Got a great question over the weekend - reproduced below
We’re looking for a little Kubernetes / add-on upgrade guidance…
Our deployments are all embedded cluster installs using kURL with the following config:
apiVersion: kurl.sh/v1beta1 kind: Installer metadata: name: 'Lightup in a box' spec: kubernetes: version: "1.20.7" weave: version: "2.6.7" contour: version: "1.13.1" docker: version: "20.10.5" registry: version: "2.7.1" longhorn: version: "1.1.2" minio: version: "2020-01-25T02-50-51Z" ekco: version: "latest" enableInternalLoadBalancer: true nodeUnreachableToleration: "1m" kotsadm: version: "latest" prometheus: version: latest
The Kubernetes version is old so we’d like to bump this up probably to 1.24.4 and we’d like to bump up the version of the add-ons to updated versions as well. Questions…
Q1. Is there a way to perform these upgrades through the KOTS admin console? If not is the following the proper way to upgrade: https://kurl.sh/docs/install-with-kurl/upgrading ?
Q2. If the answer to Q1 is to use the kURL installer script to upgrade then the documentation says:
run it on any primary in the cluster.
Does this mean that the other nodes in the cluster will be upgraded as well and nothing needs to be run on them?
Q3. For the add-ons is there any guidance on what versions to use? E.g. any versions that are only compatible with specific Kubernetes versions? Or any versions that need to be used to work properly with other add-ons?
If there is any documentation that I missed for any of these questions then please point me in the right direction.
Thanks for the help.