This covers basics of Docker Macvlan driver, use-cases and demo of 2 use-cases. Associated Youtube video(https://youtu.be/AH2eSNCB-tc)

1. DOCKER NETWORKING
TIPS
Macvlan Usage
Presenter’s Name: Sreenivas Makam
Associated Youtube video:
https://youtu.be/3vI2DVb8qWk

2. About me
 Senior Engineering Manager at Cisco Systems Data Center group
 Author of “Mastering CoreOS” https://www.packtpub.com/networking-
and-servers/mastering-coreos/ )
 Docker Captain(https://www.docker.com/community/docker-captains )
 Blog: https://sreeninet.wordpress.com/
 Projects: https://github.com/smakam
 LinkedIn: https://in.linkedin.com/in/sreenivasmakam
 Twitter: @srmakam

3. Bridge Macvlan
C1
Underlay(ethx)
C2 C1 C2
Underlay(ethx)
C1 C2
Underlay(ethx.1)
Macvlan
C3 C4
Underlay(ethx.2)
Bridge vs Macvlan
• Single physical interface can have multiple mac and ip addresses using macvlan
driver.
• Macvlan bridge is simplified bridge implementation with no mac learning, NAT and
STP.
172.17.x.x
192.168.x.x
192.168.1.x
192.168.1.x
192.168.1.x
192.168.1.x
192.168.2.x
192.168.2.x

4. Need for Macvlan network driver
 Need Container IP directly in underlay
network managed by enterprise IT
 Explicit control over Container IP assignment
 Connect Containers to legacy applications
 Connect Containers to external network
without overlay network overhead
 Have a need to preserve source IP of
container

5. Macvlan Use-case 1
Container
Mysql
database
Host 1 Host 2
192.168.99.x network
Eth0
192.168.99.100
Eth0
192.168.99.102
Macvlan
192.168.99.192
docker network create -d macvlan --subnet=192.168.99.0/24 --ip-range=192.168.99.192/26
--gateway=192.168.99.1 -o macvlan_mode=bridge -o parent=eth1 macvlantest
docker run --net=macvlantest -ti smakam/myubuntu:v6 bash
Connecting to Legacy non-containerized application

6. Macvlan Use-case 2
client
Host 1 Host 2
192.168.99.x network
Eth0
192.168.99.100
Eth0
192.168.99.101
Macvlan
192.168.99.65
Host 1:
docker network create --config-only --subnet 192.168.99.0/24 --gateway 192.168.99.1 -o parent=eth0 --ip-range 192.168.99.64/26
macvlan1c
Host 2:
docker network create --config-only --subnet 192.168.99.0/24 --gateway 192.168.99.1 -o parent=eth1 --ip-range 192.168.99.128/26
macvlan1c
Host 1:
docker network create -d macvlan --scope swarm --config-from macvlan1c macvlanswarm
docker service create --replicas 1 --name client --network macvlanswarm --detach=false smakam/myubuntu:v4 sleep infinity
docker service create --name vote --network macvlanswarm --mode replicated --replicas 2 --publish
mode=ingress,target=80,published=8080 instavote/vote
Vote.1 Vote.2
Swarm
Macvlan
192.168.99.64
Macvlan
192.168.99.128
Multi-service application using Macvlan driver in Swarm cluster

7. References
 Blog on Macvlan and Ipvlan basics
 Blog on Docker Macvlan and Ipvlan
networking plugin
 Docker Networking – common
issues and troubleshooting techniques