环境

  • debian10
  • shadowsocks-libev

安装

官方源安装

sudo apt update
sudo apt install shadowsocks-libev

官方源最新版本安装

  • 添加软件源，编辑/etc/apt/sources.list，添加：
    deb http://deb.debian.org/debian buster-backports main
  • 安装
    sudo apt update
    sudo apt-get -t buster-backports install "shadowsocks-libev"

配置

  • 编辑配置文件 /etc/shadowsocks-libev/ssconfig.json

    {
        "server":["::1", "0.0.0.0"],
        "mode":"tcp_and_udp",
        "port_password": {
            "port1": "password1",
            "port2": "password2",
        },
        "timeout":60,
        "method":"chacha20-ietf-poly1305",
        "fast_open":true
    }

  • 创建系统服务/etc/systemd/system/ssmanager.service

    [Unit]
    Description=Shadowsocks Manager Server
    After=network.target
    [Service]
    User=root
    Group=root
    KillMode=mixed
    Type=simple
    ExecStart=/usr/bin/ss-manager --manager-address /var/run/shadowsocks-manager.sock -c /etc/shadowsocks-libev/ssconfig.json
    ExecReload=/bin/kill -s HUP $MAINPID
    ExecStop=/bin/kill -s QUIT $MAINPID
    [Install]
    WantedBy=multi-user.target

  • 开启服务

    systemctl start ssmanager
    systemctl enable ssmanager

    优化

  • 开启BBR

    echo "tcp_bbr" | sudo tee --append /etc/modules-load.d/modules.conf

  • 优化内核，编辑/etc/sysctl.conf

    fs.file-max = 51200
    net.core.rmem_max = 67108864
    net.core.wmem_max = 67108864
    net.core.netdev_max_backlog = 250000
    net.core.somaxconn = 4096
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_tw_recycle = 0
    net.ipv4.tcp_fin_timeout = 30
    net.ipv4.tcp_keepalive_time = 1200
    net.ipv4.ip_local_port_range = 10000 65000
    net.ipv4.tcp_max_syn_backlog = 8192
    net.ipv4.tcp_max_tw_buckets = 5000
    net.ipv4.tcp_fastopen = 3
    net.ipv4.tcp_mem = 25600 51200 102400
    net.ipv4.tcp_rmem = 4096 87380 67108864
    net.ipv4.tcp_wmem = 4096 65536 67108864
    net.ipv4.tcp_mtu_probing = 1
    net.core.default_qdisc=fq
    net.ipv4.tcp_congestion_control=bbr

  • 重启电脑后，检查是否开启bbr

    ## 第一项检查：
    sysctl net.ipv4.tcp_available_congestion_control | grep bbr
    ## 若已开启bbr，结果通常为以下两种：
    net.ipv4.tcp_available_congestion_control = bbr cubic reno
    net.ipv4.tcp_available_congestion_control = reno cubic bbr
    ## 第二项检查：
    sysctl net.ipv4.tcp_congestion_control | grep bbr
    ## 若已开启bbr，结果如下：
    net.ipv4.tcp_congestion_control = bbr
    ## 第三项检查：
    sysctl net.core.default_qdisc | grep fq
    ## 若已开启bbr，结果如下：
    net.core.default_qdisc = fq
    ## 第四项检查：
    lsmod | grep bbr
    ## 若已开启bbr，结果可能如下。并不是所有的 VPS 都会有此返回值，若没有也属正常。
    tcp_bbr 20480 2

参考文献

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