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SpringCloud微服务笔记-Nginx实现网关反向代理

背景

当前在SpringCloud微服务架构下，网关作为服务的入口尤为重要，一旦网关发生单点故障会导致整个服务集群瘫痪，为了保证网关的高可用可以通过Nginx的反向代理功能实现网关的高可用。

项目源码： https://github.com/taoweidong/Micro-service-learning/tree/SpringCloud-branch

项目架构图

Nginx作为反向代理服务器，代理后端网关服务，通过Nginx自带的负载均衡算法进行转发
Zull网关部署集群时，如果一台服务器发生故障，就会转发到另外一台机器上，服务正常访问，保证网关的高可用

具体部署

修改本地Host文件

（C:/Windows/System32/drivers/etc）编辑下面这个文件,修改里面ip对应的地址,因为要使用域名的不同来实现反向代理.

Nginx配置

下载

Nginx下载地址(Windows和Linux的配置一样)： http://nginx.org/en/download.html

配置

解压后，找到配置文件/nginx-1.12.2/conf/nginx.conf

详细配置

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
    
    #配置上游服务器网关端口集群
    upstream  backServer{
        # weight 权重：谁的的权重多，访问到哪个服务的几率就大
        server 127.0.0.1:8040 weight=1;
        server 127.0.0.1:8041 weight=1;
    }

    server {
        # 注意：如果使用域名进行反向代理的话，Nginx的端口必须是80
        listen       80;
        # 入口地址-对应域名地址
        server_name  www.taowd123.com;  

        location /ms {
            ### 指定上游服务器负载均衡服务器
            proxy_pass http://backServer/;
            index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        # 错误页面
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
      
    }
    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}