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Make Your Data Work For You
Container Runtimes
Nico Meisenzahl
April 2019
@panagenda Consultant.
@DockerRosenheim founder.
Blogger, speaker & IBM Champion.
Loves K8s, containers & automation. His desk is a
ping pong table.
Nico Meisenzahl
@nmeisenzahl
https://meisenzahl.org
nico@meisenzahl.org
https://panagenda.com/modernization
nico.meisenzahl@panagenda.com
Container Runtimes
• Container Runtimes make our life easier by
– abstracting OS calls
– adding additional features
• there are multiple types of Container runtimes
– low-level runtimes → let’s call them “runtime”
– high-level runtimes (not real runtimes ) → let’s call them “daemon” and “engine”
• I will only mention some Container Runtimes
3
runC
• lightweight & low-level Container Runtime for Linux/Unix
• hosted by Open Container Initiative (OCI)
• wraps and therefor abstracts linux tools like namespaces, chroot, …
• allows you to run containers. full stop.
• binary/CLI only (no daemon process)
• more details
– https://github.com/opencontainers/runc
4
containerd
• Container Daemon for Linux/Unix and Windows
• hosted by Cloud Native Computing Foundation (CNCF)
• uses runC and runhcs (Windows) to run containers
• adds lifecycle functions (Image/Storage management, Metrics, ...)
• daemon process with CLI
• not intended to be used by humans (think about Kubernetes)
• more details
– https://github.com/containerd/containerd
5
Docker
• full-featured Container Engine for Linux/Unix and Windows
• owned by Docker
• uses containerd to run containers
– since Docker 1.11
• adds features like
– Volumes, Networking, ...
– Orchestration (Swarm)
– API
– end-user Client and CLI
• runs as daemon process (dockerd)
6
Big Picture (Docker, containerd, runC)
http://www.studytrails.com/wp-content/uploads/2018/12/Docker_Architecture_hierarchy.png
7
But there are others, too
• rkt
• CRI-O
• runhcs
• gVisor
• Kata Containers
Still, this is not a complete list!
8
rkt “rocket”
• Container Engine (including runtime and daemon) for Linux/Unix
• started by CoreOS
• hosted by Cloud Native Computing Foundation (CNCF)
• built with security in mind
• own Image format (ACI) but can also run OCI and Docker Images
• the smallest unit is a pods
• CLI only (no daemon)
• more details
– https://github.com/rkt/rkt
9
CRI-O
• lightweight Container Daemon for Linux/Unix
• started by RedHat
• hosted by Cloud Native Computing Foundation (CNCF)
• Open Container Initiative-based (OCI) implementation of Kubernetes
Container Runtime Interface (CRI)
• supports runC and Kata Containers
• more details
– https://github.com/cri-o/cri-o
– https://github.com/kubernetes/community/blob/master
/contributors/devel/sig-node/container-runtime-interface.md
10
runhcs
• lightweight & low-level Container Runtime for Windows
• “runC for Windows”
• by Microsoft
• binary/CLI only (no daemon process)
• more details
– https://docs.microsoft.com/de-de/virtualization/windowscontainers/deploy-contai
ners/containerd
11
runsc aka gVisor
• low-level Container Runtime for Linux 64-bit
• adds a security layer by implementing a user-namespace kernel
• by Google
• used by Google for their Cloud offerings
• supported containerd (and therefore Docker and Kubernetes)
• more details
– https://cloud.google.com/blog/products/gcp/open-sourcing-gvisor-a-sandboxed-c
ontainer-runtime
12
kata-runtime aka Kata Containers
• low-level Container Runtime for Linux/Unix
• uses lightweight Virtual Machines to add another isolation layer
– based on Intel Clear Container and Hyper runV
– supports QEMU and Firekracker VMs
• supports containerd and CRI-O (and therefore Kubernetes)
• more details
– https://github.com/kata-containers/runtime
13
Questions?
Slides → http://slideshare.net/nmeisenzahl
14
Headquarters, Austria:
panagenda GmbH (Ltd.)
Schreyvogelgasse 3/10
AT 1010 Vienna
Phone: +43 1 89 012 89
Fax: +43 1 89 012 89-15
E-Mail: info@panagenda.com
Headquarters, Germany:
panagenda GmbH (Ltd.)
Lahnstraße 17
DE 64646 Heppenheim
Phone: +49 6252 67 939-00
Fax: +49 6252 67 939-16
E-Mail: info@panagenda.com
USA:
panagenda Inc.
60 State Street, Suite 700
MA 02109 Boston
Phone: +1 617 855 5961
Fax: +1 617 488 2292
E-Mail: info@panagenda.com
Germany:
panagenda Consulting GmbH (Ltd.)
Donnersbergstrasse 1
DE 64646 Heppenheim
Phone: +49 6252 67 939-86
Fax: +49 6252 67 939-16
E-Mail: info@panagenda.com
The Netherlands:
Trust Factory B.V.
