Spring Cloud GateWay网关集群搭建

女爷i 2022-11-27 03:17 328阅读 0赞

## Spring Cloud GateWay网关集群搭建 ##

1.环境  
nginx: 1.19.0

nacos: 1.3.1

openjdk: 1.8.0\_181

nacos集群：  
192.168.8.81  
192.168.8.82  
192.168.8.83

2.实现网关注册nacos中心  
1）配置依赖pom.xml

*  因为是搭建网关集群，每一个网关应用使用的依赖都是一致的

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center]

2)修改配置文件

配置网关服务gatewaya的nacos集群注册中心地址、端口号

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 2]

配置网关服务gatewayb的nacos集群注册中心地址、端口号  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 3]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 4]

3.实现网关转发至服务  
1）配置路由

配置网关服务gatewaya支持跨域访问及连接超时时间

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 5]

配置网关服务gatewaya的路由转发到在注册中心已注册服务nacos-provider  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 6]

配置网关服务gatewayb支持跨域访问及连接超时时间

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 7]

配置网关服务gatewaya的路由转发到在注册中心已注册服务nacos-consumer

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 8]

4.nacos-discovery实现数据访问  
1）nacos-provider添加访问路径

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 9]

2）nacos-consumer添加访问路径  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 10]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 11]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 12]

5.nginx实现负载均衡  
1）安装nginx

yum install nginx

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 13]

2）修改配置文件

修改nginx.conf文件 ，配置网关集群的负载均衡

cd /usr/local/nginx/conf

vim nginx.conf  
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\#gzip on;  
upstream gateways \{  
server 192.168.6.29:9527 weight=1;  
server 192.168.6.29:9528 weight=1;  
\}

server \{  
listen 80;  
server\_name 192.168.6.29;  
charset utf8;

\#charset koi8-r;

\#access\_log logs/host.access.log main;

location / \{  
\#root html;  
\#index index.html index.htm;  
proxy\_pass http://gateways;  
proxy\_set\_header Host $host;  
proxy\_set\_header X-Real-IP $remote\_addr;  
proxy\_set\_header X-Forwarded-For $proxy\_add\_x\_forwarded\_for;  
\}

6.测试网关集群  
启动nacos-provider、nacos-consumer、gatewaya、gatewayb应用，并进入nacos注册中心查询服务列表

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjUwNjE2_size_16_color_FFFFFF_t_70_pic_center 15]

测试gatewaya设置的路由test\_a、test\_c和gatewayb设置的路由test\_a，浏览器访问http://192.168.8.81/hello ，转发到gatewaya时页面返回Hello Gateway A！字符串，转发到gatewayb时页面返回字符串Hello Gateway B！;

![在这里插入图片描述][20200813134908784.gif_pic_center]

测试gatewayb设置的路由test\_b,浏览器访问http://192.168.8.81/hello-rest/ayay,转发到gatewaya时返回404页面，转发到gatewayb时页面返回字符串ayay;

测试gatewayb设置的路由test\_c，浏览器访问http://192.168.8.81/hello-feign/heihei 转发到gatewaya时返回404页面，转发到gatewayb时页面返回字符串heihei;  
![在这里插入图片描述][20200813134929656.gif_pic_center]

*  此处的原理是nginx监听端口80，监听到访问后将请求转发给gatewaya和gatewayb，权重weight分别设置为1，即两次访问，gatewaya和gatewayb分别会有50%的等概率会被转发到，接着gatewaya和gatewayb根据访问路径匹配相应的路由，gatewaya和gatewayb分别配置了三个路由，都会分别获取到注册的服务nacos-provider和nacos-consumer，通过路径转到注册服务相应的访问路径获取数据

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