--- stage: Systems group: Distribution info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments --- # Reference architecture: up to 2,000 users **(FREE SELF)** This page describes the GitLab reference architecture designed for the load of up to 2,000 users with notable headroom (non-HA). For a full list of reference architectures, see [Available reference architectures](index.md#available-reference-architectures). > - **Target Load:** API: 40 RPS, Web: 4 RPS, Git (Pull): 4 RPS, Git (Push): 1 RPS > - **High Availability:** No. For a highly-available environment, you can > follow a modified [3K reference architecture](3k_users.md#supported-modifications-for-lower-user-counts-ha). > - **Estimated Costs:** [See cost table](index.md#cost-to-run) > - **Cloud Native Hybrid:** [Yes](#cloud-native-hybrid-reference-architecture-with-helm-charts-alternative) > - **Unsure which Reference Architecture to use?** [Go to this guide for more info](index.md#deciding-which-architecture-to-use). | Service | Nodes | Configuration | GCP | AWS | Azure | |----------------------------|-------|------------------------|-----------------|--------------|----------| | Load balancer3 | 1 | 2 vCPU, 1.8 GB memory | `n1-highcpu-2` | `c5.large` | `F2s v2` | | PostgreSQL1 | 1 | 2 vCPU, 7.5 GB memory | `n1-standard-2` | `m5.large` | `D2s v3` | | Redis2 | 1 | 1 vCPU, 3.75 GB memory | `n1-standard-1` | `m5.large` | `D2s v3` | | Gitaly | 1 | 4 vCPU, 15 GB memory5 | `n1-standard-4` | `m5.xlarge` | `D4s v3` | | Sidekiq6 | 1 | 4 vCPU, 15 GB memory | `n1-standard-4` | `m5.xlarge` | `D4s v3` | | GitLab Rails6 | 2 | 8 vCPU, 7.2 GB memory | `n1-highcpu-8` | `c5.2xlarge` | `F8s v2` | | Monitoring node | 1 | 2 vCPU, 1.8 GB memory | `n1-highcpu-2` | `c5.large` | `F2s v2` | | Object storage4 | - | - | - | - | - | 1. Can be optionally run on reputable third-party external PaaS PostgreSQL solutions. See [Provide your own PostgreSQL instance](#provide-your-own-postgresql-instance) and [Recommended cloud providers and services](index.md#recommended-cloud-providers-and-services) for more information. 2. Can be optionally run on reputable third-party external PaaS Redis solutions. See [Provide your own Redis instance](#provide-your-own-redis-instance) and [Recommended cloud providers and services](index.md#recommended-cloud-providers-and-services) for more information. 3. Can be optionally run on reputable third-party load balancing services (LB PaaS). See [Recommended cloud providers and services](index.md#recommended-cloud-providers-and-services) for more information. 4. Should be run on reputable Cloud Provider or Self Managed solutions. See [Configure the object storage](#configure-the-object-storage) for more information. 4. Should be run on reputable Cloud Provider or Self Managed solutions. More information can be found in the [Configure the object storage](#configure-the-object-storage) section. 5. Gitaly specifications are based on the use of normal-sized repositories in good health. However, if you have large monorepos (larger than several gigabytes) this can **significantly** impact Git and Gitaly performance and an increase of specifications will likely be required. Refer to [large monorepos](index.md#large-monorepos) for more information. 6. Can be placed in Auto Scaling Groups (ASGs) as the component doesn't store any [stateful data](index.md#autoscaling-of-stateful-nodes). However, for GitLab Rails certain processes like [migrations](#gitlab-rails-post-configuration) and [Mailroom](../incoming_email.md) should be run on only one node. NOTE: For all PaaS solutions that involve configuring instances, it's recommended to deploy them over multiple availability zones for resilience if desired. ```plantuml @startuml 2k skinparam linetype ortho card "**External Load Balancer**" as elb #6a9be7 collections "**GitLab Rails** x3" as gitlab #32CD32 card "**Prometheus**" as monitor #7FFFD4 card "**Gitaly**" as gitaly #FF8C00 card "**PostgreSQL**" as postgres #4EA7FF card "**Redis**" as redis #FF6347 cloud "**Object Storage**" as object_storage #white elb -[#6a9be7]-> gitlab elb -[#6a9be7]--> monitor gitlab -[#32CD32]--> gitaly gitlab -[#32CD32]--> postgres gitlab -[#32CD32]-> object_storage gitlab -[#32CD32]--> redis monitor .[#7FFFD4]u-> gitlab monitor .[#7FFFD4]-> gitaly monitor .