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• Normalize Accept-Encoding via HAProxy for optimized Squid hit rate

  - by Matt Beckman

  Our website infrastructure uses HAProxy for load balancing, a Squid cluster for caching, and application data is on an IIS cluster. We load balance HAProxy by URI to optimize the Squid hit-rate, but we know that Squid is holding different copies of each page based on the Accept-Encoding header passed to it by the browser, and so IE (gzip, deflate) will have a different copy of a cached page than Firefox (gzip,deflate) or Chrome (gzip,deflate,sdch). We want to normalize the Accept-Encoding headers and I think the best place to do so would be in HAProxy. I'd appreciate it if someone could offer some ideas on how to accomplish this without breaking support for clients without gzip or deflate support.

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• IIS Redirect a sub directory to an external URL

  - by Will Hancock

  Hi forgive my ignorance for I am a humble client side developer... I am a webapp made up of static HTML and JS. But I want to call an external service via AJAX, this causes some issues with CORS or Cross Domain policy on the browser. So I need to make a request to MY server http://dev.webapp.com/service So I want to redirect the /service on the server to http://externaldata.com/service And return the result. The Mac boys have acheived this in Apache with a proxy pass: ProxyPass /service http://externaldata.com/service Can anybody help with how to do this in IIS? I have found articles about ARRs and Reverse Proxy, terms that are alien and seem too complicated. As a humble webdev can I do this using IIS GUI?

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• How to stop mouse "pausing".

  - by Xavierjazz

  My Microsoft mouse recently stopped working, so I purchased an AOpen O-35G, plug and play. No software came with it and I was advised to "just plug it in". I did this, and it worked, although some of the more advanced features do not work. My problem is that now the mouse cursor hesitates occasionally, and then over shoots the target I selected. This never happened before. It seems to happen when I am using the mouse and a browser window reloads. Does anyone know how to change this? It is very annoying. XP Pro SP3 Thanks. EDIT: It is not a problem of dust or a hair. I have contacted the Manufacturere and they are not responding. I have the mouse attached to my computer via a powered USB hub. I am going to try plugging it in directly to see if that makes a difference.

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• How to take advantage of two Internet connections (WiFi / Wired)?

  - by Madhur Ahuja

  I have two separate internet connections, one through WiFi and other Wired. However, generally I have observed that Windows try to use only one ( mostly faster one/ Or Wired by preference - I am not sure). Is there a way I can take advantage of having both ? For example I can have my web browser use the wired one and my torrent software use the Wifi One. PS: This question may be regarded as duplicate but reason I am posting it again is I have not found any concrete answer for it. Two internet Connections, one LAN - how to share?

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• cant access site intermittent as i get site not available

  - by user61438

  i have a news site i check stuff for regularly.. once in a while i cant access it completely from my 5 different browsers and even from the command line, nslookup cant resolve, ping and tracert fails.. all not being able to resolve site name..the problem is specific to this.. i am told by the site support person that problem is that its cache on my machine or on ISP and I say thats not true because this site I access it 1-2-3 times a week from one browser only.. i only fire up the other ones in times of trouble..and when i have the problem even if i try on my secondary machines i still get the same problems.. when problem goes away all works well.... question is whats causing the intermittent dns/http problems... i don't believe this is something to do with my machine because probe disappears without me having done anything at all.

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• Redirect To Domain Before SSL Is Read

  - by Devin Dixon

  I had to switch servers and I want to redirect all SSL urls to the non-ssl site. The problem I am running into is the https site still throws invalid certificate error even through apache has the redirect implemented. <VirtualHost *:443> ServerAdmin [email protected] DocumentRoot /data/sites/www.example.com/main/ RewriteEngine on Redirect 301 / http://www.example.com SSLEngine on SSLCertificateFile /etc/httpd/ssl/www.examplecom/ssl-cert-snakeoil.pem SSLCertificateKeyFile /etc/httpd/ssl/www.example.com/ssl-cert-snakeoil.key ServerName www.example.com ErrorLog "logs/example.com-error_log" CustomLog "logs/example.com-access_log" common </VirtualHost> My question is, how can I do a redirect and avoid the invalid ssl certifcation error in the browser?

