gVisor: initial support for gVisor container runtime (#7661)
* Docker/Containerd: move downloads urls to containerd-common * gVisor: initial support for gVisor container runtime
This commit is contained in:
Cristian Calin
GitHub
parent
3fe6dbb65c
commit
282a27a07c
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@ -41,6 +41,7 @@
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* [Containerd](docs/containerd.md)
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* [CRI-O](docs/cri-o.md)
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* [Kata Containers](docs/kata-containers.md)
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* [gVisor](docs/gvisor.md)
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* Advanced
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* [Proxy](/docs/proxy.md)
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* [Downloads](docs/downloads.md)
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@ -0,0 +1,16 @@
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# gVisor
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[gVisor](https://gvisor.dev/docs/) is an application kernel, written in Go, that implements a substantial portion of the Linux system call interface. It provides an additional layer of isolation between running applications and the host operating system.
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gVisor includes an Open Container Initiative (OCI) runtime called runsc that makes it easy to work with existing container tooling. The runsc runtime integrates with Docker and Kubernetes, making it simple to run sandboxed containers.
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## Usage
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To enable gVisor you should be using a container manager that is compatible with selecting the [RuntimeClass](https://kubernetes.io/docs/concepts/containers/runtime-class/) such as `containerd`.
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Containerd support:
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```yaml
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container_manager: containerd
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gvisor_enabled: true
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```
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@ -1,2 +1,17 @@
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---
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containerd_package: 'containerd.io'
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# Fedora docker-ce repo
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docker_fedora_repo_base_url: 'https://download.docker.com/linux/fedora/{{ ansible_distribution_major_version }}/$basearch/stable'
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docker_fedora_repo_gpgkey: 'https://download.docker.com/linux/fedora/gpg'
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# CentOS/RedHat docker-ce repo
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docker_rh_repo_base_url: 'https://download.docker.com/linux/centos/{{ ansible_distribution_major_version }}/$basearch/stable'
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docker_rh_repo_gpgkey: 'https://download.docker.com/linux/centos/gpg'
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# Ubuntu docker-ce repo
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docker_ubuntu_repo_base_url: "https://download.docker.com/linux/ubuntu"
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docker_ubuntu_repo_gpgkey: 'https://download.docker.com/linux/ubuntu/gpg'
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docker_ubuntu_repo_repokey: '9DC858229FC7DD38854AE2D88D81803C0EBFCD88'
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# Debian docker-ce repo
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docker_debian_repo_base_url: "https://download.docker.com/linux/debian"
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docker_debian_repo_gpgkey: 'https://download.docker.com/linux/debian/gpg'
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docker_debian_repo_repokey: '9DC858229FC7DD38854AE2D88D81803C0EBFCD88'
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@ -35,6 +35,10 @@ oom_score = {{ containerd_oom_score }}
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{% if kata_containers_enabled %}
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.kata-qemu]
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runtime_type = "io.containerd.kata-qemu.v2"
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{% endif %}
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{% if gvisor_enabled %}
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runsc]
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runtime_type = "io.containerd.runsc.v1"
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{% endif %}
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[plugins."io.containerd.grpc.v1.cri".registry]
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[plugins."io.containerd.grpc.v1.cri".registry.mirrors]
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@ -15,20 +15,6 @@ docker_cgroup_driver: systemd
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yum_repo_dir: /etc/yum.repos.d
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# Fedora docker-ce repo
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docker_fedora_repo_base_url: 'https://download.docker.com/linux/fedora/{{ ansible_distribution_major_version }}/$basearch/stable'
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docker_fedora_repo_gpgkey: 'https://download.docker.com/linux/fedora/gpg'
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# CentOS/RedHat docker-ce repo
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docker_rh_repo_base_url: 'https://download.docker.com/linux/centos/{{ ansible_distribution_major_version }}/$basearch/stable'
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docker_rh_repo_gpgkey: 'https://download.docker.com/linux/centos/gpg'
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# Ubuntu docker-ce repo
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docker_ubuntu_repo_base_url: "https://download.docker.com/linux/ubuntu"
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docker_ubuntu_repo_gpgkey: 'https://download.docker.com/linux/ubuntu/gpg'
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docker_ubuntu_repo_repokey: '9DC858229FC7DD38854AE2D88D81803C0EBFCD88'
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# Debian docker-ce repo
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docker_debian_repo_base_url: "https://download.docker.com/linux/debian"
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docker_debian_repo_gpgkey: 'https://download.docker.com/linux/debian/gpg'
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docker_debian_repo_repokey: '9DC858229FC7DD38854AE2D88D81803C0EBFCD88'
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docker_bin_dir: "/usr/bin"
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# flag to enable/disable docker cleanup
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@ -0,0 +1,11 @@
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---
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- name: Converge
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hosts: all
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become: true
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vars:
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gvisor_enabled: true
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container_manager: containerd
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roles:
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- role: kubespray-defaults
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- role: containerd
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- role: gvisor
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@ -0,0 +1,17 @@
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{
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"cniVersion": "0.2.0",
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"name": "mynet",
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"type": "bridge",
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"bridge": "cni0",
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"isGateway": true,
