Docker安装及使用

HelloCooper

墨衍会员 · AI 创作全网分发码龄11年

关注

原创最新推荐文章于 2026-09-10 22:17:59 发布 754 阅读 AI 写同款· GEO 优化 ›

Centos中安装Docker及Docker的使用在Centos7系统中安装指定版本的Docker,及Docker常用命令阅读详情

安装及使用Docker

安装docker

yum install docker
systemctl enable docker
systemctl start docker
sudo usermod -aG docker cooper

pull镜像

docker run hello-world
docker pull centos
docker pull centos:7.2.1511

images

docker images -a

docker commit … //save container as image
docker commit –author “cooper@foxmail.com” –message “centos7 commit” {cont_name} {img_name}:{tag}
docker build -t nginx:v3 //Read cur dir Dockerfile（FROM，RUN）
docker build - < Dockerfile
cat Dockerfile | docker build -

//save image to file
docker save centos | gzip > centos-latest.tar.gz
docker load -i centos-latest.tar.gz

docker rmi {img_name}

container

docker ps -a

//interactive(stop on exit)
docker run -it centos:latest bash
docker run -it –name “centos0” centos:latest bash

docker run -it –rm centos:latest bash
docker run -it –rm centos:latest /bin/echo ‘Hello world’

//deamon
docker run –name “centos0” -d centos:latest /bin/sh -c “while true; do echo hello world; sleep 1; done”
docker attach centos0

//interactive
docker run –name “centos0” -t centos:latest /sbin/init
docker exec -it centos0 /bin/bash

docker ps
docker logs {cont_name}

docker rm {cont_name}

docker start/stop/restart {cont_name}
docker start -i {cont_name}
docker pause/unpause

//import and export container to file

docker export 7691a814370e > ubuntu.tar
cat ubuntu.tar | docker import - test/ubuntu:v1.0

docker rename centos_old centos_new

/var/lib/docker/

docker run --name "centos0" -t centos:latest /sbin/init
docker exec -it centos0 /bin/bash

docker save centos | gzip > centos-latest-7.3.1611.tar.gz
docker load -i centos-latest-7.3.1611.tar.gz

yum install wget
   wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
   mv CentOS7-Base-163.repo /etc/yum.repos.d/
     yum clean all
     yum makecache

yum install iproute
yum install openssh-server
systemctl start sshd
passwd root/csg123456
     ssh root@192.168.123.2

docker commit --author "yupengqu@tencent.com" --message "centos7 commit"  centos0 centos7.3-sshd:v1.0

测试Dockerfile
vi Dockerfile

FROM centos

RUN mkdir /tmp/foo
RUN dd if=/dev/zero of=/tmp/foo/bar bs=1048576 count=100
RUN rm /tmp/foo/bar
RUN rm /tmp/foo

docker build -t centos7.3-sshd:v1.0

host<->guest port mapping

docker -P
docker -p

guest<->guest link

docker –link

data volume

docker run -v
docker run –name “centos0” -t -v /home/docker-CentOS/host_datav:/guest_datav centos:latest /sbin/init
docker inspect centos0

metrics

numactl –hardware
docker run –name “centos0” -c 1024 –cpuset-cpus=0,2,4,6 -m 8g -t centos:latest /sbin/init
echo “512” > /cgroup/cpu/docker/$CONTAINER_ID/cpu.shares

device

docker run –name “centos0” -c 1024 –cpuset-cpus=0,2,4,6 -m 8g –device=/dev/sdg:/dev/sdx -t centos:latest /sbin/init
docker run –name “centos0” -c 1024 –cpuset-cpus=0,2,4,6 -m 8g -v /dev/sdh:/dev/sdx -t centos:latest /sbin/init

add disk device

docker volume create –driver local –name dsdy –opt type=ext4 –opt device=/dev/sdy
docker run –name “centos0” -c 1024 –cpuset-cpus=0,2,4,6 -m 8g -v dsdy:/dev/sdy -t centos:latest /sbin/init

docker volume cmd

docker volume create Create a volume
docker volume inspect Display detailed information on one or more volumes
docker volume ls List volumes
docker volume prune Remove all unused volumes
docker volume rm Remove one or more volumes