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• Installing Domain Controller on Hyper-V Host

  - by MichaelGG

  Given a resource limited setup consisting of 2 host machines (HyperV-01 and HyperV-02), is it OK to put the domain controllers in parent partition, instead of their own VM? The main reason is that if the DCs go into a child partition, starting from cold on both machines could lead to a bit of an issue, as there'd be no DCs around until well after both parents have booted. I'm guessing this might cause undesirable effects. Am I correct to be worried about joining the host systems to a domain that's only on VMs? The biggest drawback I've heard so far is that if AD gets heavily used, its resources could cut into HyperV's. I'm not concerned about that for this deployment. Any other suggestions? (Besides finding a 3rd machine and running AD on it.)

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• How many VPS' can I create on my server?

  - by user197692

  I need to create as many VPS's on my dedicated server (KVM or OpenVZ) in order to sell them but I really don't know the answer. RAM calculation is simple, it's more about CPU resources, how many VPS's can hold. I'am talking about Intel i7-2600 (4 cores, 8 Threads). I need to deploy as many VPS's. It's all about the nr threads? i.e. 8 threads = maximum 8 x 1vCPU or maximum 4 x 2vCPU? I'am planning to use 1Gb and 2Gb memory on each VPS, the server has 16Gb (but I can raise RAM if need it. So, can I create 8 KVM VPS's with 4 vCPU and 2Gb ram each ? How about 20 VPS's with 1Gb ram and 4vCPU each? How is this decision affected by the hypervisor (KVM, OpenVZ, VMware)?

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• Converge Voice and Data networks using Sonicwall

  - by skinneejoe

  We are looking to converge VOIP and Data traffic onto a single wire so that our client's VOIP phones pass data through to the users computer. We are specing out a new Sonicwall NSA appliance to handle routing functions and layer 2 switches to manage VLANS. Not a huge network, medium sized. What should I know about converging the networks onto a single wire? Obviously I'll want to prioritize voice traffic, is this handled solely in the Sonicwall with QoS configurations or do the layer 2 switches need to be configured differently? Any other pitfalls I should be aware of, or any good resources for learning more?

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• Using both domain users and local users for Squid authentication?

  - by Massimo

  I'm working on a Squid proxy which needs to authenticate users against an Active Directory domain; this works fine, Samba was correctly set up and Squid authenticates users via ntlm_auth. Relevant lines in squid.conf: auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 5 auth_param ntlm keep_alive on acl Authenticated proxy_auth REQUIRED http_access allow Authenticated http_access deny all Now, I need a way to allow access to users which don't have a domain account. I know I could create an "internet user" account in the domain, but this would allow access, although limited, to domain resources (file shares, etc.); I need something that will allow only Internet access. The ideal solution would be using a local account on the proxy server, either a Linux account or a Squid one; I know Squid supports this, but I'm unable to have it use both domain authentication and Squid/local authentication if domain auth is unsuccesful. Can this be done? How?

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• SATA hard disk for laptop on Desktop PC

  - by Lawliet

  I know that this forum is for programming-related questions only, but I'm having this dilemma so here I go. Can I connect a laptop SATA hard disk to Desktop PC? Do I have to use some adapters or I can just plug in SATA power connector and SATA data cable like my Desktop hard disk is connected? I noticed that both laptop and desktop SATA disks use same connectors, but I'm afraid that I might fry my laptop hard disk because the SATA connector has both 12V and 5V voltage (given the fact that laptop hard disks has input voltage of 5V) Thanks in advance

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• 32bit Application Memory Usage on 64bit Windows 7

  - by Brian

  I have an early 2012 Macbook Pro with and Intel I7 processor and 16 gigs RAM running Windows 7 Professional 64bit via Bootcamp. I work in Geographical Information Systems as a programmer so most of the applications I am running are 32bit Applications, but tend to use a lot of resources (i.e. ArcGIS, SQL Server Express, Visual Studio, etc.). I have been noticing that when I have multiple instances of either the same 32bit application or different 32bit applications and they are all working on hefty processing tasks, I am still only topping out at about 30% memory use. I understand 32bit applications are limited to less than 4gb RAM, but I assumed that one instance could use its own 4gb while another instance could use another 4gb to take full advantage of all the memory I have installed. Can anyone explain how this works and how I can get my applications to take advantage of all my memory via running multiple instances?

