How to log from lua to nginx?

Question

Nginx

There is logic written in lua, it works in nginx using HttpLuaModule.
How to log what is happening? The examples use something like ngx.log(ngx.ERR, "Error to get server number: ", err)
Works great. For debugging - in one log all the information.
There are different log levels. But... I can only see errors. How to write INFO log?

Answer 1

This is ?
wiki.nginx.org/HttpLuaModule#log_by_lua + wiki.nginx.org/HttpLuaModule#Nginx_log_level_constants