启动时报错！！！ about abtestinggateway HOT 16 OPEN

经过对openresty各版本的比对，我发现api ngx_http_lua_ffi_sema_new的引入是从当前最新版本openresty-1.9.15.1开始的，所以没有发现，看来我的锅轻一点了 :)

解决这个问题的终极办法是，如果想用semaphore的话，每次使用lua-resty-core的时候，需要将lua-resty-core/lib/ngx 和 lua-resty-core/lib/resty 的版本与openresty保持一直，简单粗暴的方法就是，从/usr/local/oprensty/lualib中将ngx和resty目录 copy 到ABTestingGateway的lib/lua-resty-core目录下替换；

解决这个问题的终极办法是，如果想用semaphore的话，每次使用lua-resty-core的时候，需要将lua-resty-core/lib/ngx 和 lua-resty-core/lib/resty 的版本与openresty保持一直，简单粗暴的方法就是，从/usr/local/oprensty/lualib中将ngx和resty目录 copy 到ABTestingGateway的lib/lua-resty-core目录下替换；

我之所以没有将lua_package_path中的路径直接指定到openresty的路径下，原因是1、我们使用的tengine，所以lua-resty-core等lib需要从目录外指定；2、运维人员应该拥有自己指定lib路径的权力。

这样的话，我仍然将本repo中的lib-resty-core保持原状，然后在readme中说明吧。

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configure arguments: --with-ld-opt=-Wl,-rpath,/usr/local/web/LuaJIT-2.0.1/lib --with-luajit-inc=/usr/local/web/LuaJIT-2.0.1/include/luajit-2.0 --with-luajit-lib=/usr/local/web/LuaJIT-2.0.1/lib --without-http_rewrite_module --add-module=../lua-nginx-module-0.10.4

因为 --without-http_rewrite_module 了，所以set指令不生效

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这是redis的unix socket
domain的访问接口，如果自动生成的话，一般是redis启动时生成的，如果你不想用的话，可以在配置文件中取消这个配置。

On Mon, May 23, 2016 at 2:33 PM, niuhp [email protected] wrote:

访问ab_admin报错了，提示
/tmp/redis.sock failed (2: No such file or directory)
请问这个文件什么时候生成，什么时候使用

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#27 (comment)

黄振栋
[email protected]
Phone：15010359288
personal site: https://bg2bkk.github.io

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现在就剩这个了，访问8030端口提示ngx_http_lua_ffi_semaphore_new未定义，，
lua entry thread aborted: runtime error: ../lib/lua-resty-core/lib/ngx/semaphore.lua:64: /usr/local/lib/libluajit-5.1.so.2: undefined symbol: ngx_http_lua_ffi_semaphore_new

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请问你的luajit用的是哪个版本的，LuaJIT-2.1可以在openresty软件包中获得

On Mon, May 23, 2016 at 2:54 PM, niuhp [email protected] wrote:

现在就剩这个了，访问8030端口提示ngx_http_lua_ffi_semaphore_new未定义，，
lua entry thread aborted: runtime error:
../lib/lua-resty-core/lib/ngx/semaphore.lua:64:
/usr/local/lib/libluajit-5.1.so.2: undefined symbol:
ngx_http_lua_ffi_semaphore_new

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#27 (comment)

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是2.1.0啊

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http://luajit.org/download.html

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没有遇到过你的错误，用openresty软件包中维护的LuaJIT看看呢？
试一下，不行我再想想别的原因

On Mon, May 23, 2016 at 3:28 PM, niuhp [email protected] wrote:

http://luajit.org/download.html

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#27 (comment)

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@niuhp 访问8030端口提示ngx_http_lua_ffi_semaphore_new未定义
这个解决了吗?我也遇到了。CentOS7下

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你好，这个是ngx_lua比较新的版本中带有的 resty.semaphore模块，请确定ngx_lua版本包含该模块

On Sun, Jun 19, 2016 at 2:42 PM, noodles-v6 [email protected]
wrote:

@niuhp https://github.com/niuhp
访问8030端口提示ngx_http_lua_ffi_semaphore_new未定义
这个解决了吗?我也遇到了。CentOS7下

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#27 (comment),
or mute the thread
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.

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我用的openresty 最新版本, luajit2.1.0beta2, 也是同样的问题

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请问是哪个问题？

On Thu, Jul 28, 2016 at 11:03 AM, 郭华伟 [email protected] wrote:

我用的openresty 最新版本, luajit2.1.0beta2, 也是同样的问题

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#27 (comment),
or mute the thread
https://github.com/notifications/unsubscribe-auth/AA0sgQXMlo0kLREMK_AicdZalNAztJnaks5qaBv3gaJpZM4Ii9Xy
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lua entry thread aborted: runtime error: ../lib/lua-resty-core/lib/ngx/semaphore.lua:64: /usr/local/lib/libluajit-5.1.so.2: undefined symbol: ngx_http_lua_ffi_semaphore_new

反复测试了好几遍,始终如此

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你好，这个问题是api的更新，曾经也出现过这样的问题中已经解决了，

但是出现这个问题的原因是我版本中的lua-resty-lib没有更新到最新版，仍然使用了ngx_http_lua_ffi_semaphore_new，而新版已经是ngx_http_lua_ffi_sema_new了，这点我很抱歉。之所以一直没有发现，原因是我开发时采用的是tengine+luajit+lua-resty-lib，我当时的ngx_lua版本和lua-resty-lib契合，所以没有报错；当我采用新版openresty时没有进行深入测试，非常抱歉，我正在修复和测试

但是你的问题在于，使用了非openresty维护的luajit版本，openresty维护的LuaJIT是2.1版本以上了，会有与ngx有关的更新，而你是从官方下载的LuaJIT，编译是不会通过的

checking for LuaJIT library in /home/huang/workspace/oss/LuaJIT-2.1.0-beta2/lib and /home/huang/workspace/oss/LuaJIT-2.1.0-beta2/include/luajit-2.1 (specified by the LUAJIT_LIB and LUAJIT_INC env, with -ldl) ... not found
checking for LuaJIT library in /home/huang/workspace/oss/LuaJIT-2.1.0-beta2/lib and /home/huang/workspace/oss/LuaJIT-2.1.0-beta2/include/luajit-2.1 (specified by the LUAJIT_LIB and LUAJIT_INC env) ... not found
        ./configure: error: ngx_http_lua_module requires the Lua or LuaJIT library and LUAJIT_LIB is defined as /home/huang/workspace/oss/LuaJIT-2.1.0-beta2/lib and LUAJIT_INC (path for lua.h) /home/huang/workspace/oss/LuaJIT-2.1.0-beta2/include/luajit-2.1, but we cannot find LuaJIT there.

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经过测试，我换用 lua-resty-core的v0.1.6 tag可以正常使用，目前该项目的master分支是v0.1.7rc+了，我不知道如何指定tag作为git项目的sub module，所以我将所需lua-resty-core手动放到我的项目里，然后在README中指明。

非常感谢你的反馈，欢迎使用

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运行时日志报错，index变量错误是什么原因呢：
2019/11/06 12:11:17 [error] 1606#1606: *36 lua entry thread aborted: runtime error: /root/ABTestingGateway/utils/../admin/ab_action.lua:16: attempt to index local 'systemConf' (a userdata value)
stack traceback:
coroutine 0:
/root/ABTestingGateway/utils/../admin/ab_action.lua: in main chunk, client: 127.0.0.1, server: localhost, request: "POST /ab_admin?action=policygroup_set HTTP/1.1", host: "127.0.0.1:8080"

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