help setting Docker DHCP+DNS for my network

ehudkaldor commented 10 years ago

I keep finding partial answers to this, so maybe someone here will know: I am trying to set up a home network, with Ubuntu running Docker, with a container running DNSMASQ (or ISC DHCP + BIND9) to serve the network. the Docker host (Ubuntu) will be wired to the cable modem, and to a wireless access point. so,

the DNSMASQ container needs to be able to serve the real network
preferably, the Ubuntu host will get its IP from DNSMASQ after it boots and starts teh container, but i can live with having a static IP on it.
DNSMASQ needs to be able to route outside.
another container will run IPtables and will serve as the gateway. its gateway will be the modem. wow, that sounds like a lot now that i type it. any other approach to getting this done is welcome too. i already thought of running a VM on libvirt to serve the same purpose.

bonus: have multiple networks based on VLANs, each with its own DHCP container.

wow.

jpetazzo commented 10 years ago

Hi,

There's just one thing that confuses me:

preferably, the Ubuntu host will get its IP from DNSMASQ after it boots and starts teh container, but i can live with having a static IP on it.

Does that mean that you want the Ubuntu host to:

start without an IP address
start DNSMASQ container
obtain IP address from DNSMASQ container?

ehudkaldor commented 10 years ago

i would prefer it, so that IPs are managed in one central spot (that is, the DHCP). I do, however, understand the risk, and I'm willing to leave that portion.

so, i am looking to run a DHCP in a container, that will serve outside the host. the host will have a static IP (let's say 10.20.30.1), the dockerized DHCP will have a static IP (10.20.30,2) and will be serving as DHCP to all others who connect to the network.

i understand the one thing that makes this case (DHCP) special is that DHCP listens on ARP, under the IP layer, and i am not sure if this is passed along to the container. while i can find documentation about running a dockerized DHCP for other containers, i cannot seem to find how to make it serve the host network.

ehudkaldor commented 9 years ago

bump?

jpetazzo commented 9 years ago

Would this help you:

https://github.com/jpetazzo/pxe

It shows how to run a PXE server (and therefore, a DHCP server) in a container.

jpetazzo commented 9 years ago

Closing older issues.

jpetazzo / pipework

help setting Docker DHCP+DNS for my network #94