DOKSの1.26.X系がリリースされたようなので適用。
doctl kubernetes cluster list
ID Name Region Version Auto Upgrade Status Node Pools
16241d5b-6e03-4ded-9da9-cbe96abcdb78 dok8s sgp1 1.26.3-do.0 false running dok8s-poolkubectl version --short
Flag --short has been deprecated, and will be removed in the future. The --short output will become the default.
Client Version: v1.26.3
Kustomize Version: v4.5.7
Server Version: v1.26.3
kubectl get node -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
dok8s-pool-q525i Ready <none> 3d4h v1.26.3 10.104.0.3 139.59.124.116 Debian GNU/Linux 11 (bullseye) 6.0.0-0.deb11.6-amd64 containerd://1.6.14
dok8s-pool-q525v Ready <none> 3d4h v1.26.3 10.104.0.2 139.59.116.113 Debian GNU/Linux 11 (bullseye) 6.0.0-0.deb11.6-amd64 containerd://1.6.14
PGO5.3.1はまだ正式に1.26系サポートしていないが動作した。