OSDC 2019 | Virtualisation in Docker, using KVM as Hypervisor by Kososochukwu Anayanwu
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The document discusses the implementation of virtual machines within containers using Kubernetes and related technologies. It includes details about necessary software installations, configuration steps, and commands for running containers and virtual machines. A demo link is provided for a visual demonstration of spinning up VMs inside of a container.
![FROM ubuntu:18.04
RUN apt-get update -y &&
DEBIAN_FRONTEND=noninteractive apt-get
install -y qemu-kvm libvirt-daemon-system
libvirt-clients bridge-utils vagrant &&
apt-get autoclean &&
apt-get autoremove &&
vagrant plugin install vagrant-libvirt
COPY startup.sh /
ENTRYPOINT ["/startup.sh" ]](https://image.slidesharecdn.com/vitualisationindocherusingkvmashypervisor-kosisochukwuanyanwu-190520144426/85/OSDC-2019-Virtualisation-in-Docker-using-KVM-as-Hypervisor-by-Kososochukwu-Anayanwu-16-320.jpg)
![FROM ubuntu:18.04
RUN apt-get update -y &&
DEBIAN_FRONTEND=noninteractive apt-get
install -y qemu-kvm libvirt-daemon-system
libvirt-clients bridge-utils vagrant &&
apt-get autoclean &&
apt-get autoremove &&
vagrant plugin install vagrant-libvirt
COPY startup.sh /
ENTRYPOINT ["/startup.sh" ]](https://image.slidesharecdn.com/vitualisationindocherusingkvmashypervisor-kosisochukwuanyanwu-190520144426/85/OSDC-2019-Virtualisation-in-Docker-using-KVM-as-Hypervisor-by-Kososochukwu-Anayanwu-17-320.jpg)
![FROM ubuntu:18.04
RUN apt-get update -y &&
DEBIAN_FRONTEND=noninteractive apt-get
install -y qemu-kvm libvirt-daemon-system
libvirt-clients bridge-utils vagrant &&
apt-get autoclean &&
apt-get autoremove &&
vagrant plugin install vagrant-libvirt
COPY startup.sh /
ENTRYPOINT ["/startup.sh" ]](https://image.slidesharecdn.com/vitualisationindocherusingkvmashypervisor-kosisochukwuanyanwu-190520144426/85/OSDC-2019-Virtualisation-in-Docker-using-KVM-as-Hypervisor-by-Kososochukwu-Anayanwu-18-320.jpg)
![FROM ubuntu:18.04
RUN apt-get update -y &&
DEBIAN_FRONTEND=noninteractive apt-get
install -y qemu-kvm libvirt-daemon-system
libvirt-clients bridge-utils vagrant &&
apt-get autoclean &&
apt-get autoremove &&
vagrant plugin install vagrant-libvirt
COPY startup.sh /
ENTRYPOINT ["/startup.sh" ]](https://image.slidesharecdn.com/vitualisationindocherusingkvmashypervisor-kosisochukwuanyanwu-190520144426/85/OSDC-2019-Virtualisation-in-Docker-using-KVM-as-Hypervisor-by-Kososochukwu-Anayanwu-19-320.jpg)
![FROM ubuntu:18.04
RUN apt-get update -y &&
DEBIAN_FRONTEND=noninteractive apt-get
install -y qemu-kvm libvirt-daemon-system
libvirt-clients bridge-utils vagrant &&
apt-get autoclean &&
apt-get autoremove &&
vagrant plugin install vagrant-libvirt
COPY startup.sh /
ENTRYPOINT ["/startup.sh" ]](https://image.slidesharecdn.com/vitualisationindocherusingkvmashypervisor-kosisochukwuanyanwu-190520144426/85/OSDC-2019-Virtualisation-in-Docker-using-KVM-as-Hypervisor-by-Kososochukwu-Anayanwu-20-320.jpg)
![FROM ubuntu:18.04
RUN apt-get update -y &&
DEBIAN_FRONTEND=noninteractive apt-get
install -y qemu-kvm libvirt-daemon-system
libvirt-clients bridge-utils vagrant &&
apt-get autoclean &&
apt-get autoremove &&
vagrant plugin install vagrant-libvirt
COPY startup.sh /
ENTRYPOINT ["/startup.sh" ]](https://image.slidesharecdn.com/vitualisationindocherusingkvmashypervisor-kosisochukwuanyanwu-190520144426/85/OSDC-2019-Virtualisation-in-Docker-using-KVM-as-Hypervisor-by-Kososochukwu-Anayanwu-21-320.jpg)
OSDC 2019 | Virtualisation in Docker, using KVM as Hypervisor by Kososochukwu Anayanwu
- 1. OSDC Berlin | May 14 - 15 2019
- 2. Kosisochukwu Anyanwu Software Engineer, Kinvolk Github: kosyfrances Twitter: kosyfrances Email: [email protected]
- 3. The Deep-stack Kubernetes Experts Engineering services and products for Kubernetes, containers, process management and Linux user-space + kernel Blog: kinvolk.io/blog Github: kinvolk Twitter: kinvolkio Email: [email protected]
- 8. Also known as Virtual Machine Monitor. A process that creates and runs virtual machines. Shares host machine’s resources. Examples: VirtualBox, VMware, KVM.