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• Windows 7 can ping but can't see device on other subnet

  - by user192702

  I have 2 Windows 7 on 2 different subnets but 1 of them is unable to reach a NAS. The topology is as follow. Any idea why this is the case? Is there some Windows settings I need to apply? Subnet 1 - PC 1 - NAS Subnet 2 - PC 2 PC 1 is able to do the following: - Load the admin page on the browser. - Show the NAS under Windows Explorer - Network. - Access the NAS when typed in \\ in Windows Explorer. PC 2 is unable to do any of the above 3. It can however ping the NAS and get a response.

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• Installing SSL certs with nginx on Amazon EC2

  - by Ethan

  I finally got a cert from an authority and am struggling to get things working. I've created the appropriate combined certificate (personal + intermediate + root) and nginx is pointing to it. I got an elastic IP and connected it to my EC2 instance. My DNS records point to that IP. But when I point the browser to the hostname, I get the standard "Connection Untrusted" bit, with ssl_error_bad_cert_domain. Port 443 is open - I can get to the site over https if I ignore the warning. Weird thing is, under technical details, it lists the domain I tried to access as valid! When I try and diagnose with ssl testing sites, they don't even detect a certificate! What am I missing here? domain is yanlj.coinculture.info. Note I've got coinculture.info running on a home server without a dedicated IP and have the same problem, but I'll be moving that to the same EC2 instance as soon as I figure this thing out. I thought the elastic IP would solve things but it hasn't

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• use yum behind a proxy on CentOS 5.6

  - by ewok

  I have a CentOS VM running in Virtualbox on a Windows 7 host (all 64-bit). I have configured the proxy in the System menu and have added the proxy=http://my.proxy.com:12345 line to my /etc/yum.conf file. I am able to connect to the internet from a browser, and I can update packages form the update manager and install them from the package manager. However, I cannot use yum for anything. When I attempt to use yum (install, update, upgrade, or anything else), It attempts to connect to the mirrors, does nothing, then after a minute or so, quits. Does anyone know how to configure yum to work behind a proxy?

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• Curl authentication

  - by Jack Humphries

  I am trying to download a file with cURL from a password protected directory on my site. It is not working. Instead of the downloading the requested file, it downloads a HTML file that says, "Authentication Required!" I'm not sure what the problem is. I've tried both of these (with the same result). The username and password are correct (and if the link below is used in a web browser, the file downloads successfully). 1) The username and password are included as part of the URL. curl https://username:[email protected]/auth/file.dmg --O /file.dmg; 2) The username and password are included as an option. curl -u username:wordpass.1 https://www.example.com/auth/file.dmg --O /file.dmg;

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• Windows global shortcut hijacked by Opera

  - by Balint

  I have Chrome 37 installed as my main browser. Recently I needed to test a design in a new, Chromium based Opera version 21.0.1432.67. This later one hijacked my global shortcuts somehow, so if I press Ctrl+Shift+N to start a new session for testing, even if Chrome is running, and it is the active window, the shortcut starts a new Opera tab - even if the program is not running. It is highly annoying. Even if I uninstall Opera, I'm unable to use the aforementioned shortcut, because it will not work at all. Any hints on how to restore the original shortcut?

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• How to prevent mod_cluster as single point failure?

  - by Hitesh

  In my configuration i used Apche+mod_cluster as a front_end(load balancer) server and two JBOSS AS 7.1.0 as backend server. In my configuration on one system i have install Apache+mod_cluster + JBOSS AS 7.1.0 and on other system JBOSS AS 7.1.0. Both JBOSS AS 7.1.0 are in domain mode means in clustering. My problem is that if Apche+mod_cluster crash than client can not access any JBOSS AS . I want to configure Apache+mod_cluster in Master_Slave format, means if one of Apache+mod_cluter down another Apache+mod_cluster become active and pass client(browser) request to back-end server in normal form without any interruption. Is there any way to make two Apache+mod_cluster to communicate with each other , means to check health status of each other and if any one get down other Apche+mod_cluster will do it's task ......

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• Chrome and Firefox freeze when I begin typing

  - by mschulze

  Last night, chrome began freezing whenever I tried to type anything. After a fresh reinstall the problem went away but it is back again this morning. I installed Firefox as a substitute browser but it has the same problem. I cannot even get past the homepage because typing in the u r l bar freezes both programs. Last night internet explorer froze once too, but it has not happened since. Disabling shock-wave does not have any affect on the problem. Because it is happening across multiple browsers, I do not believe it to be caused by any extensions I have installed on Chrome. I also tried running Chrome as a new user and the problem still occurred. I can open any apps or web sites that are on my homepage, but as soon as I try to type anything the program freezes. Any ideas?

