Linux Namespaces: processes isolation mechanism powering containers
Understanding Linux Namespaces
Linux namespaces provide process isolation by limiting their view of system components, forming the foundation of containerization. The eight namespace types (time, ipc, cgroup, user, net, uts, mnt, pid) each virtualize different system aspects. Commands like lsns list namespaces, unshare creates new ones, and nsenter enters existing namespaces. Docker containers demonstrate practical namespace usage by isolating network, filesystem, process, hostname, and IPC views while sharing time, cgroup, and user namespaces with the host system.
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Understanding Linux Namespaces