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add docs for network interface binding logic

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Michael Hobbs
2015-01-05 16:28:48 -08:00
parent 441d212ef2
commit f1827a86a4
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docs/nginx.md
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@@ -136,3 +136,25 @@ dokku domains:clear myapp
# remove a custom domain from app
dokku domains:remove myapp example.com
```
### Container network interface binding
> New as of 0.3.13
The deployed docker container running your app's web process will bind to either the internal docker network interface (i.e. `docker inspect --format '{{ .NetworkSettings.IPAddress }}' $CONTAINER_ID`) or an external interface (i.e. 0.0.0.0) depending on dokku's VHOST configuration. Dokku will attempt to bind to the internal docker network interface unless you specifically set NO_VHOST for the given app or your dokku installation is not setup to use VHOSTS (i.e. $DOKKU_ROOT/VHOST or $DOKKU_ROOT/HOSTNAME is set to an IPv4 or IPv6 address)
```shell
# container bound to docker interface
root@dokku:~/dokku# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1b88d8aec3d1 dokku/node-js-app:latest "/bin/bash -c '/star About a minute ago Up About a minute goofy_albattani
root@dokku:~/dokku# docker inspect --format '{{ .NetworkSettings.IPAddress }}' goofy_albattani
172.17.0.6
# container bound to all interfaces (previous default)
root@dokku:/home/dokku# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d6499edb0edb dokku/node-js-app:latest "/bin/bash -c '/star About a minute ago Up About a minute 0.0.0.0:49153->5000/tcp nostalgic_tesla
```