Nginx Lua 根据参数请求转发的实现
作者：tianv5
本文介绍了如何使用Nginx和Lua脚本实现基于参数的请求转发,文章详细说明了配置方法,并提供了示例代码,帮助读者理解如何通过NginxLua模块根据请求参数将流量转发到不同后端服务,这种方法有助于实现灵活的负载均衡和动态内容处理
环境安装
mkdir /usr/local/LuaJIT cd /usr/local/LuaJIT wget http://luajit.org/download/LuaJIT-2.0.2.tar.gz tar -xvf LuaJIT-2.0.2.tar.gz export LUAJIT_LIB=/usr/local/lib export LUAJIT_INC=/usr/local/include/luajit-2.0 mkdir /usr/local/nginx cd /usr/local/nginx wget https://github.com/simpl/ngx_devel_kit/archive/v0.3.0.tar.gz wget https://github.com/openresty/lua-nginx-module/archive/v0.10.9rc7.tar.gz wget http://nginx.org/download/nginx-1.12.1.tar.gz tar -xvf v0.3.0.tar.gz tar -xvf v0.10.9rc7.tar.gz tar -xvf nginx-1.12.1.tar.gz cd nginx-1.12.1 ./configure --prefix=/usr/local/nginx --add-module=../ngx_devel_kit-0.3.0 --add-module=../lua-nginx-module-0.10.9rc7 make make install
验证
vi conf/nginx.conf
location /hello{
default_type 'text/plain';
content_by_lua 'ngx.say("hello,lua")';
}
# 启动
sbin/nginx
# 验证，返回 hello,lua 安装成功
curl 127.0.0.1:80/hello
nginx lua 转发
location /aa {
internal;
default_type 'text/plain';
content_by_lua 'ngx.say("AAAAA")';
}
location /bb {
internal;
default_type 'text/plain';
content_by_lua 'ngx.say("BBBBB")';
}
location /dis {
content_by_lua_file "lua/dis.lua";
}
# lua脚本 dis.lua
local request_method = ngx.var.request_method
local arg=nil
if request_method == "GET" then
arg = ngx.req.get_uri_args()['name']
elseif request_method == "POST" then
ngx.req.read_body()
arg = ngx.req.get_post_args()['name']
end
if arg == "gg" then
ngx.exec('/aa')
else
ngx.exec('/bb')
# 测试 curl 127.0.0.1:80/dis?name=gg curl 127.0.0.1:80/dis?name=mm curl 127.0.0.1:80/dis
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