Linux (Pseudo)Filesystems: The Hidden Backbone of Cloud Native

Ever wondered what’s really going on under the hood of your containers or nodes? Linux (pseudo)filesystems like procfs (/proc), sysfs (/sys), cgroupfs etc. quietly power the entire cloud-native world. In this talk, we’ll explore what these filesystems actually do.. how overlayfs enables container layers, how tmpfs keeps things fast, and why securityfs and efivarfs matter. I'll give a brief intro in filesystems overall, then provide some deep dive info for selected pseudo-FS, their purpose and show how they make modern cloud systems tick.