- 9. Kernel-based Virtual Machine Lets you turn Linux into a hypervisor
- 10. root@591532:/# egrep -c '(vmx|svm)' /proc/cpuinfo vmx – Intel VT-x, virtualisation support enabled in BIOS svm – AMD SVM,virtualisation enabled in BIOS. If the count is 0, then your CPU does not support hardware virtualisation.
- 11. Source: Docker
- 12. VM inside a Container?
- 13. Examples: You want a VM in a CI that runs everything in containers. Your OS runs everything in containers and you want a VM
- 14. How can this be done?
- 16. FROM ubuntu:18.04 RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils vagrant && apt-get autoclean && apt-get autoremove && vagrant plugin install vagrant-libvirt COPY startup.sh / ENTRYPOINT ["/startup.sh" ]
- 17. FROM ubuntu:18.04 RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils vagrant && apt-get autoclean && apt-get autoremove && vagrant plugin install vagrant-libvirt COPY startup.sh / ENTRYPOINT ["/startup.sh" ]
- 18. FROM ubuntu:18.04 RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils vagrant && apt-get autoclean && apt-get autoremove && vagrant plugin install vagrant-libvirt COPY startup.sh / ENTRYPOINT ["/startup.sh" ]
- 19. FROM ubuntu:18.04 RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils vagrant && apt-get autoclean && apt-get autoremove && vagrant plugin install vagrant-libvirt COPY startup.sh / ENTRYPOINT ["/startup.sh" ]
- 20. FROM ubuntu:18.04 RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils vagrant && apt-get autoclean && apt-get autoremove && vagrant plugin install vagrant-libvirt COPY startup.sh / ENTRYPOINT ["/startup.sh" ]
- 21. FROM ubuntu:18.04 RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils vagrant && apt-get autoclean && apt-get autoremove && vagrant plugin install vagrant-libvirt COPY startup.sh / ENTRYPOINT ["/startup.sh" ]
- 22. # startup.sh script set -eou pipefail chown root:kvm /dev/kvm service libvirtd start service virtlogd start exec "$@"
- 23. # startup.sh script set -eou pipefail chown root:kvm /dev/kvm service libvirtd start service virtlogd start exec "$@"
- 24. Remember to chmod +x startup.sh Build the container docker build -t vmindocker:latest -f Dockerfile .
- 25. Let us run the container.
- 26. docker run --privileged -it vmindocker bash "privileged" is pretty much an alias to "all the security features disabled"
- 27. docker run -it --device=/dev/kvm --device=/dev/net/tun -v /sys/fs/cgroup:/sys/fs/cgroup:rw --cap-add=NET_ADMIN --cap-add=SYS_ADMIN vmindocker bash
- 28. docker run -it --device=/dev/kvm --device=/dev/net/tun -v /sys/fs/cgroup:/sys/fs/cgroup:rw --cap-add=NET_ADMIN --cap-add=SYS_ADMIN vmindocker bash
- 29. docker run -it --device=/dev/kvm --device=/dev/net/tun -v /sys/fs/cgroup:/sys/fs/cgroup:rw --cap-add=NET_ADMIN --cap-add=SYS_ADMIN vmindocker bash
- 30. docker run -it --device=/dev/kvm --device=/dev/net/tun -v /sys/fs/cgroup:/sys/fs/cgroup:rw --cap-add=NET_ADMIN --cap-add=SYS_ADMIN vmindocker bash
- 31. docker run -it --device=/dev/kvm --device=/dev/net/tun -v /sys/fs/cgroup:/sys/fs/cgroup:rw --cap-add=NET_ADMIN --cap-add=SYS_ADMIN vmindocker bash
- 32. docker run -it --device=/dev/kvm --device=/dev/net/tun -v /sys/fs/cgroup:/sys/fs/cgroup:rw --cap-add=NET_ADMIN --cap-add=SYS_ADMIN vmindocker bash You’d also need to: mount -o remount,rw /sys mount -o remount,rw /proc/sys
- 33. Spin up a VM in the container. vagrant init generic/alpine37 vagrant up vagrant ssh # Check that it supports virtualisation root@59157fd1ed32:/# egrep -c '(vmx|svm)' /proc/cpuinfo # Spin up another VM inside of this VM :)
- 36. Kosisochukwu Anyanwu Github: kosyfrances Twitter: kosyfrances Email: [email protected] Kinvolk Blog: kinvolk.io/blog Github: kinvolk Twitter: kinvolkio Email: [email protected]