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Update CRI-O docs to the latest configuration 

This patch updates the CRI-O documentation to the latest available
version. It also adds a dedicated cgroup driver section to mention that
the configuration has to be in sync.

Signed-off-by: Sascha Grunert <sgrunert@suse.com>
This commit is contained in:
Sascha Grunert 2021-01-14 09:38:13 +01:00
parent a773e51b64
commit ff9bcd4d42
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1 changed files with 25 additions and 10 deletions
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35
content/en/docs/setup/production-environment/container-runtimes.md
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@ -268,13 +268,12 @@ Use the following commands to install CRI-O on your system:
{{< note >}}
The CRI-O major and minor versions must match the Kubernetes major and minor versions.
For more information, see the [CRI-O compatibility matrix](https://github.com/cri-o/cri-o).
For more information, see the [CRI-O compatibility matrix](https://github.com/cri-o/cri-o#compatibility-matrix-cri-o--kubernetes).
{{< /note >}}
Install and configure prerequisites:
```shell
# Create the .conf file to load the modules at bootup
cat <<EOF | sudo tee /etc/modules-load.d/crio.conf
overlay
@ -307,9 +306,9 @@ to the appropriate value from the following table:
<br />
Then, set `$VERSION` to the CRI-O version that matches your Kubernetes version.
For instance, if you want to install CRI-O 1.18, set `VERSION=1.18`.
For instance, if you want to install CRI-O 1.20, set `VERSION=1.20`.
You can pin your installation to a specific release.
To install version 1.18.3, set `VERSION=1.18:1.18.3`.
To install version 1.20.0, set `VERSION=1.20:1.20.0`.
<br />
Then run
@ -343,9 +342,9 @@ To install on the following operating systems, set the environment variable `OS`
<br />
Then, set `$VERSION` to the CRI-O version that matches your Kubernetes version.
For instance, if you want to install CRI-O 1.18, set `VERSION=1.18`.
For instance, if you want to install CRI-O 1.20, set `VERSION=1.20`.
You can pin your installation to a specific release.
To install version 1.18.3, set `VERSION=1.18:1.18.3`.
To install version 1.20.0, set `VERSION=1.20:1.20.0`.
<br />
Then run
@ -377,9 +376,9 @@ To install on the following operating systems, set the environment variable `OS`
<br />
Then, set `$VERSION` to the CRI-O version that matches your Kubernetes version.
For instance, if you want to install CRI-O 1.18, set `VERSION=1.18`.
For instance, if you want to install CRI-O 1.20, set `VERSION=1.20`.
You can pin your installation to a specific release.
To install version 1.18.3, set `VERSION=1.18:1.18.3`.
To install version 1.20.0, set `VERSION=1.20:1.20.0`.
<br />
Then run
@ -400,7 +399,7 @@ sudo zypper install cri-o
{{% tab name="Fedora" %}}
Set `$VERSION` to the CRI-O version that matches your Kubernetes version.
For instance, if you want to install CRI-O 1.18, `VERSION=1.18`.
For instance, if you want to install CRI-O 1.20, `VERSION=1.20`.
You can find available versions with:
```shell
@ -424,10 +423,26 @@ sudo systemctl daemon-reload
sudo systemctl start crio
```
Refer to the [CRI-O installation guide](https://github.com/kubernetes-sigs/cri-o#getting-started)
Refer to the [CRI-O installation guide](https://github.com/cri-o/cri-o/blob/master/install.md)
for more information.
#### cgroup driver
CRI-O uses the systemd cgroup driver per default. To switch to the `cgroupfs`
cgroup driver, either edit `/etc/crio/crio.conf` or place a drop-in
configuration in `/etc/crio/crio.conf.d/02-cgroup-manager.conf`, for example:
```toml
[crio.runtime]
conmon_cgroup = "pod"
cgroup_manager = "cgroupfs"
```
Please also note the changed `conmon_cgroup`, which has to be set to the value
`pod` when using CRI-O with `cgroupfs`. It is generally necessary to keep the
cgroup driver configuration of the kubelet (usually done via kubeadm) and CRI-O
in sync.
### Docker