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Add cri-o configuration information

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Adds section on how to use drop-in directory to modify cri-o
configuration that will persist across version updates.
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Bradley G Smith 2024-08-28 16:14:46 -07:00
parent 228c63b9c6
commit ee8c798dc3
1 changed files with 6 additions and 0 deletions
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modules/ROOT/pages/using-kubernetes-cri-o.adoc
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@ -22,6 +22,12 @@ The **C**ontainer **R**untime **I**nterface(link:https://kubernetes.io/docs/conc
CRI-O is available in Fedora repositories as versioned rpms in parallel with Kubernetes. If kubernetes1.30 is installed and CRI-O is the designated CRI implementation, then cri-o1.30 needs to be installed.
=== Configuration
CRI-O configuration options are set in `/etc/crio/crio.conf`. This file is managed by rpm and therefore replaced when a versioned CRI-O package is replaced by another package (not counting patch level updates) such as when the cri-o1.30 rpm is replaced by the cri-o1.31 rpm. One method to create and manage custom CRI-O conifiguration settings that persist across updates is to take advantage of CRI-O support for a drop-in configuration. The default drop-in subdirectory is `/etc/crio/crio.conf.d/`. Settings in configuration files placed in the drop-in directory take precedence over the same setting in the default configuration file `/etc/crio/crio.conf`. If multiple drop-in configuration files have the same setting, the file that is sorted last in lexical order will have precedence. See link:https://github.com/cri-o/cri-o/blob/main/docs/crio.conf.d.5.md[crio.conf.d] man file for additional information.
See xref:using-kubernetes-kubelet.adoc[Resilient kubelet configuration] for related `kublet` configuration options.
[[sect-cri-tools]]
== CRI-Tools