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Practical Design
Patterns in
Docker
Networking
Dan Finneran
EMEA Solutions
Architect, Docker
Why this topic?
Agenda
● The evolving architecture of application networking
● Docker networking
● Infrastructure design patterns
● Design Patterns when modernizing a traditional application
● [REDACTED]
● Summary and Q/A
The evolving architecture of
application networking
Physically hosted applications
● Services, application components are 1:1 with network addresses
and architecture.
● Often flat or simplistic networks defined by physical network
ports or VLANs used to segregate the application from the
network.
● High availability is provided by clustering software or DNS/load-
balancer across multiple deployments/sites.
[Active VIP]
10.1.0.310.1.0.2
Witness
host
Physically hosted applications
DNS
10.0.0.310.0.0.2 10.0.0.4 10.0.0.5 10.0.0.6
Tier 1
Storage Replication
to secondary site
Tier 2
Virtual (Machine) applications
● Services and Applications are broken down into smaller VM
allocations resulting in an explosion of network resources
● The tight-packing of numerous VMs per host has resulted in
numerous networks being provisioned to every host.
● Virtual LANs are used as the method for providing segregation
between applications and application tiers.
Virtual (Machine) applications
VM
Host
VM
Host
VLAN101 (F/E)
VLAN101 (F/E)
VLAN102 (App)
VLAN102 (App)
VLAN103 (B/E)
VLAN103 (B/E)
Load
Balancer
Docker networking
Docker Networking
docker network ls
NETWORK ID NAME DRIVER SCOPE
4507d8b4dd86 bridge bridge local
8866a19c0751 docker_gwbridge bridge local
b88e79e31749 host host local
vlujsum8my0u ingress overlay swarm
e12df2f39d06 none null local
ed60df3f6402 mac_net macvlan local
[dan@dockercon ~]$
[dan@dockercon ~]$
172.17.0.1
172.17.0.1
Host/Bridge Networking
Docker Engine
Bridge | NAT
Docker Engine
Bridge | NAT
Docker Engine
Bridge | NAT
172.17.0.1
10.0.0.1
10.0.0.2
10.0.0.3
:80
docker run –-net=host nginx
[dan@dockercon ~]$
[dan@dockercon ~]$
● The host flag will start the
container in the same
namespace as the host itself
allowing a container to use the
hosts networking stack directly.
● Provides near metal speed,
however can result in port
conflicts.
:80
172.17.0.1
172.17.0.1
Host/Bridge Networking
Docker Engine
Bridge | NAT
Docker Engine
Bridge | NAT
Docker Engine
Bridge | NAT
172.17.0.0/16
172.17.0.1
10.0.0.1
10.0.0.2
10.0.0.3
docker run dockerimage:latest
[dan@dockercon ~]$
[dan@dockercon ~]$
● Containers are started and
connected by default to the
internal bridge network.
● These containers wont expose
any network connectivity to the
outside world by design, however
can speak to one another whilst
on the same host.
:80:80
172.17.0.1
172.17.0.1
Host/Bridge Networking
Docker Engine
Bridge | NAT
Docker Engine
Bridge | NAT
Docker Engine
Bridge | NAT
172.17.0.1
172.17.0.2
:80
10.0.0.1
10.0.0.2
10.0.0.3
docker run –p 80:80 nginx
[dan@dockercon ~]$
[dan@dockercon ~]$
● The –p flag will expose an
external port on the host and
map it to a port on the container.
● Only containers with services
need to expose their ports
potentially solving port-conflicts.
:80
:80:80
172.17.0.0/16
Swarm Overlay networking
Docker Engine
Overlay
Docker Engine
Overlay
Docker Engine
Overlay
10.0.0.1
10.0.0.2
10.0.0.3
docker service create –-name web 
--replicas 2 
--publish 8080:80 
nginx
[dan@dockercon ~]$
:8080
:8080
:8080
:80
:80
● The Overlay network makes
use of VXLAN in order to
create an overlay network
over the underlying network.
● The tunnel allows containers
across hosts to communicate.
