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How to indicate host interface in docker-compose version 3.3?

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#1

Good afternoon everyone.

forgive me, I do not know if the post would be good here.

I’m doing a cluster of two raspberry pi with docker using docker-compose.

But I need to know how to put in the compose that is used in host mode the services.

This is my compose:

<! - begin snippet: js hide: false console: true babel: false ->

<! - language: lang-html ->

 version: "3.4"

 services:
   miservicio_dhcp:
     image: blanrok / dhcpins2
     ports:
       - 67:67
       - 68:68
     tty: true

   miservicio_dns:
     image: blanrok / dnsins2
     ports:
       - 53:53
     tty: true

<! - end snippet ->

Regards, I await your response :), thank you.

#2

Hi

Is it this you’re looking for?

#3

Swarm does not allow to specifify the host interface, though you can map ports and either use ingess or the hosts port (see: https://docs.docker.com/compose/compose-file/#long-syntax-1) to expose your container.

For docker-compose 2.x deployment (as in: not swarm) you can additionaly bind the host port to an ip. Since swarm might schedule the port on any node, there is no way to bind a host port to an ip.

docker-compose allows more of the ‘dirty stuff’ (override ulimits, start containers in privilaged mode and other low level stuff) that Swarm does not support (yet). If you still want multi-container on multi-node deployments, you might want to switch to kubernetes, which allows ever dirtier stuff then docker-compose can even dream of :wink:

1 Like
#4

yes, but I have been reading in the docker documentation and the “network_mode” parameter when I use the docker stack command deply compose-file = docker-compose.yml, I answered that network_mode is not supported. How could I use a parameter equivalent to network_mode: host, or what alternative is there?

Thank you

#5

I understand that you didn’t like the responsen, though let me repeat myself: it is not possible with Docker Swarm.

If you would have read the documentation completly, you should have read that “network_mode” is not supported for Swarm Deployments.

#6

meyay. my answer was for terpz, about what he said about docker-compose

#7

Thank you meyay :slight_smile: