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Commit ace11ffc authored by Achilleas Pipinellis's avatar Achilleas Pipinellis
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Add configuration steps for the 2,000 reference architecture 

The most notable change is the split of the table reference
in regards to the steps needed to configure the reference.
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doc/administration/reference_architectures/index.md
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......@@ -50,7 +50,8 @@ For different cloud vendors, attempt to select options that best match the provi
## Up to 1,000 users
From 1 to 1,000 users, a [single-node setup with frequent backups](#automated-backups-core-only) is adequate.
> - **Supported users (approximate):** 1,000
> - **High Availability:** False
| Users | Configuration([8](#footnotes)) | GCP type | AWS type([9](#footnotes)) |
|-------|--------------------------------|---------------|---------------------------|
......@@ -58,9 +59,20 @@ From 1 to 1,000 users, a [single-node setup with frequent backups](#automated-ba
| 500 | 4 vCPU, 15GB Memory | n1-standard-4 | m5.xlarge |
| 1000 | 8 vCPU, 30GB Memory | n1-standard-8 | m5.2xlarge |
This solution is appropriate for many teams that have a single server at their disposal. With automatic backup of the GitLab repositories, configuration, and the database, this can be an optimal solution if you don't have strict availability requirements.
For situations where you need to serve up to 1,000 users, a single-node
solution with [frequent backups](#automated-backups-core-only) is appropriate
for many organizations. With automatic backup of the GitLab repositories,
configuration, and the database, if you don't have strict availability
requirements, this is the ideal solution.
For this default reference architecture, use the standard
[installation instructions](../../install/README.md) to install GitLab.
You can also optionally configure GitLab to use an [external PostgreSQL service](../external_database.md) or an [external object storage service](../high_availability/object_storage.md) for added performance and reliability at a relatively low complexity cost.
NOTE: **Note:**
You can also optionally configure GitLab to use an
[external PostgreSQL service](../external_database.md) or an
[external object storage service](../high_availability/object_storage.md) for
added performance and reliability at a reduced complexity cost.
## Up to 2,000 users
......@@ -70,12 +82,32 @@ You can also optionally configure GitLab to use an [external PostgreSQL service]
| Service | Nodes | Configuration ([8](#footnotes)) | GCP type | AWS type ([9](#footnotes)) |
|--------------------------------------------------------------|-------|---------------------------------|---------------|----------------------------|
| GitLab Rails, Sidekiq, Consul ([1](#footnotes)) | 2 | 8 vCPU, 7.2GB Memory | n1-highcpu-8 | c5.2xlarge |
| PostgreSQL | 1 | 2 vCPU, 7.5GB Memory | n1-standard-2 | m5.large |
| Gitaly ([2](#footnotes)) ([5](#footnotes)) ([7](#footnotes)) | X | 4 vCPU, 15GB Memory | n1-standard-4 | m5.xlarge |
| Cloud Object Storage ([4](#footnotes)) | - | - | - | - |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| External load balancing node ([6](#footnotes)) | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Object Storage ([4](#footnotes)) | - | - | - | - |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| PostgreSQL | 1 | 2 vCPU, 7.5GB Memory | n1-standard-2 | m5.large |
| Redis ([3](#footnotes)) | 1 | 1 vCPU, 3.75GB Memory | n1-standard-1 | m5.large |
| Gitaly ([5](#footnotes)) ([7](#footnotes)) | X ([2](#footnotes)) | 4 vCPU, 15GB Memory | n1-standard-4 | m5.xlarge |
| GitLab Rails ([1](#footnotes)) | 2 | 8 vCPU, 7.2GB Memory | n1-highcpu-8 | c5.2xlarge |
| Monitoring node | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
To set up GitLab for up to 2000 users:
1. [Configure the external load balancing node](../high_availability/load_balancer.md)
that will handle the load balancing of the two GitLab application services nodes.
1. [Configure the Object Storage](../object_storage.md) ([4](#footnotes)) used for shared data objects.
1. (Optional) [Configure NFS](../high_availability/nfs.md) to have
shared disk storage service as an alternative to Gitaly and/or
[Object Storage](../object_storage.md) (although not recommended).
NFS is required for GitLab Pages, you can skip this step if you're not using that feature.
1. [Configure PostgreSQL](../high_availability/load_balancer.md), the database for GitLab.
1. [Configure Redis](../high_availability/redis.md).
1. [Configure Gitaly](../gitaly/index.md#running-gitaly-on-its-own-server),
which is used to provide access to the Git repositories.
1. [Configure the main GitLab Rails application](../high_availability/gitlab.md)
to run Puma/Unicorn, Workhorse, GitLab Shell, and to serve all
frontend requests (UI, API, Git over HTTP/SSH).
1. [Configure Prometheus](../high_availability/monitoring_node.md) to monitor your GitLab environment.
## Up to 3,000 users
......@@ -83,9 +115,7 @@ NOTE: **Note:** The 3,000-user reference architecture documented below is
designed to help your organization achieve a highly-available GitLab deployment.
If you do not have the expertise or need to maintain a highly-available
environment, you can have a simpler and less costly-to-operate environment by
deploying two or more GitLab Rails servers, external load balancing, an NFS
server, a PostgreSQL server and a Redis server. A reference architecture with
this alternative in mind is [being worked on](https://gitlab.com/gitlab-org/quality/performance/-/issues/223).
following the [2,000-user reference architecture](#up-to-2000-users).