Swarm Overlay networking
Docker Engine
Overlay
Docker Engine
Overlay
Docker Engine
Overlay
10.0.0.1
10.0.0.2
10.0.0.3
:80
:80
:8080
:8080
:8080
● By default the overlay is
encrypted with the AES algorithm
and hosts will rotate their keys
every 12 hours.
● Publishing a port applies to all
nodes in the swarm cluster.
Regardless of node connected to,
the request is forwarded to a
node running the task.
docker service create –-name web 
--replicas 2 
--publish 8080:80 
nginx
[dan@dockercon ~]$
Swarm Overlay networking
Docker Engine
Overlay
Docker Engine
Overlay
Docker Engine
Overlay
10.0.0.1
10.0.0.2
10.0.0.3
:80
:80
● Each container gets a pair of
IP addresses.
● One IP address exists on the
Overlay network, this allows
all containers on the network
to communicate
● The other IP address carries
the tunnel to other hosts in
the cluster and contains all the
actual data that needs to
leave the host.
10.0.0.3
10.0.0.4
172.18.0.3
172.18.0.4
Macvlan driver Docker Engine
10.0.0.1
10.1.0.1
10.1.0.2
Docker Engine
10.0.0.2
10.1.0.3
10.1.0.4
● The Macvlan driver provides a hardware
(MAC) address for each container,
allowing them to have a full TCP/IP stack.
● Allows containers to become part of the
traditional network, and use things like
external IPAM or VLAN trunking when
numerous networks are needed.
● No overhead from technologies such as
VXLAN or NAT.
Macvlan driver Docker Engine
10.0.0.1
10.1.0.2
10.1.0.3
Docker Engine
10.0.0.2
10.1.0.4
10.1.0.5
docker network create -d macvlan 
--subnet=10.1.0.0/24 
--gateway=10.1.0.1 
-o parent=eth0 mac_net
[dan@dockercon ~]$
● Create a network using the macvlan
network and assign the
ranges/gateway and the parent
adapter (or sub-adapter for vlans
e.g eth0.120)
Macvlan driver Docker Engine
10.0.0.1
10.1.0.2
10.1.0.3
Docker Engine
10.0.0.2
10.1.0.4
10.1.0.5
docker run --net=mac_net 
--ip=10.1.0.2 
nginx
[dan@dockercon ~]$
● When starting a container you can
apply a physical IP address on that
network.
● The container is effectively another
host on the underlay network.
Macvlan driver
10.1.0.1
10.1.0.2
10.1.0.3
10.1.0.4
● The use of the macvlan driver essentially
makes a Docker container a first class
citizen on the network.
● This functionality however carries
additional overhead in terms of network
management, as each container will now
exist on the network as its own entity.
10.1.0.5
10.1.0.6
10.1.0.7
10.1.0.8
10.1.0.9
10.1.0.10
10.1.0.11
10.1.0.12
10.1.0.13
10.1.0.14
10.1.0.15
10.1.0.16
Networking plugins
Docker Engine
10.0.0.2
Plugin
Docker Engine
10.0.0.1
Plugin
● Docker networking plugins allow vendors to extend the functionality of their network devices and
technologies into the Docker Engine.
● Providing features such as vendor specific IP Address Management or enabling the network to
configure itself to provide functionality to containers through their lifecycle such as
(overlays/QOS/Load balancing).
Configuration
Infrastructure design
patterns
Separate data/control planes
Docker Engine
Docker Engine
10.0.0.1
10.0.0.2
docker swarm init 
--advertise-addr eth0 
--data-path-addr eth1
[dan@dockercon ~]$
Overlay
10.1.0.1
10.1.0.2
● When initially configuring a Docker
swarm cluster on hosts with multiple
NICs there is the option of separating
the data and control planes.
● This provides physical and logical
separation of traffic leaving the host.