[#7FFFD4]-> postgres monitor .[#7FFFD4,norank]--> redis monitor .[#7FFFD4,norank]u--> elb @enduml ``` ## Requirements Before starting, see the [requirements](index.md#requirements) for reference architectures. ## Testing methodology The 2k architecture is designed to cover a large majority of workflows and is regularly [smoke and performance tested](index.md#validation-and-test-results) by the Quality Engineering team against the following endpoint throughput targets: - API: 40 RPS - Web: 4 RPS - Git (Pull): 4 RPS - Git (Push): 1 RPS The above targets were selected based on real customer data of total environmental loads corresponding to the user count, including CI and other workloads along with additional substantial headroom added. If you have metrics to suggest that you have regularly higher throughput against the above endpoint targets, [large monorepos](index.md#large-monorepos) or notable [additional workloads](index.md#additional-workloads) these can notably impact the performance environment and [further adjustments may be required](index.md#scaling-an-environment). If this applies to you, we strongly recommended referring to the linked documentation as well as reaching out to your [Customer Success Manager](https://handbook.gitlab.com/job-families/sales/customer-success-management/) or our [Support team](https://about.gitlab.com/support/) for further guidance. Testing is done regularly via our [GitLab Performance Tool (GPT)](https://gitlab.com/gitlab-org/quality/performance) and its dataset, which is available for anyone to use. The results of this testing are [available publicly on the GPT wiki](https://gitlab.com/gitlab-org/quality/performance/-/wikis/Benchmarks/Latest). For more information on our testing strategy [refer to this section of the documentation](index.md#validation-and-test-results). ## Setup components To set up GitLab and its components to accommodate up to 2,000 users: 1. [Configure the external load balancing node](#configure-the-external-load-balancer) to handle the load balancing of the GitLab application services nodes. 1. [Configure PostgreSQL](#configure-postgresql), the database for GitLab. 1. [Configure Redis](#configure-redis). 1. [Configure Gitaly](#configure-gitaly), which provides access to the Git repositories. 1. [Configure the main GitLab Rails application](#configure-gitlab-rails) to run Puma, Workhorse, GitLab Shell, and to serve all frontend requests (which include UI, API, and Git over HTTP/SSH). 1. [Configure Prometheus](#configure-prometheus) to monitor your GitLab environment. 1. [Configure the object storage](#configure-the-object-storage) used for shared data objects. 1. [Configure advanced search](#configure-advanced-search) (optional) for faster, more advanced code search across your entire GitLab instance. ## Configure the external load balancer In a multi-node GitLab configuration, you'll need a load balancer to route traffic to the application servers. The specifics on which load balancer to use or its exact configuration is beyond the scope of GitLab documentation. We assume that if you're managing multi-node systems like GitLab, you already have a load balancer of choice. Some load balancer examples include HAProxy (open-source), F5 Big-IP LTM, and Citrix Net Scaler. This documentation outline the ports and protocols needed for use with GitLab. This architecture has been tested and validated with [HAProxy](https://www.haproxy.org/) as the load balancer. Although other load balancers with similar feature sets could also be used, those load balancers have not been validated. The next question is how you will handle SSL in your environment. There are several different options: - [The application node terminates SSL](#application-node-terminates-ssl). - [The load balancer terminates SSL without backend SSL](#load-balancer-terminates-ssl-without-backend-ssl) and communication is not secure between the load balancer and the application node. - [The load balancer terminates SSL with backend SSL](#load-balancer-terminates-ssl-with-backend-ssl) and communication is *secure* between the load balancer and the application node. ### Balancing algorithm We recommend that a least-connection load balancing algorithm or equivalent is used wherever possible to ensure equal spread of calls to the nodes