新GPU服务器联网指南

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新服务器运行在Docker容器里，使用信息中心分配的静态ip连接，无法连接至外部互联网。解决方法如下：

Linux

Debian/Ubuntu

  1. 安装Squid
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    sudo apt-get update
    sudo apt-get install squid
  2. 开启IPv4转发
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    echo "net.ipv4.ip_forward = 1" | sudo tee -a /etc/sysctl.conf
    sudo sysctl -p
  3. 修改配置文件
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    vim /etc/squid/squid.conf
    删除
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    http_access deny all
    添加一行
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    http_access allow all
  4. 启动Squid
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    systemctl enable --now squid

CentOS/RHEL

  1. 安装Squid
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    sudo yum install squid
  2. 确认版本
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    rpm -qa | grep squid
  3. 开启IPv4转发
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    echo "net.ipv4.ip_forward = 1" | sudo tee -a /etc/sysctl.conf
    sudo sysctl -p
  4. 修改配置文件
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    vim /etc/squid/squid.conf
    删除
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    http_access deny all
    添加一行
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    http_access allow all
  5. 启动Squid
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    systemctl enable --now squid

会用Linux的应该不要我教你怎么转发ssh吧:joy:

Windows

  1. 下载并安装Squid for windows：https://squid.diladele.com/
  2. 选择Console App下载一个msi并安装：https://packages.diladele.com/squid/4.14/squid.msi
  3. 右键状态栏图标，点击打开配置：
    image-20230302113031594
  4. 删除
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    http_access deny all
    添加一行 
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    http_access allow all
  5. 重启Squid
  6. 在XShell里设置端口转发image-20230302113228335
  7. 连接到服务器，在~/.bashrc或~/.zshrc中添加以下配置：
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    # proxy configure
    setproxy() {
        export HTTP_PROXY="http://127.0.0.1:3128"
        export HTTPS_PROXY="http://127.0.0.1:3128"
        export ALL_PROXY="http://127.0.0.1:3128"
    }
    unsetproxy() {
        unset HTTP_PROXY
        unset HTTPS_PROXY
        unset ALL_PROXY
    }
  8. 新建文件/etc/apt/apt.conf.d/proxy.conf，并写入以下内容：
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    Acquire {
      HTTP::proxy "http://127.0.0.1:3128/";
      HTTPS::proxy "http://127.0.0.1:3128/";
    }
  9. 换源（此处以北京外国语大学镜像为例）：
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    sudo mv /etc/apt/sources.list /etc/apt/sources.list.0
    sudo touch /etc/apt/sources.list
    sudo vim /etc/apt/sources.list
    写入以下内容：
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    deb http://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
    deb-src http://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse

    deb http://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
    deb-src http://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse

    deb http://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
    deb-src http://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse

    deb http://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
    deb-src http://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse

    ## Not recommended
    # deb http://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
    # deb-src http://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
  10. 运行sudo apt-get update，发现已经可以更新。
  11. 运行 
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    setproxy
    curl baidu.com -x ${HTTP_PROXY}
    出现以下内容 
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    <html>
    <meta http-equiv="refresh" content="0;url=http://www.baidu.com/">
    </html>
    即大功告成。
  12. 强烈建议安装Anaconda3 
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    curl -O https://mirrors.nju.edu.cn/anaconda/archive/Anaconda3-2022.10-Linux-x86_64.sh
    chmod +x Anaconda3-2022.10-Linux-x86_64.sh
    ./Anaconda3-2022.10-Linux-x86_64.sh
  13. Pypi换源： 
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    python -m pip install -i https://mirrors.bfsu.edu.cn/pypi/web/simple --upgrade pip
    pip config set global.index-url https://mirrors.bfsu.edu.cn/pypi/web/simple
  14. Conda换源： 
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    touch ~/.condarc
    vim ~/.condarc
    输入以下内容： 
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    channels:
      - defaults
    show_channel_urls: true
    default_channels:
      - https://mirrors.bfsu.edu.cn/anaconda/pkgs/main
      - https://mirrors.bfsu.edu.cn/anaconda/pkgs/r
      - https://mirrors.bfsu.edu.cn/anaconda/pkgs/msys2
    custom_channels:
      conda-forge: https://mirrors.bfsu.edu.cn/anaconda/cloud
      msys2: https://mirrors.bfsu.edu.cn/anaconda/cloud
      bioconda: https://mirrors.bfsu.edu.cn/anaconda/cloud
      menpo: https://mirrors.bfsu.edu.cn/anaconda/cloud
      pytorch: https://mirrors.bfsu.edu.cn/anaconda/cloud
      pytorch-lts: https://mirrors.bfsu.edu.cn/anaconda/cloud
      simpleitk: https://mirrors.bfsu.edu.cn/anaconda/cloud