CentOS7非root用户离线安装Docker及常见问题总结、加各种操作系统docker桌 ...

环境说明

1、安装用户有sudo权限
2、本文讲docker组件安装，不是桌面程序安装
3、本文讲离线安装，不是在线安装
4、目的呆板是内网呆板，与外部网络不连通
下载

1、下载离线安装包，并上传到$HOME/basic-tool 目次
下载地点：Index of linux/static/stable/x86_64/
我下的这个：
https://download.docker.com/linux/static/stable/x86_64/docker-20.10.24.tgz
理由：rpm的安装起来反而麻烦，缺这个库缺那个库的
#  Docker 的扩展功能包（在离线安装包下载地点页面）
docker-rootless-extras-20.10.24.tgz 
说明："rootless" 通常指的是不需要 root 权限就能运行 Docker 的特性
安装

1、解压

1. cd $HOME/basic-tool
3. tar -xvf  docker-20.10.24.tgz

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2、安装

1. sudo cp docker/* /usr/bin/

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3、注册docker.service服务

1. # 用vi就行了，vim用的刚装的机器上都没这命令
3. vi /etc/systemd/system/docker.service

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1. [Unit]
2. Description=Docker Application Container Engine
3. Documentation=https://docs.docker.com
4. After=network-online.target firewalld.service
5. Wants=network-online.target
6. [Service]
7. Type=notify
8. ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=127.0.0.1
9. ExecReload=/bin/kill -s HUP $MAINPID
10. LimitNOFILE=infinity
11. LimitNPROC=infinity
12. LimitCORE=infinity
13. TimeoutStartSec=0
14. Delegate=yes
15. KillMode=process
16. Restart=on-failure
17. StartLimitBurst=3
18. StartLimitInterval=60s
19. [Install]
20. WantedBy=multi-user.target

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4、添加镜像加速(此步可选)

1. sudo mkdir -p /etc/docker

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1. sudo tee /etc/docker/daemon.json <<-'EOF'
2. {
3.     "oom-score-adjust": -1000,
4.     "log-driver": "json-file",
5.     "log-opts": {
6.     "max-size": "20m",
7.     "max-file": "3"
8.     },
9.     "max-concurrent-downloads": 10,
10.     "max-concurrent-uploads": 10,
11.     "registry-mirrors": ["https://sto5ef1n.mirror.aliyuncs.com"],
12.     "storage-driver": "overlay2",
13.     "storage-opts": [
14.     "overlay2.override_kernel_check=true"
15.     ]
16. }
17. EOF

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5、创建 Docker 组并添加（当前）用户

1. # 添加用户组 docker
2. sudo groupadd docker
4. # 添加用户
5. sudo usermod -aG docker $USER
6. # 等价于
7. # sudo usermod -aG docker xxx(当前用户名)
9. #更新用户组
10. newgrp docker   

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6、启动 Docker 服务

1. sudo chmod 777 /etc/systemd/system/docker.service
2. sudo systemctl daemon-reload
3. sudo systemctl enable docker
4. sudo systemctl start docker

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7、验证安装

1. systemctl status docker
2. docker -v
3. docker info

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常见问题

1、实验docker下令时报权限错

1. [zhaoXXXXXX@GZXXX-PM153161 basic-tool]$ docker ps
2. Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock:
3. Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json":
4. dial unix /var/run/docker.sock: connect: permission denied

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解决：更新用户组

1. #更新用户组
2. newgrp docker 

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总结

      因大部门文章都不完备，不是少这步就是少那步，本文章是作者看了网上多个文章后取其英华并美满整理而来。作者此贴已亲测并验证通过，请放心参考！

附件

附件一：创建linux用户

1. # 创建用户组（上面有执行过）
2. # groupadd docker -g 200
4. # 创建 docker 用户  第一个docker是分组名，第二个docker是用户名
5. sudo useradd -g docker docker
6. sudo usermod -aG docker docker
8. # 修改 docker 用户密码
9. passwd docker   

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附件二：将docker添加到sudo用户列表

1. # 没错这里就是vi和sudo两命令连在一起，中间没有空格
2. visudo

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1. # 最后一行添加，保存即刻生效
2. docker ALL=(ALL) NOPASSWD:ALL

