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• Is it possible to load balance requests from a single source?

  - by Shawn

  In our application, Server A establishes a TCP connection with Server B, then it sends a large amount of requests to Server B over the TCP connection. The request message is XML-based. Server B needs to respond within a very short period, and it takes time to process the requests. So we hope a load balancer can be introduced and we can expedite the processing by using multiple Server B's. This is not a web application. I did some research but failed to find a similar application of load balancer. Can anyone tell me if there's a load balancer can help in our application?

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• Roundcube access from outside local network

  - by Mike K

  I have setup hmailserver on a windows xp pro computer and everything is working great when it comes to getting it to send and receive email. Now here is where my problem comes in... I have setup roundcube using uniserver and everything works great internally. Now, what I am trying to do is to be able to access roundcube from the internet outside of the local network. I have opened up ports 80, 443, and the mysql port yet I am still unable to access this from outside of the network. The error message that I am getting is as followed: Forbidden You don't have permission to access /webmail/ on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. I believe something needs to be edited in the apache config file. Any help would be greatly appreciated. I am hoping I dont need to run this on windows server but I'm kinda losing hope and thinking I will need to because I need IIS.

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• Why would the 'show processlist' command speed up normally slow requests to my remote DB? (connected via VPN)

  - by Hakan B.

  I am running a local Django development server that connects to a remote MySQL server via a VPN (IPSec). Request times are awfully slow and I consistently see timeouts. Attempting to diagnose the problem, I logged in to the remote database and ran: show full processlist Immediately, the local server went from idle to working. The page had not yet completely loaded, but progress had been made (debug logs confirm this). When I ran 'show full processlist' several times more in succession, the request completed quickly. I can currently reproduce this - unless I run 'show full processlist' over and over on the remote server, my local request usually times out. Does anyone have any idea why this would happen? I'm running Django 1.3 and OS X 10.7. Note: I realize this may be entirely not be a question with a clear-cut answer and is probably my fault, but it is odd and reproducable, so I hope someone can at least point me the right direction. Thanks in advance.

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• Free MP3 merge for Mac OS X

  - by Lilly

  Hi, I need to merge several MP3 tracks into one, I use Mac OS X 10.5. I want to convert all my Harry Potter CDs to my iPod, but not every minute a new track (as it is on the CDs) but chapterwise. Where can I get a free software? Help, please! (I've already tried: Jfuse, but after I had merged a few chapters it said I had to buy it; emicsoft VOB Converter for Mac; File Stitcher; but since they all were shareware, for free they would only let me merge 2 files at once (that would take me days) or half of each file which is useless of course; iTunes advanced settings ("join CD tracks") when importing the CDs, but it would let me only join the complete CD, not chapters...) (Sorry for my English, hope you could understand what I wanted to say)

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• Transferring a single wordpress site from shared account to vps

  - by N e w B e e

  I got a hosting account at Hostgator. it was a shared account and i had three websites present over there. Now, i have upgraded my account to VPS at Hostgator and i want to transfer only ONE website over the new VPS. say, mydom.net. this website includes wordpress installation and other custom pages and setup can somebody please guide me How can I transfer the web to my new account? with speed, accuracy, and such that my website remains in working condition.. what will I do about wordpress? simply copy it will work?(I dont thnk so), if not how can I move it? I need guideline. and I am asking the question with a hope that many others will also learn the things just as i am learning,, thanks to all, and I dont understand the right location to ask the question..sorry if i made somthing wrong...or I have asked it at some wrong place

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• Damaged XenServer Storage LVM partition table

  - by Fiolek

  I have a homeserver running under XenServer control with 3x1TB discs inside, one for XenServer and two mirrored(using Intel's fakeRAID and dmraid) for VMs and a user data(but now I think RAID didn't work). I tried to pass PCI card to VM using PCI-passthroug and I read somewhere that I need to recompile kernel with pciback module but something went wrong(I made mistake in /boot/extlinux.conf and server couldn't run) and I had to use LiveCD of GPartEd(I already had it on USB key) to correct this. But when I re-run the server all VDIs were gone. I have completly no idea what could go wrong. I tried to repair RAID using dmraid -R in the hope that everything will return to noramal but now I think this done more bad than good(and corrupted rest of LVM table...). Is there any possibility to recover this SR or only data from one(~100GB) of VDI? I also wants to apologise for my English, I'm not from English-speaking country and I'm only 16 years old, so I hadn't "time" to learn it(school isn't good place to do this) in sufficient way.

