Upgrade Clusters
INFO
To learn about Clusters and the shared responsibility model, see Clusters.
To upgrade the Kubernetes version of a cluster, first upgrade the control plane (i.e. the Cluster itself in meltcloud) and then gradually upgrade the Machine Pools.
INFO
Keep in mind the Kubernetes version skew policy – more specifically, the control plane version can be up to three minor versions ahead of the Machine Pools. For example, control plane version 1.33 and Machine Pool version 1.30 is possible, whereas control plane on 1.34 and Machine Pools on 1.30 is not. meltcloud will not allow you to violate the policy and tell you which Machine Pools are too old.
Upgrade a Cluster to a Newer Minor Version
WARNING
Upgrades of the control plane are mostly downtime-free due to the highly available nature of the Hosted control plane. However, some short downtimes are generally possible.
- Go to Clusters → your Cluster name → Actions → Edit Cluster
- Select the desired Kubernetes minor version.
- Click Roll out
Wait some minutes for your cluster to upgrade and become ready.
Next, you will want to upgrade the Machine Pools.