Separate data/control planes
Docker Engine
Docker Engine
10.0.0.1
10.0.0.2
docker swarm join 
--token XYZ --advertise-addr eth0 
--data-path-addr eth1 
10.0.0.1:2377
[dan@dockercon ~]$
Overlay
Overlay
10.1.0.1
10.1.0.2
● Joining additional nodes to the swarm
cluster takes two additional flags to
specify the traffic carried by a
particular adapter.
● Any services created will then be part of
the data plane and have traffic
segregated from the control plane.
Design Patterns when
modernizing a traditional
application
Docker Enterprise Edition
● Docker Enterprise Edition provides a
full CaaS platform (Containers as a
Service).
● Comes with Integrated Container
Orchestration, management platform
and increased security (RBAC, images
scanning etc.)
● Enterprise supported platform for
production deployments.
Universal Control Plane
● The Docker UCP provides a clustered
enterprise grade management platform for
Docker.
● A centralized platform for managing and
monitoring swarm container clusters and
container infrastructure.
● Extended functionalisation of the Docker
platform making it easier to deploy
applications at scale.
● Can be controlled through the UI or through
the CLI (client bundle) or through the Docker
APIs.
Docker Trusted Registry
● Enterprise grade storage for all your
Docker Images, allowing users to host
their images locally.
● Can become part of the CI/CD processes
simplifying the process to build, ship and
run your applications.
● Images can be automatically scanned for
vulnerabilities ensuring that only
compliant images can be deployed.
Application Architecture
VLAN101 (F/E) VLAN102 (app)
VLAN101 (F/E) VLAN102 (app)
VM
Host
VM
Host
Load
Balancer
VLAN103 (DB)
DB Host(s)
VLAN103
(DB)
VLAN103
(DB)
“Behind the scenes the
developers and application
maintainers have
repackaged our applications
into containers”
Application Architecture
VLAN101 (F/E) VLAN102 (app)
VLAN101 (F/E) VLAN102 (app)
VM
Host
VM
Host
Load
Balancer
VLAN103 (DB)
DB Host(s)
VLAN103
(DB)
VLAN103
(DB)
● The explosion of VMs also drove the
explosion of VLANs, which were a
recommended network architectural
choice in order to provide segregation of
tiers of virtual infrastructure.
● However we can simplify the network
greatly by making use of overlays
(VXLAN), which not only provide
segregation but also encryption.
Front-End with HRM
Worker 1 Worker X
Docker Engine Docker Engine
Overlay
● Docker EE provides the HTTP Routing
Mesh capability, which simplifies the
routing between services.
● The HRM will inspect the hostname that
has been requested and route the traffic
to that particular service.
● This allows multiple overlays to exist in
harmony and traffic to be routed to them
as requests hit the HRM port.
Overlaywww.petstore.com
api.petstore.com
:80
Scalable services
Worker 1 Worker X
Docker Engine Docker Engine
Overlay
● Taking the existing and now packaged
applications, we can deploy them as
services.
● We can deploy and scale them up as
needed across our cluster.
● Exposing service ports will provide load
balancing across service tasks and
ensure traffic is routed to where those
tasks are running.
OverlayApp Service
Store Service
Application Architecture
VM
Host
VLAN103 (DB)
Load
Balancer
VM
Host
DB Host(s)
VLAN101 (F/E) VLAN102 (app) VLAN103
(DB)
VLAN101 (F/E) VLAN102 (app) VLAN103
(DB)
● Some elements of an application require
direct access to the network to provide
low-level services.
● Other elements may have a requirement
that they have to be part of an existing
network or VLAN to provide direct
access to other services.
● Some elements are also based upon fixed
or hard-coded IP addresses and in some
cases a licensing restriction.
Preserving existing integrations
Worker 1 Worker X
Docker Engine Docker Engine
● The Use of Macvlan allows a
container with specific requirements
such as packet inspection directly on
the network.
● Custom singleton applications that
are hardcoded to interact with
databases can make use of their
original IP addresses and be part of
the same segregated VLAN in which
the database server(s) reside.
10.1.0.47
10.20.0.19
10.20.0.20
VLAN103
Design Patterns
●Where possible, there is a great opportunity to provide simplification of networking.
