![]() ![]() ![]() Mar 2014: NFS virtualization (client and server) support.Implemented in kernel/pid_namespace.c PID namespaces. What started as just a hobby for Linus Torvalds became the kernel of the. The network namespace is represented by struct net (defined in include/net/net_namespace.h). Linux was first released as a free operating system kernel on September 17th, 1991. Sep 2007: NET namespaces A network namespace is logically another copy of the network stack, with its own routes, firewall rules, and network interfaces.The implementation of user namespaces allows a process to have it’s own set of users and in particular to allows a process root privileges inside a container, but not outside. Biederman’s 2008 user namespaces patches being arguably the most complex and one of the most important namespaces in the context of containers. Kernel namespaces are another key part of a container solution, with Red Hatter Eric W. ![]() The result was generic process containers, which were later renamed control groups, or cgroups, to reflect the fact that “this code is an important part of a container solution… it’s far from the whole thing.” Cgroups allow processes to be grouped together, and ensure that each group gets a share of memory, CPU and disk I/O preventing any one container from monopolizing any of these resources. It was Paul Menage’s approach in 2006 of adapting the cpusets mechanism already in the mainline kernel that really moved containerization on Linux forward, requiring minimally intrusive changes with little impact on performance, code quality, complexity, and future compatibility.Cpusets provide a mechanism for assigning a set of CPUs and Memory Nodes to a set of tasks. Usually, each stable version continues to backport bug fixes from the mainline until the next stable version is released. Linux kernels have different support levels depending on the version. Cpusets appeared in version 2.6.12 of the Linux kernel. It was conceived and created in 1991 by Linus Torvalds.Mount namespaces (mount points, filesystems etc.). ![]()
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