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• Which window manager do you use?

  - by Stephan202

  Combining "What is your default web browser?" and "What are the differences between Linux Window Managers", I ask you: which window manager do you use, and why? Myself I prefer a minimal window manager on the one hand (in the past I used Fluxbox), but on the other hand wish to go with the main stream, to ease finding (Googling) solutions in case of problems. Hence I stick with Gnome as it is shipped with Ubuntu. Why do you use the window manager which you use? I understand some reasons may be subjective, but please try to cite technical reasons where possible.

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• How to read ebooks in continuous scrolling mode and save highlights?

  - by Peter Salazar

  I'm looking for a way to manage my academic workflow for reading e-books in .epub or .mobi formats on OSX. My requirements: - continuous scrolling mode - ability to highlight text (e.g. in yellow, using a single keyboard shortcut) - ideally, the ability to make annotations as well Amazon Kindle reader for OSX offers annotating, but not continuous scrolling mode. Calibre offers continuous scrolling mode, but does not allow highlighting or annotating. Is there a solution that will allow me to do this? I'm also open to workarounds, e.g. using Calibre to convert to HTML, then reading the book in a browser---but I would still need the ability to highlight using a single keystroke.

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• Is there a difference between starting a WebLogic Admin Server through the command-line or through t

  - by lindelof

  I have WebLogic 11g installed on my machine under /srv/wls, and I start Node manager on it with /srv/wls/wlserver_10.3/server/bin/startNodeManager.sh. I create my domain with config.sh, and then I want to start the Admin Server of that domain with Node Manager. So I open a WLST session and do the following: > nmConnect(...) > nmStart('AdminServer') But when I then visit localhost:7001/console, and login, the screen on the browser remains blank and the server logs tell me the server has run out of PermGen space. I don't encounter this problem when starting the Admin Server through the shell script under $DOMAIN/startWebLogic.sh. Then it works fine. Any idea what I am doing wrong? I couldn't find anything in Google nor on the Oracle forums...

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• Slow Web Performance on two Windows 2008 R2 Terminal Servers

  - by Frank Owen

  We have two Windows 2008 R2 servers that we use for agents to log into to access our customers systems. Saturday morning we received complaints that on both servers the web is running horribly slow. This happens on all websites and the majority of the time the web site times out trying to load. Other users located at the same site but using their desktop machine do not see any issue. We have rebooted the boxes and checked settings and cannot find the cause. The CPU/Memory/Network/Disk Space use on the server is very low. I thought it might have been a MS update causing the issue but it appears the last update was applied in January. We have rebooted both boxes and I am in process of trying a different browser. Any ideas what could be causing this?

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• Disable static content caching in IIS 7

  - by Lee Richardson

  I'm a developer having what should be a relatively simple problem in IIS 7 on Windows Server 2008 R2. The problem is that IIS 7 is overzealously caching all static content on the server. It's caching all .html and .js content and not noticing when the content changes on disk unless I iisreset. I've tried the following: Deleting the local cache in my browser (I'm 99% positive this is a server caching issue) In IIS Admin in OutputCaching adding an .html extension and unchecking "User mode caching" and unchecking "Kernel-mode caching" In IIS Admin in OutputCaching adding an .html extension and checking "User mode caching" and selecting the radio for "Prevent all caching" In IIS Admin editing Output Cache Feature settings and unchecking "Enable cache" and "Enable kernel cache under OutputCaching. Running "C:\Windows\System32\inetsrv\config\appcmd set config "SharePoint - 80" -section: system.webServer/caching -enabled:false" Looking through applicationHost.config and disabling anything related to caching I could find. Nothing seems to work. I'm getting very frustrated. Can anyone please help?

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• Use cURL with multiple POSTs

  - by Austin

  I'm trying to use cURL to download the contents of webpages that require forms to get to. In a browser it looks something like this 1.) Login using POST 2.) Pick which page to go to using another POST 3.) Pick another page... using POST 4.) etc.. until I get to the page I want, then download all textfiles linked to on that page. I am attempting to do this using a bash script and some loops with the values that change for each POST. My problem is how do I do multiple POSTs with cURL? Must there be cookies involved? FYI the website is http://metagenomics.nmpdr.org/ (MG-RAST).

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• Why are some PNGs open in Photoshop with Indexed Colors and no transparency?