and good performance. We don't recommend the use of round-robin algorithms as they are known to not spread connections equally in practice. ### Readiness checks Ensure the external load balancer only routes to working services with built in monitoring endpoints. The [readiness checks](../monitoring/health_check.md) all require [additional configuration](../monitoring/ip_allowlist.md) on the nodes being checked, otherwise, the external load balancer will not be able to connect. ### Ports The basic ports to be used are shown in the table below. | LB Port | Backend Port | Protocol | | ------- | ------------ | ------------------------ | | 80 | 80 | HTTP (*1*) | | 443 | 443 | TCP or HTTPS (*1*) (*2*) | | 22 | 22 | TCP | - (*1*): [Web terminal](../../ci/environments/index.md#web-terminals-deprecated) support requires your load balancer to correctly handle WebSocket connections. When using HTTP or HTTPS proxying, this means your load balancer must be configured to pass through the `Connection` and `Upgrade` hop-by-hop headers. See the [web terminal](../integration/terminal.md) integration guide for more details. - (*2*): When using HTTPS protocol for port 443, you will need to add an SSL certificate to the load balancers. If you wish to terminate SSL at the GitLab application server instead, use TCP protocol. If you're using GitLab Pages with custom domain support you will need some additional port configurations. GitLab Pages requires a separate virtual IP address. Configure DNS to point the `pages_external_url` from `/etc/gitlab/gitlab.rb` at the new virtual IP address. See the [GitLab Pages documentation](../pages/index.md) for more information. | LB Port | Backend Port | Protocol | | ------- | ------------- | --------- | | 80 | Varies (*1*) | HTTP | | 443 | Varies (*1*) | TCP (*2*) | - (*1*): The backend port for GitLab Pages depends on the `gitlab_pages['external_http']` and `gitlab_pages['external_https']` setting. See [GitLab Pages documentation](../pages/index.md) for more details. - (*2*): Port 443 for GitLab Pages should always use the TCP protocol. Users can configure custom domains with custom SSL, which would not be possible if SSL was terminated at the load balancer. #### Alternate SSH Port Some organizations have policies against opening SSH port 22. In this case, it may be helpful to configure an alternate SSH hostname that allows users to use SSH on port 443. An alternate SSH hostname will require a new virtual IP address compared to the other GitLab HTTP configuration above. Configure DNS for an alternate SSH hostname such as `altssh.gitlab.example.com`. | LB Port | Backend Port | Protocol | | ------- | ------------ | -------- | | 443 | 22 | TCP | ### SSL The next question is how you will handle SSL in your environment. There are several different options: - [The application node terminates SSL](#application-node-terminates-ssl). - [The load balancer terminates SSL without backend SSL](#load-balancer-terminates-ssl-without-backend-ssl) and communication is not secure between the load balancer and the application node. - [The load balancer terminates SSL with backend SSL](#load-balancer-terminates-ssl-with-backend-ssl) and communication is *secure* between the load balancer and the application node. #### Application node terminates SSL Configure your load balancer to pass connections on port 443 as `TCP` rather than `HTTP(S)` protocol. This will pass the connection to the application node's NGINX service untouched. NGINX will have the SSL certificate and listen on port 443. See the [HTTPS documentation](https://docs.gitlab.com/omnibus/settings/ssl/index.html) for details on managing SSL certificates and configuring NGINX. #### Load balancer terminates SSL without backend SSL Configure your load balancer to use the `HTTP(S)` protocol rather than `TCP`. The load balancer will then be responsible for managing SSL certificates and terminating SSL. Since communication between the load balancer and GitLab will not be secure, there is some additional configuration needed. See the [proxied SSL documentation](https://docs.gitlab.com/omnibus/settings/ssl/index.html#configure-a-reverse-proxy-or-load-balancer-ssl-termination) for details. #### Load balancer terminates SSL with backend SSL Configure your load balancers to use the 'HTTP(S)' protocol rather than 'TCP'. The load balancers will be responsible for managing SSL certificates that end users will see. Traffic will also be secure between the load balancers and NGINX in this scenario. There is no need to add configuration for proxied SSL since the connection will be secure all the way. However, configuration will need to be added to GitLab to configure SSL certificates. See the [HTTPS documentation](https://docs.gitlab.com/omnibus/settings/ssl/index.html) for details on managing SSL certificates and configuring NGINX.