●The use of overlays (VXLAN) is all handled in software, providing software defined
networking “as code”. This also has the additional benefit of simplifying network device
configurations.
●Overlay provided load balancing again is specified as part of the service design
simplifying the application and the network architecture design.
●Cases where VLANs or hard pinned IP connectivity are required can be met through the
use of containers attached through macvlan.
Explore the hands on labs in
the experience centre for
some real experience.
!
Upcoming networking with
the Universal Control
Plane
“Disclaimer”
UCP Architecture
UCP Node(s) Worker 1 Worker 2 Worker 3
Docker EngineDocker EngineDocker Engine
UCP-Agent
UCP Architecture
UCP Node(s) Worker 1 Worker 2 Worker 3
Kube
API
Kubelet
Docker Engine Docker Engine Docker Engine
UCP Architecture
UCP Node(s)
Service Swarm
Docker Engine(s)
Service Kube
Docker Engine(s)
Ingress-Controller
swarm.dockercon.com
kube.dockercon.com
Summary
● Applications that can be re-homed on a network can make use of Docker networking
features that will simplify their deployment and their scaling.
● Overlay networks provide the capability to place workloads through the cluster without the
headache of having to be aware of task location.
● Services that are tied or hard coded to specific network requirements can still be deployed
in containers.
Interested in MTA
●Stop by the booth (MTA pod)
●Download the kit www.docker.com/mta
●Look for a MTA Roadshow near you
●Contact your Account Team
Docker EE
Hosted Demo
Add picture
here
docker.com/trial
● Free 4 Hour Demo
● No Servers Required
● Full Docker EE
Cluster Access
Practical Design Patterns in
Docker Networking
Dan Finneran @thebsdbox
Q/A
cat docker-compose.yaml
version: "3.1"
services:
migrated-application:
image: dockercon/frontend:1.0
ports:
- 8080
networks:
- back-end
- ucp-hrm
deploy:
mode:
replicated replicas: 5
labels:
com.docker.ucp.mesh.http.8080=external_route=http://${DOMAIN},internal_port=8080
networks:
back-end:
- driver:
- overlay ucp-hrm:
- external:
- name: ucp-hrm
[dan@dockercon ~]$

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Practical Design Patterns in Docker Networking

  • 1. Practical Design Patterns in Docker Networking Dan Finneran EMEA Solutions Architect, Docker
  • 3. Agenda ● The evolving architecture of application networking ● Docker networking ● Infrastructure design patterns ● Design Patterns when modernizing a traditional application ● [REDACTED] ● Summary and Q/A
  • 4. The evolving architecture of application networking
  • 5. Physically hosted applications ● Services, application components are 1:1 with network addresses and architecture. ● Often flat or simplistic networks defined by physical network ports or VLANs used to segregate the application from the network. ● High availability is provided by clustering software or DNS/load- balancer across multiple deployments/sites.
  • 6. [Active VIP] 10.1.0.310.1.0.2 Witness host Physically hosted applications DNS 10.0.0.310.0.0.2 10.0.0.4 10.0.0.5 10.0.0.6 Tier 1 Storage Replication to secondary site Tier 2
  • 7. Virtual (Machine) applications ● Services and Applications are broken down into smaller VM allocations resulting in an explosion of network resources ● The tight-packing of numerous VMs per host has resulted in numerous networks being provisioned to every host. ● Virtual LANs are used as the method for providing segregation between applications and application tiers.
