Centos7下安装Shadowsocks

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参照：http://blog.51cto.com/zero01/2064660     .

先决条件：

Digitaloean vps centos7.5

curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py"

 python get-pip.py
pip install --upgrade pip
pip install shadowsocks
vi /etc/shadowsocks.json
内容如下：

{
 "server":"0.0.0.0",
 "server_port":8388,
 "local_address": "127.0.0.1",
 "local_port":1080,
 "password":"***",
 "timeout":300,
 "method":"aes-256-cfb",
 "fast_open": false,
 "workers": 1
}
vim /etc/systemd/system/shadowsocks.service 内容如下：
[Unit]
Description=Shadowsocks

[Service]
TimeoutStartSec=0
ExecStart=/usr/bin/ssserver -c /etc/shadowsocks.json

[Install]
WantedBy=multi-user.target
systemctl enable shadowsocks
systemctl start shadowsocks
添加
firewall-cmd —zone=public –add-port=80/tcp –permanent    （–permanent永久生效，没有此参数重启后失效）
重新载入
firewall-cmd –reload
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
yum --enablerepo=elrepo-kernel install kernel-ml -y
egrep ^menuentry /etc/grub2.cfg | cut -f 2 -d \'
grub2-set-default 0         //后面那个数字视情况改变

 reboot
 uname -r
vi /etc/sysctl.conf 
追加：
-------------------------------------------------------
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
-----------------------------------------------------
sysctl -p
要输出这些：
------------------
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
----------------
sysctl net.ipv4.tcp_available_congestion_control
输出应为：
---------------
net.ipv4.tcp_available_congestion_control = bbr cubic reno
-----------------
lsmod | grep bbr
输出应为：
---------------
tcp_bbr                20480  2 
------------------
好，完成了

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