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"ipMasq": true,
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"ipam": {
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"type": "host-local",
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"subnet": "172.19.0.0/24",
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"routes": [
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{
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"dst": "0.0.0.0/0"
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}
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]
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}
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}
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@ -0,0 +1,10 @@
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{
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"metadata": {
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"name": "gvisor1"
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},
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"image": {
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"image": "docker.io/library/hello-world:latest"
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},
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"log_path": "gvisor1.0.log",
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"linux": {}
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}
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{
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"metadata": {
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"name": "gvisor1",
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"namespace": "default",
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"attempt": 1,
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"uid": "hdishd83djaidwnduwk28bcsb"
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},
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"linux": {},
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"log_directory": "/tmp"
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}
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@ -0,0 +1,44 @@
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---
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driver:
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name: vagrant
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provider:
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name: libvirt
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options:
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driver: kvm
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lint: |
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set -e
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yamllint -c ../../../.yamllint .
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platforms:
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- name: ubuntu20
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box: generic/ubuntu2004
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cpus: 1
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memory: 1024
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nested: true
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groups:
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- kube_control_plane
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- name: centos8
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box: generic/centos8
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cpus: 1
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memory: 1024
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nested: true
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groups:
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- kube_control_plane
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provisioner:
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name: ansible
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env:
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ANSIBLE_ROLES_PATH: ../../../../
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config_options:
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defaults:
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callback_whitelist: profile_tasks
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lint:
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name: ansible-lint
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options:
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c: ../../../.ansible-lint
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inventory:
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group_vars:
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all:
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become: true
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verifier:
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name: testinfra
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lint:
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name: flake8
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@ -0,0 +1,48 @@
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---
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- name: Prepare generic
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hosts: all
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become: true
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roles:
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- role: kubespray-defaults
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- role: bootstrap-os
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- role: ../adduser
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user: "{{ addusers.kube }}"
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tasks:
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- include_tasks: "../../../../download/tasks/download_file.yml"
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vars:
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download: "{{ download_defaults | combine(downloads.cni) }}"
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- name: Prepare container runtime
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hosts: all
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become: true
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vars:
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container_manager: containerd
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kube_network_plugin: cni
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roles:
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- role: kubespray-defaults
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- role: ../network_plugin/cni
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- role: crictl
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tasks:
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- name: Copy test container files
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copy:
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src: "{{ item }}"
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dest: "/tmp/{{ item }}"
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owner: root
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mode: 0644
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with_items:
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- container.json
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- sandbox.json
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- name: Create /etc/cni/net.d directory
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file:
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path: /etc/cni/net.d
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state: directory
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owner: kube
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mode: 0755
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- name: Setup CNI
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copy:
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src: "{{ item }}"
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dest: "/etc/cni/net.d/{{ item }}"
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owner: root
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mode: 0644
