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Networking with DockerPioneers.Paris
Adrien Blind, Laurent Grangeau
Who are we ?
Adrien BlindDevOps coach, Banking Industry
@adrienblind [email protected]
Laurent GrangeauDevOps coach, Finaxys
@laurentgrangeau [email protected]
The container paradigm « A technology which standardize packaging
and facilitates operations of applications »
IsolationVirtualisation
VM VMVM
Hypervisor
Hardware
App.
MDW
App.
MDW
App.
MDW
Kernel Kernel Kernel
OSbase
OSbase
OSbase
Kernel
Hardware or VM
Container
App.
OSbase
MDW
Container
App.
OSbase
MDW
Container
App.
MDW
OSbase
PO DI LI SORTABLE SPOSABLE VE CIAL
Docker’s observable properties
Spreading docker on multiple host
You will probably not leverage on a single host...
Creating a docker hosting capability will generate additionnal challenges Topology Orchestration Networking : clustering, multi-tenancy, etc.
Let’s now focus on the networking challenges
Overlay networks Virtual networks ‘floating’ on top of the base network
Host
Physical network
Host
Tenant #1 networkApp server App server App server DB
Tenant #2 networkDB App server
Major competitors
OpenVSwitch & pipework… SocketPlane Weave
Laptop
Demo using Weave
Virtual host Virtual Host
Tenant #110.0.100.0/24
App server10.0.100.2
eth0
DB server10.0.100.1
Tenant #210.0.200.0/24
DB server10.0.200.1
Appserver10.0.200.2
#1 Vagrant delivers virtual hosts having
Docker Engine installed
#3 Containers are popped through
weave run command (wrap docker run)
#2 Weave launches a special container used
as a network router
Weave Weave
eth0 eth0
Virtual network
Cloud DevOps
Opportunities
Conclusion
Appendix
• Launch Weave– host1:~$ sudo weave launch– host2:~$ sudo weave launch 172.17.8.101
• Create DB containers– host1:~$ sudo weave run 10.0.100.1/24 -itd -e
MYSQL_ROOT_PASSWORD=mysecretpassword mariadb– host2:~$ sudo weave run 10.0.200.1/24 -itd -e
MYSQL_ROOT_PASSWORD=mysecretpassword mariadb
Appendix
• Link APP containers to DB containers– host1:~$ sudo weave run 10.0.200.2/24 -itd -e
WORDPRESS_DB_HOST=10.0.200.1 -e WORDPRESS_DB_PASSWORD=mysecretpassword -p 8080:80 wordpress
– host2:~$ sudo weave run 10.0.100.2/24 -itd -e WORDPRESS_DB_HOST=10.0.100.1 -e WORDPRESS_DB_PASSWORD=mysecretpassword -p 8080:80 wordpress