  • 8. Virtual (Machine) applications VM Host VM Host VLAN101 (F/E) VLAN101 (F/E) VLAN102 (App) VLAN102 (App) VLAN103 (B/E) VLAN103 (B/E) Load Balancer
  • 10. Docker Networking docker network ls NETWORK ID NAME DRIVER SCOPE 4507d8b4dd86 bridge bridge local 8866a19c0751 docker_gwbridge bridge local b88e79e31749 host host local vlujsum8my0u ingress overlay swarm e12df2f39d06 none null local ed60df3f6402 mac_net macvlan local [dan@dockercon ~]$ [dan@dockercon ~]$
  • 11. 172.17.0.1 172.17.0.1 Host/Bridge Networking Docker Engine Bridge | NAT Docker Engine Bridge | NAT Docker Engine Bridge | NAT 172.17.0.1 10.0.0.1 10.0.0.2 10.0.0.3 :80 docker run –-net=host nginx [dan@dockercon ~]$ [dan@dockercon ~]$ ● The host flag will start the container in the same namespace as the host itself allowing a container to use the hosts networking stack directly. ● Provides near metal speed, however can result in port conflicts. :80
  • 12. 172.17.0.1 172.17.0.1 Host/Bridge Networking Docker Engine Bridge | NAT Docker Engine Bridge | NAT Docker Engine Bridge | NAT 172.17.0.0/16 172.17.0.1 10.0.0.1 10.0.0.2 10.0.0.3 docker run dockerimage:latest [dan@dockercon ~]$ [dan@dockercon ~]$ ● Containers are started and connected by default to the internal bridge network. ● These containers wont expose any network connectivity to the outside world by design, however can speak to one another whilst on the same host. :80:80
  • 13. 172.17.0.1 172.17.0.1 Host/Bridge Networking Docker Engine Bridge | NAT Docker Engine Bridge | NAT Docker Engine Bridge | NAT 172.17.0.1 172.17.0.2 :80 10.0.0.1 10.0.0.2 10.0.0.3 docker run –p 80:80 nginx [dan@dockercon ~]$ [dan@dockercon ~]$ ● The –p flag will expose an external port on the host and map it to a port on the container. ● Only containers with services need to expose their ports potentially solving port-conflicts. :80 :80:80 172.17.0.0/16
  • 14. Swarm Overlay networking Docker Engine Overlay Docker Engine Overlay Docker Engine Overlay 10.0.0.1 10.0.0.2 10.0.0.3 docker service create –-name web --replicas 2 --publish 8080:80 nginx [dan@dockercon ~]$ :8080 :8080 :8080 :80 :80 ● The Overlay network makes use of VXLAN in order to create an overlay network over the underlying network. ● The tunnel allows containers across hosts to communicate.
  • 15. Swarm Overlay networking Docker Engine Overlay Docker Engine Overlay Docker Engine Overlay 10.0.0.1 10.0.0.2 10.0.0.3 :80 :80 :8080 :8080 :8080 ● By default the overlay is encrypted with the AES algorithm and hosts will rotate their keys every 12 hours. ● Publishing a port applies to all nodes in the swarm cluster. Regardless of node connected to, the request is forwarded to a node running the task. docker service create –-name web --replicas 2 --publish 8080:80 nginx [dan@dockercon ~]$
  • 16. Swarm Overlay networking Docker Engine Overlay Docker Engine Overlay Docker Engine Overlay 10.0.0.1 10.0.0.2 10.0.0.3 :80 :80 ● Each container gets a pair of IP addresses. ● One IP address exists on the Overlay network, this allows all containers on the network to communicate ● The other IP address carries the tunnel to other hosts in the cluster and contains all the actual data that needs to leave the host. 10.0.0.3 10.0.0.4 172.18.0.3 172.18.0.4
  • 17. Macvlan driver Docker Engine 10.0.0.1 10.1.0.1 10.1.0.2 Docker Engine 10.0.0.2 10.1.0.3 10.1.0.4 ● The Macvlan driver provides a hardware (MAC) address for each container, allowing them to have a full TCP/IP stack. ● Allows containers to become part of the traditional network, and use things like external IPAM or VLAN trunking when numerous networks are needed. ● No overhead from technologies such as VXLAN or NAT.