  - by Daniel Beardsley

  Why are some 32 bit PNGs opened in Photoshop with Indexed Colors and no transparency? For instance, I grabbed a png icon file of the Stack Overflow logo at: http://blog.stackoverflow.com/wp-content/uploads/icon-so.png When opening it in Photoshop CS3, it apparently treats it as indexed color and gets rid of the alpha channel. The image on the right is a screen grab of the icon. Changing the Image mode in Photoshop to RGB doesn't change the image at all. I've tried this with a few other PNGs and it seems hit or miss. When viewed in other programs, it displays fine. left:png opened in Photoshop, right:screen grab of png from browser What gives?, does Photoshop not interpret the PNG file format correctly?

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• Domain name is forwarding to my localhost, no idea why

  - by Dustin Fineout

  On my local development machine, I have a WAMP setup (Windows Vista Home Premium, Apache 2, MySQL and PHP 5). One of my projects is rehash.dustinfineout.com, which may be related to the problem... For some reason, when I try to visit http://www.rehash.com in a browser, it forwards automatically to 127.0.0.1 loopback/localhost. I discovered this entirely accidentally. I have already looked at the http.conf and extra/httpd-vhosts.conf Apache configuration files and these are not causing it. I also checked the windows hosts file but that had no entries in it either (C:/WINDOWS/System32/drivers/etc/hosts - maybe there is another location I need to check). Any ideas? Just to clarify, rehash.com is NOT my domain.

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• Why is group write permission ignored in Ubuntu?

  - by NorthPole

  I want my user to have full access to the local Apache root folder, and I also want the Apache user to have full access to the same folder. What I did was create a new group called DevGroup and I added my user and www-data there. Also I changed the permissions to 770 to allow full group access. But now it won't allow me or the Apache user any kind of access to the folder. Here is what I get with ls: drwxrwx--- 12 root DevGroup 4096 Sep 27 17:34 testFolder Which seems perfect but when I try as a user to access the file I get this: var/www$ ls testFolder/ ls: cannot open directory testFolder/: Permission denied Also when I try to access a page in the folder from a browser: [Thu Sep 27 17:47:16 2012] [error] [client 127.0.0.1] PHP Fatal error: Unknown: Failed opening required '/var/www/testFolder/foo.php' (include_path='.:/usr/share/php:/usr/share/pear') in Unknown on line 0 What's the problem and how can I fix it?

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• Browsing not working in Windows 8

  - by Jonathan Perry

  I'm using Windows 8 Professional installed on Windows 7 using the "Save my preferences and apps" installation option. The Windows works great, apps are downloading and I can listen to online radio stations using the TuneIn radio app meaning the internet connection is alive, however, when I open a browser (either Chrome or IE10) and try to browse the internet, I'm getting an "Unable to resolve DNS" error message. Prior to installing the internet browsing worked flawlessly I must say. I'm using ESET NOD32 Antivirus so I suspect that it might interfere with the web connection now, but I'm not so sure. Internet options show that the PC is set to resolve the DNS automatically. I don't know what to do. My other Win7 PCs in my wifi home network are connecting to the internet without any issues. If anyone can help me resolve this I'll be grateful :) Thanks

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• OS X "service" for running JavaScript bookmarklets in any app?

  - by Spiff

  I have some JavaScript bookmarklets that work on the selected text in a web page, but I'd like to be able to use them on the selected text in any Mac OS X app, not just browsers or things that provide browser-like views. Mac OS X has the "Services" (sub)menu where any app can publish services that it can provide to other apps, but I don't know how to make my bookmarklets show up as services there. Is there a way to make JavaScript bookmarklets show up as Mac OS X "Services", or otherwise execute JavaScript against the selected text in any Mac OS X app?

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• I'm running Ubuntu notebook on a USB drive with 1GB persistence. Where are my XAMPP files?

  - by CDeanMartin

  I just began running Ubuntu Notebook on my 2GB USB stick, with 1GB persistence. After I installed XAMPP, I rebooted to make sure the persistence was working. It worked! My XAMPP installation worked, and it comes up when I type localhost into the browser. The sample apps work, including the ones using MySQL. But I can't find the application files! I am used to the vast labyrinth of files in Windows Explorer, and looking through 'Files and Folders' in GNOME, there seem to only be 7 or 8 folders in the entire OS? What is really going on here? I looked through them all and where is XAMPP? When I code PHP with a WAMP stack, all the .php files go in the 'WWW folder' What is the Linux equivalent of the WWW folder?

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