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with_items:
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- 10-mynet.conf
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@ -0,0 +1,29 @@
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import os
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import testinfra.utils.ansible_runner
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testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
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os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
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def test_run(host):
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gvisorruntime = "/usr/local/bin/runsc"
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with host.sudo():
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cmd = host.command(gvisorruntime + " --version")
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assert cmd.rc == 0
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assert "runsc version" in cmd.stdout
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def test_run_pod(host):
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runtime = "runsc"
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run_command = "/usr/local/bin/crictl run --with-pull --runtime {} /tmp/container.json /tmp/sandbox.json".format(runtime)
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with host.sudo():
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cmd = host.command(run_command)
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assert cmd.rc == 0
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with host.sudo():
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log_f = host.file("/tmp/gvisor1.0.log")
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assert log_f.exists
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assert b"Hello from Docker!" in log_f.content
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@ -0,0 +1,20 @@
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---
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- name: gVisor | Download runsc binary
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include_tasks: "../../../download/tasks/download_file.yml"
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vars:
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download: "{{ download_defaults | combine(downloads.gvisor_runsc) }}"
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- name: gVisor | Download containerd-shim-runsc-v1 binary
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include_tasks: "../../../download/tasks/download_file.yml"
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vars:
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download: "{{ download_defaults | combine(downloads.gvisor_containerd_shim) }}"
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- name: gVisor | Copy binaries
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copy:
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src: "{{ local_release_dir }}/gvisor-{{ item }}"
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dest: "{{ bin_dir }}/{{ item }}"
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mode: 0755
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remote_src: yes
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with_items:
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- runsc
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- containerd-shim-runsc-v1
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@ -7,6 +7,14 @@ dependencies:
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- container-engine
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- kata-containers
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- role: container-engine/gvisor
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when:
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- gvisor_enabled
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- container_manager in ['docker', 'containerd']
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tags:
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- container-engine
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- gvisor
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- role: container-engine/crun
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when:
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- crun_enabled
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@ -53,6 +53,7 @@ kubeadm_version: "{{ kube_version }}"
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etcd_version: v3.4.13
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crun_version: 0.19
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kata_containers_version: 2.1.0
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gvisor_version: 20210518.0
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# gcr and kubernetes image repo define
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gcr_image_repo: "gcr.io"
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@ -108,6 +109,8 @@ crictl_download_url: "https://github.com/kubernetes-sigs/cri-tools/releases/down
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helm_download_url: "https://get.helm.sh/helm-{{ helm_version }}-linux-{{ image_arch }}.tar.gz"
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crun_download_url: "https://github.com/containers/crun/releases/download/{{ crun_version }}/crun-{{ crun_version }}-linux-{{ image_arch }}"
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kata_containers_download_url: "https://github.com/kata-containers/kata-containers/releases/download/{{ kata_containers_version }}/kata-static-{{ kata_containers_version }}-{{ ansible_architecture }}.tar.xz"
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# gVisor only supports amd64 and uses x86_64 to in the download link
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gvisor_download_url: "https://storage.googleapis.com/gvisor/releases/release/{{ gvisor_version }}/{{ ansible_architecture }}"
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nerdctl_download_url: "https://github.com/containerd/nerdctl/releases/download/v{{ nerdctl_version }}/nerdctl-{{ nerdctl_version }}-{{ ansible_system | lower }}-{{ image_arch }}.tar.gz"
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krew_download_url: "https://github.com/kubernetes-sigs/krew/releases/download/{{ krew_version }}/krew.tar.gz"
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@ -401,6 +404,22 @@ kata_containers_binary_checksums:
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2.0.4: 0
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2.1.0: 0
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gvisor_runsc_binary_checksums:
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arm:
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20210518.0: 0
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arm64:
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20210518.0: 0
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amd64:
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20210518.0: 907811e10576d31b6f63d2f91f1c3be2b2df94e222fb48eb509fce48cd6ae9e0
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gvisor_containerd_shim_binary_checksums:
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arm:
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20210518.0: 0
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arm64:
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20210518.0: 0
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amd64:
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20210518.0: d6deda79562cadf4fc98ccf1d6d9fd1d2dff3890b184c7b546167bd6eff241ec
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nerdctl_archive_checksums:
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arm:
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0.8.1: 27bdad3f9e2667620f70617c48d595c5c4e24a10fbcd00d31202cd8d571c9233
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@ -420,6 +439,8 @@ crictl_binary_checksum: "{{ crictl_checksums[image_arch][crictl_version] }}"
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helm_archive_checksum: "{{ helm_archive_checksums[image_arch][helm_version] }}"