  • 18. Macvlan driver Docker Engine 10.0.0.1 10.1.0.2 10.1.0.3 Docker Engine 10.0.0.2 10.1.0.4 10.1.0.5 docker network create -d macvlan --subnet=10.1.0.0/24 --gateway=10.1.0.1 -o parent=eth0 mac_net [dan@dockercon ~]$ ● Create a network using the macvlan network and assign the ranges/gateway and the parent adapter (or sub-adapter for vlans e.g eth0.120)
  • 19. Macvlan driver Docker Engine 10.0.0.1 10.1.0.2 10.1.0.3 Docker Engine 10.0.0.2 10.1.0.4 10.1.0.5 docker run --net=mac_net --ip=10.1.0.2 nginx [dan@dockercon ~]$ ● When starting a container you can apply a physical IP address on that network. ● The container is effectively another host on the underlay network.
  • 20. Macvlan driver 10.1.0.1 10.1.0.2 10.1.0.3 10.1.0.4 ● The use of the macvlan driver essentially makes a Docker container a first class citizen on the network. ● This functionality however carries additional overhead in terms of network management, as each container will now exist on the network as its own entity. 10.1.0.5 10.1.0.6 10.1.0.7 10.1.0.8 10.1.0.9 10.1.0.10 10.1.0.11 10.1.0.12 10.1.0.13 10.1.0.14 10.1.0.15 10.1.0.16
  • 21. Networking plugins Docker Engine 10.0.0.2 Plugin Docker Engine 10.0.0.1 Plugin ● Docker networking plugins allow vendors to extend the functionality of their network devices and technologies into the Docker Engine. ● Providing features such as vendor specific IP Address Management or enabling the network to configure itself to provide functionality to containers through their lifecycle such as (overlays/QOS/Load balancing). Configuration
  • 23. Separate data/control planes Docker Engine Docker Engine 10.0.0.1 10.0.0.2 docker swarm init --advertise-addr eth0 --data-path-addr eth1 [dan@dockercon ~]$ Overlay 10.1.0.1 10.1.0.2 ● When initially configuring a Docker swarm cluster on hosts with multiple NICs there is the option of separating the data and control planes. ● This provides physical and logical separation of traffic leaving the host.
  • 24. Separate data/control planes Docker Engine Docker Engine 10.0.0.1 10.0.0.2 docker swarm join --token XYZ --advertise-addr eth0 --data-path-addr eth1 10.0.0.1:2377 [dan@dockercon ~]$ Overlay Overlay 10.1.0.1 10.1.0.2 ● Joining additional nodes to the swarm cluster takes two additional flags to specify the traffic carried by a particular adapter. ● Any services created will then be part of the data plane and have traffic segregated from the control plane.
  • 25. Design Patterns when modernizing a traditional application
  • 26. Docker Enterprise Edition ● Docker Enterprise Edition provides a full CaaS platform (Containers as a Service). ● Comes with Integrated Container Orchestration, management platform and increased security (RBAC, images scanning etc.) ● Enterprise supported platform for production deployments.
  • 27. Universal Control Plane ● The Docker UCP provides a clustered enterprise grade management platform for Docker. ● A centralized platform for managing and monitoring swarm container clusters and container infrastructure. ● Extended functionalisation of the Docker platform making it easier to deploy applications at scale. ● Can be controlled through the UI or through the CLI (client bundle) or through the Docker APIs.
  • 28. Docker Trusted Registry ● Enterprise grade storage for all your Docker Images, allowing users to host their images locally. ● Can become part of the CI/CD processes simplifying the process to build, ship and run your applications. ● Images can be automatically scanned for vulnerabilities ensuring that only compliant images can be deployed.
  • 29. Application Architecture VLAN101 (F/E) VLAN102 (app) VLAN101 (F/E) VLAN102 (app) VM Host VM Host Load Balancer VLAN103 (DB) DB Host(s) VLAN103 (DB) VLAN103 (DB)
  • 30. “Behind the scenes the developers and application maintainers have repackaged our applications into containers”
  • 31. Application Architecture VLAN101 (F/E) VLAN102 (app) VLAN101 (F/E) VLAN102 (app) VM Host VM Host Load Balancer VLAN103 (DB) DB Host(s) VLAN103 (DB) VLAN103 (DB) ● The explosion of VMs also drove the explosion of VLANs, which were a recommended network architectural choice in order to provide segregation of tiers of virtual infrastructure. ● However we can simplify the network greatly by making use of overlays (VXLAN), which not only provide segregation but also encryption.
