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• Preparing a hyper-v VM image

  - by Anteru

  We have a Hyper-V Windows Server 2k3, and we're hosting multiple VMs on it. However, right now, we always start the VM creation right on the server, i.e. when preparing a new Ubuntu image, I just install it into a new VM and set it up and when I'm happy we store the disk image. I wonder if there is a way to prepare a hyper-v image locally on my desktop machine instead? I'm running Windows 7, and I would love to be able to set up a VM so that we can copy the image over to the server and be done with it. This is for linux images only, and we definitely need the hyperv network integration. Is there a recommended way how to prepare hyperv images without running a hyperv instance somewhere?

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• Error sysprepping Windows 8 Enterprise 90-day trial

  - by Philip

  I am using the Windows 8 Enterprise 90-day trial to evaluate the latest version of Windows for a private school. The way I work is that I use sysprep to prepare an generalized image, then I clone it to the school's computers. When I follow the instructions and try sysprep on my installation of Windows 8 in VirtualBox, sysprep thinks briefly and gives me an error message: Fatal error occurred while trying to sysprep the machine. Once I acknowledge it, sysprep closes. I checked the Windows Event Log, and there's nothing there that I could see. I also followed some instructions to cure this problem, but nothing changed. The error remains. My best guess is that the 90-day trial prohibits the use of sysprep, but I can't be sure. It might also be my use of VirtualBox, or who-knows-what. Has anyone had success with this, or encountered the same issue on real hardware?

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• How come there is still so much programming work?

  - by jd_505

  First I'd like to say that I am not pretty sure that this question will meet the guidelines. I think it can goes under the "Freelancing and business concerns" bullet, but I am not sure. Anyway, I will give it a shot. I wonder how the programming jobs hasn't yet "dried" because of the software evolution, for example, I am a developer myself, which means that I do care about software (I mean I am not of the type of guys that needs a computer mainly to just browse the Internet), and still I wouldn't mind if I never receive any more updates on my Ubuntu machine. I find that it provides everything I need, and while the updates provide various bug fixes/improvements, I wouldn't mind using it with it's current state for the rest of my life, for 2 years of Ubuntu usage I have never bumped at a serious bug/problem. Another example is Windows, almost half of it's users still use XP, which is practically ancient, yet they find it satisfying all their needs (and I agreee with them). I could go with many more examples, but by now you are understanding my point and my question. While new "trends" appears all of the time (like a new mobile OS) which runs on new platforms and requires some fresh development work, still the majority of the software effort goes in to what I consider as "completed projects", or at least a state of a project which is enough to be considered as completed. Do you have an explanation ? I can't think of the right tags for this question, please edit it the way you find it to be most appropriate. Thanks.

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• Updating a modified Prestashop

  - by Emphram Stavanger

  I don't know if this is the proper forum for this; didn't really seem like a Stack Overflow question, so if I'm in the wrong here, do point me to the correct SE site. Anyway, I have a Prestashop 1.4.7.3 installed on a CentOS 5 machine. Recently, they released the 1.5.0 version, which I'd like to upgrade to. However, during developing a rather customized theme for it, I had to modify the core files (and yes I know how stupid this was, and probably even more stupid that I didn't keep a list of modified files). What's done is done though. So now I'm faced with a problem; I need to update, but I don't want it to overwrite my modifications. Is there a way (preferably in the console) to do a diff between my current installation and 1.4.7.3 vanilla, to get a list of files that are modified (sans the themes folder, perhaps)?

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• linux - Is Debian "lighter" than Ubuntu?

  - by user2983756

  I currently run Linux Mint 14 KDE on a "semi-old" machine I use for working and surfing the web - it was the first Linux system I ever used (running away from old Win XP), so I picked a complete system that would have most of my basic needs installed (I didn't even know what exactly all those needs were at the time). The thing is, my computer is becoming really old and Mint is a cluttered system, and for the next installation I'm going to try and install a "raw" system and get everything from the online repos. My question is: Since Ubuntu is Debian-based, does that make it consume more resources than its base system? If that isn't the difference, which one is "lighter" in that sense?