## Configure PostgreSQL In this section, you'll be guided through configuring an external PostgreSQL database to be used with GitLab. ### Provide your own PostgreSQL instance You can optionally use a [third party external service for PostgreSQL](../../administration/postgresql/external.md). A reputable provider or solution should be used for this. [Google Cloud SQL](https://cloud.google.com/sql/docs/postgres/high-availability#normal) and [Amazon RDS](https://aws.amazon.com/rds/) are known to work. However, Amazon Aurora is **incompatible** with load balancing enabled by default from [14.4.0](../../update/versions/gitlab_14_changes.md#1440). See [Recommended cloud providers and services](index.md#recommended-cloud-providers-and-services) for more information. If you use a third party external service: 1. Note that the HA Linux package PostgreSQL setup encompasses PostgreSQL, PgBouncer and Consul. All of these components would no longer be required when using a third party external service. 1. Set up PostgreSQL according to the [database requirements document](../../install/requirements.md#database). 1. Set up a `gitlab` username with a password of your choice. The `gitlab` user needs privileges to create the `gitlabhq_production` database. 1. Configure the GitLab application servers with the appropriate details. This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails). ### Standalone PostgreSQL using the Linux package 1. SSH in to the PostgreSQL server. 1. [Download and install](https://about.gitlab.com/install/) the Linux package of your choice. Be sure to follow _only_ installation steps 1 and 2 on the page. 1. Generate a password hash for PostgreSQL. This assumes you will use the default username of `gitlab` (recommended). The command will request a password and confirmation. Use the value that is output by this command in the next step as the value of `POSTGRESQL_PASSWORD_HASH`. ```shell sudo gitlab-ctl pg-password-md5 gitlab ``` 1. Edit `/etc/gitlab/gitlab.rb` and add the contents below, updating placeholder values appropriately. - `POSTGRESQL_PASSWORD_HASH` - The value output from the previous step - `APPLICATION_SERVER_IP_BLOCKS` - A space delimited list of IP subnets or IP addresses of the GitLab application servers that will connect to the database. Example: `%w(123.123.123.123/32 123.123.123.234/32)` ```ruby # Disable all components except PostgreSQL related ones roles(['postgres_role']) # Set the network addresses that the exporters used for monitoring will listen on node_exporter['listen_address'] = '0.0.0.0:9100' postgres_exporter['listen_address'] = '0.0.0.0:9187' postgres_exporter['dbname'] = 'gitlabhq_production' postgres_exporter['password'] = 'POSTGRESQL_PASSWORD_HASH' # Set the PostgreSQL address and port postgresql['listen_address'] = '0.0.0.0' postgresql['port'] = 5432 # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value postgresql['sql_user_password'] = 'POSTGRESQL_PASSWORD_HASH' # Replace APPLICATION_SERVER_IP_BLOCK with the CIDR address of the application node postgresql['trust_auth_cidr_addresses'] = %w(127.0.0.1/32 APPLICATION_SERVER_IP_BLOCK) # Prevent database migrations from running on upgrade automatically gitlab_rails['auto_migrate'] = false ``` 1. Copy the `/etc/gitlab/gitlab-secrets.json` file from the first Linux package node you configured and add or replace the file of the same name on this server. If this is the first Linux package you are configuring then you can skip this step. 1. [Reconfigure GitLab](../restart_gitlab.md#reconfigure-a-linux-package-installation) for the changes to take effect. 