[Nginx] nginx配置域名反代后端端口

下载GOFLY客服（go语言开发的在线客服系统）系统后，运行起来服务，默认是监听8081端口

这个时候，只能使用http://ip:8081这样的形式来访问，不符合实际需求

下载安装配置nginx后，就可以通过域名来访问服务了

ubuntu系统安装nginx

apt-get install curl gnupg2 ca-certificates lsb-release
echo "deb http://nginx.org/packages/ubuntu `lsb_release -cs` nginx" | tee /etc/apt/sources.list.d/nginx.list
curl -fsSL https://nginx.org/keys/nginx_signing.key | apt-key add -
apt-key fingerprint ABF5BD827BD9BF62
apt-get update
apt-get install nginx

centos系统安装nginx

vim 编辑 /etc/yum.repos.d/nginx.repo

[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

yum install nginx

配置nginx反向代理

location /static { } 这里配置的是，访问静态资源的时候，直接nginx返回静态资源，就不用走到go后端服务了

proxy_pass http://127.0.0.1:8081; 这里就是重点了，反向代理到后端8081端口

下面这几句是传递真实IP到后端服务

proxy_set_header X-Real-IP $remote_addr;

升级连接成为websocket连接，支持websocket

proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Origin "";

server{
       listen 80;
        server_name  gofly.sopans.com;
        access_log  /var/log/nginx/gofly.sopans.com.access.log  main;
        location /static {
                root /var/www/html/go-fly;//自己的部署路径,静态文件直接nginx响应
        }        
        location / {
                proxy_pass http://127.0.0.1:8081;
                    proxy_http_version 1.1;
                    proxy_set_header X-Real-IP $remote_addr;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection "upgrade";
                    proxy_set_header Origin "";
        }
}