#1003 closed defect (fixed)
Growing amount of active connections with http/2
| Reported by: | Matthias Baur | Owned by: | |
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| Priority: | minor | Milestone: | |
| Component: | nginx-core | Version: | 1.9.x |
| Keywords: | http2 | Cc: | |
| uname -a: | Linux dummy.hostname.de 2.6.32-042stab104.1 #1 SMP Thu Sep 17 11:38:20 MSK 2015 x86_64 Intel(R) Xeon(R) CPU E5620 @ 2.40GHz GenuineIntel GNU/Linux | ||
| nginx -V: |
nginx version: nginx/1.9.12
built with OpenSSL 1.0.2f 28 Jan 2016 (running with OpenSSL 1.0.2h 3 May 2016) TLS SNI support enabled configure arguments: --prefix=/usr --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error_log --pid-path=/run/nginx.pid --lock-path=/run/lock/nginx.lock --with-cc-opt=-I/usr/include --with-ld-opt=-L/usr/lib64 --http-log-path=/var/log/nginx/access_log --http-client-body-temp-path=/var/lib/nginx/tmp/client --http-proxy-temp-path=/var/lib/nginx/tmp/proxy --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --http-scgi-temp-path=/var/lib/nginx/tmp/scgi --http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi --with-http_v2_module --with-ipv6 --with-pcre --with-http_geoip_module --with-http_realip_module --with-http_stub_status_module --with-http_realip_module --add-module=external_module/ngx_cache_purge-2.3 --with-http_ssl_module --without-stream_upstream_hash_module --without-stream_upstream_least_conn_module --without-stream_upstream_zone_module --without-stream_upstream_hash_module --without-stream_upstream_least_conn_module --without-stream_upstream_zone_module --without-stream_upstream_hash_module --without-stream_upstream_least_conn_module --without-stream_upstream_zone_module --without-mail_imap_module --without-mail_pop3_module --without-mail_smtp_module --user='nginx --group=nginx' |
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Description
We're running a couple of Nginx HTTP load balancer. Since upgrading to 1.9.x/1.11.x and enabling http/2, we're seeing a growing amount of active connections.
Some plattform details:
- Nginx runs in a Virtuozzo container
- Guest system is Gentoo or Ubuntu 14.04
- Nginx version we're seeing this problem:
- 1.9.12
- 1.0.15
- 1.10.0
- 1.11.1
All of them have in common, that the problem appeared after enabling http/2.
Attachments (6)
Change History (10)
by , 8 years ago
| Attachment: | Bildschirmfoto 2016-06-22 um 14.40.28.png added |
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by , 8 years ago
| Attachment: | Bildschirmfoto 2016-06-22 um 14.41.40.png added |
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Screenshot 2 - Monitoring System
by , 8 years ago
| Attachment: | Bildschirmfoto 2016-06-22 um 14.42.28.png added |
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Screenshot 3 - Monitoring System
by , 8 years ago
| Attachment: | Bildschirmfoto 2016-06-22 um 14.43.12.png added |
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Screenshot 4 - Monitoring System
by , 8 years ago
| Attachment: | http2_socket_leak.patch added |
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comment:2 by , 8 years ago
This problem is likely similar to one that has been already discussed and resolved in the mailing-list:
http://mailman.nginx.org/pipermail/nginx/2016-June/051021.html
I've attached above the current version of patch to fix the issue. Please try it and let me know if it helps in your case.
comment:3 by , 8 years ago
| Resolution: | → fixed |
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| Status: | new → closed |
I suppose it to be fixed by e78eca6bfaf0, b5d1c17181ca, and 72282dd5884e in nginx 1.11.3.
comment:4 by , 8 years ago
I can confirm that this appears to be resolved - which I'm very happy about, as for a year it had caused nginx to overflow its disk allocation by blocking eviction, and ultimately exhausted disk space.
by , 8 years ago
| Attachment: | nginx_status-pinpoint=1469078442,1469769642.png added |
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Nginx connection graph before and after 1.11.3
Screenshot 1 - Monitoring System