> - **Supported users (approximate):** 3,000
> - **High Availability:** True
......@@ -100,7 +130,7 @@ this alternative in mind is [being worked on](https://gitlab.com/gitlab-org/qual
| Redis ([3](#footnotes)) | 3 | 2 vCPU, 7.5GB Memory | n1-standard-2 | m5.large |
| Consul + Sentinel ([3](#footnotes)) | 3 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Sidekiq | 4 | 2 vCPU, 7.5GB Memory | n1-standard-2 | m5.large |
| Cloud Object Storage ([4](#footnotes)) | - | - | - | - |
| Object Storage ([4](#footnotes)) | - | - | - | - |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| Monitoring node | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| External load balancing node ([6](#footnotes)) | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
......@@ -121,7 +151,7 @@ this alternative in mind is [being worked on](https://gitlab.com/gitlab-org/qual
| Redis ([3](#footnotes)) | 3 | 2 vCPU, 7.5GB Memory | n1-standard-2 | m5.large |
| Consul + Sentinel ([3](#footnotes)) | 3 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Sidekiq | 4 | 2 vCPU, 7.5GB Memory | n1-standard-2 | m5.large |
| Cloud Object Storage ([4](#footnotes)) | - | - | - | - |
| Object Storage ([4](#footnotes)) | - | - | - | - |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| Monitoring node | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| External load balancing node ([6](#footnotes)) | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
......@@ -145,7 +175,7 @@ this alternative in mind is [being worked on](https://gitlab.com/gitlab-org/qual
| Redis Sentinel ([3](#footnotes)) - Queues / Shared State | 3 | 1 vCPU, 1.7GB Memory | g1-small | t2.small |
| Consul | 3 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Sidekiq | 4 | 4 vCPU, 15GB Memory | n1-standard-4 | m5.xlarge |
| Cloud Object Storage ([4](#footnotes)) | - | - | - | - |
| Object Storage ([4](#footnotes)) | - | - | - | - |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| Monitoring node | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| External load balancing node ([6](#footnotes)) | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
......@@ -169,7 +199,7 @@ this alternative in mind is [being worked on](https://gitlab.com/gitlab-org/qual
| Redis Sentinel ([3](#footnotes)) - Queues / Shared State | 3 | 1 vCPU, 1.7GB Memory | g1-small | t2.small |
| Consul | 3 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Sidekiq | 4 | 4 vCPU, 15GB Memory | n1-standard-4 | m5.xlarge |
| Cloud Object Storage ([4](#footnotes)) | - | - | - | - |
| Object Storage ([4](#footnotes)) | - | - | - | - |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| Monitoring node | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| External load balancing node ([6](#footnotes)) | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
......@@ -194,7 +224,7 @@ this alternative in mind is [being worked on](https://gitlab.com/gitlab-org/qual
| Consul | 3 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Sidekiq | 4 | 4 vCPU, 15GB Memory | n1-standard-4 | m5.xlarge |
| NFS Server ([5](#footnotes)) ([7](#footnotes)) | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| Cloud Object Storage ([4](#footnotes)) | - | - | - | - |
| Object Storage ([4](#footnotes)) | - | - | - | - |
| Monitoring node | 1 | 4 vCPU, 3.6GB Memory | n1-highcpu-4 | c5.xlarge |
| External load balancing node ([6](#footnotes)) | 1 | 2 vCPU, 1.8GB Memory | n1-highcpu-2 | c5.large |
| Internal load balancing node ([6](#footnotes)) | 1 | 8 vCPU, 7.2GB Memory | n1-highcpu-8 | c5.2xlarge |
......@@ -286,7 +316,7 @@ column.
| Component | Description | Configuration instructions | Bundled with Omnibus GitLab |
|-----------|-------------|----------------------------|
| Load balancer(s) ([6](#footnotes)) | Handles load balancing, typically when you have multiple GitLab application services nodes | [Load balancer configuration](../high_availability/load_balancer.md) ([6](#footnotes)) | No |
| Object storage service ([4](#footnotes)) | Recommended store for shared data objects | [Cloud Object Storage configuration](../object_storage.md) | No |
| Object storage service ([4](#footnotes)) | Recommended store for shared data objects | [Object Storage configuration](../object_storage.md) | No |
| NFS ([5](#footnotes)) ([7](#footnotes)) | Shared disk storage service. Can be used as an alternative for Gitaly or Object Storage. Required for GitLab Pages | [NFS configuration](../high_availability/nfs.md) | No |
| [Consul](../../development/architecture.md#consul) ([3](#footnotes)) | Service discovery and health checks/failover | [Consul HA configuration](../high_availability/consul.md) **(PREMIUM ONLY)** | Yes |
| [PostgreSQL](../../development/architecture.md#postgresql) | Database | [PostgreSQL configuration](https://docs.gitlab.com/omnibus/settings/database.html) | Yes |
......@@ -316,14 +346,15 @@ column.
with a review of expected data size and spread based on the recommendations above.
1. Recommended Redis setup differs depending on the size of the architecture.
For smaller architectures (less than 5,000 users), we suggest one Redis cluster for all
For smaller architectures (less than 3,000 users) a single instance should suffice.
For medium sized installs (3,000 - 5,000) we suggest one Redis cluster for all
classes and that Redis Sentinel is hosted alongside Consul.
For larger architectures (10,000 users or more) we suggest running a separate
[Redis Cluster](../high_availability/redis.md#running-multiple-redis-clusters) for the Cache class
and another for the Queues and Shared State classes respectively. We also recommend
that you run the Redis Sentinel clusters separately for each Redis Cluster.
1. For data objects such as LFS, Uploads, Artifacts, etc. We recommend a [Cloud Object Storage service](../object_storage.md)
1. For data objects such as LFS, Uploads, Artifacts, etc. We recommend an [Object Storage service](../object_storage.md)
over NFS where possible, due to better performance and availability.
1. NFS can be used as an alternative for both repository data (replacing Gitaly) and
......
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