1. Note the PostgreSQL node's IP address or hostname, port, and plain text password. These will be necessary when configuring the [GitLab application server](#configure-gitlab-rails) later. Advanced [configuration options](https://docs.gitlab.com/omnibus/settings/database.html) are supported and can be added if needed. ## Configure Redis In this section, you'll be guided through configuring an external Redis instance to be used with GitLab. ### Provide your own Redis instance You can optionally use a [third party external service for the Redis instance](../redis/replication_and_failover_external.md#redis-as-a-managed-service-in-a-cloud-provider) with the following guidance: - A reputable provider or solution should be used for this. [Google Memorystore](https://cloud.google.com/memorystore/docs/redis/redis-overview) and [AWS ElastiCache](https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/WhatIs.html) are known to work. - Redis Cluster mode is specifically not supported, but Redis Standalone with HA is. For more information, see [Recommended cloud providers and services](index.md#recommended-cloud-providers-and-services). ### Standalone Redis using the Linux package The Linux package can be used to configure a standalone Redis server. The steps below are the minimum necessary to configure a Redis server with the Linux package: 1. SSH in to the Redis server. 1. [Download and install](https://about.gitlab.com/install/) the Linux package of your choice. Be sure to follow _only_ installation steps 1 and 2 on the page. 1. Edit `/etc/gitlab/gitlab.rb` and add the contents: ```ruby ## Enable Redis roles(["redis_master_role"]) redis['bind'] = '0.0.0.0' redis['port'] = 6379 redis['password'] = 'SECRET_PASSWORD_HERE' gitlab_rails['enable'] = false # Set the network addresses that the exporters used for monitoring will listen on node_exporter['listen_address'] = '0.0.0.0:9100' redis_exporter['listen_address'] = '0.0.0.0:9121' redis_exporter['flags'] = { 'redis.addr' => 'redis://0.0.0.0:6379', 'redis.password' => 'SECRET_PASSWORD_HERE', } ``` 1. Copy the `/etc/gitlab/gitlab-secrets.json` file from the first Linux package node you configured and add or replace the file of the same name on this server. If this is the first Linux package node you are configuring then you can skip this step. 1. [Reconfigure GitLab](../restart_gitlab.md#reconfigure-a-linux-package-installation) for the changes to take effect. 1. Note the Redis node's IP address or hostname, port, and Redis password. These will be necessary when [configuring the GitLab application servers](#configure-gitlab-rails) later. Advanced [configuration options](https://docs.gitlab.com/omnibus/settings/redis.html) are supported and can be added if needed. ## Configure Gitaly [Gitaly](../gitaly/index.md) server node requirements are dependent on data size, specifically the number of projects and those projects' sizes. WARNING: **Gitaly specifications are based on high percentiles of both usage patterns and repository sizes in good health.** **However, if you have [large monorepos](index.md#large-monorepos) (larger than several gigabytes) or [additional workloads](index.md#additional-workloads) these can *significantly* impact the performance of the environment and further adjustments may be required.** If this applies to you, we strongly recommended referring to the linked documentation as well as reaching out to your [Customer Success Manager](https://handbook.gitlab.com/job-families/sales/customer-success-management/) or our [Support team](https://about.gitlab.com/support/) for further guidance. Due to Gitaly having notable input and output requirements, we strongly recommend that all Gitaly nodes use solid-state drives (SSDs). These SSDs should have a throughput of at least 8,000 input/output operations per second (IOPS) for read operations and 2,000 IOPS for write operations. If you're running the environment on a Cloud provider, refer to their documentation about how to configure IOPS correctly. Be sure to note the following items: - The GitLab Rails application shards repositories into [repository storage paths](../repository_storage_paths.md). - A Gitaly server can host one or more storage paths. - A GitLab server can use one or more Gitaly server nodes. - Gitaly addresses must be specified to be correctly resolvable for *all* Gitaly clients. - Gitaly servers must not be exposed to the public internet, as Gitaly's network traffic is unencrypted