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• Running VMWare EXS(i) on Apple Xserve

  - by xzyfer

  So we're running VMWare Esx(i) (I'm not completely sure which as I'm out of the office) running on Windows Server 2008. However it turns out the machine we're running it on has serious hardware limitations, most importantly it's restricted to 4gb of ram. We've since inherited a much more powerful server. The problem being the new server is an Apple Xserver running, I believe, Snow Leopard Server. My question is, can I run VMWare Exs(i) on Xserver, or an equivalent? I'm done some hardcore Googling and the best that I can find is that it's not supported, but it might work, but there are no guarantees (this has been stated many times on the VMWare forums by the VMWare support staff). But all these search results are years old, so I can't find any recent answers regarding this. Has anyone accomplished this?

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• How to make ssh match known_hosts to host/ip:port instead of just host/ip?

  - by Prody

  I have two machines behind a firewall, with the ssh ports forwarded to 2201 and 2202. When I ssh host -p 2201 it asks if I trust the machine, I say yes, it gets added to ~/.ssh/known_hosts Then I ssh host -p 2202 it doesn't let me, because there's already a known_host for this IP in ~/.ssh/known_host:1 (the file was empty when I started, so line 1 is the one added by the previous ssh run) This happens on CentOS 5.4. On other distros (I've tried Arch), it appears that ssh matches the knwown_hosts to the ports too, so I can have multiple fingerprints for multiple ports on the same host/ip without any problems. How can I get this same behavior for CentOS? I couldn't find anything in man ssh_config. (or at least not without disabling fingerprint checking)

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• Can't access sub domain from my network [closed]

  - by Maninder

  I am trying to access http://www.abc.xyz.com from my network, but not able to do so. However, http://www.xyz.com is opening fine in my browser. Asked a friend to open abc.xyz.com from his machine(in a different network), its opening fine. Checked my firewall settings as well. There's no such rule to deny the specific site or something that could be denying access to the sub domain. Kindly advise, how I can troubleshoot my problem.

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• Exclude localhost from htt_proxy

  - by Chilloutman

  I'm trying to access a server that is running locally on my machine (localhost). I'm using the "wget"-command to download the servers http-response. I've also tried using the "curl"-command to do this, but both (wget and curl) are trying to get through my proxy-server and failing at it: --2010-05-04 09:05:34-- http://localhost:8080/api/getplist ... Proxy request sent, awaiting response... 503 Service Unavailable 2010-05-04 09:05:35 ERROR 503: Service Unavailable. Obviously they shouldn't need to go through the proxy, right? So I disabled the http_proxy: export http_proxy="" And then it worked fine. Disabling the the http_proxy every time or permanently are no options. How can I set it to ignore the proxy settings when accessing "localhost"?

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• Network flooded with seemingly empty packets

  - by Adam Particka

  Let me preface this with the fact that I'm just a web developer at my company with little networking knowledge. Earlier today there was a department that lost all of their network connections so I popped open Wireshark and observed the influx of packets to my machine. There was normal traffic (ARP requests, etc.) coming in at ~50 packets every second. Then all of a sudden the log was flooded with packets arriving ~5000 a second. It looks as though they all contain the same data, just a looped sequence. We have someone here looking at it but I thought I would ask if anyone had seen anything like this before. Here's a selection from one of the captures in Wireshark. http://www.cloudshark.org/captures/06f950725c74

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• Running a service as root

  - by kovica

  I have a java program that I use to automate the process of creating VPN settings for clients. The program calls couple of bash scripts, create and copies files around. I have to run it under root user because the whole VPN config is under /etc/openvpn. For this directory I need root privileges. On the same machine I have Glassfish application server and it will call the mentioned Java program. Glassfish is run under non-root user. What is the best, most secure way of running a program as a root user of course without entering a password if I run it via sudo?

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• Why can't I use %USERPROFILE% in %PATH%?

  - by Zano

  On my Windows 7 machine, using the System Properties Environment Variables tool, I try to add %USERPROFILE%\Bin to the system variable PATH. For some reason, that doesn't work, even though %SystemRoot%\system32 works fine. When I try to run commands from the console, files in my Bin folder are not found, even though files in the System32 folder are found. The only difference between UserProfile and SystemRoot that I can see is that the former is a user variable while the latter is a system variable. I i write echo %USERPROFILE%\Bin it yields c:\Users\zano, and if I add c:\Users\zano\Bin explicitly, everything work fine. What's the problem here?

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• Show internal website through iframe

  - by tommasop

  Hi guys, I have a public website with an iframe pointing to a private website (only visible inside my company's lan). I'd like that the iframed pages could also be visible from the outside. Is it possible to achieve? My public server is a Windows Server 2003 with IIS 6 and the server can browse easily to the private server webpage. My private server is an Ubuntu 8.04 machine. I tried with an IIS virtual directory redirection but it's not working.

