Opened 3 weeks ago

Last modified 3 weeks ago

#2017 new defect

worker_connections are not enough

Reported by: win-t@… Owned by:
Priority: minor Milestone:
Component: nginx-core Version: 1.19.x
Keywords: Cc:
uname -a: Linux efd52cfb95f5 4.19.123-coreos #1 SMP Fri May 22 19:21:11 -00 2020 x86_64 Linux
nginx -V: nginx version: nginx/1.19.1
built by gcc 9.2.0 (Alpine 9.2.0)
built with OpenSSL 1.1.1d 10 Sep 2019 (running with OpenSSL 1.1.1g 21 Apr 2020)
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --with-perl_modules_path=/usr/lib/perl5/vendor_perl --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-Os -fomit-frame-pointer' --with-ld-opt=-Wl,--as-needed

Description

after update to v1.19.1 (nginx from official docker image), I got many errors about worker_connections are not enough, I try to increase the number to 20480:

2020/07/11 13:20:05 [alert] 20#20: 20480 worker_connections are not enough
2020/07/11 13:20:05 [alert] 20#20: 20480 worker_connections are not enough
2020/07/11 13:20:05 [alert] 20#20: 20480 worker_connections are not enough
2020/07/11 13:20:05 [alert] 20#20: 20480 worker_connections are not enough
2020/07/11 13:20:06 [alert] 20#20: 20480 worker_connections are not enough
2020/07/11 13:20:06 [alert] 20#20: 20480 worker_connections are not enough
2020/07/11 13:20:06 [alert] 20#20: 20480 worker_connections are not enough

I suspect because of the new change in v1.19.1:

Change: the "lingering_close", "lingering_time", and "lingering_timeout" directives now work when using HTTP/2.

Please investigate

Thanks

Change History (4)

comment:1 by win-t@…, 3 weeks ago

I'm pretty sure that is not because of ulimit problem

comment:2 by win-t@…, 3 weeks ago

Downgraing to v1.19.0 solve the issue

Btw, this issue commponent is not "Documentation", but I can't change it

comment:3 by Sergey Kandaurov, 3 weeks ago

Component: documentationnginx-core

comment:4 by Ruslan Ermilov, 3 weeks ago

Has the number of these alerts increased significantly after upgrading to 1.19.1, or these alerts are completely new?

If you use HTTP/2, does decreasing lingering_timeout or disabling lingering_close for HTTP/2 server help?

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