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• How do you manage updates without a staging environment: CentOS 6.3

  - by Gregg Leventhal

  I am managing about 20 servers, many of them virtual. They are almost all different purpose, and none are clustered. I have a distributed LAMP stack, a few application servers, some build servers, a few KVM hosts. They are CentOS 6.3 mostly with a few Ubuntu (unfortunately). I don't have the resources to setup a staging environment where I can have duplicates of my machines and test updates before rolling them out. I am taking file backups. What I want to know is how you are approaching backing up your Linux systems. I assume you don't just do yum update, but then how are you choosing the packages worthy of updating? When (if ever) are you updating the kernel, etc.. How do you test updates without a staging environment? Snapshot and hope for the best?

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• 8-bit game creator software

  - by dag729

  Hi, Anyone knows about some 8-bit game creator software that runs under GNU/Linux? I want to make some funny game in my spare time, but I prefer to have a tool (or a set of tools) that will help to keep it just a spare-time-project, thus not involving programming! :D Thanks in advance EDIT: For instance, some month ago I tried FPS Creator, being a frontend of DarkGame Studio. Well, FPS Creator is for a 3D FPS game: what I meant is a software similar to this one, but concening 8-bit'ish game.

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• For Loop counting from 1 to n in a windows bat script

  - by raoulsson

  I need to run a windows command n times within a bat script file. I know how to do this in various programming languages but cannot manage to get it right on the windows command line :-( I would expect something like either for(int i = 0; i < 100; i++) { // do something } or even this (though not entirely seriously) 1.upto(100, { // do something }) Thanks! EDIT I can write a program in java, perl, c or whatever that will generate a bat script that looks like this for %%N in (1 2 3 4 5 6 7 8 9 10 11 12) do echo %%N and so on. Or even "better": echo 1 echo 2 echo 3 echo 4 echo 5 echo 6 echo 7 echo 8 echo 9 echo 10 echo 11 echo 12 and then execute it... But the thing is that I need a concise way to specify a range of numbers to iterate through within the script. Thanks!

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• Recursive Batch File

  - by MCZ

  I have a file that looks this: head1,head2,head3,head4,head5,head6 a11,a12,keyA,a14,a15,a16 a21,a22,keyB,a24,a25 a31,a32,keyC,a34 a41,a42,keyB,a44,a44 a51,a52,keyA,a54,a55,a56 a61,a62,keyA,a64,a65,a66 a71,a72,keyC,a74 some message Objective: Write list of unique keys to a text file. For example, the result for the file described above should be: keyA, keyB, keyC Here's the pseudocode I would like to implement in batch file recur.bat Read second line of inputfile If no key exist on second line, return else continue Append keyX to list FINDSTR /v keyX inputfile Pipe results to recur.bat I don't know if this is the most efficient way to do this without using actual programming language. Any suggestions for actual batch file code?

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• Is it possible to add an existing Azure VM to an Azure Virtual Network?

  - by Dan Harris

  Didn't think this was directly related to programming, so thought Superuser would be better than Stack Overflow.... Is it possible to add an existing Azure VM to an Azure Virtual Network if you didn't add it to the virtual network at the time of creation? I can't see an option to change which Virtual Network the VM is connected to. Do you just have to do it at the time you create the VM, and if you don't do it then you will need to re-create the VM and delete the existing one? Example of the scenario: No VM's or Virtual Networks exist I create a VM (VM1), there is no virtual network so it isn't added to one Later I create a Virtual Network in Azure (Network1) It is possible to create another VM (VM2) and connect it to the Virtual Network (Network1), but can I connect VM1 to Network1 or must I delete VM1 and re-create it to get it connected to Network1?

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• String manipulation of type String substitution in mathematical expression

  - by Peterstone

  Imagine something like exp(49/200)+(x-49/200) I want to pass as argument of the function "roundn" whatever operation that is not a addtion or a subtraction So my expresion became roundn(exp(roundn(49/200,n)),n)+(x - roundn(49/200,n) Well the expression I want to manipulate is this: exp(49/200)+exp(49/200)*(x-49/200)+1/2*exp(49/200)*(x-49/200)^2+1/6*exp(49/200)*(x- 49/200)^3+1/24*exp(49/200)*(x-49/200)^4+1/120*exp(49/200)*(x-49/200)^5+1/720*exp(49/200)*(x-49/200)^6+1/5040*exp(49/200)*(x-49/200)^7+1/40320*exp(49/200)*(x-49/200)^8+1/362880*exp(49/200)*(x-49/200)^9+1/3628800*exp(49/200)*(x-49/200)^10+1/39916800*exp(49/200)*(x-49/200)^11 I´m looking for a method (That include whatever program) not based in lenguage programming, as much batch or somithing like that... Thank you!

