Merge branch 'jl-architecture-mermaid-docs' into 'master'
Update component diagram, switch to mermaid See merge request gitlab-org/gitlab-ce!27780
This commit is contained in:
Achilleas Pipinellis
commit
f0ff33d8bf
1 changed files with 146 additions and 2 deletions
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@ -210,12 +210,156 @@ To serve repositories over SSH there's an add-on application called gitlab-shell
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### Components
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### Components
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<img src="https://docs.google.com/drawings/d/1fBzAyklyveF-i-2q-OHUIqDkYfjjxC4mq5shwKSZHLs/pub?w=987&h=797">
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```mermaid
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graph TB
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_[edit diagram (for GitLab team members only)](https://docs.google.com/drawings/d/1fBzAyklyveF-i-2q-OHUIqDkYfjjxC4mq5shwKSZHLs/edit)_
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HTTP[HTTP/HTTPS] -- TCP 80, 443 --> NGINX(NGINX)
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SSH --TCP 22 --> GitLabShell(GitLab Shell)
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SMTP(SMTP Gateway)
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Geo(GitLab Geo Node) -- TCP 22, 80, 443 --> NGINX
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subgraph GitLab
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GitLabShell --TCP 8080 -->Unicorn["Unicorn (GitLab Rails)"]
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GitLabShell --> Gitaly
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GitLabShell --> Redis
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Unicorn --> PgBouncer(PgBouncer)
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Unicorn --> Redis
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Unicorn --> Gitaly
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Redis --> Sidekiq
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Sidekiq("Sidekiq (GitLab Rails, ES Indexer)") --> PgBouncer
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GitLabWorkhorse(GitLab Workhorse) --> Unicorn
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GitLabWorkhorse --> Redis
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GitLabWorkhorse --> Gitaly
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Gitaly --> Redis
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NGINX --> GitLabWorkhorse
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NGINX -- TCP 8090 --> GitLabPages(GitLab Pages)
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NGINX --> Grafana(Grafana)
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Grafana -- TCP 9090 --> Prometheus(Prometheus)
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Prometheus -- TCP 80, 443 --> Unicorn
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RedisExporter(Redis Exporter) --> Redis
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Prometheus -- TCP 9121 --> RedisExporter
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PostgreSQLExporter(PostgreSQL Exporter) --> PostgreSQL
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PgBouncerExporter(PgBouncer Exporter) --> PgBouncer
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Prometheus -- TCP 9187 --> PostgreSQLExporter
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Prometheus -- TCP 9100 --> NodeExporter(Node Exporter)
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Prometheus -- TCP 9168 --> GitLabMonitor(GitLab Monitor)
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Prometheus -- TCP 9127 --> PgBouncerExporter
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GitLabMonitor --> PostgreSQL
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GitLabMonitor --> GitLabShell
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GitLabMonitor --> Sidekiq
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PgBouncer --> Consul(Consul)
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PostgreSQL --> Consul
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PgBouncer --> PostgreSQL
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NGINX --> Registry(Registry)
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Unicorn --> Registry
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NGINX --> Mattermost(Mattermost)
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Mattermost --- Unicorn
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Prometheus --> Alertmanager
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Migrations --> PostgreSQL
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Runner(Runner) --> NGINX
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Unicorn -- TCP 9200 --> ElasticSearch
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Sidekiq -- TCP 9200 --> ElasticSearch
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Sidekiq -- TCP 80, 443 --> Sentry
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Unicorn -- TCP 80, 443 --> Sentry
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Sidekiq -- UDP 6831 --> Jaeger
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Unicorn -- UDP 6831 --> Jaeger