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• Retrieving an RSA key from a running instance of Apache?

  - by Nathan Osman

  I created an RSA keypair for an SSL certificate and stored the private key in /etc/ssl/private/server.key. Unfortunately this was the only copy of the private key that I had. Then I accidentally overwrote the file on disk (yes, I know). Apache is still running and still serving SSL requests, leading me to believe that there may be hope in recovering the private key. (Perhaps there is a symbolic link somewhere in /proc or something?) This server is running Ubuntu 12.04 LTS.

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• A desktop Wiki editor/viewer: is there anything out there?

  - by MrBertie

  I'm a big user of wikis, mainly Dokuwiki, I really like the clarity and ease of use of simple text files. However all good wikis seem to require a web-server of some kind; has anyone come across a good desktop wiki editor/viewer that work with plain-text files, and allow me to work with wiki text files just like any other document file type (note: not a desktop wiki running inside a local webserver) Before you rush to suggest (I hope!) I have done months of research on this and have tried Wixi, Wikidpad, zulupad.... Any ideas anyone?

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• Used HDD/ran DiskSmartView/40,000 Power-on-hours?? should i trust it w/ my data, or take it back and bitch?

  - by David Lindsay

  I just bought a used hard drive from a University Surplus Store. Decided to run DiskSmartView to make sure it wasn't ready to fail. 40,000 power-on-hours I don't know if I feel like trusting my data to something that used. I really dont know if thats unreasonably old, but when i compare it to the POH reading i get when testing my other hdds its more than 3x older (my others have 2110 hours, 6150 hours, etc.. It's a Western Digital, so that gives me a little bit of hope(WDC WD4000KD-00NAB0). I could sure use someone else's opinion here. Thanks, DAVE

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• 64bit or 32bit Linux system?

  - by Milan Babuškov

  I have a server that has 4GB of RAM. On it, I have installation of 32bit Slackware Linux 12.1. Of course, it is not using all of 4GB of RAM. I'd soon like to increase the RAM to 8GB, and am looking for a way for the system to use it. The system is used as a database server and is under high load during the day. AFAICT, I have two options: stay with 32bit and rebuild the kernel and lose some performance. Or go with 64bit and reinstall everything. Looking at 64bit versions of Slackware, I could run -current or Slamd64. Now, on to the questions: Should I stay with 32bit or go with 64bit? If I go 64bit, should I use -current or Slamd64? P.S. I hope to get answers from someone actually using any of these configurations in production, not just copy/paste something I could find myself via Google.

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• Ubuntu boots into command line instead of X.

  - by Ethan Turkeltaub

  I posted this on the Ubuntu forums and they had no good answer. I hope you guys have a solution! On my relatively new install, it's booting into command line instead of X--again. This is the reason I reinstalled in the first place. This has happened to me three times now. So, I boot up and it gets past GRUB, past the glowing Ubuntu option, then it prompts me for my username, then password. I run: startx And that starts the GUI for about a minute, then it runs the GUI login system. To add to the mess, the network-applet is not shown in the panel. Additionally, Chrome will not launch (I ran Firefox from the terminal). What's the problem here?

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• How to replicate windows server 2008?

  - by Sem Dendoncker

  Hello, We have 2 servers let's call them server A and server B. Server B is never used unless something goes wrong with server A. I need a system that can replicate server A to server B but this doesn't have to be continues. This only has to be done once every day (let's say at 1 am or so). Also, it's not necessary to automatically take over the server, this can be done manually. On this server IIS is running and sql 2008 so all webapplications and databases must be synced/replicated. What tools can I use? I hope someone can help me with this. Cheers, Sem

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• PowerConnect 2848 , vlan configuration with AP

  - by Francesco

  I need to configure two vlan on an AP connected with a Dell PowerConnect 2848. The first one is up and running (let's say vlan x) , the second one is a completely different network (vlan y) , provided by a Gateway-DHCP wich i have no access, directely Patched (via patch panel) at a secondo AP device. So i cannot just plug this Gateway device on my switch without tagging traffic before, for DHCP collion . I have to solve this problem. I was thinking about tagging the traffic at the port wich I will connect the gateway device with vlan y and then set as trunk (vlanx+y) the AP port. In this way I hope to limit the vlan y traffic ONLY for the ports I selected avoiding the spread of unwanted dhcp calls. But all other ports are Unassigned , so I am not sure they won't forward dhcp (vlan y) traffic. I cannot change the Unassigned state for the vlan x ports cause vlanx is native.

