In other words the container shares the IP address of the host and doesn’t have one of its own. Docker containers that are connected to the host network basically share the namespaces with their hosts. Host networking is used for standalone containers. To remove a specific network run the below command:įor getting a detailed information about the network run the below command:Ĭreate a container connected with the my-bridge network: Host Networking: To list all the networks run the below command: So, containers connected to this network communicate via IP addressing.Ĭreating a bridge network run the below command: Docker containers that are connected by the means of a bridge network can communicate with each other. This is the default network created by docker on the host machine on which it is installed. Let’s take a look at each one: Bridge Network: It is very easy to isolate and manage the containers, as different containers can be easily connected to each other.ĭocker supports different types of networks, each fit for certain use cases. A docker network is basically a connection between one or more containers. Most GUI options for Docker will report it (Portainer is a good one).Networking is about communication among processes, and Docker’s networking is no different. If you want to get the container IP, then you'll need to query docker for it. However, if you've used bridge, then you can use either the container IP or the container name instead (as this stays inside the virtual network that the host created for all the containers to communicate via).įor example, if you have a Sonarr container named "sonarr" that has an IP of 172.17.0.17, then you could either enter "sonarr" or "172.17.0.17" as the address for Ombi to reach Sonarr. If you've configured your containers to use host networking, then all you'll need to do is use the LAN IP of the Docker host as the IP of the service. If you have an Ombi container, and a Sonarr container (or Radarr/Lidarr/CouchPotato etc), then these services will all need to talk to each other. Docker would see the traffic hit the host on 3589 and pass it through (via Network Address Translation, or 'NAT') to the container on 172.17.0.3:5000 Talking to Other Services ¶ To access the service from outside of the Docker host, you'd browse to the LAN IP of said host and the port you mapped - 3589 in the example above. The two ports do not have to be the same - you could map 3589 on your host to point to 3579 on your container.
This means that you map ports from the host to the container, much like port forwarding for access from outside your network (as you would for passing ports 80 and 443 to your web server, for instance). If the Ombi container was given 172.17.0.3, then it would listen on 172.17.0.3:5000 (for example). Usually, Docker uses 172.17.0.x for these.
Bridge ¶īridge networking makes the Docker Host behave like a VM Host and a router, with a whole separate virtual network behind its own LAN IP.Įach container then gets an IP in a whole different IP range than your LAN itself.
It is appropriate for some systems (like Home Assistant), but one of the benefits of Docker is the 'isolation' of services (so nothing depends on anything else). This means that the container runs like any other network application, with complete freedom to discover other devices/services on your network.
Host networking gives the container direct access to the network adapter of the host machine (the one running Docker). Open Ombi " and setup your ombi installation.Ĭonsiderations ¶ Host vs Bridge Networking ¶ Host ¶