Gray OpenResty to achieve the project's release

1, the installation openresty dependent modules:

[root@Centos opt]# yum -y install pcre-devel openssl openssl-devel postgresql-devel

2, compile and install openresty:

[root @ Centos opt] # tar -zxvf openresty- 1.15 . 8.2 . tar .gz 
... (content omitted) ... 
[root @ Centos opt] # cd openresty - 1.15 . 8.2 / 
[root @ Centos openresty - 1.15 . 8.2 ] # LL 
total volume of 112 
drwxrwxr the -X-. 47 Hacker 1003   4096 . 11 dated 12 is  23 is : 35 Build 
drwxrwxr the -X-. 46 is Hacker 1003   4096 . 8 dated   29  13 is : 33 is bundle
-rwxrwxr-x.  1 hacker 1003 52432 8月  29 13:32 configure
-rw-rw-r--.  1 hacker 1003 22924 8月  29 13:32 COPYRIGHT
-rw-r--r--.  1 root   root  5980 11月 12 23:36 Makefile
drwxrwxr-x.  2 hacker 1003   203 8月  29 13:32 patches
-rw-rw-r--.  1 hacker 1003  4689 8月  29 13:32 README.markdown
-rw-rw-r--.  1 hacker 1003  8972 8月  29 13:32 README-windows.txt
drwxrwxr-x.  2 hacker 1003    52 8月  29 13:32 util
[root@Centos openresty-1.15.8.2]# ./configure --prefix=/usr/local/openresty --with-luajit --without-http_redis2_module --with-http_iconv_module --with-http_postgres_module
... (content omitted) ... 
[root @ Centos openresty - 1.15 . 8.2 ] # && gmake gmake install 
... (content omitted) ...

3, edit nginx.conf file, edit the content as follows:

http {
    include       mime.types;
    default_type  application/octet-stream;
    
    sendfile        on;
    keepalive_timeout  65;
    
    lua_shared_dict ups_zone 1m; # 定义upstream共享内存空间

    upstream web-cluster {
        server 127.0.0.1:8087;
        server 127.0.0.1:8088;
    }

    upstream web-8087 {
        server 127.0.0.1:8087;
    }

    upstream web-8088 {
        server 127.0.0.1:8088;
    }


    server {
        listen       80;
        server_name  localhost;
        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location /forward {
            default_type text/html;
            content_by_lua_block {
               local host = ngx.req.get_uri_args()["host"]
               local key = "switchKey"
               ngx.shared.ups_zone:set(key, host)
               local forward_ip = ngx.shared.ups_zone:get(key)
               ngx.say("Successfully, forwarded host is: ", forward_ip)
            }
        }
        
        location ~ /web/(.*) {
           set_by_lua_block $my_ups {
               local key = ngx.shared.ups_zone:get("switchKey")
               if key == nil or key == "default" then
                  return "web-cluster"
               else
                  local port = string.sub(key, -4)
                  if port == "8087" then
                     return "web-8087"
                  elseif port == "8088" then
                     return "web-8088"
                  end
               end

           }

           proxy_pass http://$my_ups/$1;

        }

    }
}

4, test whether the effect:

(1) The default load balancing mode:

[root@Centos conf]# curl http://127.0.0.1/forward?host=default
Successfully, forwarded host is: default
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# 

(2) all requests to transfer 8087 server:

[root@Centos conf]# curl http://127.0.0.1/forward?host=127.0.0.1:8087
Successfully, forwarded host is: 127.0.0.1:8087
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8087 server
[root@Centos conf]# 

(3) all requests to transfer 8088 server:

[root@Centos conf]# curl http://127.0.0.1/forward?host=127.0.0.1:8088
Successfully, forwarded host is: 127.0.0.1:8088
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# curl http://127.0.0.1/web/lua
8088 server
[root@Centos conf]# 

 

 

Reference books: "OpenResty Best Practices" PDF version, "OpenResty entirely Development Guide"