How to Use Linux Namespaces for Container Security

Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering · Jun 5, 2026 · 13m · transcript

Lucas and Luna dive into Linux namespaces, the kernel feature that underpins container isolation but is often misunderstood. They explain the seven namespace types, show how a misconfigured namespace can leak host resources, and walk through a practical example using 'unshare' to create a minimal container. The hosts also discuss auditing namespace configurations with 'lsns' and 'nsenter', and why namespaces alone aren't enough without cgroups and seccomp. A must-listen for sysadmins who want to understand container security from the kernel up. #Linux #Namespaces #ContainerSecurity #Sysadmin…