448 lines
25 KiB
Markdown
448 lines
25 KiB
Markdown
---
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stage: none
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group: unassigned
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# GitLab.com settings **(FREE SAAS)**
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This page contains information about the settings that are used on GitLab.com, available to
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[GitLab SaaS](https://about.gitlab.com/pricing/) customers.
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## SSH host keys fingerprints
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Below are the fingerprints for SSH host keys on GitLab.com. The first time you
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connect to a GitLab.com repository, one of these keys is displayed in the output.
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| Algorithm | MD5 (deprecated) | SHA256 |
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|------------------|------------------|---------|
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| ED25519 | `2e:65:6a:c8:cf:bf:b2:8b:9a:bd:6d:9f:11:5c:12:16` | `eUXGGm1YGsMAS7vkcx6JOJdOGHPem5gQp4taiCfCLB8` |
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| RSA | `b6:03:0e:39:97:9e:d0:e7:24:ce:a3:77:3e:01:42:09` | `ROQFvPThGrW4RuWLoL9tq9I9zJ42fK4XywyRtbOz/EQ` |
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| DSA (deprecated) | `7a:47:81:3a:ee:89:89:64:33:ca:44:52:3d:30:d4:87` | `p8vZBUOR0XQz6sYiaWSMLmh0t9i8srqYKool/Xfdfqw` |
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| ECDSA | `f1:d0:fb:46:73:7a:70:92:5a:ab:5d:ef:43:e2:1c:35` | `HbW3g8zUjNSksFbqTiUWPWg2Bq1x8xdGUrliXFzSnUw` |
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## SSH `known_hosts` entries
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Add the following to `.ssh/known_hosts` to skip manual fingerprint
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confirmation in SSH:
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```plaintext
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gitlab.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAfuCHKVTjquxvt6CM6tdG4SLp1Btn/nOeHHE5UOzRdf
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gitlab.com ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCsj2bNKTBSpIYDEGk9KxsGh3mySTRgMtXL583qmBpzeQ+jqCMRgBqB98u3z++J1sKlXHWfM9dyhSevkMwSbhoR8XIq/U0tCNyokEi/ueaBMCvbcTHhO7FcwzY92WK4Yt0aGROY5qX2UKSeOvuP4D6TPqKF1onrSzH9bx9XUf2lEdWT/ia1NEKjunUqu1xOB/StKDHMoX4/OKyIzuS0q/T1zOATthvasJFoPrAjkohTyaDUz2LN5JoH839hViyEG82yB+MjcFV5MU3N1l1QL3cVUCh93xSaua1N85qivl+siMkPGbO5xR/En4iEY6K2XPASUEMaieWVNTRCtJ4S8H+9
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gitlab.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBFSMqzJeV9rUzU4kWitGjeR4PWSa29SPqJ1fVkhtj3Hw9xjLVXVYrU9QlYWrOLXBpQ6KWjbjTDTdDkoohFzgbEY=
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```
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## Mail configuration
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GitLab.com sends emails from the `mg.gitlab.com` domain by using [Mailgun](https://www.mailgun.com/),
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and has its own dedicated IP address (`192.237.158.143`).
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The IP address for `mg.gitlab.com` is subject to change at any time.
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### Service Desk custom mailbox
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On GitLab.com, there's a mailbox configured for Service Desk with the email address:
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`contact-project+%{key}@incoming.gitlab.com`. To use this mailbox, configure the
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[custom suffix](../project/service_desk.md#configuring-a-custom-email-address-suffix) in project
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settings.
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## Backups
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[See our backup strategy](https://about.gitlab.com/handbook/engineering/infrastructure/production/#backups).
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To back up an entire project on GitLab.com, you can export it either:
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- [Through the UI](../project/settings/import_export.md).
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- [Through the API](../../api/project_import_export.md#schedule-an-export). You
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can also use the API to programmatically upload exports to a storage platform,
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such as Amazon S3.
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With exports, be aware of [what is and is not](../project/settings/import_export.md#exported-contents)
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included in a project export.
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GitLab is built on Git, so you can back up just the repository of a project by
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[cloning](../../gitlab-basics/start-using-git.md#clone-a-repository) it to
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another computer.
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Similarly, you can clone a project's wiki to back it up. All files
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[uploaded after August 22, 2020](../project/wiki/index.md#create-a-new-wiki-page)
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are included when cloning.
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## Delayed project deletion **(PREMIUM SAAS)**
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Top-level groups created after August 12, 2021 have delayed project deletion enabled by default.
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Projects are permanently deleted after a seven-day delay.
