Containers without docker
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This document discusses containers without Docker. It introduces alternatives to Docker like Runc, Podman, Buildah and Img for launching and building containers. It also discusses deploying Kubernetes using CRI-O as a container runtime instead of Docker. Key points covered include why consider non-Docker options, what containers and images are, and how to launch containers without Docker on Linux, Windows and in Kubernetes. Alternatives provide valuable choices and the future is seen as Kubernetes with CRI-O rather than Docker.
![[DllImport("vmcompute.dll", PreserveSig = false, ExactSpelling = true)]
IntPtr computeSystem;
h.CreateComputeSystem(id, JsonHelper.ToJson(hcsSettings), IntPtr.Zero, out computeSystem);
return Container.Initialize(id, computeSystem, settings.KillOnClose, h);](https://image.slidesharecdn.com/containerswithoutdocker-180316144435/85/Containers-without-docker-36-320.jpg)
Containers without docker
- 3. WHOAMI?
- 4. Learn via Interactive Browser-Based Labs Katacoda.com
- 6. Agenda • Why? • What is a Container? • Launching a Container without Docker • Building Containers without Docker • Deploying Kubernetes using CRI-O
- 7. Docker - An open platform for distributed applications for developers and sysadmins.
- 8. Got us to agree on something!
- 9. Docker isn’t the only container runtime!
- 10. Docker is no longer about building/launching Containers. Runc and Containerd donated to Linux Foundation and CNCF “Docker” renamed to Moby
- 11. Docker on a CI/CD Server • Need Privileged Permissions • Install Docker • Run daemon on host • Provide access to Docker Server to CI Runner
- 13. Linux Kernel?
- 15. What is a container? https://www.katacoda.com/courses/co ntainers-without-docker/what-is-a- container
- 16. https://github.com/lizrice/containers-from-scratch
- 20. Launching Containers with Runc https://www.katacoda.com/courses/co ntainers-without-docker/running- containers-with-runc
- 21. Launching Containers with Podman https://www.katacoda.com/courses/co ntainers-without-docker/running- containers-with-podman
- 22. What is an image? https://www.katacoda.com/courses/co ntainers-without-docker/what-is-a- image
- 24. Building Images with Buildah and Img https://www.katacoda.com/courses/containers-without- docker/building-container-images-with-buildah https://www.katacoda.com/courses/containers-without- docker/building-container-images-with-img
- 25. What about Container Networks?
- 28. Launching Containers with Kubernetes without Docker?
- 31. Getting Started With CRI-O and Kubeadm https://www.katacoda.com/courses/co ntainers-without-docker/getting- started-with-kubeadm-crio
- 32. What about Windows Containers?
- 35. var cs = new ContainerSettings { SandboxPath = path, Layers = layers, KillOnClose = true, NetworkId = HostComputeService.FindNatNetwork(), }; using (var container = HostComputeService.CreateContainer(id.ToString(), cs)) { Console.Out.WriteLine("starting container"); Console.Out.Flush(); container.Start(); var si = new ProcessStartInfo { CommandLine = command }; using (var process = container.CreateProcess(si)) { Console.Out.Write(process.StandardOutput.ReadToEnd()); process.WaitForExit(5000); Console.Out.WriteLine("process exited with {0}", process.ExitCode); } container.Shutdown(Timeout.Infinite); }
- 36. [DllImport("vmcompute.dll", PreserveSig = false, ExactSpelling = true)] IntPtr computeSystem; h.CreateComputeSystem(id, JsonHelper.ToJson(hcsSettings), IntPtr.Zero, out computeSystem); return Container.Initialize(id, computeSystem, settings.KillOnClose, h);
- 38. Done! • Important to consider alternatives, leads to different approaches and innovation • Podman, Buildah, Img provide valuable choices • Kubernetes and CRI-O will be the future…
Editor's Notes
- #42: tom's kitchen