by default. The use of a firewall is highly recommended to restrict access to the Gitaly server. Another option is to [use TLS](#gitaly-tls-support). NOTE: The token referred to throughout the Gitaly documentation is an arbitrary password selected by the administrator. This token is unrelated to tokens created for the GitLab API or other similar web API tokens. The following procedure describes how to configure a single Gitaly server named `gitaly1.internal` with the secret token `gitalysecret`. We assume your GitLab installation has two repository storages: `default` and `storage1`. To configure the Gitaly server, on the server node you want to use for Gitaly: 1. [Download and install](https://about.gitlab.com/install/) the Linux package package of your choice. Be sure to follow _only_ installation steps 1 and 2 on the page, and _do not_ provide the `EXTERNAL_URL` value. 1. Edit the Gitaly server node's `/etc/gitlab/gitlab.rb` file to configure storage paths, enable the network listener, and to configure the token: NOTE: You can't remove the `default` entry from `gitaly['configuration'][:storage]` because [GitLab requires it](../gitaly/configure_gitaly.md#gitlab-requires-a-default-repository-storage). ```ruby # Avoid running unnecessary services on the Gitaly server postgresql['enable'] = false redis['enable'] = false nginx['enable'] = false puma['enable'] = false sidekiq['enable'] = false gitlab_workhorse['enable'] = false prometheus['enable'] = false alertmanager['enable'] = false gitlab_exporter['enable'] = false gitlab_kas['enable'] = false # Prevent database migrations from running on upgrade automatically gitlab_rails['auto_migrate'] = false # Configure the gitlab-shell API callback URL. Without this, `git push` will # fail. This can be your 'front door' GitLab URL or an internal load # balancer. gitlab_rails['internal_api_url'] = 'https://gitlab.example.com' # Gitaly gitaly['enable'] = true # The secret token is used for authentication callbacks from Gitaly to the GitLab internal API. # This must match the respective value in GitLab Rails application setup. gitlab_shell['secret_token'] = 'shellsecret' # Set the network addresses that the exporters used for monitoring will listen on node_exporter['listen_address'] = '0.0.0.0:9100' gitaly['configuration'] = { # ... # # Make Gitaly accept connections on all network interfaces. You must use # firewalls to restrict access to this address/port. # Comment out following line if you only want to support TLS connections listen_addr: '0.0.0.0:8075', prometheus_listen_addr: '0.0.0.0:9236', # Gitaly Auth Token # Should be the same as praefect_internal_token auth: { # ... # # Gitaly's authentication token is used to authenticate gRPC requests to Gitaly. This must match # the respective value in GitLab Rails application setup. token: 'gitalysecret', }, # Gitaly Pack-objects cache # Recommended to be enabled for improved performance but can notably increase disk I/O # Refer to https://docs.gitlab.com/ee/administration/gitaly/configure_gitaly.html#pack-objects-cache for more info pack_objects_cache: { # ... enabled: true, }, storage: [ { name: 'default', path: '/var/opt/gitlab/git-data', }, { name: 'storage1', path: '/mnt/gitlab/git-data', }, ], } ``` 1. Copy the `/etc/gitlab/gitlab-secrets.json` file from the first Linux package node you configured and add or replace the file of the same name on this server. If this is the first Linux package node you are configuring then you can skip this step. 1. [Reconfigure GitLab](../restart_gitlab.md#reconfigure-a-linux-package-installation) for the changes to take effect. 1. Confirm that Gitaly can perform callbacks to the internal API: - For GitLab 15.3 and later, run `sudo /opt/gitlab/embedded/bin/gitaly check /var/opt/gitlab/gitaly/config.toml`. - For GitLab 15.2 and earlier, run `sudo /opt/gitlab/embedded/bin/gitaly-hooks check /var/opt/gitlab/gitaly/config.toml`. ### Gitaly TLS support Gitaly supports TLS encryption. To be able to communicate with a Gitaly instance that listens for secure connections you will need to use `tls://` URL scheme in the `gitaly_address` of the corresponding storage entry in the GitLab configuration. You will need to bring your own certificates as this isn't provided automatically. The certificate, or its certificate