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You can disable this by changing the [group setting](../group/index.md#enable-delayed-project-removal).
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## Alternative SSH port
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GitLab.com can be reached by using a [different SSH port](https://about.gitlab.com/blog/2016/02/18/gitlab-dot-com-now-supports-an-alternate-git-plus-ssh-port/) for `git+ssh`.
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| Setting | Value |
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|------------|---------------------|
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| `Hostname` | `altssh.gitlab.com` |
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| `Port` | `443` |
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An example `~/.ssh/config` is the following:
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```plaintext
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Host gitlab.com
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Hostname altssh.gitlab.com
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User git
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Port 443
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PreferredAuthentications publickey
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IdentityFile ~/.ssh/gitlab
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```
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## GitLab Pages
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Below are the settings for [GitLab Pages](https://about.gitlab.com/stages-devops-lifecycle/pages/).
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| Setting | GitLab.com | Default |
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|---------------------------|------------------------|------------------------|
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| Domain name | `gitlab.io` | - |
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| IP address | `35.185.44.232` | - |
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| Custom domains support | **{check-circle}** Yes | **{dotted-circle}** No |
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| TLS certificates support | **{check-circle}** Yes | **{dotted-circle}** No |
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| Maximum size (compressed) | 1 GB | 100 MB |
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The maximum size of your Pages site is regulated by the artifacts maximum size,
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which is part of [GitLab CI/CD](#gitlab-cicd).
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## GitLab CI/CD
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Below are the current settings regarding [GitLab CI/CD](../../ci/index.md).
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Any settings or feature limits not listed here are using the defaults listed in
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the related documentation.
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| Setting | GitLab.com | Default |
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|-------------------------------------|-------------|---------|
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| Artifacts maximum size (compressed) | 1 GB | 100 MB |
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| Artifacts [expiry time](../../ci/yaml/index.md#artifactsexpire_in) | From June 22, 2020, deleted after 30 days unless otherwise specified (artifacts created before that date have no expiry). | deleted after 30 days unless otherwise specified |
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| Scheduled Pipeline Cron | `*/5 * * * *` | `3-59/10 * * * *` |
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| [Max jobs in active pipelines](../../administration/instance_limits.md#number-of-jobs-in-active-pipelines) | `500` for Free tier, unlimited otherwise | Unlimited |
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| [Max CI/CD subscriptions to a project](../../administration/instance_limits.md#number-of-cicd-subscriptions-to-a-project) | `2` | Unlimited |
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| [Max pipeline schedules in projects](../../administration/instance_limits.md#number-of-pipeline-schedules) | `10` for Free tier, `50` for all paid tiers | Unlimited |
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| [Scheduled Job Archival](../../user/admin_area/settings/continuous_integration.md#archive-jobs) | 3 months | Never |
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| Max test cases per [unit test report](../../ci/unit_test_reports.md) | `500_000` | Unlimited |
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| [Max registered runners](../../administration/instance_limits.md#number-of-registered-runners-per-scope) | `50` per-project and per-group for Free tier,<br/>`1_000` per-group for all paid tiers / `1_000` per-project for all paid tiers | `1_000` per-group / `1_000` per-project |
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## Account and limit settings
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GitLab.com has the following [account limits](../admin_area/settings/account_and_limit_settings.md)
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enabled. If a setting is not listed, it is set to the default value.
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If you are near or over the repository size limit, you can either
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[reduce your repository size with Git](../project/repository/reducing_the_repo_size_using_git.md) or [purchase additional storage](https://about.gitlab.com/pricing/licensing-faq/#can-i-buy-more-storage).
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| Setting | GitLab.com | Default |
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|-------------------------------|-------------|---------|
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| [Repository size including LFS](../admin_area/settings/account_and_limit_settings.md#repository-size-limit) | 10 GB | Unlimited |
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| Maximum import size | 5 GB | Unlimited ([Modified](https://gitlab.com/gitlab-org/gitlab/-/issues/251106) from 50MB to unlimited in GitLab 13.8.) |
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| Maximum attachment size | 10 MB | 10 MB |
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NOTE:
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`git push` and GitLab project imports are limited to 5 GB per request through
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Cloudflare. Git LFS and imports other than a file upload are not affected by
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this limit.
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## IP range
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GitLab.com uses the IP ranges `34.74.90.64/28` and `34.74.226.0/24` for traffic from its Web/API
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fleet. This whole range is solely allocated to GitLab. You can expect connections from webhooks or repository mirroring to come
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from those IPs and allow them.
