Centos7.9安装Docker

Centos7.9安装Docker

𝓓𝓸𝓷 Lv6
  2026-03-01 10:42:49 2026-03-01 10:42:49 Created   2026-04-01 16:25:39 2026-04-01 16:25:39 Updated    

一、关闭防火墙

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systemctl stop firewalld  
systemctl disable firewalld
systemctl status firewalld

二、关闭selinux

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sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux  
setenforce 0

三、配置本地yum源(可选)

本地yum源安装Docker版本太低，安装可能会失败，可以配置阿里yum源

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cat  > /etc/yum.repos.d/CentOS-Base.repo <<EOF

[base]
name=CentOS-\$releasever - Base
baseurl=file:///mnt
gpgcheck=0
enabled=1

EOF


mount -o loop /opt/soft/CentOS-7-x86_64-DVD-2009.iso /mnt

yum clean all && yum makecache

四、配置阿里yum源

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cd /etc/yum.repos.d
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

yum install epel-release -y
yum install container-selinux -y    #安装最新的contain-selinux

yum clean all && yum makecache

五、移除旧版Docker

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yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

六、安装依赖工具

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yum install -y yum-utils device-mapper-persistent-data lvm2

七、设置Docker稳定仓库

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yum-config-manager \
    --add-repo  \
    http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    
sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo

yum makecache fast

八、安装Docker Engine(社区版)

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yum install docker-ce docker-ce-cli containerd.io


安装报错:
containerd.io-1.6.33-3.1.el7.x86_64: [Errno 256] No more mirrors to try.
一般是网络不稳定引起的，重新安装即可

九、启动Docker

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systemctl start docker
systemctl status docker
systemctl enable docker

十、验证Docker

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docker -v
docker run hello-world
docker info

十一、镜像加速

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cat  >  /etc/docker/daemon.json  << EOF

{
     "registry-mirrors": [
        "https://docker-0.unsee.tech",
        "https://docker.1ms.run",
        "https://docker.xuanyuan.me",
        "https://0vrv861z.mirror.aliyuncs.com",
        "http://hub-mirror.c.163.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com",
        "https://2a6bf1988cb6428c877f723ec7530dbc.mirror.swr.myhuaweicloud.com",
        "https://docker.m.daocloud.io",
        "https://hub-mirror.c.163.com",
        "https://mirror.baidubce.com",
        "https://your_preferred_mirror",
        "https://dockerhub.icu",
        "https://docker.registry.cyou",
        "https://docker-cf.registry.cyou",
        "https://dockercf.jsdelivr.fyi",
        "https://docker.jsdelivr.fyi",
        "https://dockertest.jsdelivr.fyi",
        "https://mirror.aliyuncs.com",
        "https://dockerproxy.com",
        "https://mirror.baidubce.com",
        "https://docker.m.daocloud.io",
        "https://docker.nju.edu.cn",
        "https://docker.mirrors.sjtug.sjtu.edu.cn",
        "https://docker.mirrors.ustc.edu.cn",
        "https://mirror.iscas.ac.cn",
        "https://docker.rainbond.cc"
      ]

}
 
EOF

十二、重启Docker

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systemctl restart docker

十三、修改Docker默认存储位置

1.停止Docker
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systemctl stop docker

Warning: Stopping docker.service, but it can still be activated by:
  docker.socket
 解决方法:
 systemctl status docker.socket
 systemctl stop docker.socket
2.查看Docker存储目录位置
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docker info|grep -i root

 Docker Root Dir: /var/lib/docker
3.创建新的存储路径
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mkdir /opt/docker
4.将数据迁移至新的存储路径
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rsync -av --progress /var/lib/docker/* /opt/docker/

也可以使用mv命令移动文件，rsync命令更安全

rsync参数：
-a 表示归档模式，保持文件的权限、时间戳等信息。
-v 表示显示详细的输出。
--progress 显示进度。
5.修改Docker配置文件

添加 “data-root”: “/opt/docker”参数，注意参数后面有逗号

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vi /etc/docker/daemon.json

{
     "data-root": "/opt/docker",
     "registry-mirrors": [
        "https://docker-0.unsee.tech",
        "https://docker.1ms.run",
        "https://docker.xuanyuan.me",
        "https://0vrv861z.mirror.aliyuncs.com",
        "http://hub-mirror.c.163.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com",
        "https://2a6bf1988cb6428c877f723ec7530dbc.mirror.swr.myhuaweicloud.com",
        "https://docker.m.daocloud.io",
        "https://hub-mirror.c.163.com",
        "https://mirror.baidubce.com",
        "https://your_preferred_mirror",
        "https://dockerhub.icu",
        "https://docker.registry.cyou",
        "https://docker-cf.registry.cyou",
        "https://dockercf.jsdelivr.fyi",
        "https://docker.jsdelivr.fyi",
        "https://dockertest.jsdelivr.fyi",
        "https://mirror.aliyuncs.com",
        "https://dockerproxy.com",
        "https://mirror.baidubce.com",
        "https://docker.m.daocloud.io",
        "https://docker.nju.edu.cn",
        "https://docker.mirrors.sjtug.sjtu.edu.cn",
        "https://docker.mirrors.ustc.edu.cn",
        "https://mirror.iscas.ac.cn",
        "https://docker.rainbond.cc"
      ]

}
6.重启Docker
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systemctl daemon-reload
systemctl start docker
7.验证 Docker 存储目录
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docker info|grep -i root
8.删除旧的Docker数据文件
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rm -rf /var/lib/docker