11th Floor,
Koningin Julianaplein 10
NL 2595 AA The Hague
Phone: +31 70 80 801 96
E-Mail: info@trust-factory.com
© 2007-2015 panagenda
Make Your Data Work For You

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Docker Meetup Rosenheim: Container Runtimes

  • 1. Make Your Data Work For You Container Runtimes Nico Meisenzahl April 2019
  • 2. @panagenda Consultant. @DockerRosenheim founder. Blogger, speaker & IBM Champion. Loves K8s, containers & automation. His desk is a ping pong table. Nico Meisenzahl @nmeisenzahl https://meisenzahl.org nico@meisenzahl.org https://panagenda.com/modernization nico.meisenzahl@panagenda.com
  • 3. Container Runtimes • Container Runtimes make our life easier by – abstracting OS calls – adding additional features • there are multiple types of Container runtimes – low-level runtimes → let’s call them “runtime” – high-level runtimes (not real runtimes ) → let’s call them “daemon” and “engine” • I will only mention some Container Runtimes 3
  • 4. runC • lightweight & low-level Container Runtime for Linux/Unix • hosted by Open Container Initiative (OCI) • wraps and therefor abstracts linux tools like namespaces, chroot, … • allows you to run containers. full stop. • binary/CLI only (no daemon process) • more details – https://github.com/opencontainers/runc 4
  • 5. containerd • Container Daemon for Linux/Unix and Windows • hosted by Cloud Native Computing Foundation (CNCF) • uses runC and runhcs (Windows) to run containers • adds lifecycle functions (Image/Storage management, Metrics, ...) • daemon process with CLI • not intended to be used by humans (think about Kubernetes) • more details – https://github.com/containerd/containerd 5
  • 6. Docker • full-featured Container Engine for Linux/Unix and Windows • owned by Docker • uses containerd to run containers – since Docker 1.11 • adds features like – Volumes, Networking, ... – Orchestration (Swarm) – API – end-user Client and CLI • runs as daemon process (dockerd) 6
  • 7. Big Picture (Docker, containerd, runC) http://www.studytrails.com/wp-content/uploads/2018/12/Docker_Architecture_hierarchy.png 7
  • 8. But there are others, too • rkt • CRI-O • runhcs • gVisor • Kata Containers Still, this is not a complete list! 8
  • 9. rkt “rocket” • Container Engine (including runtime and daemon) for Linux/Unix • started by CoreOS • hosted by Cloud Native Computing Foundation (CNCF) • built with security in mind • own Image format (ACI) but can also run OCI and Docker Images • the smallest unit is a pods • CLI only (no daemon) • more details – https://github.com/rkt/rkt 9
  • 10. CRI-O • lightweight Container Daemon for Linux/Unix • started by RedHat • hosted by Cloud Native Computing Foundation (CNCF) • Open Container Initiative-based (OCI) implementation of Kubernetes Container Runtime Interface (CRI) • supports runC and Kata Containers • more details – https://github.com/cri-o/cri-o – https://github.com/kubernetes/community/blob/master /contributors/devel/sig-node/container-runtime-interface.md 10
  • 11. runhcs • lightweight & low-level Container Runtime for Windows • “runC for Windows” • by Microsoft • binary/CLI only (no daemon process) • more details – https://docs.microsoft.com/de-de/virtualization/windowscontainers/deploy-contai ners/containerd 11
  • 12. runsc aka gVisor • low-level Container Runtime for Linux 64-bit • adds a security layer by implementing a user-namespace kernel • by Google • used by Google for their Cloud offerings • supported containerd (and therefore Docker and Kubernetes) • more details – https://cloud.google.com/blog/products/gcp/open-sourcing-gvisor-a-sandboxed-c ontainer-runtime 12
  • 13. kata-runtime aka Kata Containers • low-level Container Runtime for Linux/Unix • uses lightweight Virtual Machines to add another isolation layer – based on Intel Clear Container and Hyper runV – supports QEMU and Firekracker VMs • supports containerd and CRI-O (and therefore Kubernetes) • more details – https://github.com/kata-containers/runtime 13
  • 15. Headquarters, Austria: panagenda GmbH (Ltd.) Schreyvogelgasse 3/10 AT 1010 Vienna Phone: +43 1 89 012 89 Fax: +43 1 89 012 89-15 E-Mail: info@panagenda.com Headquarters, Germany: panagenda GmbH (Ltd.) Lahnstraße 17 DE 64646 Heppenheim Phone: +49 6252 67 939-00 Fax: +49 6252 67 939-16 E-Mail: info@panagenda.com USA: panagenda Inc. 60 State Street, Suite 700 MA 02109 Boston Phone: +1 617 855 5961 Fax: +1 617 488 2292 E-Mail: info@panagenda.com Germany: panagenda Consulting GmbH (Ltd.) Donnersbergstrasse 1 DE 64646 Heppenheim Phone: +49 6252 67 939-86 Fax: +49 6252 67 939-16 E-Mail: info@panagenda.com The Netherlands: Trust Factory B.V. 11th Floor, Koningin Julianaplein 10 NL 2595 AA The Hague Phone: +31 70 80 801 96 E-Mail: info@trust-factory.com © 2007-2015 panagenda Make Your Data Work For You