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Gitaly -- UDP 6831 --> Jaeger
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GitLabShell -- UDP 6831 --> Jaeger
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GitLabWorkhorse -- UDP 6831 --> Jaeger
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Alertmanager -- TCP 25 --> SMTP
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Sidekiq -- TCP 25 --> SMTP
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Unicorn -- TCP 25 --> SMTP
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Unicorn -- TCP 369 --> LDAP
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Sidekiq -- TCP 369 --> LDAP
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Unicorn -- TCP 443 --> ObjectStorage("Object Storage")
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Sidekiq -- TCP 443 --> ObjectStorage
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GitLabWorkhorse -- TCP 443 --> ObjectStorage
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Registry -- TCP 443 --> ObjectStorage
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Geo -- TCP 5432 --> PostgreSQL
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end
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HTTPK8s(HTTP/HTTPS) -- TCP 80, 443 --> LoadBalancerK8s(Load Balancer)
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LoadBalancerK8s -- TCP 80, 443 --> nginx-ingressK8s
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subgraph Kubernetes
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PrometheusK8s(Prometheus)
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TillerK8s(Tiller)
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nginx-ingressK8s(NGINX Ingress)
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Cert-ManagerK8s(Cert-Manager)
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GitLabRunnerK8s(GitLab Runner)
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GitLabRunnerK8s --> NGINX
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JupyterHubK8s(JupyterHub)
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nginx-ingressK8s --> JupyterHubK8s
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KnativeK8s(Knative)
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end
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classDef defaultoff stroke-dasharray: 5, 5
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class ElasticSearch defaultoff
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class Grafana defaultoff
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class PrometheusK8s defaultoff
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class TillerK8s defaultoff
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class nginx-ingressK8s defaultoff
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class Cert-ManagerK8s defaultoff
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class GitLabRunnerK8s defaultoff
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class JupyterHubK8s defaultoff
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class KnativeK8s defaultoff
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class HTTPK8s defaultoff
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class LoadBalancerK8s defaultoff
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class Sentry defaultoff
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class Jaeger defaultoff
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class Alertmanager defaultoff
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class SMTP defaultoff
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class ObjectStorage defaultoff
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class Geo defaultoff
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```
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**Legend**:
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* ✅ - Automatically configured
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* ⚙ - Requires additional configuration
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* ⤓ - Additional software/service required
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* ❌ - Not available
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||||||
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| Component | Description | [Omnibus GitLab](https://docs.gitlab.com/omnibus/README.html) | [GitLab chart](https://docs.gitlab.com/charts/) | [Minikube Minimal](https://docs.gitlab.com/charts/development/minikube/#deploying-gitlab-with-minimal-settings) | [GitLab.com](https://gitlab.com) | CE/EE |
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| --------- | ----------- |:--------------------:|:------------------:|:-----:|:--------:|:--------:|
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| NGINX | Routes requests to appropriate components, terminates SSL | [✅](https://docs.gitlab.com/omnibus/settings/nginx.html) | [✅](https://docs.gitlab.com/charts/charts/nginx/index.html) | [⚙](https://docs.gitlab.com/charts/charts/nginx/index.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#service-architecture) |CE & EE |
