Openresty+Lua 实现项目灰度发布
Posted Json2011315
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1.安装OpenResty
【使用yum安装】
[root@localhost ~]# yum-config-manager --add-repo https://openresty.org/yum/cn/centos/OpenResty.repo
[root@localhost ~]# yum -y install openresty
常用命令：
【平滑启动】
[root@localhost ~]# /usr/local/openresty/nginx/sbin/nginx -s reload
【启动】
[root@localhost ~]# /usr/local/openresty/nginx/sbin/nginx
【关闭】
[root@localhost ~]# /usr/local/openresty/nginx/sbin/nginx -s stop
2.关闭nginx代码缓存，修改lua脚本不需要重启
[root@localhost nginx]# vim conf/nginx.conf
http
include mime.types;
default_type application/octet-stream;
#关闭代码缓存 。修改lua脚本不需要重启
lua_code_cache off;
修改后需要重启（会提示cache已经关闭）：
[root@localhost nginx]# /usr/local/openresty/nginx/sbin/nginx -s reload
nginx: [alert] lua_code_cache is off; this will hurt performance in /usr/local/openresty/nginx/conf/nginx.conf:21
2.编写lua脚本
进入openresty的lualib库
[root@localhost ~]# cd /usr/local/openresty/lualib/
创建自己的库目录
[root@localhost lualib]# mkdir -p myself_project/test
[root@localhost myself_project]# pwd
/usr/local/openresty/lualib/myself_project
[root@localhost myself_project]# ls
test
[root@localhost myself_project]# cd test/
#编写lua脚本
[root@localhost test]# vim test.lua
ngx.header.content_type="text/plian"
--获取请求参数
--参考地址：https://github.com/openresty/lua-nginx-module#lua_need_request_body
--demo http://127.0.0.1?ver=1.0 http://127.0.0.1?ver=2.0
ngx.req.read_body()
--获取请求数据
local post_args_tab,err=ngx.req.get_post_args()
--ngx.say(type(post_args_tab))
if not post_args_tab then
ngx.say('请拼接提交参数')
return
end
--获取请求参数
local request_data=
for k,v in pairs(post_args_tab) do
request_data[k]=v
end
--判断版本控制参数是否存在
if not request_data['ver'] then
ngx.say('ver not is null')
return
end
--[[
--循环查看数据
for key,item in pairs(request_data) do
ngx.say('key',key)
ngx.say('item',item)
end
ngx.say(request_data['ver'])
ngx.exit(200)
--]]
--根据版本号判断跳转，初始化灰度发布的版本号
local ver=math.floor(2.0)
--版本是2.0跳转 test2 [代表是新版代码灰度发布]
--使用的知识点是ngx.exec内部重定向
--地址：https://github.com/openresty/lua-nginx-module#ngxexec
if math.floor(request_data['ver']) == ver then
--ngx.say(2.0)
ngx.exec("@test2")
return
end
--其它版本跳转test
--ngx.say(1.0)
ngx.exec("@test1")
3.创建 test1 test2项目
[root@localhost nginx]# pwd
/usr/local/openresty/nginx
[root@localhost nginx]# cd html/
[root@localhost html]# mkdir -p test1 test2
[root@localhost html]# cd test1
[root@localhost test1]# vim index.html
<!DOCTYPE html>
<html>
<head>
<title>Welcome to OpenResty!</title>
<style>
body
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
</style>
</head>
<body>
<h1>Welcome to OpenResty!</h1>
<p>If you see this page, the OpenResty web platform is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<h2>===========test1================</h2>
<p><em>Thank you for flying OpenResty.</em></p>
</body>
</html>
[root@localhost html]# cd test2
[root@localhost test1]# vim index.html
<!DOCTYPE html>
<html>
<head>
<title>Welcome to OpenResty!</title>
<style>
body
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
</style>
</head>
<body>
<h1>Welcome to OpenResty!</h1>
<p>If you see this page, the OpenResty web platform is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<h2>===========test2======新版项目==========</h2>
<p><em>Thank you for flying OpenResty.</em></p>
</body>
</html>
赋值权限
[root@localhost nginx]# chmod -R 777 html
4.编辑nginx.conf，引入lua脚本，使用nginx_proxy upstream
[root@localhost nginx]# vim conf/nginx.conf
#test1(默认项目代码)
upstream test1
server 192.168.11.200:9091;
#test2(新版代码)
upstream test2
server 192.168.11.200:9092;
server
listen 80;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
location /
root html;
index index.html index.htm;
#引入lua脚本
content_by_lua_file /usr/local/openresty/lualib/myself_project/test/test.lua;
#默认环境
location @test1
proxy_pass http://test1;
#新版代码（灰度发布）
location @test2
proxy_pass http://test2;
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html
root html;
#引入vhosts
include vhosts/*.conf;
5.创建vhosts目录，test1.conf test2.conf
[root@localhost conf]# pwd
/usr/local/openresty/nginx/conf
[root@localhost conf]# mkdir vhosts
[root@localhost conf]# cd vhosts/
[root@localhost vhosts]# pwd
/usr/local/openresty/nginx/conf/vhosts
#编辑test1.conf
[root@localhost vhosts]# vim test1.conf
server
listen 9091;
server_name www.test1.com;
#charset koi8-r;
#access_log logs/host.access.log main;
location /
root /usr/local/openresty/nginx/html/test1;
index index.html index.htm;
#try_files $uri $uri/ /index.php$is_args$args;
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html
root html;
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \\.php$
# proxy_pass http://127.0.0.1;
#
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \\.php$
# root /usr/local/openresty/nginx/html/test1;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
# include fastcgi_params;
#
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\\.ht
# deny all;
#
#编辑test2.conf
[root@localhost vhosts]# vim test2.conf
server
listen 9092;
server_name www.test2.com;
#charset koi8-r;
#access_log logs/host.access.log main;
location /
root /usr/local/openresty/nginx/html/test2;
index index.html index.htm;
#try_files $uri $uri/ /index.php$is_args$args;
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html
root html;
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \\.php$
# proxy_pass http://127.0.0.1;
#
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \\.php$
# root /usr/local/openresty/nginx/html/test2;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
# include fastcgi_params;
#
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\\.ht
# deny all;
#
6.重启Openresty
[root@localhost ~]# /usr/local/openresty/nginx/sbin/nginx -s reload
nginx: [alert] lua_code_cache is off; this will hurt performance in /usr/local/openresty/nginx/conf/nginx.conf:21
7.postman访问
访问灰度环境代码
访问灰度正式代码
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