The article discusses the importance and evolution of swap support for Linux nodes in Kubernetes. Initially introduced in Alpha stage in version 1.22, swap support on Linux nodes was later promoted to Beta in version 1.28, bringing significant improvements and new capabilities. The article explains how to configure and monitor swap usage, as well as provides best practices for using swap in a Kubernetes cluster, such as disabling swap for system-critical daemons and using a dedicated disk for swap. Future plans include enhancing swap functionality with better eviction mechanisms, extended API support, and increased customizability.