  • 32. Front-End with HRM Worker 1 Worker X Docker Engine Docker Engine Overlay ● Docker EE provides the HTTP Routing Mesh capability, which simplifies the routing between services. ● The HRM will inspect the hostname that has been requested and route the traffic to that particular service. ● This allows multiple overlays to exist in harmony and traffic to be routed to them as requests hit the HRM port. Overlaywww.petstore.com api.petstore.com :80
  • 33. Scalable services Worker 1 Worker X Docker Engine Docker Engine Overlay ● Taking the existing and now packaged applications, we can deploy them as services. ● We can deploy and scale them up as needed across our cluster. ● Exposing service ports will provide load balancing across service tasks and ensure traffic is routed to where those tasks are running. OverlayApp Service Store Service
  • 34. Application Architecture VM Host VLAN103 (DB) Load Balancer VM Host DB Host(s) VLAN101 (F/E) VLAN102 (app) VLAN103 (DB) VLAN101 (F/E) VLAN102 (app) VLAN103 (DB) ● Some elements of an application require direct access to the network to provide low-level services. ● Other elements may have a requirement that they have to be part of an existing network or VLAN to provide direct access to other services. ● Some elements are also based upon fixed or hard-coded IP addresses and in some cases a licensing restriction.
  • 35. Preserving existing integrations Worker 1 Worker X Docker Engine Docker Engine ● The Use of Macvlan allows a container with specific requirements such as packet inspection directly on the network. ● Custom singleton applications that are hardcoded to interact with databases can make use of their original IP addresses and be part of the same segregated VLAN in which the database server(s) reside. 10.1.0.47 10.20.0.19 10.20.0.20 VLAN103
  • 36. Design Patterns ●Where possible, there is a great opportunity to provide simplification of networking. ●The use of overlays (VXLAN) is all handled in software, providing software defined networking “as code”. This also has the additional benefit of simplifying network device configurations. ●Overlay provided load balancing again is specified as part of the service design simplifying the application and the network architecture design. ●Cases where VLANs or hard pinned IP connectivity are required can be met through the use of containers attached through macvlan.
  • 37. Explore the hands on labs in the experience centre for some real experience. !
  • 38. Upcoming networking with the Universal Control Plane
  • 40. UCP Architecture UCP Node(s) Worker 1 Worker 2 Worker 3 Docker EngineDocker EngineDocker Engine UCP-Agent
  • 41. UCP Architecture UCP Node(s) Worker 1 Worker 2 Worker 3 Kube API Kubelet Docker Engine Docker Engine Docker Engine
  • 42. UCP Architecture UCP Node(s) Service Swarm Docker Engine(s) Service Kube Docker Engine(s) Ingress-Controller swarm.dockercon.com kube.dockercon.com
  • 43. Summary ● Applications that can be re-homed on a network can make use of Docker networking features that will simplify their deployment and their scaling. ● Overlay networks provide the capability to place workloads through the cluster without the headache of having to be aware of task location. ● Services that are tied or hard coded to specific network requirements can still be deployed in containers.
  • 44. Interested in MTA ●Stop by the booth (MTA pod) ●Download the kit www.docker.com/mta ●Look for a MTA Roadshow near you ●Contact your Account Team
  • 45. Docker EE Hosted Demo Add picture here docker.com/trial ● Free 4 Hour Demo ● No Servers Required ● Full Docker EE Cluster Access
  • 46. Practical Design Patterns in Docker Networking Dan Finneran @thebsdbox
  • 47. Q/A
  • 48. cat docker-compose.yaml version: "3.1" services: migrated-application: image: dockercon/frontend:1.0 ports: - 8080 networks: - back-end - ucp-hrm deploy: mode: replicated replicas: 5 labels: com.docker.ucp.mesh.http.8080=external_route=http://${DOMAIN},internal_port=8080 networks: back-end: - driver: - overlay ucp-hrm: - external: - name: ucp-hrm [dan@dockercon ~]$