira integration, email notifications, LDAP\/AD integration (high-level), OAuth apps.<\/p>\n","protected":false},"excerpt":{"rendered":"

2 days (16 hours total) Day 1 \u2013 Architecture, Installation, Core Configuration 1. GitLab Architecture Components: Rails app, Workhorse, Gitaly, Redis, PostgreSQL, Sidekiq.Omnibus vs source install. Backup model. Runner ecosystem. 2. System Requirements & Pre-Install Checks OS choice (Ubuntu preferred), CPU\/RAM\/storage needs, open ports, SSH setup, FQDN, certificates, firewall. 3. GitLab Installation (Omnibus) Package repos, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":96,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-98","page","type-page","status-publish","hentry"],"yoast_head":"\nGitLab Installation & Configuration - ADLER-TECH<\/title>\n<meta name=\"description\" content=\"Initial installation and configuration of Gitlab. 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