如何使用nsenter 进入Docker容器

来源：互联网发布：centos 6.7 安装教程编辑：程序博客网时间：2024/06/05 10:03

安装nsenter

docker run -v /usr/local/bin:/target jpetazzo/nsenter

solumuser@ubuntu14044:~/devstack$ docker run -v /usr/local/bin:/target jpetazzo/nsenterUnable to find image 'jpetazzo/nsenter:latest' locallylatest: Pulling from jpetazzo/nsenter0e0f419fdc20: Pull complete 91a0e4c51245: Pull complete 661a5335f074: Pull complete 0e11d298ab23: Pull complete 06fbbd71fa48: Pull complete 188740f5f5e6: Pull complete a2973bb5c627: Pull complete f11e19d48f83: Pull complete bff1c547022e: Pull complete 51a6e49096e7: Pull complete 311ff5fb25c1: Pull complete 2fe219367210: Pull complete e7b0665269ca: Pull complete 307e5c0ca25c: Pull complete 6033a7753dc8: Pull complete e28b87694a35: Pull complete e3eb825e4e57: Pull complete 4767c77d2871: Pull complete a2bd5169402e: Pull complete 3b642f673420: Pull complete Digest: sha256:8c35f1452bc02dc3432862b869a2f35cf6384c6e28c28ede0f5c76f9891e2e9bStatus: Downloaded newer image for jpetazzo/nsenter:latestInstalling nsenter to /targetInstalling docker-enter to /targetInstalling importenv to /target

先计算容器的PID：

PID=$(docker inspect --format {{.State.Pid}} <container_name_or_ID>)

solumuser@ubuntu14044:~/devstack$ docker psCONTAINER ID        IMAGE                                                                                                         COMMAND                CREATED             STATUS              PORTS               NAMESe6551c6bf7e7        98b7ac1054f74e97840618198d699cec-java_app-20160517t175809236072150-1713a757d34ca340211473f322e0fc2406d3f65d   "/bin/bash -c 'sourc   16 hours ago        Up 16 hours                             nova-148a593f-d75c-4ac8-8cad-95c2ee7ffefd   solumuser@ubuntu14044:~/devstack$ PID=$(docker inspect --format {{.State.Pid}} nova-148a593f-d75c-4ac8-8cad-95c2ee7ffefd )

进入容器：

nsenter --target $PID --mount --uts --ipc --net --pid

solumuser@ubuntu14044:~/devstack$ sudo nsenter --target $PID --mount --uts --ipc --net --pidroot@instance-0000000e:/# pwd/root@instance-0000000e:/# lsapp  bin  boot  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  solum  srv  sys  tmp  usr  var

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