Minimalist Operating Systems for Containers

A brief introduction to Linux Containers and explanation of the available Minimalist OSes targeted to run containers.

* http://www.meetup.com/Arapiraca-Dev-Meetup/events/222709815/
* http://www.meetup.com/maceio-dev-meetup/events/222550701/
* https://www.youtube.com/watch?v=i4sO-W7ack8

Transcript

1. MINIMALIST OPERATING SYSTEMS FOR CONTAINERS @endersonmaia
2. You’ll see What’s a container Container Implementations Containers vs. VMs Minimalist OSes for Containers Docker and its Containers Images
3. What’s a container ? Operating System Virtualization Isolation processes filesystem network users "chroot on steroids"
4. Container Implementations chroot (1982) FreeBSD Jail (2000) Linux-VServer (2001) OpenVZ (2005) LinuX Containers (LXC) (2008) Docker (2013) rkt ( 2014) FONTE: HTTP://EN.WIKIPEDIA.ORG/WIKI/OPERATING-SYSTEM-LEVEL_VIRTUALIZATION
5. Containers vs. VMs Less overhead Faster start Greater density Portability *
6. Containers vs. VMs
7. Docker Image Management Resource, Filesystem (UnionFS) & Network Isolation Resource Control (cgroups) Sharing Process Management
8. DEMO
9. Container Host OSes Small footprint Atomic updates No package management Everything* runs on a container Tools for cluster management & containers announcement and discovery *
10. boot2docker Lightweight Linux for Docker based on Tiny Core Linux VirtualBox 27MB and boots in ~5s
11. docker, rkt etcd fleet flannel alpha, beta, stable channels
12. safe-rollback kexec
15. Fedora/RedHat SELinux rpm-ostree RedHat Enterprise Registry Cockpit
16. Snappy Ubuntu Core the same image-based transactional frameworks snappy apps (like packages)
17. Snappy Ubuntu Core
18. Docker as PID 1 20MB
20. Optimized for vSphere supports Docker, rkt, and the Pivotal Garden container specifications Project Lightwave
21. Docker Container Images
22. Docker Language Stack c/c++ (gcc) clojure go (golang) hy (hylang) rails and ruby java node perl php python …
23. DEMO
24. QUESTIONS ? @endersonmaia