computer-playbook/roles/web-app-gitlab

GitLab

Description

Accelerate your development with GitLab, an all-in-one platform for source code management, CI/CD, and more. Experience a robust and collaborative environment that empowers your development process.

Overview

This role deploys GitLab from the official Cloud Native GitLab (CNG) CE images at registry.gitlab.com/gitlab-org/build/cng/ as separate services: webservice (puma), sidekiq, workhorse (sole HTTP entry point), gitaly, shell (gitlab-sshd) and a one-shot migrations job. All images share a single version pin (services.webservice.version). PostgreSQL, Redis and S3-compatible object storage are wired through the platform lookups (central or sidecar), OIDC and SMTP through the platform SSO and email services. The front proxy terminates TLS and forwards HTTP to workhorse.

Cosmos

The diagram places GitLab in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph deps [Dependencies]
        dep_svc_bkp_volume_2_local["svc-bkp-volume-2-local 💻"]
        dep_svc_db_postgres["svc-db-postgres 🐳🐝"]
        dep_svc_db_redis["svc-db-redis 🐳🐝"]
        dep_web_app_dashboard["web-app-dashboard 🐳🐝"]
        dep_web_app_keycloak["web-app-keycloak 🐳🐝"]
        dep_web_app_mailu["web-app-mailu 🐳🐝"]
        dep_web_app_matomo["web-app-matomo 🐳🐝"]
        dep_web_app_prometheus["web-app-prometheus 🐳🐝"]
        dep_web_app_seaweedfs["web-app-seaweedfs 🐳🐝"]
        dep_web_svc_css["web-svc-css 💻"]
        dep_web_svc_logout["web-svc-logout 🐳🐝"]
    end
    subgraph role [web-app-gitlab 🐳🐝]
        svc_sso["sso"]
        svc_logout["logout"]
        svc_dashboard["dashboard"]
        svc_matomo["matomo"]
        svc_email["email"]
        svc_redis["redis"]
        svc_postgres["postgres"]
        svc_gitlab["gitlab"]
        svc_webservice["webservice"]
        svc_sidekiq["sidekiq"]
        svc_workhorse["workhorse"]
        svc_gitaly["gitaly"]
        svc_shell["shell"]
        svc_migrations["migrations"]
        svc_seaweedfs["seaweedfs"]
        svc_css["css"]
        svc_prometheus["prometheus"]
        svc_container_backup["container_backup"]
    end
    subgraph dependents [Dependents]
        dpt_web_app_nextcloud["web-app-nextcloud 🐳🐝"]
    end
    dep_svc_bkp_volume_2_local -. "0..1" .-> svc_container_backup
    dep_svc_db_postgres -. "0..1" .-> svc_postgres
    dep_svc_db_redis -. "0..1" .-> svc_redis
    dep_web_app_dashboard -. "0..1" .-> svc_dashboard
    dep_web_app_keycloak -. "0..1" .-> svc_sso
    dep_web_app_mailu -. "0..1" .-> svc_email
    dep_web_app_matomo -. "0..1" .-> svc_matomo
    dep_web_app_prometheus -. "0..1" .-> svc_prometheus
    dep_web_app_seaweedfs -. "0..1" .-> svc_seaweedfs
    dep_web_svc_css -. "0..1" .-> svc_css
    dep_web_svc_logout -. "0..1" .-> svc_logout
    svc_sso -. "0..1" .-> dpt_web_app_nextcloud

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments). Node markers show the role's deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Features

• CNG multi-service deployment: webservice, sidekiq, workhorse, gitaly, gitlab-shell and a migrations one-shot from unmodified upstream images.
• External/central PostgreSQL and Redis: rails database.yml, resque.yml, cable.yml and the workhorse config are pre-rendered by Ansible and mounted read-only.
• Consolidated object storage: artifacts, LFS, uploads, packages, external diffs, dependency proxy, terraform state, CI secure files and pages buckets on any S3-compatible endpoint; named volumes (gitlab_shared, gitlab_uploads, gitlab_builds) carry the data when object storage is disabled.
• OIDC single sign-on and SMTP: rendered into gitlab.yml and an smtp_settings.rb initializer.
• Git over SSH: gitlab-sshd on the public SSH port with role-generated host keys under <instance>/config/hostkeys/. Back up that directory: it is not part of any named volume, and a host rebuild or instance purge regenerates the keys, so every git client then sees a host-key-changed warning until it re-trusts the new key.

Quick Setup

Development

Clone, set up the workstation, and deploy GitLab onto the local stack:

git clone https://github.com/infinito-nexus/core.git
cd core
make onboard
make compose-deploy mode=reinstall apps=web-app-gitlab full_cycle=false

Production

Run the published image to provision the inventory and deploy GitLab to a managed server (the mounted volume persists the inventory):

APP=web-app-gitlab
HOST=<your-server>
TLS_MODE=self_signed
SSH_PUBLIC_KEY="<your-ssh-public-key>"

docker run --rm -it \
  -v "$PWD/inventories:/etc/infinito.nexus/inventories" \
  -e APP="$APP" -e HOST="$HOST" -e TLS_MODE="$TLS_MODE" -e SSH_PUBLIC_KEY="$SSH_PUBLIC_KEY" \
  ghcr.io/infinito-nexus/core/debian bash -c '
    INVENTORY=/etc/infinito.nexus/inventories/production
    infinito administration inventory provision "$INVENTORY" \
      --inventory-file "$INVENTORY/devices.yml" \
      --host "$HOST" \
      --include "$APP" \
      --vars "{\"TLS_MODE\": \"$TLS_MODE\", \"users\": {\"administrator\": {\"authorized_keys\": [\"$SSH_PUBLIC_KEY\"]}}}" &&
    infinito administration deploy dedicated "$INVENTORY/devices.yml" \
      --password-file "$INVENTORY/.password" \
      --diff -vv'

Fresh installs only

The role provisions new GitLab instances. Volumes, secrets and backups of a pre-CNG Omnibus deployment (gitlab_config, gitlab_data, /etc/gitlab/gitlab-secrets.json) are not migrated or restorable into the CNG layout; deploy against a fresh database and empty volumes.

Gitaly data locality

The gitlab_repositories volume is declared nfs: false, so in swarm mode it stays a plain node-local volume instead of being rewritten to the shared NFS backend. Gitaly is pinned to a single replica. When a swarm reschedule moves the gitaly task to another node, the repositories stay on the previous node's local volume; move the volume data manually before rescheduling gitaly.

Upgrades

On each version bump of services.webservice.version:

1. Follow the upstream upgrade path stops between the old and new version; the migrations one-shot fails hard on skipped stops.
2. Diff the CNG repo dev/ config templates (webservice-config, sidekiq-config, workhorse-config, shell-config, gitaly-config) between the two tags and mirror schema changes into templates/config/.

Omissions

• kas (Kubernetes agent server, workspaces), pages, registry and mailroom are not deployed; gitlab.yml disables them.
• Images are the CE edition (gitlab-webservice-ce, gitlab-sidekiq-ce, gitlab-workhorse-ce, gitlab-rails-ce); switch the image keys in meta/services.yml to the -ee variants for an EE deployment.

Further Resources

• GitLab Official Website
• Cloud Native GitLab (CNG) images
• GitLab Helm charts documentation

Credits

Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).