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Diffstat (limited to 'doc/administration/high_availability/load_balancer.md')
| -rw-r--r-- | doc/administration/high_availability/load_balancer.md | 71 |
1 files changed, 43 insertions, 28 deletions
diff --git a/doc/administration/high_availability/load_balancer.md b/doc/administration/high_availability/load_balancer.md index 28b226cacd5..f11d27487d1 100644 --- a/doc/administration/high_availability/load_balancer.md +++ b/doc/administration/high_availability/load_balancer.md @@ -1,3 +1,7 @@ +--- +type: reference +--- + # Load Balancer for GitLab HA In an active/active GitLab configuration, you will need a load balancer to route @@ -56,11 +60,21 @@ for details on managing SSL certificates and configuring Nginx. ### Basic ports -| LB Port | Backend Port | Protocol | -| ------- | ------------ | --------------- | -| 80 | 80 | HTTP [^1] | -| 443 | 443 | TCP or HTTPS [^1] [^2] | -| 22 | 22 | TCP | +| LB Port | Backend Port | Protocol | +| ------- | ------------ | ------------------------ | +| 80 | 80 | HTTP (*1*) | +| 443 | 443 | TCP or HTTPS (*1*) (*2*) | +| 22 | 22 | TCP | + +- (*1*): [Web terminal](../../ci/environments.md#web-terminals) 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. ### GitLab Pages Ports @@ -68,12 +82,19 @@ 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][gitlab-pages] for more information. +[GitLab Pages documentation](../pages/index.md) for more information. -| LB Port | Backend Port | Protocol | -| ------- | ------------ | -------- | -| 80 | Varies [^3] | HTTP | -| 443 | Varies [^3] | TCP [^4] | +| 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 @@ -82,7 +103,7 @@ 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. +Configure DNS for an alternate SSH hostname such as `altssh.gitlab.example.com`. | LB Port | Backend Port | Protocol | | ------- | ------------ | -------- | @@ -97,20 +118,14 @@ Read more on high-availability configuration: 1. [Configure NFS](nfs.md) 1. [Configure the GitLab application servers](gitlab.md) -[^1]: [Web terminal](../../ci/environments.md#web-terminals) 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. -[^3]: The backend port for GitLab Pages depends on the - `gitlab_pages['external_http']` and `gitlab_pages['external_https']` - setting. See [GitLab Pages documentation][gitlab-pages] for more details. -[^4]: 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. - -[gitlab-pages]: ../pages/index.md +<!-- ## Troubleshooting + +Include any troubleshooting steps that you can foresee. If you know beforehand what issues +one might have when setting this up, or when something is changed, or on upgrading, it's +important to describe those, too. Think of things that may go wrong and include them here. +This is important to minimize requests for support, and to avoid doc comments with +questions that you know someone might ask. + +Each scenario can be a third-level heading, e.g. `### Getting error message X`. +If you have none to add when creating a doc, leave this section in place +but commented out to help encourage others to add to it in the future. --> |