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| Unicorn (GitLab Rails) | Handles requests for the web interface and API | [✅](https://docs.gitlab.com/omnibus/settings/unicorn.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/unicorn/index.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/unicorn/index.html) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#unicorn) | CE & EE |
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| Sidekiq | Background jobs processor | [✅](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-config-template/gitlab.rb.template) | [✅](https://docs.gitlab.com/charts/charts/gitlab/sidekiq/index.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/sidekiq/index.html) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#sidekiq) | CE & EE |
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| Gitaly | Git RPC service for handling all git calls made by GitLab | [✅](https://docs.gitlab.com/ee/administration/gitaly/) | [✅](https://docs.gitlab.com/charts/charts/gitlab/gitaly/index.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/gitaly/index.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#service-architecture) | CE & EE |
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||||||
|
| GitLab Workhorse | Smart reverse proxy, handles large HTTP requests | [✅](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-config-template/gitlab.rb.template) | [✅](https://docs.gitlab.com/charts/charts/gitlab/unicorn/index.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/unicorn/index.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#service-architecture) | CE & EE |
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| GitLab Shell | Handles `git` over SSH sessions | [✅](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-config-template/gitlab.rb.template) | [✅](https://docs.gitlab.com/charts/charts/gitlab/gitlab-shell/index.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/gitlab-shell/index.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#service-architecture) | CE & EE |
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| GitLab Pages | Hosts static websites | [⚙](https://docs.gitlab.com/ee/administration/pages/) | [❌](https://gitlab.com/charts/gitlab/issues/37) | [❌](https://gitlab.com/charts/gitlab/issues/37) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#gitlab-pages) | CE & EE |
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| Registry | Container registry, allows pushing and pulling of images | [⚙](https://docs.gitlab.com/ee/administration/container_registry.html#container-registry-domain-configuration) | [✅](https://docs.gitlab.com/charts/charts/registry/index.html) | [✅](https://docs.gitlab.com/charts/charts/registry/index.html) | [✅](https://docs.gitlab.com/ee/user/project/container_registry.html#build-and-push-images) | CE & EE |
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| Redis | Caching service | [✅](https://docs.gitlab.com/omnibus/settings/redis.html) | [✅](https://docs.gitlab.com/charts/charts/redis/index.html) | [✅](https://docs.gitlab.com/charts/charts/redis/index.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#service-architecture) | CE & EE |
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| PostgreSQL | Database | [✅](https://docs.gitlab.com/omnibus/settings/database.html) | [✅](https://github.com/helm/charts/tree/master/stable/postgresql) | [✅](https://github.com/helm/charts/tree/master/stable/postgresql) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#postgresql) | CE & EE |
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| PgBouncer | Database connection pooling, failover | [⚙](https://docs.gitlab.com/ee/administration/high_availability/pgbouncer.html) | [❌](https://docs.gitlab.com/charts/installation/deployment.html#postgresql) | [❌](https://docs.gitlab.com/charts/installation/deployment.html#postgresql) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#database-architecture) | EE Only |
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| Consul | Database node discovery, failover | [⚙](https://docs.gitlab.com/ee/administration/high_availability/consul.html) | [❌](https://docs.gitlab.com/charts/installation/deployment.html#postgresql) | [❌](https://docs.gitlab.com/charts/installation/deployment.html#postgresql) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#consul) | EE Only |
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| Prometheus | Time-series database, metrics collection, and query service | [✅](https://docs.gitlab.com/ee/administration/monitoring/prometheus/) | [✅](https://github.com/helm/charts/tree/master/stable/prometheus) | [⚙](https://github.com/helm/charts/tree/master/stable/prometheus) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#prometheus) | CE & EE |
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| Prometheus Alertmanager | Deduplicates, groups, and routes alerts from Prometheus | [✅](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-config-template/gitlab.rb.template) | [✅](https://github.com/helm/charts/tree/master/stable/prometheus) | [✅](https://github.com/helm/charts/tree/master/stable/prometheus) | [✅](https://about.gitlab.com/handbook/engineering/monitoring/) | CE & EE |
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| Grafana | Metrics dashboard | [⚙](https://docs.gitlab.com/ee/administration/monitoring/performance/grafana_configuration.html) | [⤓](https://github.com/helm/charts/tree/master/stable/grafana) | [⤓](https://github.com/helm/charts/tree/master/stable/grafana) | [✅](https://dashboards.gitlab.com/d/RZmbBr7mk/gitlab-triage?refresh=30s) | CE & EE |
