#Docker ip address instead localhost how to
#Docker ip address instead localhost driver
#Docker ip address instead localhost full
#Docker ip address instead localhost registration

We always assume (but isn’t always the case) that docker-compose follows docker run and that every docker run command is available to use in a docker-compose file. You could then run multiple other containers on different host IPs using the same port (i.e. In docker run you can define a port binding with -p and you can give it a host IP as well. Using “volumes_from” implies that the containers will be scheduled on the same engine node, and defining “ports” will prevent containers using the same ports to be on the same host, essentially mutually excluding them from the same engine node. In a swarm cluster, you can use compose to explicitly define a “constraint” on which docker engine a container will be scheduled. You can also explicitly or implicitly tell docker where to schedule containers. For example if you were running a webserver behind a reverse proxy, you could let docker choose random ports for the webserver and then use consul to register the service and notify your load balancer what ephemeral ports the service is available on. You could run your services on alternate random ports and let a service discovery/registration mechanism notify upstream resources where the service is located. Thanks for the comment! There are a few things to consider. This entry was posted in Docker and tagged docker, docker-compose by ForDoDone. Here’s a sample of how you might define a static IP address in docker-compose.yml that would work using docker-compose 1.7.0 In this case I decided to keep the 1.6.2 docker-compose binary along with the 1.7.0 docker-compose binary, then create a symlink to the one I wanted to use as the active docker-compose

rwxr-xr-x 1 root root 7929597 Mar 24 08:01 docker-compose-1.6.2_4d72027 Why can’t I use localhost instead of my server’s IP address. Lrwxrwxrwx 1 root root 31 Mar 30 08:38 docker-compose -> docker-compose-1.7.0dev_85e2fb6 # ln -s docker-compose-1.7.0dev_85e2fb6 docker-compose Luckily, this has already made it into mainline dev for Compose and is earmarked for release with the 1.7.0 milestone (which should coincide with Engine 1.11). I guess we can think of Engine as being upstream of Compose, so some new Engine features take a while to make it into Compose. Unfortunately, Docker Compose (1.6.2) did not support this option. This allows you to define a static IP address for a container at run time. In Docker Engine 1.10 the docker run command received a new flag namely the -ip flag.

#Docker ip address instead localhost full

This was not a cascaded need where successor containers learn predecessors’ IP addresses, but more like a full mesh. Recently, I was working on a very edge-case multi-container application where every container needed to know (or be able to predict) every other containers’ IP address at run time.

#Docker ip address instead localhost registration

If proper service discovery and registration is configured, we just launch containers as needed and they make it into the application ecosystem seamlessly.

<- from 18.03.Usually, when launching Docker containers we don’t really know or care what IP address a specific container will be given.

.internal <- from 17.12.0-ce-mac46 but now deprecated.

In addition, I was a little bit confused there're several names: Great! That's what I wanted to know! But. I found I can resolve as the host IP address in the container on Docker for Mac.

#Docker ip address instead localhost driver

The host networking driver only works on Linux hosts, and is not supported on Docker for Mac, Docker for Windows, or Docker EE for Windows Server.

So I tried it and it works on my Linux machine, but it didn't work on my Mac. With this mode, the container seems to be able access to the host with '127.0.0.1'. I found Docker has 'host networking mode'. So I want my containers to run on both platform. I mainly use Docker for Mac, but sometimes use Linux.

#Docker ip address instead localhost how to

I know how to discover container-to-container, but don't know how to get host IP address from a container. I wanted to access host port from a docker container.įor example, an nginx process is running on the host machine with port 8888 open, then I would like to create a container which can curl host:8888. This information is as of with Docker 18.03.0-ce