Docker Tutorials

Hey Zikes, did you read this tutorial? > http://www.slideshare.net/julienbarbier42/building-a-saas-us...

It gives you an example of what you can do with it > www.memcachedasaservice.com

and explains you everything step by step. The source code is also available on gitHub here: > https://github.com/jbarbier/SaaS_Memcached

In case the way I word it helps, containers are a very similar concept to FreeBSD jails or Solaris Zones - so once you get what a container is you may appreciate some of the power that already existed in those systems. It's essentially a partition of the system: picture a kernel, but an additional instance of the network stack for each container, a certain mount-point that becomes the "root" file system for all actions inside that container, etc.

In the end you get very similar functionality to a VM, but because it's just partitions of a kernel it's much more integrated than some third-party hypervisor. This lets you do things like inspect processes that are inside your containers as though they were native processes, etc...

I recommend reading https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt and the per-namespace documentation linked to at http://lxc.sourceforge.net/index.php/about/kernel-namespaces...

If you're having trouble wrapping your head around containers, look for documentation on LXC, not docker.