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• Hyperic HQ says the server is down, but it is not!

  - by Diego Jancic

  Hi, I've been using HQ for a couple months now, and everything worked fine. But since yesterday all resources go down for a couple hours, and then everything restores to normal, and then go down again without doing anything. The server of course is working, the HQ server and agent are both working, and the IPs were not modified. I've tried to re-run the setup in the HQ agent, and it did not change anything. Agent is in Windows 2008, and Server is in Windows 2003. I'm using HQ Version 4.1.2 (build #1053 - May 06, 2009 - Release Build) Any hint? Thanks! Update: I guess (although I'm not sure) it stopped working when the disk on the server went full, with 0 bytes of free space. Of course I've freed more than 15gbs and restarted the HQ server/database.

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• Uploading with browser makes all other browser tabs and devices disconnect

  - by fabsenet

  Whenever I upload a video to YouTube all other browser tabs behave like there is no connection at all. It even affects my phone and other computers on the network therefor I think it has to do with my router. When the upload is done everything works normally again. I never observed this behavior with any other upload. My router is a Fritz!Box 7390 and my uploading PC is connected through a 1000mb/s switch (wired) to the router. Uploading through another browser does not change anything. I understand that other sites become slow as the network resources are limited, but stopping altogether feels wrong. speed.io measures for my internet connection: 40.894 Kbit/s down, 2.685 Kbit/s up, 29 ms ping, 2.048 con/m connects

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• Intraforest user account merge with Active Directory

  - by Neobyte

  I have a scenario where there is a root domain (RD) and two child domains (CD1 and CD2). Users have accounts on both CD1 and CD2, with identical samAccountNames, names etc, and various applications either use the CD1 or CD2 account for authentication to resources. I need to collapse CD2 into CD1, so I want to merge the accounts together. However ADMT does not allow me this option (merge options are greyed out), I think because it does not support intraforest merge of accounts (although it does not explicitly state this anywhere in the documentation). My question is - what is the easiest way for me to merge these accounts? Ultimately all I really need (I think) is for the SID of CD2\user1 to be added to the SIDHistory of CD1\user1 - is there a tool that supports this? Computer accounts and profiles are not a concern for this scenario. Group migration is unlikely to be an issue either - CD2\user1 is usually granted resource access through membership of a group on CD1.

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• Is Windows Media Player able to play DTS audio?

  - by rolgae

  I'm trying to play DTS audio with Windows Media Player 12 on Windows 7. For a MPEG-TS file with video and DTS audio, only video is played. A file containing only a DTS audio stream is rejected. But: WMP is able to play the DTS audio stream of a DVD. So, Is Windows Media Player able to play DTS audio, or not? And if: How do I make him play my DTS files? I did not find any good resources of the supported codecs. Just things like "WMP can play .mpg files, ..." VLC is able to play all of the above files. I do not want to install third party codec packs, thats not the question!

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• Which equipments should I buy for a laboratory?

  - by Hossein Margani

  Hi every body! I want to create a network of computers for a network laboratory in a university. I want to install windows on them. What is the fastest way for doing this and also which equipments I should buy for this laboratory. I also want to use this network as a computer laboratory, operating system laboratory, programming laboratory, microprocessor laboratory, computer architecture laboratory and software engineering laboratory. I should emphasis that this is a scholastic laboratory. Thanks.

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• Is it possible to restrict fileserver access to domain users using computers that are members of the domain?

  - by Chris Madden

  It seems domain isolation can be used to accomplish, but I'd like a solution that doesn't require IPsec, or more accurately, doesn't require IPsec on the fileserver. IPsec if done in software has a large CPU overhead and our NAS boxes don't support any kind of offload. The goal is to avoid authenticated users using non-managed machines to access network resources. Network Access Protection (NAP) and the various enforcement points looked promsiing but I couldn't find a bulletproof way to use them [which doesn't require IPsec on the fileserver]. I was thinking when a domain user accesses the NAS box it will first need a Kerberos ticket from AD, so if AD could somehow verify the computer that was requesting the ticket was in the domain I'd have a solution.

