Lua logging

donatas.abraitis · 2014-09-06T23:00:54+00:00

Ok, will use resty lru cache. Thx > On Sep 7, 2014, at 5:39 PM, "Yichun Zhang (agentzh)" <age...@gmail.com> wrote: > > Hello! &gt...

Lua logging

donatas.abraitis

Hello everyone,

Is it possible to catch what is logging to error_log and handle this output by lua instead of writing to error_log?

Goal is to avoid logging to hard drive.

Thank you.

agentzh

Hello!

On Sat, Sep 6, 2014 at 8:00 AM, Donatas Abraitis wrote:
> Is it possible to catch what is logging to error_log and handle this output
> by lua instead of writing to error_log?
>
> Goal is to avoid logging to hard drive.
>

The "error_log" directive supports syslog, by which you can avoid
writing to a local file:

    http://nginx.org/en/docs/ngx_core_module.html#error_log

Regards,
-agentzh

donatas.abraitis

Hey,

yes, this I know, but what if I want to handle error_log and send it to redis/mysql/memcache, etc?

On Saturday, September 6, 2014 6:00:56 PM UTC+3, Donatas Abraitis wrote:

Hello everyone,

Is it possible to catch what is logging to error_log and handle this output by lua instead of writing to error_log?

Goal is to avoid logging to hard drive.

Thank you.

agentzh

Hello!

On Mon, Sep 8, 2014 at 7:28 AM, Donatas Abraitis wrote:
> yes, this I know, but what if I want to handle error_log and send it to
> redis/mysql/memcache, etc?
>

Not directly. The error_log facility in the nginx core does not
provide any C-level hooks for 3rd-party modules like ngx_lua to add
custom processors. You can either

1. request a C-land hook in error_log in the official nginx mailing list, or

2. customize your syslog server to do further data pushing to
redis/mysql/memcached/etc.

Regards,
-agentzh