52-基于OpenResty部署应用层nginx以及nginx-lua开发helloworld

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1、部署第一个nginx，作为应用层nginx（192.168.332.61那个机器上）

部署OpenResty

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#使用root用户安装
yum install -y readline-devel pcre-devel openssl-devel gcc

#使用bigdata用户安装
cd /home/bigdata/software
wget http://openresty.org/download/openresty-1.13.6.1.tar.gz
tar -zxvf /home/bigdata/software/openresty-1.13.6.1.tar.gz -C /export/servers/

cd /export/servers/openresty-1.13.6.1/bundle/LuaJIT-2.1-20171103/
make clean && make && make install
ln -sf luajit-2.1.0-alpha /usr/local/bin/luajit

cd /export/servers/openresty-1.13.6.1/bundle 
wget https://github.com/FRiCKLE/ngx_cache_purge/archive/2.3.tar.gz
tar -xvf 2.3.tar.gz

cd /export/servers/openresty-1.13.6.1/bundle
wget https://github.com/yaoweibin/nginx_upstream_check_module/archive/v0.3.0.tar.gz
tar -xvf v0.3.0.tar.gz

cd /export/servers/openresty-1.13.6.1
./configure --prefix=/export/servers --with-http_realip_module  --with-pcre  --with-luajit --add-module=./bundle/ngx_cache_purge-2.3/ --add-module=./bundle/nginx_upstream_check_module-0.3.0/ -j2

make && make install

cd /export/servers/
ll
#显示有以下结果
/export/servers/luajit
/export/servers/lualib
/export/servers/nginx
/export/servers/nginx/sbin/nginx -V

#使用root启动nginx，否则会报错
#原因：the socket API bind() to a port less than 1024, such as 80 as your title mentioned, need root access.
/export/servers/nginx/sbin/nginx

nginx+lua开发的hello world

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vi /export/servers/nginx/conf/nginx.conf

在http部分添加：

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...
lua_package_path "/export/servers/lualib/?.lua;;";
lua_package_cpath "/export/servers/lualib/?.so;;";
...

/export/servers/nginx/conf下，创建一个lua.conf

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cd /export/servers/nginx/conf
vi lua.conf

server {
	listen 80;
	server_name _;
}

在nginx.conf的http部分添加：

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vi /export/servers/nginx/conf/nginx.conf
include lua.conf;

验证配置是否正确：

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#使用root用户执行
/export/servers/nginx/sbin/nginx -t

在lua.conf的server部分添加：

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vi /export/servers/nginx/conf/lua.conf
	location /lua {
	default_type 'text/html';
	content_by_lua 'ngx.say("hello world")';
}

#使用root用户执行
/export/servers/nginx/sbin/nginx -t

重新nginx加载配置

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/export/servers/nginx/sbin/nginx -s reload

访问 http://192.168.33.61/lua

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cd /export/servers/nginx/conf/lua/
vi test.lua

ngx.say("hello world");

修改lua.conf

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vi /export/servers/nginx/conf/lua.conf
	location /lua {
		default_type 'text/html';
		content_by_lua_file conf/lua/test.lua; 
	}

查看异常日志

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tail -f /export/servers/nginx/logs/error.log

工程化的nginx+lua项目结构

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mkdir -p /home/bigdata/ngnix-test
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#修改nginx.conf 把user 改成有权限的用户（当前用户）
#否则会报nginx_bug（1）：failed to load external Lua file "xxxx.lua": cannot open xxxx.lua: Permission denied 错误
vi /export/servers/nginx/conf/nginx.conf

#user nobody;
# 改成 --> user [用户名].根据实际情况修改
user bigdata

项目工程结构

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ngnix-test
    ngnix-test.conf     
    lua              
		ngnix-test.lua
    lualib            
		*.lua
		*.so

放在/home/bigdata/ngnix-test目录下

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vi /export/servers/nginx/conf/nginx.conf

http {
    include       mime.types;
    default_type  application/octet-stream;

	lua_package_path "/home/bigdata/ngnix-test/lualib/?.lua;;";
	lua_package_cpath "/home/bigdata/ngnix-test/lualib/?.so;;";
	include /home/bigdata/ngnix-test/ngnix-test.conf;
}

cd /home/bigdata/ngnix-test/
vi ngnix-test.conf

server {
    listen       80;  
    server_name  _;

	location /ngnix-test {
		default_type 'text/html';
		content_by_lua_file /home/bigdata/ngnix-test/lua/ngnix-test.lua;
	}
}

mkdir -p /home/bigdata/ngnix-test/lua
cd /home/bigdata/ngnix-test/lua
vi ngnix-test.lua

ngx.say("hello world");

mkdir -p /home/bigdata/ngnix-test/lualib
cp -r /export/servers/lualib/ /home/bigdata/ngnix-test/

#使用root用户执行
/export/servers/nginx/sbin/nginx -s reload

访问 http://192.168.33.61/ngnix-test

如法炮制，在其余机器上，也用OpenResty部署一个nginx

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scp -r /home/bigdata/ngnix-test/ bigdata@192.168.33.63:/home/bigdata/
scp -r /export/servers/nginx/conf/nginx.conf bigdata@192.168.33.63:/export/servers/nginx/conf/nginx.conf