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• VGA passthrough and desktop virtualization

  - by Zacariaz

  In short, my dream is to have one machine with multiple paravirtualized desktop and server guests, one of which has to be a Windows desktop with powerful graphics. As Windows can't be paravirtualized in the normal sense of the word, I was quite happy when I heard about VGA passthrough, but then I read on. As I understand it, such a setup would mean that the Graphics will be dedicated to one particular guest, thus you wouldn't be able to switch between guests. If this is in fact so, would someone please explain to me what the purpose/use of VGA passthrough is? I can think of no real use for it. Yes it's a cool technology, but to me it seems pointless. It's true that it's possible to passthrough individual VMs to separate GPUs, which is also cool, but in the end I should think that two seperate computers would make life a whole lot simpler. Again it seems rather pointless.

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• How can I fix a computer that is infested with malware and is extremely unresponsive? [closed]

  - by fredley

  Possible Duplicate: How do I get rid of malicious spyware, malware, viruses or rootkits from my PC? I'm troubleshooting a Windows 7 PC for a friend. A couple of days ago it started running 'slow'. It turns out 'slow' is about 15 minutes to the first glimpse of the desktop, and another 30 to show icons. It is possible to open Task Manager, and nothing seems awry, CPU usage at 1-5%, plenty of memory free. The machine is clearly infested with malware though, in particular a program called 'Optimizer Pro' is demanding money to 'remove 5102 files slowing down my computer'. This seems highly suspicious. My problem is though, that I can't access msconfig (I left it for a couple of hours after having hopefully typed it into the Start Menu and hit enter - nothing seems to have loaded), or anything at all basically. I can boot from a Linux Live CD, but can I actually do anything useful from there? System Restore hasn't fixed it either, and Safe Mode exhibits the same behavior.

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• Varnish with multiple hosts/subdomains

  - by jerhinesmith

  I'm new to Varnish, and I'm hoping it already does this "out of the box", but I'd like to clarify before I consider using it in production: Here's my setup: I have multiple sites running off of the same machine that vary by subdomain (i.e. user1.example.com, user2.example.com, etc.) Each "site" has a profile picture that has the same name (i.e. user1.example.com/profile.png, user2.example.com/profile.png) Will Varnish recognize these as separate resources and cache them accordingly? Or will I need to change something in the VCL to tell it include the full host url when looking up cache hits?

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• Utilising a Magento server cluster to drive hot reindexing

  - by WOBenji

  We've asked a similar question in the past, basically we have a very large Magento store with 500000 products which are currently reindexed once a day, during the night. We'd like to speed this process up significantly, we're at about 4-5 hours now. The solution was suggested for us to do something like this on a server cluster and replicate the database changes after they've been done on a machine that isn't being bothered with serving customers. But what is the mechanism for that? How do we replicate those changes across to the live site from the server cluster? Can someone point me in the right direction here?

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• setting my mysql server - limiting domains that can connect

  - by Alex

  I am trying to setup a mysql server on my machine. I would like to limit the domains that it listens for connections to. My understanding is that you can either have it listen to 1 ip or all ip's. Therefore, if i want to connect remotely I have to say all ips. Then I would like to block all domains but the ones I know should actually be connecting.. I believe this is done through windows firewall. However, how do i do this by domain instead of IP?

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• Windows 8 Update on Bootcamp

  - by RazorSharp

  I currently have Windows 8 Consumer Preview installed on a Mac Bootcamp Partition. Microsoft recently released the Windows 8 Release Preview, and I'd like to upgrade, but I'm worried that upgrading to the Release Preview (while in the Windows 8 partition) will erase my other partitions (ex. the Mac OS X partition). By upgrading from Consumer to Release (using the installer on Microsoft's website) while IN the Windows 8 partition, will it end up re-formating the whole hard drive / erasing partitions / removing Mac OS X? Are there any 100% positive answers out there? Will this work, and if not then how would you suggest updating? Note: I have a Time Machine backup of my Mac, but it isn't the WHOLE Mac.