十四、日常查询

1.查看docker容器资源使用情况
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# docker stats

CONTAINER ID   NAME                                                         CPU %     MEM USAGE / LIMIT     MEM %     NET I/O           BLOCK I/O         PIDS
6e61c1f01f08   yhis-material-center-test.1.tx0hi3nbp57743mrd1gtcff8b        3.40%     620.8MiB / 22.63GiB   2.68%     153MB / 169MB     22.9GB / 0B       300
586420293fb0   yhis-financial-center-test.1.ti5q290tk75nhu8jdcs50rkau       6.51%     1.064GiB / 22.63GiB   4.70%     1.22GB / 1.43GB   200GB / 0B        368
80d8f448756e   yhis-platform-maindata-test.1.pdh2ofd7hu145zhni2rmh6qm9      5.74%     620.5MiB / 22.63GiB   2.68%     2.9GB / 3.34GB    62.9GB / 0B       340
5e2d1220ec33   yhis-visit-inp-test.1.yz8bejyotxvsobwy76z9ijs25              4.53%     731.3MiB / 22.63GiB   3.16%     837MB / 816MB     242GB / 0B        311
88b38dc5b86d   yhis-query-statistics-test.1.31eclqtv8sgqv6njkmp7xcdis       4.40%     567.8MiB / 22.63GiB   2.45%     673MB / 759MB     299GB / 0B        299
79acf5452821   yhis-patient-center-test.1.w7owsmq78hg8bhsy56tdqqsgd         3.88%     604.5MiB / 22.63GiB   2.61%     691MB / 752MB     241GB / 0B        309
428170600f20   yhis-encounter-center-test.1.n6uhk2ebljcvz5imyunicd61s       4.29%     680.4MiB / 22.63GiB   2.94%     724MB / 800MB     269GB / 0B        321
b8e447635d03   yhis-clinic-surgery-test.1.qfrrty4mabqpnt3c4ofh2zaln         4.33%     662.6MiB / 22.63GiB   2.86%     684MB / 745MB     234GB / 0B        296
b33b384e92a7   yhis-platform-system-test.1.rpxfd4hriiddpx8c9ib6r424u        4.92%     555.4MiB / 22.63GiB   2.40%     931MB / 987MB     212GB / 0B        308
2d9be232774d   yhis-financial-center-inp-test.1.mo7ppo3e13yhxv931yhw4d1sk   5.16%     725.4MiB / 22.63GiB   3.13%     821MB / 992MB     321GB / 0B        388
42eab630962e   yhis-clinic-nurse-test.1.hxvnl8yaq1kp038trwn61owy8           5.76%     543.8MiB / 22.63GiB   2.35%     847MB / 879MB     324GB / 0B        348
f78b31421cb1   yhis-platform-file-test.1.ksa5yvgfm96fwrwr7q9faczw4          0.21%     165.8MiB / 22.63GiB   0.72%     807MB / 879MB     385GB / 0B        158
5800426a630f   yhis-disease-rc-test.1.m624a2kk5fui87eix0l2u1aex             4.53%     666.1MiB / 22.63GiB   2.87%     2GB / 2.21GB      1.14TB / 0B       293
6fee2382852e   xxl-job                                                      0.44%     414.4MiB / 22.63GiB   1.79%     18GB / 12.4GB     609GB / 0B        78
0e9528bd492b   seata-server                                                 0.97%     425.2MiB / 22.63GiB   1.83%     0B / 0B           929GB / 0B        150
744018672d46   tidb                                                         14.70%    3.844GiB / 22.63GiB   16.99%    27.6GB / 50.9GB   272TB / 25.4GB    21
39b50dfd5154   minio                                                        3.93%     275.4MiB / 22.63GiB   1.19%     0B / 0B           14.5TB / 12.7GB   13
3ca946ec53e4   portainer                                                    0.04%     24.88MiB / 22.63GiB   0.11%     526GB / 471GB     3.8TB / 582GB     12
03df6cf119b9   hosa-system-svc.1.sh5ld39yjvx7cb2bqhuxom8zs                  347.38%   999.3MiB / 22.63GiB   4.31%     12.4kB / 14.2kB   118MB / 0B        54

2.查看镜像、容器空间使用情况
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# docker system df -v

Images space usage:
Containers space usage:
Local Volumes space usage:
  • Title: Centos7.9安装Docker
  • Author: 𝓓𝓸𝓷
  • Created at : 2026-03-01 10:42:49
  • Updated at : 2026-04-01 16:25:39
  • Link: https://www.zhangdong.me/centos-docker-installation.html
  • License: This work is licensed under CC BY-NC-SA 4.0.
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评论
  1. 一、关闭防火墙
  2. 二、关闭selinux
  3. 三、配置本地yum源(可选)
  4. 四、配置阿里yum源
  5. 五、移除旧版Docker
  6. 六、安装依赖工具
  7. 七、设置Docker稳定仓库
  8. 八、安装Docker Engine(社区版)
  9. 九、启动Docker
  10. 十、验证Docker
  11. 十一、镜像加速
  12. 十二、重启Docker
  13. 十三、修改Docker默认存储位置
    1. 1.停止Docker
    2. 2.查看Docker存储目录位置
    3. 3.创建新的存储路径
    4. 4.将数据迁移至新的存储路径
    5. 5.修改Docker配置文件
    6. 6.重启Docker
    7. 7.验证 Docker 存储目录
    8. 8.删除旧的Docker数据文件
  14. 十四、日常查询
    1. 1.查看docker容器资源使用情况
    2. 2.查看镜像、容器空间使用情况