1. Container technology. Let’s dive into the world of docker and kubernetes
Bjarte Brandt, DevOps Architect TV2

3. Agenda Why containers? Let’s look into container architecture
Demo: Oracle Database in a container
Why container clusters?
Let’s look into container cluster architecture
Demo: A full container deployment cycle in a container-cluster!

4. Shipping code to the server is too hard.
Why containers?
Shipping code to the server is too hard.

6. Container architecture
Linux Kernel
namespaces: isolation. Much like FreeBDS Jails, Solaris Zones. Started in ns:mnt,pid,net,ipc,uts,user. Look into /proc/pid/ns
cgroup (control group): resource management, resource accounting/tracking solution. Started in 2006 (Google). Merged into kernel 2008 (2.6.24) look at /proc/pid/cgroup (process), /proc/cgroup (system)
The combination of NAMESPACE and CGROUP enables container-technology!!

7. Wait!! We forgot CoW! Filesystem Property CoW: Copy On Write.
When container starts, image (storage,libs,apps,etc) is availabe. Just mount. This is fast!
Storage keeps track of what has changed.
AUFS,overlay (file level) look into /var/lib/docker/….
DeviceMapper (RHEL) (block level)
BTRFS, ZFS (FS level)

9. The combination of NAMESPACE, CGROUP, CoW enables container-technology!!

12. Demo: Oracle Database 12.2.0.1 running in a docker container
Maria Colgans blog:
Oracle products for docker:

15. Why container clusters?

20. Demo:
A full container deployment cycle
in a container-cluster!