本教程主要用在centos7或8，因为centos环境下trojan搭建相对简单，ss因为占用资源比较小。

1、准备编译环境

CentOS 7

yum install gcc gettext autoconf libtool automake make pcre-devel asciidoc xmlto c-ares-devel libev-devel libsodium-devel mbedtls-devel -y

CentOS 8

yum install gcc gettext autoconf libtool automake make pcre-devel asciidoc xmlto c-ares-devel libev-devel -y

先从最近的源码编译安装libmbedtls和libsodium

export LIBSODIUM_VER=1.0.11
export MBEDTLS_VER=2.4.0
wget https://download.libsodium.org/libsodium/releases/libsodium-$LIBSODIUM_VER.tar.gz
tar xvf libsodium-$LIBSODIUM_VER.tar.gz
pushd libsodium-$LIBSODIUM_VER
./configure --prefix=/usr && make
sudo make install
popd
wget https://tls.mbed.org/download/mbedtls-$MBEDTLS_VER-gpl.tgz
tar xvf mbedtls-$MBEDTLS_VER-gpl.tgz
pushd mbedtls-$MBEDTLS_VER
make SHARED=1 CFLAGS=-fPIC
sudo make DESTDIR=/usr install
popd

2、获取shadowsocks-libev源码, 并安装

yum install git
git clone https://github.com/shadowsocks/shadowsocks-libev.git
cd shadowsocks-libev
git submodule update --init
./autogen.sh && ./configure --disable-documentation && make
sudo make install

3、 创建配置文件

sudo mkdir /etc/shadowsocks-libev
sudo vi /etc/shadowsocks-libev/config.json

复制粘贴如下内容（注意修改密码“password”）：

{
     "server":"0.0.0.0",
     "server_port":8388,
     "password":"password",
     "timeout":600,
     "method":"aes-256-cfb" ,
     "fast_open": false
 }

4、创建Shadowsocks-libev.service配置文件

sudo vi /etc/systemd/system/shadowsocks-libev.service

复制粘贴：

[Unit]
Description=Shadowsocks-libev Server
Documentation=https://shadowsocks.org/en/
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/ss-server -c /etc/shadowsocks-libev/config.json -u
Restart=on-abort

[Install]
WantedBy=multi-user.target

5、启动 Shadowsocks-libev 服务

sudo systemctl start shadowsocks-libev

6、设置开机启动

sudo systemctl enable shadowsocks-libev

设置防火墙开放端口

firewall-cmd --zone=public --add-port=8388/tcp --permanent
firewall-cmd --zone=public --add-port=8388/udp --permanent
sudo systemctl restart firewalld