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Struct sockaddr was allocated without zeroing. As getsockname() does not
necessarily fill all the bytes, this left potentially uninitialized
memory, which caused me a weird failure in the on-the-fly upgrade
mechanism, where the new master failed to pair the config file AF_UNIX
sockets with the
24.09.2016 11:41, Mikanoshi пишет:
Alexey Kuznetsov Wrote:
---
Помогает или откат кернела на старую версию (достаточно самого
ядра и модулей) ИЛИ выключение "accf_http" (и модуль не загружен и в
конфиге соотв выключено, отключать только в
What I would say to do is write IP's from your toolkit or what ever you are
using for reading your access.log and those that trigger and spam the 503
error within milliseconds or what ever range it is you can do an API call
and add those IP's to be blocked at a router level.
With CloudFlare you
If you dig through some old posts, it was established that the deny feature of
nginx isn't very effective at limiting network activity. I deny at the
firewall.
What remains is if you should deny dynamically or statically.
Original Message
From: c0nw0nk
Sent: Tuesday, September 27, 2016
It is a response by the time the 444 is served it is to late a true DDoS is
not about what the server outputs its about what it can receive you can't
expect incoming traffic that amounts to 600Gbps to be prevented by a 1Gbps
port it does not work like that Nginx is an Application preventing any
Thanks Maxim
We enabled the upstream_request_time on both the server which shows response
time less than a sec for Upstream request.
It doesn't seems to be issue with Upstream Server .
Even for the request which are HIT response time on the server on which
"Writing" is more varies from 10 sec
Hello!
On Tue, Sep 27, 2016 at 01:09:41PM -0400, anish10dec wrote:
> We are having two Nginx Server acting as Caching Server behind haproxy
> loadbalancer. We are observing a high load on one of the server though we
> see equal number of requests coming on the server from application per sec.
>
Your reply does not agree with the documentation.
https://httpstatuses.com/444
Original Message
From: B.R.
Sent: Tuesday, September 27, 2016 10:09 AM
To: nginx ML
Reply To: nginx@nginx.org
Subject: Re: 444 return code and rate limiting
Responding 444 is... a response.
It is not anything
We are having two Nginx Server acting as Caching Server behind haproxy
loadbalancer. We are observing a high load on one of the server though we
see equal number of requests coming on the server from application per sec.
We see that out of two server on which load is high i.e around 5 , response
Responding 444 is... a response.
It is not anything else than a (non-standard, thus 'unknown', just like 499
nginx chose to illustrate client-side premature disconnection) HTTP status
code as any other.
Some speedup might come from using return instead of doing further
processing, but there is
I pulled this off the rate limiting thread since I think the 444 return is a
good topic all on its own.
"But under a DoS attack I always feel those values would be better being
"444" since the server won't respond and cut's the connection rather than
waste bandwidth on a client who is opening
Hello,
You just need fail2ban and no need to know Perl. But you'll probably need to
know regular expressions.
Fail2ban can be adapted to most log format, but nginx logs format is the
same as apache, so it's easy :-)
I'm sure you can find many tutorials to explain how to install and configure
it
Hello,
Not sure if it can help you, because only some bots respect it and not in
the same way, but you could look at the "crawl-delay" directive in the
robots.txt file:
https://en.wikipedia.org/wiki/Robots_exclusion_standard#Crawl-delay_directive
Posted at Nginx Forum:
I replaced openssl library with the newest one,1.0.1u, and then compiled and
make install the newest Nginx, why Nginx still run with old openssl?
Please Help!!
[root@10-4-28-10 modules]# /usr/sbin/nginx -V
nginx version: nginx/1.11.4
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-17) (GCC)
Perhaps this can help:
http://stackoverflow.com/questions/12022429/http-status-code-for-overloaded-server
Another option is a *429 - Too Many Requests* response.
Defined in RFC6585 - http://tools.ietf.org/html/rfc6585#section-4
The spec does not define how the origin server identifies the
General rule of thumb is set it as low as possible, as soon as 503's are
getting your users upset or resources are getting blocked, then double the
values, keep an eye on the logs, double it one more time when required,
done.
Posted at Nginx Forum:
On Mon, Sep 26, 2016 at 07:41:12PM -0400, c0nw0nk wrote:
Hi there,
> Whats a good setting that won't effect legitimate decent (I think I just
> committed a crime calling some of these companies decent?) crawlers like
> Google, Bing, Baidu, Yandex etc.
Look at your logs for traffic from Google,
Hi Mastercan,
As of now NGINX is supporting HTTP/2 Natively here is how to activate it.
https://atulhost.com/enable-http2-nginx
Posted at Nginx Forum:
https://forum.nginx.org/read.php?2,269749,269863#msg-269863
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