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dokku/docs/configuration/domains.md
Jose Diaz-Gonzalez cb0f729299 docs: document plugin properties migrated from env vars
Per-plugin management docs now describe the properties introduced by the env-var-to-property migration in PR #8498, and stale prose and command-output examples that still referenced the old `DOKKU_*` names have been refreshed. The deprecated env vars table moves out of `environment-variables.md` and into the 0.38.0 migration guide, where it functions as a one-time pointer for upgrading users rather than ongoing reference material.
2026-04-30 17:02:39 -04:00

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# Domain Configuration
> [!IMPORTANT]
> New as of 0.3.10
```
domains:add <app> <domain> [<domain> ...] # Add domains to app
domains:add-global <domain> [<domain> ...] # Add global domain names
domains:clear <app> # Clear all domains for app
domains:clear-global # Clear global domain names
domains:disable <app> # Disable VHOST support
domains:enable <app> # Enable VHOST support
domains:remove <app> <domain> [<domain> ...] # Remove domains from app
domains:remove-global <domain> [<domain> ...] # Remove global domain names
domains:report [<app>|--global] [<flag>] # Displays a domains report for one or more apps
domains:reset <app> # Reset app domains to global-configured domains
domains:set <app> <domain> [<domain> ...] # Set domains for app
domains:set-global <domain> [<domain> ...] # Set global domain names
```
> Adding a domain before deploying an application will result in port mappings being set. This may cause issues for applications that use non-standard ports, as those will not be automatically detected. Please refer to the [proxy documentation](/docs/networking/proxy-management.md) for information as to how to reconfigure the mappings.
## Customizing hostnames
Applications typically have the following structure for their hostname:
```
scheme://subdomain.domain.tld
```
The `subdomain` is inferred from the pushed application name, while the `domain.tld` is set during initial dokku configuration. It can then be modified with `dokku domains:add-global` and `dokku domains:remove-global`. This value is used as a default TLD for all applications on a host.
If an FQDN such as `dokku.org` is used as the application name, the global virtualhost will be ignored and the resulting vhost URL for that application will be `dokku.org`.
You can optionally override this in a plugin by implementing the `nginx-hostname` plugin trigger. If the `nginx-hostname` plugin has no output, the normal hostname algorithm will be executed. See the [plugin trigger documentation](/docs/development/plugin-triggers.md#nginx-hostname) for more information.
## Enabling and disabling VHOSTS
If desired, it is possible to disable vhosts with the domains plugin.
```shell
dokku domains:disable node-js-app
```
Vhosts can also be disabled for all apps:
```shell
dokku domains:disable --all
```
On subsequent deploys, the nginx virtualhost will be discarded. This is useful when deploying internal-facing services that should not be publicly routeable. As of 0.4.0, nginx will still be configured to proxy your app on some random high port. This allows internal services to maintain the same port between deployments. The non-SSL and SSL ports used can be customized via `dokku proxy:set <app> proxy-port <value>` and `dokku proxy:set <app> proxy-ssl-port <value>` - see the [proxy management documentation](/docs/networking/proxy-management.md#setting-proxy-ports) for details.
To re-enable, run the `domains:enable` subcommand:
```shell
dokku domains:enable node-js-app
dokku domains:enable --all
```
The domains plugin allows you to specify custom domains for applications. This plugin is aware of any ssl certificates that are imported via `certs:add`. Be aware that disabling domains (with `domains:disable`) will override any custom domains.
```shell
# where `node-js-app` is the name of your app
# add a domain to an app
dokku domains:add node-js-app dokku.me
# list custom domains for app
dokku domains:report node-js-app
# clear all custom domains for app
dokku domains:clear node-js-app
# remove a custom domain from app
dokku domains:remove node-js-app dokku.me
# set all custom domains for app
dokku domains:set node-js-app dokku.me dokku.org
# delete all app domains and configure available global domains on it
dokku domains:reset node-js-app
```
## Displaying domains reports for an app
> [!IMPORTANT]
> New as of 0.8.1
You can get a report about the app's domains status using the `domains:report` command:
```shell
dokku domains:report
```
```
=====> node-js-app domains information
Domains app enabled: true
Domains app vhosts: node-js-app.dokku.org
Domains global enabled: true
Domains global vhosts: dokku.org
=====> python-app domains information
Domains app enabled: true
Domains app vhosts: python-app.dokku.org
Domains global enabled: true
Domains global vhosts: dokku.org
=====> ruby-app domains information
Domains app enabled: true
Domains app vhosts: ruby-app.dokku.org
Domains global enabled: true
Domains global vhosts: dokku.org
```
You can run the command for a specific app also.
```shell
dokku domains:report node-js-app
```
```
=====> node-js-app domains information
Domains app enabled: true
Domains app vhosts: node-js-app.dokku.org
Domains global enabled: true
Domains global vhosts: dokku.org
```
You can pass flags which will output only the value of the specific information you want. For example:
```shell
dokku domains:report node-js-app --domains-app-enabled
```
## Default site
This is specific to your proxy plugin of choice. See the [nginx documentation](/docs/networking/proxies/nginx.md#default-site) for more information on how to configure this for the default nginx proxy implementation.