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|
| Redis Exporter | Prometheus endpoint with Redis metrics | [✅](https://docs.gitlab.com/ee/administration/monitoring/prometheus/redis_exporter.html) | [✅](https://docs.gitlab.com/charts/charts/redis/index.html) | [✅](https://docs.gitlab.com/charts/charts/redis/index.html) | [✅](https://about.gitlab.com/handbook/engineering/monitoring/) | CE & EE |
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|
| PostgreSQL Exporter | Prometheus endpoint with PostgreSQL metrics | [✅](https://docs.gitlab.com/ee/administration/monitoring/prometheus/postgres_exporter.html) | [✅](https://github.com/helm/charts/tree/master/stable/postgresql) | [✅](https://github.com/helm/charts/tree/master/stable/postgresql) | [✅](https://about.gitlab.com/handbook/engineering/monitoring/) | CE & EE |
|
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|
| PgBouncer Exporter | Prometheus endpoint with PgBouncer metrics | [⚙](https://docs.gitlab.com/ee/administration/monitoring/prometheus/pgbouncer_exporter.html) | [❌](https://docs.gitlab.com/charts/installation/deployment.html#postgresql) | [❌](https://docs.gitlab.com/charts/installation/deployment.html#postgresql) | [✅](https://about.gitlab.com/handbook/engineering/monitoring/) | CE & EE |
|
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|
| GitLab Monitor | Tracks a variety of GitLab metrics | [✅](https://docs.gitlab.com/ee/administration/monitoring/prometheus/gitlab_monitor_exporter.html) | [❌](https://gitlab.com/charts/gitlab/issues/319) | [❌](https://gitlab.com/charts/gitlab/issues/319) | [✅](https://about.gitlab.com/handbook/engineering/monitoring/) | CE & EE |
|
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|
| Mattermost | Open-source Slack alternative | [⚙](https://docs.gitlab.com/omnibus/gitlab-mattermost/) | [⤓](https://docs.mattermost.com/install/install-mmte-helm-gitlab-helm.html) | [⤓](https://docs.mattermost.com/install/install-mmte-helm-gitlab-helm.html) | [⤓](https://docs.gitlab.com/ee/user/project/integrations/mattermost_slash_commands.html#manual-configuration), [⤓](https://docs.gitlab.com/ee/user/project/integrations/mattermost.html) | CE & EE |
|
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|
| Minio | Object storage service | [⤓](https://min.io/download) | [✅](https://docs.gitlab.com/charts/charts/minio/index.html) | [✅](https://docs.gitlab.com/charts/charts/minio/index.html) | [❌](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#storage-architecture) | CE & EE |
|
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|
| Runner | Executes GitLab CI jobs | [⤓](https://docs.gitlab.com/runner/) | [✅](https://docs.gitlab.com/runner/) | [⚙](https://docs.gitlab.com/runner/) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#shared-runners) | CE & EE |
|
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|
| Migrations | Database migrations | [✅](https://docs.gitlab.com/omnibus/settings/database.html#disabling-automatic-database-migration) | [✅](https://docs.gitlab.com/charts/charts/gitlab/migrations/index.html) | [✅](https://docs.gitlab.com/charts/charts/gitlab/migrations/index.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#database-architecture) | CE & EE |
|
||||||
|
| Certificate Management | TLS Settings, Let's Encrypt | [✅](https://docs.gitlab.com/omnibus/settings/ssl.html) | [✅](https://docs.gitlab.com/charts/installation/tls.html) | [⚙](https://docs.gitlab.com/charts/installation/tls.html) | [✅](https://about.gitlab.com/handbook/engineering/infrastructure/production-architecture/#secrets-management) | CE & EE |
|
||||||
|
| GitLab Geo Node | Geographically distributed GitLab nodes | [⚙](https://docs.gitlab.com/ee/administration/geo/replication/index.html#setup-instructions) | [❌](https://gitlab.com/charts/gitlab/issues/8) | [❌](https://gitlab.com/charts/gitlab/issues/8) | ✅ | EE Only |
|
||||||
|
| LDAP Authentication | Authenticate users against centralized LDAP directory | [⤓](https://docs.gitlab.com/ee/administration/auth/ldap.html) | [⤓](https://docs.gitlab.com/charts/charts/globals.html#ldap) | [⤓](https://docs.gitlab.com/charts/charts/globals.html#ldap) | [❌](https://about.gitlab.com/pricing/#gitlab-com) | CE & EE |
|
||||||
|
| Outbound email (SMTP) | Send email messages to users | [⤓](https://docs.gitlab.com/omnibus/settings/smtp.html) | [⤓](https://docs.gitlab.com/charts/installation/command-line-options.html#outgoing-email-configuration) | [⤓](https://docs.gitlab.com/charts/installation/command-line-options.html#outgoing-email-configuration) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#mail-configuration) | CE & EE |
|
||||||
|
| Inbound email (SMTP) | Receive messages to update issues | [⤓](https://docs.gitlab.com/ee/administration/incoming_email.html) | [⤓](https://docs.gitlab.com/charts/installation/command-line-options.html#incoming-email-configuration) | [⤓](https://docs.gitlab.com/charts/installation/command-line-options.html#incoming-email-configuration) | [✅](https://docs.gitlab.com/ee/user/gitlab_com/#mail-configuration) | CE & EE |
|
||||||
|
