openresty_luapath_multihosts

host1.nginx.conf

# virtual host2 conf
server {
	listen 80;
	server_name host1.xxx.com;

	# Access log with buffer, or disable it completetely if unneeded
	access_log host1/logs/access.log combined buffer=16k;
	error_log host1/logs/error.log;

	# lor runtime
	location / {
		set $test_test "";
		set_by_lua_file $test_test ./luapath/init.lua;
		content_by_lua_file ./host1/app/main.lua;
	}
}

host2.nginx.conf

# virtual host2 conf
server {
	listen 80;
	server_name host2.xxx.com;

	# Access log with buffer, or disable it completetely if unneeded
	access_log host2/logs/access.log combined buffer=16k;
	error_log host2/logs/error.log;

	# lor runtime
	location / {
		set $test_test "";
		set_by_lua_file $test_test ./luapath/init.lua;
		content_by_lua_file ./host2/app/main.lua;
	}
}

lua_path_files.lua

-- File: luapath/path_system.lua -- generated by resty_lua_path.sh
return function()
	return "path1/?.lua;path2/?.lua;", "path3/?.so;path4/?.so;"
end

-- File: luapath/path_framework.lua - edit by hand
-- include server common lua file paths
return function()
	return "path1/?.lua;path2/?.lua;", "path3/?.so;path4/?.so;"
end

-- File: luapath/init.lua
local tconcat = table.concat

local spath = require "luapath.path_system"
local fpath = require "luapath.path_framework"

local sys_path, sys_cpath = spath()
local f_path, f_cpath = fpath()
package.path = tconcat({sys_path, f_path}, ";")
package.cpath = tconcat({sys_cpath, f_cpath}, ";")
return ""

nginx.conf

# main nginx conf file
pid tmp/nginx.pid;

worker_processes 4;
events {
    worker_connections 4096;
}

http {
    include ./mime.types;

    client_max_body_size 4m;   
    client_body_buffer_size 4m; 

    sendfile on;
    keepalive_timeout  65;
    charset utf8;

    lua_package_path "./?.lua;;";
    lua_package_cpath "./?.so;;";
    include ./sites-enabled/*.nginx.conf;
}

    

resty_lua_path.sh

#!/bin/bash -
path=$(pwd)
folder="${path}/luapath/"

mkdir -p $folder

package_path=$(resty -e 'ngx.say(package.path)')
package_cpath=$(resty -e 'ngx.say(package.cpath)')
cat << EOF > $folder/path_system.lua
return function()
        return "$package_path", "$package_cpath"
end
EOF

@noname007 正是因为不太知道这种做法可行否，才放到这里讨论下。
关于你说的 package.path和package.cpath 不停增长的问题，你可以看下： openresty ›用ab -k 压resty，越来越慢