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Posted to notifications@apisix.apache.org by "downtown12 (via GitHub)" <gi...@apache.org> on 2023/04/10 09:50:42 UTC
[GitHub] [apisix] downtown12 opened a new issue, #9280: help request: Can't import the built-in plugin `prometheus`, and error.log says 'exporter' is a number value
downtown12 opened a new issue, #9280:
URL: https://github.com/apache/apisix/issues/9280
### Description
APISIX Version: 3.2.0
deployment: from source code. Has run `make install` and succeed returned
config.yaml(snippets):
```
plugins:
- prometheus
- file-logger
```
start command: apisix start
error detail(from error.log):
```
2023/04/10 16:17:58 [error] 1320262#1320262: init_worker_by_lua error: /chj/apisix-3.2.0/apisix/plugins/prometheus.lua:39: attempt to index local 'exporter' (a number value)
stack traceback:
/chj/apisix-3.2.0/apisix/plugins/prometheus.lua:39: in main chunk
[C]: in function 'require'
/chj/apisix-3.2.0/apisix/plugins/prometheus/exporter.lua:20: in main chunk
[C]: in function 'require'
/chj/apisix-3.2.0/apisix/plugin.lua:740: in function 'init_worker'
/chj/apisix-3.2.0/apisix/init.lua:148: in function 'http_init_worker'
init_worker_by_lua:2: in main chunk
```
it seems `apisix/plugins/prometheus/exporter.lua:20` want to `require ('prometheus')` but failed.
however, the `prometheus` lua module is actually already in my lua_package_path, which is
```
"/chj/apisix-3.2.0/apisix/plugins/?.lua;/chj/apisix-3.2.0//deps/share/lua/5.1/?.lua;/chj/apisix-3.2.0//deps/share/lua/5.1/?/init.lua;
```
when I use APISIX 3.1.0(while the other conditions keep unchanged), the error diapears.
I wonder whether some changes in APISIX 3.2.0 makes this error
### Environment
- APISIX version (run `apisix version`): 3.2.0
- Operating system (run `uname -a`): 3.10.0-1062.9.1.el7.x86_64
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`): nginx version: openresty/1.21.4.1
- etcd version, if relevant (run `curl http://127.0.0.1:9090/v1/server_info`): NA
- APISIX Dashboard version, if relevant: NA
- Plugin runner version, for issues related to plugin runners: NA
- LuaRocks version, for installation issues (run `luarocks --version`): 3.8.0
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[GitHub] [apisix] downtown12 commented on issue #9280: help request: Can't import the built-in plugin `prometheus`, and error.log says 'exporter' is a number value
Posted by "downtown12 (via GitHub)" <gi...@apache.org>.
downtown12 commented on issue #9280:
URL: https://github.com/apache/apisix/issues/9280#issuecomment-1501732447
Problem solved.
The reason is a mistaken sequence I made, which cause LuaJIT choosing lua_package_path not as desire
`/apisix-3.2.0/apisix/plugins/prometheus.lua:39: attempt to index local 'exporter' (a number value)`
The reason of the error log above is that I add a `lua_extra_path` config to my `conf/config.yaml` file, which is:
`extra_lua_path: "/chj/apisix-3.2.0/apisix/plugins/?.lua"`
then when APISIX running, the `lua_package_path` becomes:
`/chj/apisix-3.2.0/apisix/plugins/?.lua;/chj/apisix-3.2.0//deps/share/lua/5.1/?.lua;/chj/apisix-3.2.0//deps/share/lua/5.1/?/init.lua;...`
so as the error stack shows, `apisix/plugins/prometheus/exporter.lua:20` tries to find the `prometheus` module.
The lua-land will firstly try to find it in `/chj/apisix-3.2.0/apisix/plugins/?.lua`(the left head of `lua_package_path`), then `/chj/apisix-3.2.0//deps/share/lua/5.1/?.lua`.
lua-land will hit `/chj/apisix-3.2.0/apisix/plugins/prometheus.lua` then use it. But the real file the `exporter.lua` wanna to find is `/chj/apisix-3.2.0//deps/share/lua/5.1/prometheus.lua`(The behind but the RIGHT module)...
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[GitHub] [apisix] downtown12 commented on issue #9280: help request: Can't import the built-in plugin `prometheus`, and error.log says 'exporter' is a number value
Posted by "downtown12 (via GitHub)" <gi...@apache.org>.
downtown12 commented on issue #9280:
URL: https://github.com/apache/apisix/issues/9280#issuecomment-1501745161
Still don't know why this bug not exposed in my 3.1.0 env...
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[GitHub] [apisix] downtown12 closed issue #9280: help request: Can't import the built-in plugin `prometheus`, and error.log says 'exporter' is a number value
Posted by "downtown12 (via GitHub)" <gi...@apache.org>.
downtown12 closed issue #9280: help request: Can't import the built-in plugin `prometheus`, and error.log says 'exporter' is a number value
URL: https://github.com/apache/apisix/issues/9280
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