3 K3s Advanced Configurations and Management

This chapter covers more advanced configurations for your K3s clusters. By default, K3s includes a load balancer called KlipperLB, but it has some limitations. For example, you don't have to repeat port while creating a service, and it affects the way that you use a regular load balancer and NodePort service. It works well for simple deployments. In case you need another load balancer instead of Klipper, we cover how to install MetalLB, a bare-metal load balancer. Then, we cover how to use advanced storage configuration to support read/write access modes for storage volumes with Longhorn, substituting the default local storage class provided by K3s. After this, we will do some common cluster management, including upgrade K3s, backup, and restoring the cluster. Finally, the chapter ends by explaining how to use K3sup, a powerful tool, to install K3s. With this tool, you can simplify the workflow of creating your K3s cluster.

In this chapter...