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GitLab.com is fronted by Cloudflare. For incoming connections to GitLab.com, you might need to allow CIDR blocks of Cloudflare ([IPv4](https://www.cloudflare.com/ips-v4) and [IPv6](https://www.cloudflare.com/ips-v6)).
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For outgoing connections from CI/CD runners, we are not providing static IP
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addresses. All GitLab.com shared runners are deployed into Google Cloud Platform (GCP). Any
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IP-based firewall can be configured by looking up all
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[IP address ranges or CIDR blocks for GCP](https://cloud.google.com/compute/docs/faq#find_ip_range).
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## Hostname list
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Add these hostnames when you configure allow-lists in local HTTP(S) proxies,
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or other web-blocking software that governs end-user computers. Pages on
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GitLab.com load content from these hostnames:
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- `gitlab.com`
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- `*.gitlab.com`
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- `*.gitlab-static.net`
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- `*.gitlab.io`
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- `*.gitlab.net`
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Documentation and Company pages served over `docs.gitlab.com` and `about.gitlab.com`
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also load certain page content directly from common public CDN hostnames.
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## Webhooks
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The following limits apply for [Webhooks](../project/integrations/webhooks.md):
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| Setting | GitLab.com | Default |
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|----------------------|-------------|---------|
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| [Webhook rate limit](../../administration/instance_limits.md#webhook-rate-limit) | `120` calls per minute for GitLab Free, unlimited for GitLab Premium and GitLab Ultimate | Unlimited |
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| [Number of webhooks](../../administration/instance_limits.md#number-of-webhooks) | `100` per project, `50` per group | `100` per project, `50` per group |
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| Maximum payload size | 25 MB | 25 MB |
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## Shared Build Cloud runners
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GitLab has shared runners on GitLab.com that you can use to run your CI jobs.
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For more information, see [GitLab Build Cloud runners](../../ci/runners/index.md).
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## Sidekiq
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GitLab.com runs [Sidekiq](https://sidekiq.org) with arguments `--timeout=4 --concurrency=4`
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and the following environment variables:
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| Setting | GitLab.com | Default |
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|----------------------------------------|-------------|-----------|
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| `SIDEKIQ_DAEMON_MEMORY_KILLER` | - | `1` |
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| `SIDEKIQ_MEMORY_KILLER_MAX_RSS` | `2000000` | `2000000` |
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| `SIDEKIQ_MEMORY_KILLER_HARD_LIMIT_RSS` | - | - |
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| `SIDEKIQ_MEMORY_KILLER_CHECK_INTERVAL` | - | `3` |
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| `SIDEKIQ_MEMORY_KILLER_GRACE_TIME` | - | `900` |
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| `SIDEKIQ_MEMORY_KILLER_SHUTDOWN_WAIT` | - | `30` |
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| `SIDEKIQ_LOG_ARGUMENTS` | `1` | `1` |
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NOTE:
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The `SIDEKIQ_MEMORY_KILLER_MAX_RSS` setting is `16000000` on Sidekiq import
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nodes and Sidekiq export nodes.
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## PostgreSQL
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GitLab.com being a fairly large installation of GitLab means we have changed
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various PostgreSQL settings to better suit our needs. For example, we use
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streaming replication and servers in hot-standby mode to balance queries across
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different database servers.
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The list of GitLab.com specific settings (and their defaults) is as follows:
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| Setting | GitLab.com | Default |
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|:--------------------------------------|:--------------------------------------------------------------------|:--------------------------------------|
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| `archive_command` | `/usr/bin/envdir /etc/wal-e.d/env /opt/wal-e/bin/wal-e wal-push %p` | empty |
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| `archive_mode` | on | off |
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| `autovacuum_analyze_scale_factor` | 0.01 | 0.01 |
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| `autovacuum_max_workers` | 6 | 3 |
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| `autovacuum_vacuum_cost_limit` | 1000 | -1 |
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| `autovacuum_vacuum_scale_factor` | 0.01 | 0.02 |
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| `checkpoint_completion_target` | 0.7 | 0.9 |
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| `checkpoint_segments` | 32 | 10 |
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| `effective_cache_size` | 338688MB | Based on how much memory is available |
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| `hot_standby` | on | off |
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| `hot_standby_feedback` | on | off |
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| `log_autovacuum_min_duration` | 0 | -1 |
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| `log_checkpoints` | on | off |
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| `log_line_prefix` | `%t [%p]: [%l-1]` | empty |
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| `log_min_duration_statement` | 1000 | -1 |
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| `log_temp_files` | 0 | -1 |
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| `maintenance_work_mem` | 2048MB | 16 MB |
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| `max_replication_slots` | 5 | 0 |
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| `max_wal_senders` | 32 | 0 |
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| `max_wal_size` | 5GB | 1GB |
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| `shared_buffers` | 112896MB | Based on how much memory is available |
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| `shared_preload_libraries` | pg_stat_statements | empty |
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| `shmall` | 30146560 | Based on the server's capabilities |
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| `shmmax` | 123480309760 | Based on the server's capabilities |
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| `wal_buffers` | 16MB | -1 |
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| `wal_keep_segments` | 512 | 10 |
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| `wal_level` | replica | minimal |
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| `statement_timeout` | 15s | 60s |
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| `idle_in_transaction_session_timeout` | 60s | 60s |
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Some of these settings are in the process being adjusted. For example, the value
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for `shared_buffers` is quite high, and we are
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[considering adjusting it](https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/4985).
