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  • kata-agent + libcontainer

    root@ubuntu:/mnt/kata# ls
    bin  boot  dev  etc  home  lib  lost+found  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
    root@ubuntu:/mnt/kata# find . -name libcontainer
    root@ubuntu:/mnt/kata# find . -name libcontainer*
    root@ubuntu:/mnt/kata# find . -name kata-agent
    ./usr/bin/kata-agent
    root@ubuntu:/mnt/kata# nm -C ./usr/bin/kata-agent | grep libcontainer
    00000000013290c0 b github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer/apparmor.ErrApparmorNotEnabled
    0000000000911f90 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer/apparmor.init
    0000000001349509 b github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer/apparmor.initdone.
    00000000009153a0 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.awaitFifoOpen
    0000000000933070 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.awaitFifoOpen.func1
    000000000092e6e0 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.bindMountDeviceNode
    0000000000927260 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.(*Boolmsg).Len
    0000000000926fc0 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.(*Boolmsg).Serialize
    0000000000926fa0 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.(*Bytemsg).Len
    0000000000926d30 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.(*Bytemsg).Serialize
    0000000001327fe8 b github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.capabilityMap
    0000000000922940 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.Cgroupfs
    00000000009228c0 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.cgroupfs2
    0000000000933140 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.cgroupfs2.func1
    00000000009331d0 t github.com/kata-containers/agent/vendor/github.com/opencontainers/runc/libcontainer.Cgroupfs.func1

    runC 实现

    runC可以启动并管理符合OCI标准的容器。简单地说,runC需要利用OCI bundle创建一个独立的运行环境,并执行指定的程序。在Linux平台上,这个环境就是指各种类型的Namespace以及Capability等等配置

    代码结构

    runC由Go语言实现,当前(2018.12)最新版本是v1.0.0-rc6,代码的结构可分为两大块,一是根目录下的go文件,对应各个runC命令,二是负责创建/启动/管理容器的libcontainer,可以说runC的本质都在libcontainer

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  • 原文地址:https://www.cnblogs.com/dream397/p/13895632.html
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