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附件三：docker desktop下载

docker桌面程序下载地点
https://www.docker.com/

附件四：rpm相干包下载地点

本文不需要用
https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-20.10.24-3.el7.x86_64.rpm
https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.6.33-3.1.el7.x86_64.rpm

# policycoreutils-python安装（装docker-ce-selinux的依赖，本文不需要用）
policycoreutils-python-2.5-34.el7.x86_64.rpm

附件五：不采用rpm包的理由

rpm的安装起来缺这个库缺那个库的

1. [zhaoXXXXX@GZXXX-PM153161 basic-tool]$ sudo rpm -ivh containerd.io-1.6.33-3.1.el7.x86_64.rpm
2. warning: containerd.io-1.6.33-3.1.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
3. error: Failed dependencies:
4.         container-selinux >= 2:2.74 is needed by containerd.io-1.6.33-3.1.el7.x86_64

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1. [zhaoXXXXX@GZXXX-PM153161 basic-tool]$ sudo rpm -ivh docker-ce-20.10.24-3.el7.x86_64.rpm
2. warning: docker-ce-20.10.24-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
3. error: Failed dependencies:
4.         container-selinux >= 2:2.74 is needed by docker-ce-3:20.10.24-3.el7.x86_64
5.         containerd.io >= 1.4.1 is needed by docker-ce-3:20.10.24-3.el7.x86_64
6.         docker-ce-cli is needed by docker-ce-3:20.10.24-3.el7.x86_64
7.         docker-ce-rootless-extras is needed by docker-ce-3:20.10.24-3.el7.x86_64
8.         libcgroup is needed by docker-ce-3:20.10.24-3.el7.x86_64

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1. [zhaoXXXXX@GZXXX-PM153161 basic-tool]$ sudo rpm -ivh docker-ce-rootless-extras-20.10.24-3.el7.x86_64.rpm
2. warning: docker-ce-rootless-extras-20.10.24-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
3. error: Failed dependencies:
4.         docker-ce is needed by docker-ce-rootless-extras-0:20.10.24-3.el7.x86_64
5.         fuse-overlayfs >= 0.7 is needed by docker-ce-rootless-extras-0:20.10.24-3.el7.x86_64
6.         slirp4netns >= 0.4 is needed by docker-ce-rootless-extras-0:20.10.24-3.el7.x86_64

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1. [zhaoXXXXX@GZXXX-PM153161 basic-tool]$ sudo rpm -ivh policycoreutils-python-2.5-34.el7.x86_64.rpm
2. warning: policycoreutils-python-2.5-34.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
3. error: Failed dependencies:
4.         audit-libs-python >= 2.1.3-4 is needed by policycoreutils-python-2.5-34.el7.x86_64
5.         checkpolicy is needed by policycoreutils-python-2.5-34.el7.x86_64
6.         libapol.so.4()(64bit) is needed by policycoreutils-python-2.5-34.el7.x86_64
7.         libapol.so.4(VERS_4.0)(64bit) is needed by policycoreutils-python-2.5-34.el7.x86_64
8.         libcgroup is needed by policycoreutils-python-2.5-34.el7.x86_64
9.         libqpol.so.1()(64bit) is needed by policycoreutils-python-2.5-34.el7.x86_64
10.         libqpol.so.1(VERS_1.2)(64bit) is needed by policycoreutils-python-2.5-34.el7.x86_64
11.         libqpol.so.1(VERS_1.4)(64bit) is needed by policycoreutils-python-2.5-34.el7.x86_64
12.         libselinux-python is needed by policycoreutils-python-2.5-34.el7.x86_64
13.         libsemanage-python >= 2.5-14 is needed by policycoreutils-python-2.5-34.el7.x86_64
14.         policycoreutils = 2.5-34.el7 is needed by policycoreutils-python-2.5-34.el7.x86_64
15.         python-IPy is needed by policycoreutils-python-2.5-34.el7.x86_64
16.         setools-libs >= 3.3.8-4 is needed by policycoreutils-python-2.5-34.el7.x86_64

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附件六：iptables对外开放5151端口

1. sudo iptables -I INPUT -p tcp --dport 5151 -j ACCEPT

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