項目中有個特殊的需求,根據請求URL的參數,做不同的反向代理,比如:賽事ID<1000很少有人查詢的賽事,映射到配置不好的機器上。将現在的賽事ID映射到配置好的機器上。
經過調研,決定使用openresty。
安裝openresty
找到opentesty的官方文檔,進行安裝
https://openresty.org/cn/installation.html
配置Nginx.conf
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiI0gTMx81dsQWZ4lmZf1GLlpXazVmcvwFciV2dsQXYtJ3bm9CX9s2RkBnVHFmb1clWvB3MaVnRtp1XlBXe0xCMy81dvRWYoNHLwEzX5xCMx8FesU2cfdGLwMzX0xiRGZkRGZ0Xy9GbvNGLpZTY1EmMZVDUSFTU4VFRR9Fd4VGdsYTMfVmepNHLrJXYtJXZ0F2dvwVZnFWbp1zczV2YvJHctM3cv1Ce-cmbw5yNzcjMxgzMhFjYwMzM5gTNzYzXyUzM1kDM2IzLcBTMyIDMy8CXn9Gbi9CXzV2Zh1WavwVbvNmLvR3YxUjLyM3Lc9CX6MHc0RHaiojIsJye.png)
user root;
worker_processes 1;
error_log logs/error.log;
events {
worker_connections 1024;
}
http {
upstream ECC_NODE1 {
server 172.16.74.71:9808;
}
upstream ECC_NODE2 {
server 172.16.214.241:9808;
}
upstream ECC_NODE3 {
server 10.29.180.242:9808;
}
server {
listen 80;
server_name ack.geexek.com;
location / {
set $backend '';
rewrite_by_lua_file '/root/work/lua/test.lua';
add_header Access-Control-Allow-Origin *;
proxy_next_upstream error timeout http_500 http_502 http_504;
proxy_read_timeout 60s;
proxy_set_header Host $host;
proxy_pass http://ECC_$backend;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_intercept_errors on;
index index.html index.htm;
}
}
}
編寫lua的腳本
= tonumber(ngx.var.arg_cmptId)
--ngx.say('cmptId:'..cmptId)
if(cmptId==16)
then
ngx.var.backend="NODE1";
elseif(cmptId==17)
then
ngx.var.backend="NODE2";
else
ngx.var.backend="NODE3";
end