docker-compose-macvlan

Docker-compose example using macvlan driver. Example using ansible is included! See ansible folder

This docker-compose file creates a network using macvlan driver and deploys portainer container (Used just as an example) attaching it to the same newly created network.
This gives you the ability to deploy containers with custom static IP address which is different from the host IP address - and all of it without DHCP reservations! (Ensure defined IP address is not used by another host/device/container though!).
You can reach the container with custom defined IP address from any host on the same LAN, however you can not reach it from the host machine itself (Below are instructions how to mitigate this).

Enable host to container networking:

Check the Enable-host-to-container-networking.sh script file or manual steps defined.
For making container accessible within the same host - one needs to create ethernet interface and route the containers used IP address (or range) trough the new interface:

• Create new interface (Interface name is dockerrouteif, and eth0 is the host interface):
  ip link add dockerrouteif link eth0 type macvlan mode bridge

• Then assign IP address to that interface (Imagine it as a gateway - just like a router works but without NAT). In this example I used 192.168.0.249:
  ip addr add 192.168.0.249/32 dev dockerrouteif
  NOTE: Ensure defined IP address is not used by another host/device/container though!
  NOTE: If you check logs i.e. host is using DNS server which is in a container, any requests made from the host will be seen as coming from this IP

• Bring up that interface:
  ip link set dockerrouteif up

• And finally define a range which should be routed trough that iterface:
  ip route add 192.168.0.64/26 dev dockerrouteif

Lastly, bring up the docker compose file:
docker-compose up -d
Success! Portainer now should be accessible from the host machine and all other machines within the same subnet/network!

Network used in the example:

Host interface name: eth0
Gateway: 192.168.0.1
Subnet: 192.168.0.0/24
Host IP: 192.168.0.2
Interface name trough which traffic is routed: dockerrouteif
Docker VLAN name: Dockervlan Dockervlan interface IP: 192.168.0.249
dockervlan routed IP range: 192.168.0.64/26