Crashing openresty?

sharepadco · 2013-09-26T03:12:04+00:00

haa thanks agentzh :D~On Wednesday, September 25, 2013 10:41:57 AM UTC+8, agentzh wrote:Hello! On Tue, Sep 24, 2013 at 6:37 PM, Payne Chu wrote: > Thanks...

Crashing openresty?

sharepadco

Hi list,

Today, we dark launched our SharePad application (http://sharepad.co).

SharePad is implemented using OpenResty and as we said about a month ago, it's been a great experience on which we plan to blog. We also plan to release some parts as open source when we clean things up a bit :)

We just released a sample openresty configuration here:

https://github.com/sharepad/openresty.conf

Our main server is currently running ngx_openresty/1.4.2.5 (we'll update to .8).

And it crashed twice... Not during tests or "normal runtime", but when a redditer writes: "Oooops. Think I crashed it :)"

Unless it's a bug in our Lua application (which shouldn't halt the server anyway), any ideas on what could cause intentional (or not) remote crashes?

There is nothing special in the few things we log (most being disabled).

Network traffic was low, as well as both CPU and RAM.

Thanks,

Ida

agentzh

Hello!

On Wed, Sep 25, 2013 at 12:12 PM,  sharepadco wrote:
> Our main server is currently running ngx_openresty/1.4.2.5 (we'll update to
> .8).
> And it crashed twice... Not during tests or "normal runtime", but when a
> redditer writes: "Oooops. Think I crashed it :)"
>

Thank you for the report! Please provide a full backtrace for the
crash. You can enable core dump for your online processes and obtain a
backtrace in gdb via the "bt full" command from the core dump file.
See the following document for more details:

    http://wiki.nginx.org/Debugging#Core_dump

Without seeing at what location it crashes, there's very little we can
do on our side :)

> Unless it's a bug in our Lua application (which shouldn't halt the server
> anyway),

If your Lua code is leaking or you've used any 3rd-party buggy Lua C
libraries, then it's possible to crash the server processes anyway.
But we need more details on the crash itself to be sure :)

Best regards,
-agentzh