nginx stopping abruptly at fix time (2:00 am) repeatedly on Cent OS 7.2

[B.R.]

You did not provide any server block configuration. The configuration
snippet you provided is incomplete.

Old tickets suggest a link to SPDY, then HTTP/2 options:
https://trac.nginx.org/nginx/ticket/626.
You might want to reproduce the problem on a configuration as minimalist as
possible, using the latest version of your branch (v1.10.3 atm).
---
*B. R.*

On Mon, Feb 27, 2017 at 7:28 AM, omkar_jadhav_20 <
nginx-forum at forum.nginx.org> wrote:

> Hi ,
>
> Please note that we are using nginx v 1.10.2 and on one of our webserver
> (centos 7.2) we are observing below error and sudden stopping of nginx
> service repeatedly at fix time i.e. at 2:00 am. Below are error lines for
> your reference :
>
> 2017/02/26 02:00:01 [alert] 57550#57550: *131331605 open socket #97 left in
> connection 453
> 2017/02/26 02:00:01 [alert] 57550#57550: *131334225 open socket #126 left
> in
> connection 510
> 2017/02/26 02:00:01 [alert] 57550#57550: *131334479 open socket #160 left
> in
> connection 532
> 2017/02/26 02:00:01 [alert] 57550#57550: *131334797 open socket #121 left
> in
> connection 542
> 2017/02/26 02:00:01 [alert] 57550#57550: *131334478 open socket #159 left
> in
> connection 552
> 2017/02/26 02:00:01 [alert] 57550#57550: *131334802 open socket #194 left
> in
> connection 633
> 2017/02/26 02:00:01 [alert] 57570#57570: aborting
> 2017/02/26 02:00:01 [alert] 57553#57553: aborting
> 2017/02/26 02:00:01 [alert] 57539#57539: aborting
> 2017/02/26 02:00:01 [alert] 57550#57550: aborting
>
> Also find below nginx conf files for your reference :
>
> worker_processes  auto;
> events {
>  worker_connections  4096;
>  use epoll;
>  multi_accept on;
> }
> worker_rlimit_nofile   100001;
>
> http {
>  include       mime.types;
>  default_type  video/mp4;
>  proxy_buffering           on;
>  proxy_buffer_size         4096k;
>  proxy_buffers             5 4096k;
>  sendfile                  on;
>  keepalive_timeout         30;
>  tcp_nodelay               on;
>  tcp_nopush               on;
>  reset_timedout_connection on;
>  gzip                      off;
>  server_tokens          off;
> log_format access '$remote_addr $http_x_forwarded_for $host [$time_local] '
> '$upstream_cache_status ' '"$request" $status $body_bytes_sent '
> '"$http_referer" "$http_user_agent" $request_time'
>
> Also note that we have similar servers with exact same nginx config running
> but those servers are not giving any such errors. Also we are not running
> any script or cron at this point of time.
> Kindly help us to resolve this issue.  Also let me know in case any other
> details are required from my end.
>
> Posted at Nginx Forum: https://forum.nginx.org/read.
> php?2,272633,272633#msg-272633
>
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>
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