NamespaceWhat it isolatesWhat the process seesPIDProcess IDsOwn process tree, starts at PID 1MountFilesystem mount pointsOwn mount table, can have different rootNetworkNetwork interfaces, routingOwn interfaces, IP addresses, portsUserUID/GID mappingCan be root inside, nobody outsideUTSHostnameOwn hostnameIPCSysV IPC, POSIX message queuesOwn shared memory, semaphoresCgroupCgroup root directoryOwn cgroup hierarchyTimeSystem clocks (monotonic, boot)Own system uptime and clock offsetsNamespaces are what Docker containers use. When you run a container, it gets its own PID namespace (cannot see host processes), its own mount namespace (own filesystem view), its own network namespace (own interfaces), and so on.
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，这一点在同城约会中也有详细论述
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我们可以去宽容人，却不可视他人宽容为理所当然。宽容他人，是放过别人；收敛自己，是成全自己，多了温和，多了尊重，多了友谊，多了互帮互利。时时自牧，你无需向任何人索取宽容，因为你早已让身边的人甘愿以温柔相待。