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## Puma
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GitLab.com uses the default of 60 seconds for [Puma request timeouts](https://docs.gitlab.com/omnibus/settings/puma.html#worker-timeout).
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## GitLab.com-specific rate limits
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NOTE:
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See [Rate limits](../../security/rate_limits.md) for administrator
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documentation.
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When a request is rate limited, GitLab responds with a `429` status
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code. The client should wait before attempting the request again. There
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are also informational headers with this response detailed in [rate
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limiting responses](#rate-limiting-responses).
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The following table describes the rate limits for GitLab.com, both before and
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after the limits change in January, 2021:
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| Rate limit | Before 2021-01-18 | From 2021-01-18 | From 2021-02-12 |
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|:--------------------------------------------------------------------------|:----------------------------|:------------------------------|:------------------------------|
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| **Protected paths** (for a given **IP address**) | **10** requests per minute | **10** requests per minute | **10** requests per minute |
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| **Raw endpoint** traffic (for a given **project, commit, and file path**) | **300** requests per minute | **300** requests per minute | **300** requests per minute |
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| **Unauthenticated** traffic (from a given **IP address**) | No specific limit | **500** requests per minute | **500** requests per minute |
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| **Authenticated** API traffic (for a given **user**) | No specific limit | **2,000** requests per minute | **2,000** requests per minute |
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| **Authenticated** non-API HTTP traffic (for a given **user**) | No specific limit | **1,000** requests per minute | **1,000** requests per minute |
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| **All** traffic (from a given **IP address**) | **600** requests per minute | **2,000** requests per minute | **2,000** requests per minute |
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| **Issue creation** | | **300** requests per minute | **300** requests per minute |
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| **Note creation** (on issues and merge requests) | | **300** requests per minute | **60** requests per minute |
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More details are available on the rate limits for [protected
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paths](#protected-paths-throttle) and [raw
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endpoints](../../user/admin_area/settings/rate_limits_on_raw_endpoints.md).
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### Rate limiting responses
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For information on rate limiting responses, see:
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- [List of headers on responses to blocked requests](../admin_area/settings/user_and_ip_rate_limits.md#response-headers).
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- [Customizable response text](../admin_area/settings/user_and_ip_rate_limits.md#response-text).
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### Protected paths throttle
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GitLab.com responds with HTTP status code `429` to POST requests at protected
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paths that exceed 10 requests per **minute** per IP address.
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See the source below for which paths are protected. This includes user creation,
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user confirmation, user sign in, and password reset.
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[User and IP rate limits](../admin_area/settings/user_and_ip_rate_limits.md#response-headers)
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includes a list of the headers responded to blocked requests.
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See [Protected Paths](../admin_area/settings/protected_paths.md) for more details.
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### IP blocks
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IP blocks can occur when GitLab.com receives unusual traffic from a single
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IP address that the system views as potentially malicious. This can be based on
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rate limit settings. After the unusual traffic ceases, the IP address is
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automatically released depending on the type of block, as described in a
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following section.
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If you receive a `403 Forbidden` error for all requests to GitLab.com,
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check for any automated processes that may be triggering a block. For
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assistance, contact [GitLab Support](https://support.gitlab.com/hc/en-us)
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with details, such as the affected IP address.
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#### Git and container registry failed authentication ban
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GitLab.com responds with HTTP status code `403` for 1 hour, if 30 failed
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authentication requests were received in a 3-minute period from a single IP address.
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This applies only to Git requests and container registry (`/jwt/auth`) requests
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(combined).
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This limit:
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- Is reset by requests that authenticate successfully. For example, 29
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failed authentication requests followed by 1 successful request, followed by
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29 more failed authentication requests would not trigger a ban.
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- Does not apply to JWT requests authenticated by `gitlab-ci-token`.
