现有项目中使用到了nginx进行负载均衡和接口的定向分发。
客户端对服务端接口的访问是restful风格的url,例如
http://biz.abc.com:27788/interface/A1000/
http://biz.abc.com:27788/interface/A2000/
系统接口按类别分为核心业务接口和查询业务接口,在部署上按接口规模和类别,分布在不同的应用集群中。
在前端,部署了nginx服务器进行接口的负载均衡和定向分发。
nginx配置示例如下:
worker_processes 1;events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
include loadbalancing.conf;
server {
listen 8808;
server_name localhost;
location / {
root html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
loadbalancing.conf配置如下:
#负载均衡配置map $zone $loadbalancing
{
A1000 server_main_func_a;
A2000 server_main_func_b;
A3000 server_main_query_a;
A4000 server_main_query_b;
default default_server;
}
#主服务器组a
upstream server_main_func_a
{
server 192.168.100.1:7788;
server 192.168.100.2:7788;
server 192.168.100.3:7788;
}
#主服务器组b
upstream server_main_func_b
{
server 192.168.100.51:7788;
server 192.168.100.52:7788;
server 192.168.100.53:7788;
}
#查询服务器组a
upstream server_main_query_a
{
server 192.168.100.101:7788;
server 192.168.100.102:7788;
server 192.168.100.103:7788;
}
#查询服务器组b
upstream server_main_query_b
{
server 192.168.100.151:7788;
server 192.168.100.152:7788;
server 192.168.100.153:7788;
}
#缺省服务器组
upstream default_server
{
server 192.168.100.201:7788;
server 192.168.100.202:7788;
server 192.168.100.203:7788;
}
server
{
listen 27788;
server_name biz.abc.com;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
#带命令字地址访问
location ~ /interface/
{
proxy_pass_header Server;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Scheme $scheme;
if ( $request_uri ~ ^/interface/(w*) ) {
set $zone $1;
proxy_pass http://$loadbalancing;
}
}
location = /interface
{
proxy_pass_header Server;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Scheme $scheme;
set $zone $request_uri;
proxy_pass http://$loadbalancing;
}
}
将不同的接口定向到不同的集群,实现接口的定向分发。
对于不同类别的接口,应用层面都有一个集群来处理,实现负载。
-----------------
当系统某些应用功能更新时,不会影响用户的其他功能的使用。