stillster.blogg.se - march 2022

Docker run image mount volume how to#
Docker run image mount volume apk#

Docker run image mount volume apk#

if ] then apk add e2fsprogs & truncate -s 20G /tmp/disk.img & mkfs.ext4 /tmp/disk.img & mount /tmp/disk.img /var/lib/docker fi & dockerd-entrypoint.sh securit圜ontext: name: docker image: docker:20.10-dind command: args: An example of a Pod using such a setup was contributed, and is reproduced below: Kubernetes supports a variant of, which allows for memdisk-backed storage - the. Thanks to various community contributions (see issue references below) the following options, with various trade-offs have been uncovered: Use a memory backed volumeįor small workloads (small container images, without much generated filesystem load), a memory-backed volume is sufficient. Special measures must be taken when running DinD-powered workloads in Kata Containers. the docker images tagged *-dind/ *-dind-rootless), docker fill fail to start (or even worse, silently pick a worse storage driver like vfs) when started in a Kata Container.

While virtio-fs is normally an excellent choice, in the case of DinD workloads virtio-fs causes an issue - it cannot be used as a "upper layer" of overlayfs without a custom patch.Īs /var/lib/docker is a VOLUME specified by DinD (i.e. KataShared mount types are powered by, a marked improvement over virtio-9p, thanks to PR #1016. # mount kataShared on / type virtiofs (rw,relatime,dax) Running docker in a Kata Container implies creating Docker containers from inside a container managed by containerd (or another supported container manager), as illustrated below: Kata Containers 2.x allows only supported runtimes (such as containerd). While normally DinD refers to running docker from inside a Docker container,

docker image Docker Hub page (this page lists the -dind releases).

You can learn more about about Docker-in-Docker at the following links: Backgroundĭocker in Docker ("DinD") is the colloquial name for the ability to run docker from inside a container. Requirementsįollow the Kata Containers installation guide to Install Kata Containers on your Kubernetes cluster.

Note: While in other environments this might be described as "Docker in Docker", the new architecture of Kata 2.x means Docker can no longer be used to create containers using a Kata Containers runtime. This document describes the why and how behind running Docker in a Kata Container.

Docker run image mount volume how to#

How to run Docker in Docker with Kata Containers