doctl-kubernetes-cluster:tldr:4ae4c

The command doctl kubernetes cluster upgrade ${cluster_name} is used to upgrade a Kubernetes cluster in DigitalOcean using the doctl command-line tool.

Here's a breakdown of the command:

• doctl: It is the command-line interface (CLI) tool provided by DigitalOcean for managing and interacting with their services.
• kubernetes: It is a subcommand of doctl that deals specifically with Kubernetes clusters.
• cluster: It is a further subcommand that deals with managing the clusters themselves.
• upgrade: It is the action that specifies the command to upgrade a Kubernetes cluster.
• ${cluster_name}: It is a placeholder variable that should be replaced with the actual name of the cluster you want to upgrade.

By executing this command, you trigger an upgrade for your Kubernetes cluster, which will apply the latest updates and patches provided by DigitalOcean, ensuring your cluster is running on the latest version of Kubernetes.