2048 worker_connections are not enough while connecting to upstream
2048 worker_connections are not enough while connecting to upstream http://mailman.nginx.org/pipermail/nginx/2011-May/026706.html
2048 worker_connections are not enough while connecting to upstream
Maxim Dounin mdounin at mdounin.ru
Tue May 10 14:19:22 MSD 2011
- Previous message: 2048 worker_connections are not enough while connecting to upstream
- Next message: 2048 worker_connections are not enough while connecting to upstream
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Hello! On Tue, May 10, 2011 at 10:31:06AM +0100, John Moore wrote: > I'm using nginx as a remote proxy server in front of some Tomcat
> instances, with pretty high traffic. Suddenly yesterday afternoon we
> started getting the error in the message subject, one I'd never seen
> before, and it's occurred tens of thousands of times since. Now,
> I've upped the worker_connections count to a much higher figure and
> the problem has gone away for now. But I'm concerned that it might
> be indicative of something else - some kind of DOS attack, maybe?
> What does this signify and why might we suddenly start getting it?
> Thanks.
Without proper history graphs (use stub_status, Luke!) it's hard
to say if you are under attack or just your normal load reached
the bar (or your backend response time degraded and this resulted
in more connections used, or your network uplink has problems and
this caused more connections...). On the other hand, 2048 is pretty low, and easily reached even
without keepalive. Usual production values for "high traffic"
sites is over 9000. Please also note that using high worker_connections may also
require tuning of your OS to allow appropriate number of file
descriptors to be used. Maxim Dounin
2048 worker_connections are not enough while connecting to upstream的更多相关文章
- Nginx 日志 worker_connections are not enough while connecting to upstream
记一次,排查错误所遇到的问题,和学习到的内容. 上周五,刚上线的项目出现了503 ,查看日志发现如下内容: System.Exception: Request api/blogpost/zzkDocs ...
- [nginx] connect() failed (111: Connection refused) while connecting to upstream, client: 101.18.123.107, server: localhost,
nginx一直报错, 2016/12/02 10:23:19 [error] 1472#0: *31 connect() failed (111: Connection refused)while c ...
- connect() failed (111: Connection refused) while connecting to upstream
配置好lamp后,在浏览器中运行程序后,出现上面的错误. 转自:http://www.xuejiehome.com/blread-1828.html I'm experiencing 502 gate ...
- socket() failed (13: Permission denied) while connecting to upstream
/*************************************************************************** * socket() failed (13: ...
- 解决connect() failed (111: Connection refused) while connecting to upstream
使用nginx时, 有可能遇到connect() failed (111: Connection refused) while connecting to upstream的问题. 如果upstrea ...
- Centos 7 上使用nginx为Node.js配置反向代理时错误:(13: Permission denied) while connecting to upstream
错误来源:Centos 7 上使用nginx为Node.js配置反向代理时产生(13: Permission denied) while connecting to upstream的错误 nginx ...
- nginx访问502 gateway,*1 connect() failed (111: Connection refused) while connecting to upstream
安装好nginx,php环境后,配置虚拟主机,结果访问后就报502 gateway,查看日志文件后,显示错误如下: 2019/04/29 16:24:39 [error] 19433#19433: * ...
- nginx 报错 connect() failed (111: Connection refused) while connecting to upstream
公司网站搬迁到新服务器后,发现站点访问不了,network里面提示502,查看相关的server配置,感觉没有什么问题,经过测试发现txt.html.等非php文件能够直接访问,也就是php访问不了, ...
- 解决Nginx的13: Permission denied) while connecting to upstream
一.问题 做Nginx负载的时候,经常遇到这样的情况: // :: [crit] #: * connect() to failed (: Permission denied) while connec ...
随机推荐
- android logo设计
应用程序图标 (Icon)应当是一个 Alpha 通道透明的32位 PNG 图片.由于安卓设备众多,一个应用程序图标需要设计几种不同大小,如: LDPI (Low Density Screen,120 ...
- NSDate 问题
类型 比特数 有效数字 数值范围 float 32 6-7 -3.4*10(-38)-3.4*10(38) double 64 15-16 -1.7*10(-308)-1.7*10(308) long ...
- leetcode 解题报告 Word Ladder II
题目不多说了.见https://oj.leetcode.com/problems/word-ladder-ii/ 这一题我反复修改了两天半.尝试过各种思路,总是报TLE.终于知道这一题为什么是leet ...
- iOS 自定义转场动画浅谈
代码地址如下:http://www.demodashi.com/demo/11612.html 路漫漫其修远兮,吾将上下而求索 前记 想研究自定义转场动画很久了,时间就像海绵,挤一挤还是有的,花了差不 ...
- http://www.allegro-skill.com/thread-2506-1-1.html
http://www.allegro-skill.com/thread-2506-1-1.html
- Predix中模型设计
GE的Predix使用了图形数据库作为Asset存储,用以解决传统RDBMS系统中扩展性差,不支持行的动态定义问题. 对于实体,或者Asset来说,由如下几个方面表述: ID: Ties everyt ...
- TensorFlow学习笔记4——变量共享
因为最近在研究生成对抗网络GAN,在读别人的代码时发现了 with tf.variable_scope(self.name_scope_conv, reuse = reuse): 这样一条语句,查阅官 ...
- Atitit.单向sso 单点登录的设计与实现
Atitit.单向sso 单点登录的设计与实现 1. 单点登录sso 的三大解决方案1 2. 新方案:密码管理器方案1 3. 调用方1 4. 自动登录登录2 5. 主页跳转2 1. 单点登录sso ...
- android studio - 隐藏编辑器上面的导航条
菜单栏-“View”-"Navigation Bar"
- Creating Dialogbased Windows Application (2) / 创建基于对话框的Windows应用程序(二)Button的应用、新建子窗体 / VC++, Windows
创建基于对话框的Windows应用程序(二) —— Button的应用.新建子窗体 可以发现上一节创建的窗体中,点击OK和Cancel两个按钮是没有任何反应的.现在我们来为他们添加退出对话框的功能. ...