Project Atomic - So You Thought You Knew Virtualization

A 20-minute talk introducing Project Atomic at the TechFest.sg

Transcript

1. And You Thought You Knew Virtualization Harish Pillay @harishpillay hpillay@redhat.com
2. In Twenty Minutes ... • What is Project Atomic? • History of Atomic – The OSTree / rpm-ostree projects – Cockpit – Docker – Orchestration • Pulling Pieces Together • Status • Join us
3. What is Project Atomic? • Project to provide the tools and patterns for creating an “Atomic” host • Community infrastructure for work going into Red Hat's Atomic efforts • Encompasses work on a number of projects: – rpm-ostree – Cockpit – Orchestration (geard, Kubernetes, Mesos) – Docker
4. But ... Why Project Atomic? • Provide a streamlined host for running Docker containers • Build hosts from trusted distributions • Provide orchestration and features for running containers at scale
5. History of Project Atomic History of Project Atomic
6. Ostree, rpm-ostree, cgroups ... • OStree initially developed for GNOME continuous by Colin Walters in 2011 • The rpm-ostree stuff came slightly later • Cgroups, known then as “process containers” was developed in 2006 by two Googlers, Paul Menage and Rohit Seth, and has been in the kernel since 2.6.24 • All of this was long before Docker
7. rpm-ostree • RPM goes one way: forward • Upgrades are difficult to roll back • No way to switch between distinct OSes, versions, etc. • Creates installable “tree” from RPMs • Not a package manager, but fills some of the role
8. Cockpit • Cockpit started prior to Atomic • Server manager for administering Linux servers via the Web browser • Doesn't interfere with normal admin tools – you can mix and match admin via both command line and web modes • Designed to be multi-server • http://cockpit-project.org/
9. Docker • Started early 2013 (1st release: 13 March) • Built on Linux Containers (LXC) which had been around for years – “BSD Jails” are a distant ancestor • Application-centric • Portable • Supports versioning • Reusable • Can provide ready-to-run services, not just bits for applications
10. Atomic & Orchestration • For small environments, use Cockpit • Initially targeted geard (also used w/OpenShift) – geard features will be ported into Kubernetes • Currently working on using Kubernetes and Mesos for orchestration – Kubernetes used for orchestrating Docker containers – Mesos may be used for additional scheduling/features
11. Pulling the Pieces Together Pulling the Pieces Together
12. Fedora Atomic Hosts • Work is being done through the Cloud Work Group & will be part of the Cloud Product • Currently slated to land with Fedora 21 • Fedora Infrastructure is finalizing a few pieces like signing & mirroring for rpm-ostree • See here for preliminary images: – http://bit.ly/atmf21a
13. CentOS 7 Atomic Hosts • Work is being done through CentOS Atomic SIG • Alpha-quality release due this week • Still work to merge into CentOS build system • Still to come: signing, etc. • http://cloud.centos.org/centos/7/devel/CentOS-7-Ato mic-CloudDockerHost.qcow2 • http://cloud.centos.org/centos/7/devel/
14. Orchestration • Work is still ongoing with Kubernetes and Mesos – expect to see that land in Atomic builds as it matures • The geard stuff will largely be ported into Kubernetes • Cockpit has its own roadmap here: – http://bit.ly/atmcockpit
15. Links and Pointers • Website: projectatomic.io • Github: github.com/projectatomic • G+: plus.google.com/+ProjectatomicIo • FB: facebook.com/projectatomic • Twitter: @projectatomic • IRC: freenode.net #atomic • Mailing Lists: http://www.projectatomic.io/community/
16. Come join us!
17. Comments? Questions? hpillay@redhat.com Twitter: @harishpillay