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• Windows 2008 Server network issues

  - by Snowflow

  I have this one server that just doesn't want to be on the internet It's a new server, a twinblade, the other twin works, but not this one. It can connect fine to everythign else in the LAN, but cannot go out on the net It can be reached by ICMP requests over the net (the nagios server can probe it, but not ping it for instance), but not TCP Everything seems fine both in firewall and machine, i get no issues. Anyone care to help me out where i can start looking, i'm seriously confused. edit: it can ping gateway and through the sonicwall site to site VPN, it\s also able to resolve DNS. the only thing it can`t do is reach anything outside of LAN/VPN

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• Some Domain Clients unable to access certain websites

  - by Shaunie

  I have a small domain around 20 clients with a 2003 R2 SP2 DC. Most of my clients can browse the internet freely and dont have a problem. However a couple are reporting problems accessing certain sites. IE: Hotmail, skyscanner, bbc news They can browse the sites sometimes then other times they get 408\409 errors. other machines in the domain can access these sites. I have cleared out dns cache on these machines modified external dns servers on the DC still to no avail. The main issue is the person not able to access skyscanner uses it several times a day to book flights for employess going on leave or returning to work. both clients are running XP SP3 though one machine is getting change for one running win7 shortly. Any advice greatly appreciated. thanks

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• Which browser is the most secure? (research and practically based)

  - by wag2639

  I was wondering which browser is the most secure today, Firefox, Internet Explorer, Chrome, or Safari on a Windows machine with the user running as a Power User/Administrator account. This is not a question about which browser is the best because its the most usable, but more of a question if asked for security, which browser is the most secure given an everyday user's experience (JavaScript, Flash, Ads, etc). Also, would the choice for most secure change if the user was running as a restricted user? To clarify, I'm looking for an answer that's based in research on potential and common exploits and how long it takes for critical problems to be patched.

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• BIND: How do I allow DNS query from specific external host?

  - by krbvroc1

  I'm running Centos 5.8 (bind 9.3.6). Here is my issue... I run my own DNS server to serve the local machine. I would like to use my DNS server from home. Since my home is a dynamic IP address, I am not sure how this would be accomplished. In my named.conf, there is an allow-query{} and allow-recursion{}. It seems both of those take an IP address, but i need to specify a hostname (at least a cname). This is not a public DNS server (so any is not an option). My hostname/cname is already updated automatically using nsupdate. The only solution I can think of, which I do not like, is to change my nsupdate script to somehow modify the named.conf to search/replace the allow-query/recursion IP address. That would require restarting named whenever the hostname changes as well as Is there some other way to handle this?

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• Haproxy, configure for one host

  - by Michal K.

  I have to use haproxy on one machine. I want to do redirect requests from Ip to the same ip (with another port). My configuration (doesn't work): lobal maxconn 4096 # Total Max Connections. This is dependent on ulimit daemon nbproc 1 # Number of processing cores. Dual Dual-core Opteron is 4 cores for example. defaults mode http clitimeout 600000000 srvtimeout 600000000 contimeout 400000000 log 127.0.0.1 local0 log 127.0.0.1 local1 notice option httpclose # Disable Keepalive listen http_proxy 127.0.0.1:8080 balance leastconn # Load Balancing algorithm acl acl_apache path_end .avi .jpeg #option httpchk option forwardfor # This sets X-Forwarded-For ## Define your servers to balance server DE2 127.0.0.1:8080 weight 1 maxconn 15 check

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• Hosting and scaling a Facebook application in the cloud? [closed]

  - by DhruvPathak

  Possible Duplicate: How to find web hosting that meets my requirements? We would be building a Facebook application in Django (Python), but still not sure of where to host it economically, and with a good provision to scale in case the app gets viral. Some details about the app: Would be HTML based like a website,using django as a framework. 100K is the number of expected pageviews in a day, if the app is viral. The users will not generate any media content, only some database data will be generated by them. It would be great if someone with more experience can guide on following points: A) Hosting on Google app engine or Amazon EC2 or some other cloud like RackSpace : Preferable points found in AppEngine were ease of deployment, cost effectiveness and easy scaling. For EC2: Full hold of the virtual machine,Amazon NoSQL and RDMBS database services in case we decide to use them. B) Does backend technology affect monthly cost? eg. would CPU and memory usage difference of Django over , for example , PHP framework like CodeIgnitor really make remarkable difference in running costs. (Here is the article that triggered this thought process : http://journal.dedasys.com/2010/01/12/rough-estimates-of-the-dollar-cost-of-scaling-web-platforms-part-i#comments) C) Does something like Heroku , which provides additional services over Amazon EC2, prove to be better than raw cloud management? It is not that we are trying for premature scaling, we just want to have a good start so that we are ready to handle unpredicted growth and scale.

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