Docker Networking Magic

I have been quiet on here as I am in the process of writing again, one of things I have been looking at is Dockers new networking features. This gave me an excuse to have a play with Weave. Rather than go into too much detail here, lets go all click bait because you won’t believe what happened next.

I launched two hosts in Digital Ocean↗ , one in London and then one in New York City using Docker Machine;

Once both hosts were up and running I downloaded the Weave binaries on each host;

Once the binary was on each host, I launched Weave on each host making sure I provided a password so that traffic between the host machines would be encrypted;

Now Weave is running on both my hosts, I instructed the mesh-nyc host to connect to the IP address of the mesh-london host;

and finally check the status of the Weave cluster;

There should be two peers and 2 established connections.

This is where it gets interesting. Launching a NGINX↗ container on the New York City host by running;

and then on the London host, try wgetting the page being served by NGINX (its just a plain one which says Hello from NGINX);

and then finally ping the NGINX container;

If you can’t be bothered to run it yourself, and who can blame you, here is anasciicinema↗recording;

As you can see, with no effort on my part other than the commands above I had encrypted, multi-host container networking !!!

Don’t forget to get teardown the twoDigital Ocean↗hosts if you brought them up;

For further reading on Weave Net pleasesee their documentation↗.