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  • centos下docker安装

    一、设置存储库

    yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
    

     执行结果

    已加载插件:fastestmirror, langpacks
    adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
    grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
    repo saved to /etc/yum.repos.d/docker-ce.repo

     

    二、安装docker-ce(docker-ce是社区免费版,docker-ee是企业版)

    yum install -y docker-ce
    

     出现错误

    获取 GPG 密钥失败:[Errno 14] curl#35 - "Network file descriptor is not connected"
    

    到http://mirrors.163.com找到对应版本

    rpm --import http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
    

    再次安装docker-ce成功

    三、启动docker

    systemctl daemon-reload && systemctl start docker
    

      验证

    docker version
    

      

    Client: Docker Engine - Community
     Version:           19.03.7
     API version:       1.40
     Go version:        go1.12.17
     Git commit:        7141c199a2
     Built:             Wed Mar  4 01:24:10 2020
     OS/Arch:           linux/amd64
     Experimental:      false
    
    Server: Docker Engine - Community
     Engine:
      Version:          19.03.7
      API version:      1.40 (minimum version 1.12)
      Go version:       go1.12.17
      Git commit:       7141c199a2
      Built:            Wed Mar  4 01:22:45 2020
      OS/Arch:          linux/amd64
      Experimental:     false
     containerd:
      Version:          1.2.13
      GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
     runc:
      Version:          1.0.0-rc10
      GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
     docker-init:
      Version:          0.18.0
      GitCommit:        fec3683

    四、运行hello word!

    先login(官方文档上说运行helloword不需要login,但会出现docker: Error response from daemon: pull access denied for hell-world, repository does not exist or may require 'docker login': denied: requested access to the resource is denied.错误)

    [root@localhost data]# docker run hello-world
    Unable to find image 'hell-world:latest' locally
    docker: Error response from daemon: pull access denied for hell-world, repository does not exist or may require 'docker login': denied: requested access to the resource is denied.
    See 'docker run --help'.
    [root@localhost data]# docker login
    Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
    Username: xxxxx
    Password: 
    WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
    Configure a credential helper to remove this warning. See
    https://docs.docker.com/engine/reference/commandline/login/#credentials-store
    
    Login Succeeded
    

     运行hello-world

    [root@localhost data]# docker run hello-world
    Unable to find image 'hello-world:latest' locally
    latest: Pulling from library/hello-world
    1b930d010525: Pull complete 
    Digest: sha256:fc6a51919cfeb2e6763f62b6d9e8815acbf7cd2e476ea353743570610737b752
    Status: Downloaded newer image for hello-world:latest
    
    Hello from Docker!
    This message shows that your installation appears to be working correctly.
    
    To generate this message, Docker took the following steps:
     1. The Docker client contacted the Docker daemon.
     2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
        (amd64)
     3. The Docker daemon created a new container from that image which runs the
        executable that produces the output you are currently reading.
     4. The Docker daemon streamed that output to the Docker client, which sent it
        to your terminal.
    
    To try something more ambitious, you can run an Ubuntu container with:
     $ docker run -it ubuntu bash
    
    Share images, automate workflows, and more with a free Docker ID:
     https://hub.docker.com/
    
    For more examples and ideas, visit:
     https://docs.docker.com/get-started/
    

      

      

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  • 原文地址:https://www.cnblogs.com/zhouyu629/p/12447051.html
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