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No response headers are provided.
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### Pagination response headers
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For performance reasons, if a query returns more than 10,000 records, GitLab
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doesn't return the following headers:
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- `x-total`.
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- `x-total-pages`.
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- `rel="last"` `link`.
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### Visibility settings
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If created before GitLab 12.2 (July 2019), these items have the
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[Internal visibility](../../public_access/public_access.md#internal-projects)
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setting [disabled on GitLab.com](https://gitlab.com/gitlab-org/gitlab/-/issues/12388):
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- Projects
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- Groups
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- Snippets
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### SSH maximum number of connections
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GitLab.com defines the maximum number of concurrent, unauthenticated SSH
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connections by using the [MaxStartups setting](http://man.openbsd.org/sshd_config.5#MaxStartups).
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If more than the maximum number of allowed connections occur concurrently, they
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are dropped and users get
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[an `ssh_exchange_identification` error](../../topics/git/troubleshooting_git.md#ssh_exchange_identification-error).
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### Import/export
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To help avoid abuse, project and group imports, exports, and export downloads
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are rate limited. See [Project import/export rate limits](../../user/project/settings/import_export.md#rate-limits) and [Group import/export rate limits](../../user/group/settings/import_export.md#rate-limits)
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for details.
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### Non-configurable limits
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See [non-configurable limits](../../security/rate_limits.md#non-configurable-limits)
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for information on rate limits that are not configurable, and therefore also
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used on GitLab.com.
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## GitLab.com logging
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We use [Fluentd](https://gitlab.com/gitlab-com/runbooks/tree/master/logging/doc#fluentd)
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to parse our logs. Fluentd sends our logs to
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[Stackdriver Logging](https://gitlab.com/gitlab-com/runbooks/tree/master/logging/doc#stackdriver)
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and [Cloud Pub/Sub](https://gitlab.com/gitlab-com/runbooks/tree/master/logging/doc#cloud-pubsub).
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Stackdriver is used for storing logs long-term in Google Cold Storage (GCS).
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Cloud Pub/Sub is used to forward logs to an [Elastic cluster](https://gitlab.com/gitlab-com/runbooks/tree/master/logging/doc#elastic) using [`pubsubbeat`](https://gitlab.com/gitlab-com/runbooks/tree/master/logging/doc#pubsubbeat-vms).
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You can view more information in our runbooks such as:
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- A [detailed list of what we're logging](https://gitlab.com/gitlab-com/runbooks/-/tree/master/docs/logging#what-are-we-logging)
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- Our [current log retention policies](https://gitlab.com/gitlab-com/runbooks/-/tree/master/docs/logging#retention)
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- A [diagram of our logging infrastructure](https://gitlab.com/gitlab-com/runbooks/-/tree/master/docs/logging#logging-infrastructure-overview)
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### Job logs
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By default, GitLab does not expire job logs. Job logs are retained indefinitely,
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and can't be configured on GitLab.com to expire. You can erase job logs
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[manually with the Jobs API](../../api/jobs.md#erase-a-job) or by
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[deleting a pipeline](../../ci/pipelines/index.md#delete-a-pipeline).
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## GitLab.com at scale
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In addition to the GitLab Enterprise Edition Omnibus install, GitLab.com uses
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the following applications and settings to achieve scale. All settings are
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publicly available at [chef cookbooks](https://gitlab.com/gitlab-cookbooks).
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### Elastic cluster
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We use Elasticsearch and Kibana for part of our monitoring solution:
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- [`gitlab-cookbooks` / `gitlab-elk` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab-elk)
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- [`gitlab-cookbooks` / `gitlab_elasticsearch` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab_elasticsearch)
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### Fluentd
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We use Fluentd to unify our GitLab logs:
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- [`gitlab-cookbooks` / `gitlab_fluentd` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab_fluentd)
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### Prometheus
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Prometheus complete our monitoring stack:
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- [`gitlab-cookbooks` / `gitlab-prometheus` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab-prometheus)
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### Grafana
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For the visualization of monitoring data:
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- [`gitlab-cookbooks` / `gitlab-grafana` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab-grafana)
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### Sentry
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Open source error tracking:
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- [`gitlab-cookbooks` / `gitlab-sentry` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab-sentry)
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### Consul
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Service discovery:
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- [`gitlab-cookbooks` / `gitlab_consul` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab_consul)
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### HAProxy
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High Performance TCP/HTTP Load Balancer:
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- [`gitlab-cookbooks` / `gitlab-haproxy` · GitLab](https://gitlab.com/gitlab-cookbooks/gitlab-haproxy)
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