# docker run -it centos /bin/bash [root@d7e7ac1cbca2 /]# touch test [root@d7e7ac1cbca2 /]# ls anaconda-post.log bin dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys test tmp usr var # docker commit -m "add a file" -a "kafeikele" de6 centos_copy 5d318afa9e6f7fdb755db97e29e3860b752f24b0b50e6bfa0b7e457450802c0e # docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE centos_copy latest 5d318afa9e6f 13 seconds ago 196.7 MB
https://openvz.org/Download/templates/precreated #cat centos-7-x86_64-minimal.tar.gz.crdownload | docker import - centos:latest
# docker images centos 7.1.1503 47a77536ad4c 8 weeks ago 212.1 MB # docker save -o centos_7.1.tar centos:7.1.1503 # docker load --input centos_7.1.tar # docker load < centos_7.1.tar
# docker run centos echo "hello world" Unable to find image 'centos:latest' locally latest: Pulling from centos 47d44cb6f252: Pull complete 168a69b62202: Pull complete 812e9d9d677f: Pull complete 4234bfdd88f8: Pull complete ce20c473cd8a: Pull complete centos:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security. Digest: sha256:3aaab9f1297db9b013063c781cfe901e2aa6e7e334c1d1f4df12f25ce356f2e5 Status: Downloaded newer image for centos:latest hello world
docker run -it centos /bin/bash
docker run -d centos /bin/bash -c "while true; do echo Docker,hello world; sleep 2; <br>179fc7f17c358834364d23112aa26d6a9e1875b2281563720425f62a8f1b5c33
dock logs 179fc7f17c358834364d
docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
# docker images 列出本地所有镜像 # docker search centos 从默认镜像仓库搜索镜像 NAME DESCRIPTION STARS OFFICIAL AUTOMATED centos The official build of CentOS. 2767 [OK] ansible/centos7-ansible Ansible on Centos7 90 [OK] jdeathe/centos-ssh CentOS-6 6.8 x86_64 / CentOS-7 7.2.1511 x8... 42 [OK] jdeathe/centos-ssh-apache-php CentOS-6 6.8 x86_64 - Apache / PHP / PHP M... 21 [OK] nimmis/java-centos This is docker images of CentOS 7 with dif... 17 [OK] consol/centos-xfce-vnc Centos container with "headless" VNC sessi... 14 [OK] #docker pull centos 下载镜像到本地 #docker create -it ubuntu:latest 创建一个容器 Unable to find image 'ubuntu:latest' locally latest: Pulling from ubuntu 58488e45273c: Pull complete 25810b66099e: Pull complete 6571ba684f54: Pull complete 6ed49a73d8f0: Pull complete c53777cbfc31: Pull complete 56465e1e45d2: Pull complete Digest: sha256:312986132029d622ae65423ca25d3a3cf4510de25c47b05b6819d61e2e2b5420 Status: Downloaded newer image for ubuntu:latest 1330233e50aba7fca99e5914bd28dd89321bc86ec35fb36b4775d3424337c190 docker create 命令创建的容器处于停止状态,需要用docker start 把它启动 # docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 1330233e50ab ubuntu:latest "/bin/bash" About a minute ago happy_engelbart docker run 命令等价于先执行docker create命令, 然后再执行docker start 命令 # docker run ubuntu /bin/echo "hello world" hello world
yum -y install util-linux
# docker inspect --format "{{.State.Pid}}" stupefied_cray 最后面跟的是容器的名称
4899
# nsenter --target 4899 --mount --uts --ipc --net --pid
#!/bin/bash
CNAME=$1
CPID=$(docker inspect --format "{{.State.Pid}}" $CNAME)
nsenter --target $CPID --mount --uts --ipc --net –pid
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