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  • centos安装docker

    官方文档地址:https://docs.docker.com/engine/install/centos/

    安装命令补全

    # yum install bash-comple*
    
    # source /usr/share/bash-completion/bash_completion

    rpm安装

    官方rpm安装包下载地址:https://download.docker.com/linux/centos/7/x86_64/stable/Packages/

    阿里云rpm包下载地址:https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/

    安装过程

    # curl -o /usr/local/src/docker-ce-18.03.1.ce-1.el7.centos.x86_64.rpm  https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/docker-ce-18.03.1.ce-1.el7.centos.x86_64.rpm
    # yum install -y /usr/local/src/docker-ce-18.03.1.ce-1.el7.centos.x86_64.rpm

    启动并验证

    # systemctl start docker
    
    # docker info|grep -i "server version"
    Server Version: 18.03.1-ce

    二进制安装

    二进制包下载地址:

    • 官方:https://download.docker.com/linux/static/stable/x86_64/
    • 阿里云:https://mirrors.aliyun.com/docker-ce/linux/static/stable/x86_64/

    安装过程

    1、下载安装包并解压

    # wget https://mirrors.aliyun.com/docker-ce/linux/static/stable/x86_64/docker-18.03.1-ce.tgz
    
    # tar -zvxf docker-18.03.1-ce.tgz
    
    # cp docker/* /usr/bin/

    2、编写unit文件

    # vim /etc/systemd/system/docker.service
    [Unit] Description
    =Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify ExecStart=/usr/bin/dockerd ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target

    添加权限

    # chmod +x /etc/systemd/system/docker.service

    重载配置并启动docker

    # systemctl daemon-reload 
    # systemctl start docker

    验证

    # docker info|grep -i "server version"
    Server Version: 18.03.1-ce

     

    使用aliyun的yum源安装

    配置yum源

    # rm -rf /etc/yum.repos.d/*
    
    # wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    
    # wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
    
    # wget -O /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    

    安装docker

    移除旧版本

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

    安装yum工具类

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

    如果安装的是新版的docker,可以先列出安装的docker组件再卸载

    [root@docker02 ~]# yum list installed|grep docker
    containerd.io.x86_64            1.4.6-3.1.el7                  @docker-ce-stable
    docker-ce-cli.x86_64            1:20.10.7-3.el7                @docker-ce-stable
    docker-scan-plugin.x86_64       0.8.0-3.el7                    @docker-ce-stable
    
    [root@docker02 ~]# yum remove docker-ce-cli.x86_64 containerd.io.x86_64  docker-scan-plugin.x86_64 -y

    安装指定版本docker

    [root@docker02 ~]# yum install docker-ce-18.09.9 docker-ce-cli-18.09.9 containerd.io

    启动docker

    # systemctl start docker

    docker info信息解读

    [root@localhost ~]# docker info
    Client:
     Context:    default
     Debug Mode: false
     Plugins:
      app: Docker App (Docker Inc., v0.9.1-beta3)
      buildx: Build with BuildKit (Docker Inc., v0.5.1-docker)
      scan: Docker Scan (Docker Inc., v0.8.0)
    
    Server:
     Containers: 0               # 当前主机运行的容器总数
      Running: 0                 # 当前运行中的容器
      Paused: 0              # 当前暂停的容器
      Stopped: 0              # 当前已经停止的容器
     Images: 0               # 当前服务器的镜像数
     Server Version: 18.09.9       # 服务端的docker版本
     Storage Driver: overlay2     # 当前docker服务使用的存储引擎
      Backing Filesystem: xfs         # 当前服务器的文件系统
      Supports d_type: true      # 是否支持d_type,分层
      Native Overlay Diff: true    # 是否支持差异化数据存储
      userxattr: false          
     Logging Driver: json-file    # 日志的存储格式
     Cgroup Driver: cgroupfs         # cgroups的类型
     Cgroup Version: 1
     Plugins:
      Volume: local                     # 卷存储
      Network: bridge host ipvlan macvlan null overlay        # overlay跨主机通信
      Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog       # 日志类型
     Swarm: inactive                 # 是否支持swarm
     Runtimes: runc io.containerd.runc.v2 io.containerd.runtime.v1.linux   # 运行时
     Default Runtime: runc                      # 默认运行时
     Init Binary: docker-init                   # 初始化容器的进程,即pid为1的进程
     containerd version: d71fcd7d8303cbf684402823e425e9dd2e99285d
     runc version: b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
     init version: de40ad0                      # init版本
     Security Options:
      seccomp                  # 操作审计,https://docs.docker.com/engine/security/seccomp
       Profile: default            # 默认的配置文件        
     Kernel Version: 3.10.0-862.el7.x86_64
     Operating System: CentOS Linux 7 (Core)
     OSType: linux
     Architecture: x86_64
     CPUs: 2
     Total Memory: 1.779GiB
     Name: localhost.localdomain
     ID: G55U:HZQF:LKAF:I42F:3VZS:PBEV:YQHU:OXRZ:PMIB:LK5Q:SDVX:LJJL
     Docker Root Dir: /var/lib/docker           # 宿主机数据保存目录
     Debug Mode: false 
     Registry: https://index.docker.io/v1/      # 镜像仓库
     Labels:
     Experimental: false             # 是否是测试版
     Insecure Registries:
      127.0.0.0/8
     Live Restore Enabled: false      #是否开启活动重启,即重启docker-daemon不关闭容器
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  • 原文地址:https://www.cnblogs.com/zh-dream/p/14856348.html
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