authority, must be installed on all Gitaly nodes (including the Gitaly node using the certificate) and on all client nodes that communicate with it following the procedure described in [GitLab custom certificate configuration](https://docs.gitlab.com/omnibus/settings/ssl/index.html#install-custom-public-certificates). NOTE: The self-signed certificate must specify the address you use to access the Gitaly server. If you are addressing the Gitaly server by a hostname, add it as a Subject Alternative Name. If you are addressing the Gitaly server by its IP address, you must add it as a Subject Alternative Name to the certificate. It's possible to configure Gitaly servers with both an unencrypted listening address (`listen_addr`) and an encrypted listening address (`tls_listen_addr`) at the same time. This allows you to do a gradual transition from unencrypted to encrypted traffic, if necessary. To configure Gitaly with TLS: 1. Create the `/etc/gitlab/ssl` directory and copy your key and certificate there: ```shell sudo mkdir -p /etc/gitlab/ssl sudo chmod 755 /etc/gitlab/ssl sudo cp key.pem cert.pem /etc/gitlab/ssl/ sudo chmod 644 key.pem cert.pem ``` 1. Copy the cert to `/etc/gitlab/trusted-certs` so Gitaly will trust the cert when calling into itself: ```shell sudo cp /etc/gitlab/ssl/cert.pem /etc/gitlab/trusted-certs/ ``` 1. Edit `/etc/gitlab/gitlab.rb` and add: ```ruby gitaly['configuration'] = { # ... tls_listen_addr: '0.0.0.0:9999', tls: { certificate_path: '/etc/gitlab/ssl/cert.pem', key_path: '/etc/gitlab/ssl/key.pem', }, } ``` 1. Delete `gitaly['listen_addr']` to allow only encrypted connections. 1. Save the file and [reconfigure GitLab](../restart_gitlab.md#reconfigure-a-linux-package-installation). ## Configure Sidekiq Sidekiq requires connection to the [Redis](#configure-redis), [PostgreSQL](#configure-postgresql) and [Gitaly](#configure-gitaly) instances. It also requires a connection to [Object Storage](#configure-the-object-storage) as recommended. To configure the Sidekiq server, on the server node you want to use for Sidekiq: 1. SSH in to the Sidekiq server. 1. [Download and install](https://about.gitlab.com/install/) the Linux package of your choice. Be sure to follow _only_ installation steps 1 and 2 on the page. 1. Create or edit `/etc/gitlab/gitlab.rb` and use the following configuration: ```ruby # https://docs.gitlab.com/omnibus/roles/#sidekiq-roles roles(["sidekiq_role"]) # External URL external_url 'https://gitlab.example.com' ## Redis connection details gitlab_rails['redis_port'] = '6379' gitlab_rails['redis_host'] = '10.1.0.6' # IP/hostname of Redis server gitlab_rails['redis_password'] = 'Redis Password' # Gitaly and GitLab use two shared secrets for authentication, one to authenticate gRPC requests # to Gitaly, and a second for authentication callbacks from GitLab-Shell to the GitLab internal API. # The following two values must be the same as their respective values # of the Gitaly setup gitlab_rails['gitaly_token'] = 'gitalysecret' gitlab_shell['secret_token'] = 'shellsecret' git_data_dirs({ 'default' => { 'gitaly_address' => 'tcp://gitaly1.internal:8075' }, 'storage1' => { 'gitaly_address' => 'tcp://gitaly1.internal:8075' }, 'storage2' => { 'gitaly_address' => 'tcp://gitaly2.internal:8075' }, }) ## PostgreSQL connection details gitlab_rails['db_adapter'] = 'postgresql' gitlab_rails['db_encoding'] = 'unicode' gitlab_rails['db_host'] = '10.1.0.5' # IP/hostname of database server gitlab_rails['db_password'] = 'DB password' ## Prevent database migrations from running on upgrade automatically gitlab_rails['auto_migrate'] = false # Sidekiq sidekiq['enable'] = true sidekiq['listen_address'] = "0.0.0.0" ## Set number of Sidekiq queue processes to the same number as available CPUs sidekiq['queue_groups'] = ['*'] * 4 ## Set number of Sidekiq threads per queue process to the recommend number of 20 sidekiq['max_concurrency'] = 20 ## Set the network addresses that the exporters will listen on node_exporter['listen_address'] = '0.0.0.0:9100' # Object Storage ## This is an example for configuring Object Storage on GCP ## Replace this config with your chosen Object Storage provider as desired gitlab_rails['object_store']['enabled'] = true gitlab_rails['object_store']['connection'] = { 'provider' => 'Google', 'google_project' => '