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• Search files for text matching format of a Unix directory

  - by BrandonKowalski

  I am attempting to search through all the files in a directory for text matching the pattern of any arbitrary directory. The output of this I hope to use to make a list of all directories referenced in the files (this part I think I can figure out on my own). I have looked at various regex resources and made my own expression that seems to work in the browser based tool but not with grep in the command line. /\w+[(/\w+)]+ My understanding so far is the above expression will look for the beginning / of a directory then look for an indeterminate number of characters before looking for a repeating block of the same thing. Any guidance would be greatly appreciated.

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• Free mp3 merge for Mac OSX

  - by Lilly

  Hi, I need to merge several mp3 tracks into one, I use MAC OS X 10.5. I want to convert all my Harry Potter CDs to my iPod, but not every minute a new track (as it is on the CDs) but chapterwise. Where can I get a free software? Help, please! (I've already tried: Jfuse, but after I had merged a few chapters it said I had to buy it; emicsoft VOB Converter for MAC; File Stitcher; but since they all were shareware, for free they would only let me merge 2 files at once (that would take me days) or half of each file which is useless of course; iTunes advanced settings ("join CD tracks") when importing the CDs, but it would let me only join the complete CD, not chapters...) (Sorry for my English, hope you could understand what I wanted to say)

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• One external IP 2 servers

  - by Stanley

  Currently there is one external IP pointing to a Window Web Server. Now wish to add a Linux web server. Wish to know if the following setup is ok : 119.xxx.xxx.xxx points to Window Web Server 119.xxx.xxx.xxx/Linux_Server points to the new additional Linux Server. If the above scheme is ok, then how should it be done. (In terms of where the router should be placed and configured etc). If the above scheme is unusual or not workable please suggest best practice scheme. Hope somebody knowledgable could help ...

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• What are the common Control combinations in a terminal setting

  - by Hamish Downer

  I would like to have a good guide to the common Control key combinations in use in bash (and similar) shells and the combinations used by common programs in use in those shells. My particular motivation is to be able to run GNU screen on one computer, ssh to a second computer and use screen and irssi on that computer. So I need to use something other than Ctrl-A to control one of the screen sessions. So I need to know what are Control key combinations are safe to use. But I imagine this list would be useful for others who want to bind custom actions to Control key combinations. I reckon we'd be best to group the Control key combinations by application (eg. bash itself, screen, vim, emacs), to make it easy to spot the applications you use or can ignore. So please one application per answer - hope that works.

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• Fedora12, XP and connection sharing via iptables

  - by Paul L

  Just a quick question ( I Hope ) To find out if what I'm trying is even possible. I am trying to share internet connection with Fedora12 as default gateway and XP machine hooked up via NIC using iptables commands as shown in Mark Sobell's book 'A Practical Guide To Fedora And Red Hat Enterprise Linux' These are the commands as placed in /etc/rc.local iptables -A FORWARD -i eth1 -o eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT iptables -A FORWARD -j LOG iptables -t NAT -A POSTROUTING -o eth1 -j MASQUERADE I did flip the in and out parameters to match my NIC configuration ( as opposed to example from book ) but other than that followed example. One thing to note is that Sobell did not mention whether this should work with mix of Linux and XP. One other note ( maybe meaningless ) is that I do have samba working between the two machines. Thanks for any insights anyone might have. PL

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• Performance problem with Win Server 2008 at vbox on Ubuntu 9.10 Server

  - by Diskilla

  Hey, i´ve got an Ubuntu 9.10 Server and tried to install Windows Server 2008 in a virtual machine. The Problem is, the Server has got 8 cores, but the virtual machine seems to have problems with that. The VM is very slow and not really usable if i set the VM-config to more than one core. Is it set to only one core everything works fine, but thats not a solution because I bought the Server with several cores for a reason... Does anybody know this problem or has got a solution? I feel like I read the entire internet via Google... no solution found. Greetz Diskilla P.S.: I´m from Germany and it´s kind of hard to ask in english :-) I hope I din´t make that much mistakes.