| ElasticSearch | Improved search within GitLab | [⤓](https://docs.gitlab.com/ee/integration/elasticsearch.html) | [⤓](https://docs.gitlab.com/ee/integration/elasticsearch.html) | [⤓](https://docs.gitlab.com/ee/integration/elasticsearch.html) | [❌](https://gitlab.com/groups/gitlab-org/-/epics/153) | EE Only |
|
||||||
|
| Sentry: GitLab instance | Tracking errors generated by the GitLab instance | [⤓](https://docs.gitlab.com/omnibus/settings/configuration.html#error-reporting-and-logging-with-sentry) | [❌](https://gitlab.com/charts/gitlab/issues/1319) | [❌](https://gitlab.com/charts/gitlab/issues/1319) | [✅](https://about.gitlab.com/handbook/support/workflows/services/gitlab_com/500_errors.html#searching-sentry) | CE & EE |
|
||||||
|
| Jaeger: GitLab instance | View traces generated by the GitLab instance | [❌](https://gitlab.com/gitlab-org/omnibus-gitlab/issues/4104) | [❌](https://gitlab.com/charts/gitlab/issues/1320) | [❌](https://gitlab.com/charts/gitlab/issues/1320) | [❌](https://gitlab.com/gitlab-org/omnibus-gitlab/issues/4104) | CE & EE |
|
||||||
|
| Sentry: deployed apps | Error tracking for deployed apps | [⤓](https://docs.gitlab.com/ee/user/project/operations/error_tracking.html) | [⤓](https://docs.gitlab.com/ee/user/project/operations/error_tracking.html) | [⤓](https://docs.gitlab.com/ee/user/project/operations/error_tracking.html) | [⤓](https://docs.gitlab.com/ee/user/project/operations/error_tracking.html) | CE & EE |
|
||||||
|
| Jaeger: deployed apps | Distributed tracing for deployed apps | [⤓](https://docs.gitlab.com/ee/user/project/operations/tracing.html) | [⤓](https://docs.gitlab.com/ee/user/project/operations/tracing.html) | [⤓](https://docs.gitlab.com/ee/user/project/operations/tracing.html) | [⤓](https://docs.gitlab.com/ee/user/project/operations/tracing.html) | EE Only |
|
||||||
|
| Kubernetes cluster apps | Deploy [Helm](https://docs.helm.sh/), [Ingress](https://kubernetes.io/docs/concepts/services-networking/ingress/), [Cert-Manager](https://docs.cert-manager.io/en/latest/), [Prometheus](https://prometheus.io/docs/introduction/overview/), a [Runner](https://docs.gitlab.com/runner/), [JupyterHub](http://jupyter.org/), [Knative](https://cloud.google.com/knative) to a cluster | [⤓](https://docs.gitlab.com/ee/user/project/clusters/#installing-applications) | [⤓](https://docs.gitlab.com/ee/user/project/clusters/#installing-applications) | [⤓](https://docs.gitlab.com/ee/user/project/clusters/#installing-applications) | [⤓](https://docs.gitlab.com/ee/user/project/clusters/#installing-applications) | CE & EE |
|
||||||
|
|
||||||
A typical install of GitLab will be on GNU/Linux. It uses Nginx or Apache as a web front end to proxypass the Unicorn web server. By default, communication between Unicorn and the front end is via a Unix domain socket but forwarding requests via TCP is also supported. The web front end accesses `/home/git/gitlab/public` bypassing the Unicorn server to serve static pages, uploads (e.g. avatar images or attachments), and precompiled assets. GitLab serves web pages and a [GitLab API](https://gitlab.com/gitlab-org/gitlab-ce/tree/master/doc/api) using the Unicorn web server. It uses Sidekiq as a job queue which, in turn, uses redis as a non-persistent database backend for job information, meta data, and incoming jobs.
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A typical install of GitLab will be on GNU/Linux. It uses Nginx or Apache as a web front end to proxypass the Unicorn web server. By default, communication between Unicorn and the front end is via a Unix domain socket but forwarding requests via TCP is also supported. The web front end accesses `/home/git/gitlab/public` bypassing the Unicorn server to serve static pages, uploads (e.g. avatar images or attachments), and precompiled assets. GitLab serves web pages and a [GitLab API](https://gitlab.com/gitlab-org/gitlab-ce/tree/master/doc/api) using the Unicorn web server. It uses Sidekiq as a job queue which, in turn, uses redis as a non-persistent database backend for job information, meta data, and incoming jobs.
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We also support deploying GitLab on Kubernetes using our [gitlab Helm chart](https://docs.gitlab.com/charts/).
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The GitLab web app uses MySQL or PostgreSQL for persistent database information (e.g. users, permissions, issues, other meta data). GitLab stores the bare git repositories it serves in `/home/git/repositories` by default. It also keeps default branch and hook information with the bare repository.
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The GitLab web app uses MySQL or PostgreSQL for persistent database information (e.g. users, permissions, issues, other meta data). GitLab stores the bare git repositories it serves in `/home/git/repositories` by default. It also keeps default branch and hook information with the bare repository.
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When serving repositories over HTTP/HTTPS GitLab utilizes the GitLab API to resolve authorization and access as well as serving git objects.
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When serving repositories over HTTP/HTTPS GitLab utilizes the GitLab API to resolve authorization and access as well as serving git objects.
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