18.Nginx与Lua灰度发布
安装 memcached
yum install -y memcached#启动memcached服务,端口11211,以nobody身份启动,-d后台模式运行
memcached -p11211 -u nobody -d
#将自己的IP设为灰度测试的IP
telnet 127.0.0.1 11211
set 119.32.216.122 0 0 1
1
quit
###安装 memcached for lua
wget https://github.com/openresty/lua-resty-memcached/archive/v0.11.tar.gztar -zxvf v0.11.tar.gz
mkdir -p /usr/local/share/lua/5.1
cp -r lua-resty-memcached-0.11/lib/resty /usr/local/share/lua/5.1
创建 test.lua 文件
clientIP=ngx.req.get_headers()["X-Real-IP"]if clientIP == nil then
clientIP=ngx.req.get_headers()["x_forwarded_for"]
end
if clientIP == nil then
clientIP=ngx.var.remote_addr
end
local memcached=require "resty.memcached"
local memc,err=memcached:new()
if not memc then
ngx.say("failed to instantiate memc:",err)
return
end
local ok,err =memc:connect("127.0.0.1",11211)
if not ok then
ngx.say("failed to connect:",err)
return
end
local res,flags,err =memc:get(clientIP)
--ngx.say("value key: ",res,clientIP)
if err then
ngx.say("failed to get clientIP",err)
return
end
if res == "1" then
ngx.exec("@server_test")
return
end
ngx.exec("@server_product")
nginx配置
server { listen 8867;
server_name www.siguoya.name;
root /usr/local/nginx/1.12.1/html;
location / {
content_by_lua_file /etc/nginx/test.lua;
}
location /hello {
default_type text/plain;
content_by_lua "ngx.say("hello lua")";
}
location /ua {
default_type text/plain;
content_by_lua "
clientIP=ngx.req.get_headers()["USER-AGENT"]
ngx.say("IP:",clientIP)
";
}
location @server_product {
default_type text/plain;
return 200 "product";
}
location @server_test {
default_type text/plain;
return 200 "test";
}
}
由于我们将 119.32.216.122
这个IP添加进了memcached
中,因此访问 http://www.siguoya.name:8867/
的时候,看到的内容就是 test
而开启全局代理之后,发现看到的内容就是 product
,这样就实现了针对部分用户进行灰度测试的效果
专题阅读
- 1. Nginx的优点
- 2. Nginx的安装与开机自启
- 3. Nginx目录和配置语法
- 4. Nginx模块
- 5. Nginx静态资源处理
- 6. Nginx浏览器缓存原理
- 7. Nginx资源的跨域访问
- 8. Nginx资源的防盗链
- 9. Nginx代理
- 10. Nginx负载均衡
- 11. Nginx缓存
- 12. Nginx动静分离
- 13. Nginx Rewrite
- 14. Nginx Secure Link
- 15. Nginx Geo
- 16. Nginx HTTPS服务
- 17. Nginx与Lua开发
- 18. Nginx与Lua灰度发布
- 19. Nginx常见错误
- 20. Nginx性能优化
- 21. Nginx安全管理
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