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docs: fix markdown issues in how-to-run-docker-with-kata.md

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Some links in how-to-run-docker-with-kata.md is not correct,
and some typos.

Fixes: #3929

Signed-off-by: bin <bin@hyper.sh>
This commit is contained in:
bin 2022-03-22 22:10:43 +08:00
parent f194c8da1b
commit 7743486413
1 changed files with 3 additions and 3 deletions
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6
docs/how-to/how-to-run-docker-with-kata.md
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@ -48,9 +48,9 @@ Running Docker containers Kata Containers requires care because `VOLUME`s specif
kataShared on / type virtiofs (rw,relatime,dax)
```
`kataShared` mount types are powered by [`virtio-fs`][virtio-fs], a marked improvement over `virtio-9p`, thanks to [PR #1016](https://github.com/kata-containers/runtime/pull/1016). 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](http://lists.katacontainers.io/pipermail/kata-dev/2020-January/001216.html).
`kataShared` mount types are powered by [`virtio-fs`](https://virtio-fs.gitlab.io/), a marked improvement over `virtio-9p`, thanks to [PR #1016](https://github.com/kata-containers/runtime/pull/1016). 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](http://lists.katacontainers.io/pipermail/kata-dev/2020-January/001216.html).
As `/var/lib/docker` is a `VOLUME` specified by DinD (i.e. 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. Special measures must be taken when running DinD-powered workloads in Kata Containers.
As `/var/lib/docker` is a `VOLUME` specified by DinD (i.e. the `docker` images tagged `*-dind`/`*-dind-rootless`), `docker` will fail to start (or even worse, silently pick a worse storage driver like `vfs`) when started in a Kata Container. Special measures must be taken when running DinD-powered workloads in Kata Containers.
## Workarounds/Solutions
@ -58,7 +58,7 @@ Thanks to various community contributions (see [issue references below](#referen
### Use a memory backed volume
For small workloads (small container images, without much generated filesystem load), a memory-backed volume is sufficient. Kubernetes supports a variant of [the `EmptyDir` volume][k8s-emptydir], which allows for memdisk-backed storage -- the [the `medium: Memory` ][k8s-memory-volume-type]. An example of a `Pod` using such a setup [was contributed](https://github.com/kata-containers/runtime/issues/1429#issuecomment-477385283), and is reproduced below:
For small workloads (small container images, without much generated filesystem load), a memory-backed volume is sufficient. Kubernetes supports a variant of [the `EmptyDir` volume](https://kubernetes.io/docs/concepts/storage/volumes/#emptydir), which allows for memdisk-backed storage -- the the `medium: Memory`. An example of a `Pod` using such a setup [was contributed](https://github.com/kata-containers/runtime/issues/1429#issuecomment-477385283), and is reproduced below:
```yaml
apiVersion: v1