Docker compose running containers in net host

Question

I want to spawn 3 services in the "host" net using docker-compose. Here is my docker-compose.yml file:

version: '2'
services:
  mysql:
    image: mysql
    net: "host"
  nginx:
    image: nginx
    net: "host"
  app:
    image: tomcat
    net: "host"

I got the following error:

$ docker-compose up
[31mERROR[0m: Validation failed in file '.\docker-compose.yml', reason(s):
Unsupported config option for services.app: 'net'
Unsupported config option for services.mysql: 'net'
Unsupported config option for services.nginx: 'net'

I'm using boot2docker on windows.

Docker, and Docker-compose version:

$ docker -v
Docker version 1.10.2, build c3959b1
$ docker-compose -version
docker-compose version 1.6.0, build cdb920a

If I run all services manually by using docker run --net = "host" everything is working fine.

Answer 1

Just print

network_mode: "host"

This might not work for Mac.

Comments

network_node worked like a charm, Thanks @Kalgi

Answer 2

This is most probably a syntax error. Please check your code's indentation.

Comments

Hey @Gargi, the syntax seems fine to me. Can you please share some syntax reference I can compare my syntax with? That would be very helpful

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Have a look at this for understanding the syntax.

Answer 3

The reason for this error is that there is an attempt to use a compose file option that is incompatible with the engine version that you're using against. 

In your case, the compose version is 1.6 and you're using version 2 in your Dockerfile.

Answer 4

Hey@Hannah, Check the compose file format specifications and compatibility matrix for what version of the file supports your option.