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crun_binary_checksum: "{{ crun_checksums[image_arch][crun_version] }}"
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kata_containers_binary_checksum: "{{ kata_containers_binary_checksums[image_arch][kata_containers_version] }}"
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gvisor_runsc_binary_checksum: "{{ gvisor_runsc_binary_checksums[image_arch][gvisor_version] }}"
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gvisor_containerd_shim_binary_checksum: "{{ gvisor_containerd_shim_binary_checksums[image_arch][gvisor_version] }}"
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nerdctl_archive_checksum: "{{ nerdctl_archive_checksums[image_arch][nerdctl_version] }}"
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krew_archive_checksum: "{{ krew_archive_checksums[krew_version] }}"
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@ -715,6 +736,32 @@ downloads:
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groups:
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- k8s_cluster
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gvisor_runsc:
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enabled: "{{ gvisor_enabled }}"
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file: true
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version: "{{ gvisor_version }}"
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dest: "{{ local_release_dir }}/gvisor-runsc"
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sha256: "{{ gvisor_runsc_binary_checksum }}"
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url: "{{ gvisor_download_url }}/runsc"
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unarchive: false
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owner: "root"
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mode: 755
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groups:
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- k8s_cluster
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gvisor_containerd_shim:
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enabled: "{{ gvisor_enabled }}"
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file: true
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version: "{{ gvisor_version }}"
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dest: "{{ local_release_dir }}/gvisor-containerd-shim-runsc-v1"
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sha256: "{{ gvisor_containerd_shim_binary_checksum }}"
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url: "{{ gvisor_download_url }}/containerd-shim-runsc-v1"
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unarchive: false
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owner: "root"
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mode: 755
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groups:
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- k8s_cluster
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nerdctl:
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file: true
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enabled: "{{ nerdctl_enabled }}"
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@ -0,0 +1,33 @@
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---
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- name: gVisor | Create addon dir
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file:
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path: "{{ kube_config_dir}}/addons/gvisor"
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owner: root
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group: root
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mode: 0755
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recurse: true
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- name: gVisor | Templates List
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set_fact:
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gvisor_templates:
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- { name: runtimeclass-gvisor, file: runtimeclass-gvisor.yml, type: runtimeclass }
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- name: gVisort | Create manifests
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template:
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src: "{{ item.file }}.j2"
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dest: "{{ kube_config_dir}}/addons/gvisor/{{ item.file }}"
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with_items: "{{ gvisor_templates }}"
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register: gvisor_manifests
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when:
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- inventory_hostname == groups['kube_control_plane'][0]
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- name: gVisor | Apply manifests
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kube:
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name: "{{ item.item.name }}"
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kubectl: "{{ bin_dir}}/kubectl"
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resource: "{{ item.item.type }}"
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filename: "{{ kube_config_dir }}/addons/gvisor/{{ item.item.file }}"
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state: "latest"
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with_items: "{{ gvisor_manifests.results }}"
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when:
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- inventory_hostname == groups['kube_control_plane'][0]
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@ -0,0 +1,6 @@
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---
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kind: RuntimeClass
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apiVersion: node.k8s.io/v1{{ 'beta1' if kube_version is version('v1.20.0', '<') else '' }}
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metadata:
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name: gvisor
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handler: runsc
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@ -7,6 +7,13 @@ dependencies:
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- kata-containers
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- container-runtimes
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- role: kubernetes-apps/container_runtimes/gvisor
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when: gvisor_enabled
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tags:
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- apps
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- gvisor
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- container-runtimes
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- role: kubernetes-apps/container_runtimes/crun
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when: crun_enabled
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||||
tags:
|
||||
|
|
|
|||
|
|
@ -312,6 +312,12 @@
|
|||
msg: "kata_containers_enabled support only for containerd and crio-o. See https://github.com/kata-containers/documentation/blob/1.11.4/how-to/run-kata-with-k8s.md#install-a-cri-implementation for details"
|
||||
when: kata_containers_enabled
|
||||
|
||||
- name: Stop if gvisor_enabled is enabled when container_manager is not containerd
|
||||
assert:
|
||||
that: container_manager == 'containerd'
|
||||
msg: "gvisor_enabled support only compatible with containerd. See https://github.com/kubernetes-sigs/kubespray/issues/7650 for details"
|
||||
when: gvisor_enabled
|
||||
|
||||
- name: Stop if download_localhost is enabled for Flatcar Container Linux
|
||||
assert:
|
||||
that: ansible_os_family not in ["Flatcar Container Linux by Kinvolk"]
|
||||
|
|
|
|||
|
|
@ -237,6 +237,10 @@ container_manager: docker
|
|||
# When enabled, it requires `container_manager` different than Docker
|
||||
kata_containers_enabled: false
|
||||
|
||||
# Enable gVisor as an additional container runtime
|
||||
# gVisor is only supported with container_manager Docker or containerd
|
||||
gvisor_enabled: false
|
||||
|
||||
# Enable crun as additional container runtime
|
||||
# When enabled, it requires container_manager=crio
|
||||
crun_enabled: false
|
||||
|
|
|
|||
Loading…
Reference in New Issue