Lua tcp socket read timed out

kushal.khatri · 2016-08-04T01:50:50+00:00

Hello! On Thu, Dec 19, 2013 at 7:18 AM, Ron Schwartz wrote: > I've have some more information on this problem. > I'm using apache banch (ab) for load...

Lua tcp socket read timed out

kushal.khatri

We see a lot of these errors in our nginx log file. Once in a while, the nginx server starts choking and stops serving the incoming request. We have to restart nginx servers to get them back live.

*41417426420 lua tcp socket read timed out

*41417426420 attempt to send data on a closed socket: u:0000000040267D38, c:0000000000000000, ft:0 eof:0

We have a redis connection in the code but i dont see any line number in the error so i doubt if it has something to do with redis. Thoughts?

Thanks

rpaprocki

Hi,

On Wed, Aug 3, 2016 at 10:50 AM, kushal khatri <kushal...@gmail.com> wrote:

We see a lot of these errors in our nginx log file. Once in a while, the nginx server starts choking and stops serving the incoming request. We have to restart nginx servers to get them back live.
*41417426420 lua tcp socket read timed out
*41417426420 attempt to send data on a closed socket: u:0000000040267D38, c:0000000000000000, ft:0 eof:0
We have a redis connection in the code but i dont see any line number in the error so i doubt if it has something to do with redis. Thoughts?Thanks

It sounds youre not wrapping your redis calls to handle errors? Normally you'd want to do something like (as the example shows):

                local res, err = red:get("dog")
                if not res then
                    ngx.say("failed to get dog: ", err)
                    return
                end

That way you can track where connections are failing. If you continue to have problems, posting a minimal, reproducible example will help so we can better understand your situation.