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• Can't set 1280x1024 on Ubuntu with Nvidia Geforce 8400 GS

  - by torbengb

  Ubuntu doesn't offer 1280x1024 but that's what my monitor has -- I want to set that resolution but need help doing so. Ubuntu offers 1360x768, 1152x864, 1024x768 when using the Nvidia driver version 180. This is Ubuntu 9.04 installed as "Wubi" through Windows, I believe it's the amd64 version. Google gave me this precise explanation which is complete latin to me; I'm a Windows guy and not familiar with Terminal. These SU questions also don't provide answers, hence this new question. I hope you can help, and I will provide additional info if required.

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• How to jump through an IP ad in firefox?

  - by chris

  I use firefox with a lot of anti-ad extension, like adblock, NoScript, Ghosty etc. I found this IP 220.191.158.69 always in the list of NoScript, I want to ban this IP. I have checked it, searched it. It is from China telecom damn Ad. I guess NoScript can ban this IP already, but When I do not allow that IP, sometimes a webpage can not be loaded at first time, I need to refresh two or more times. I hate it... So I hope there are some way or browser extensions or script can jump through this damn IP.

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• DFSR - What happens when one server gets maxed out?

  - by Jared

  What happens when one server in a DFSR pool maxes out its disk space? I am at the very beginning of my research in DFS/R and this struck me. I plan on implementing this on one server with RAID1 (160GB) and on another server with a RAID5 (500GB). What happens when my 1st server with 160GB disks, run out of space? Will it spill over to the 500GB server? Is it advisable at all to even have the RAID1 server in the DFSR pool? Because the RAID1 server is also my Domain Controller. Hope you guys can help me out here (OS are Win2k3R2)

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• Como instalar Windows (x86/x64) sobre Linux (Ubuntu)

  - by yorrany

  I installed Ubuntu edition (10.04) on my windows 7, completely eliminating it to the original installation. After I was forced to reverse the process, but could not find tools or explanations of how to do it. To clarify the equipment, it is: a netbook, acer, no optical drive cd / dvd, the process should be fully via USB. I hope I was clear enough, count on the support of you. Thank you. -- Instalei a edição Ubuntu (10.04) sobre meu Windows 7, eliminando completamente a a instalação original. Depois fui forçado à reverter o processo, mas não encontrei ferramentas ou explicações de como fazê-lo. Para esclarecer sobre o equipamento, trata-se de: um netbook, acer, sem leitor óptico de cd/dvd, o processo deverá ser totalmente via USB. Espero ter sido bastante claro, conto com o suporte de vocês. Muito obrigado.

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• RAID5 and different sizes of HDDs

  - by MyFlower

  Today I set up my first RAID ever. I decided to use RAID5, because I want as much space as possible, but I'm to afraid to use RAID0 because of possible data loss. I have 4 0,5TB drives and in RAID5 I have about 1,36TB usable. That's fine by me. Now I have a question. I'm thinking about purchasing a 2TB drive and can't figure out if it is possible to add it to this RAID (4*0,5TB + 1*2TB HDD) and how much space will I gain. I hope someone can answer me, it would help a lot! Thank you in advance.

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• Remap "next song" key in ubuntu to work with spotify and wine

  - by daniel-magnussons

  I want to change song in spotify with a global key in ubuntu. This is possible on windows with a special key on keyboard, the "next song key"(?) How can I remap a key in ubuntu(no "next song" button here) to work as "next song" button? like "ctrl +right key". And how would i do to make this work with spotify, which is running thru wine? Basically i want to know what the ascii code for "next song" button is, and how do i map it to a key combination under ubuntu. And hope it routes this command thru wine without problem. Edit: I don't have the "next song" button on the ubuntu machine.

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