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• PDF Encrypted, Hidden Watermark

  - by Dave Jarvis

  Background Using LaTeX to write a book. When a user purchases the book, the PDF will be generated automatically. Problem The PDF should have a watermark that includes the person's name and contact information. Question What software meets the following criteria: Applies encrypted, undetectable watermarks to a PDF Open Source Platform independent (Linux, Windows) Fast (marks a 200 page PDF in under 1 second) Batch processing (exclusively command-line driven) Collusion-attack resistant Non-fragile (e.g., PDF - EPS - PDF still contains the watermark) Well documented (shows example usages) Ideas & Resources Some thoughts and findings: Natural language processing (NLP) watermarks. Apply steganography on a randomly selected image. http://openstego.sourceforge.net/cmdline.html The problem with NLP is that grammatical errors can be introduced. The problem with steganography is that the images are sourced from an image cache, and so recreating that cache with watermarked images will impart a delay when generating the PDF (I could just delete one image from the cache, but that's not an elegant solution). Thank you!

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• Multiple test Active Directory envirovments hand in hand with production domain controllers

  - by MadBoy

  What's the best approach of having multiple test environments next to production one? We have multiple programming teams that build solutions that use Active Directory very often. We have tried different approaches, starting with their own domain controllers (in same subnet), or additional OU's in our production AD that the team gets control over and can create/delete accounts within that one OU. We thought of possible 4 solutions: Setting up separate OU's in ou production env. Creating subdomains for our contoso.com domain like test.contoso.com, something.contoso.com and delegating control to the teams (would we need additional DC's or the two that we have already would be enough to hold this? Setting up additional test domain controler that has a trust to our main domain and all teams can use the test domain controler as they please. Setting up single domain controller for every team/project. We're taking in consideration amount of resources needed, security (for example having multiple domain controlers with multiple passwords may lead users to use simpler passwords) and overall best practices for this scenario.

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• Development environment for embedded system

  - by Howard Lee Harkness

  I need to develop software in C/C++ for an embedded system. I have Debian 6 running off of a USB hard drive. I would like to be able to generate a stripped-down kernel with modules, and install them either on a CF card or a USB 'thumb' drive. I succeeded in building a Linux 3.6 kernel and running it in Debian off of the USB hard drive, but I am having trouble figuring out how to install it on the thumb drive. I would like a build cycle that looks like this: 1) Build module or kernel with desired software 2) Install it on thumb drive 3) Boot and test I would like to use the same system for both development and testing, if that is feasible. I am looking for resources and tutorials that would help me understand how to do this.

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• Setting Redmine path

  - by David Parunakian

  Hello, How can I set the path on which Redmine should be run, e.g. example.com:3000/redmine instead of example.com:3000? There is an appropriately named option in the settings panel, but it serves a different purpose, according to the documentation and experimental observations (it is used to write URL in emails sent to users). A wider picture: I need this in order to properly serve Redmine on port 80 over Apache's mod_proxy (i.e. at example.com/redmine). The problem is that when running it on /, the home page fails to load the necessary resources (such as JavaScript and CSS files). Any workarounds?

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• How to make a vm scale when demand for resource increases

  - by Cray XT3

  i am having a server with 16 virtual core and 24G RAM,using Xen virtualization and ubuntu as dom0 Created 4 VMs (in para mode),each with different applications. CPU Load vary on each vm,somtimes first vm reaches nearly 100% CPU and others under 25% or even less. So is there a way in which vm can get cpu from other vms when they are not actually using it or utilization is under 25%.Same in the case of RAM also. I am not sure whether i am mentioning Cloud here. Initially i would like to give every vm a single VCPU,but can scale up to 8 or more by taking cpu from other vms if they are not using it. Is there any kind of tool that makes vm to scale its resources when demand increases. Is cloudstack and openstack designed for these kind of purpose or is that just a GUI to manage VMs.

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• MySQL Windows vs. Linux: performance, caveats, pros and cons?

  - by gravyface

  Looking for (preferrably) some hard data or at least some experienced anecdotal responses with regards to hosting a MySQL database (roughly 5k transactions a day, 60-70% more reads than writes, < 100k of data per transaction i.e. no large binary objects like images, etc.) on Windows 2003/2008 vs. a Debian-based derivative (Ubuntu/Debian, etc.). This server will function only as a database server with a separate Web server on another physical box; this server will require remote access for management (SSH for Linux, RDP for Windows). I suspect that the Linux kernel/OS will compete less than the Windows Server for resources, but for this I can't be certain. There's also security footprint: even with Windows 2008, I'm thinking that the Linux box can be locked down more easily than the Windows Server. Anyone have any experience with both configurations?

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• Can someone correct me about Windows 2008 DFS implementation

  - by cwheeler33

  I have 2 two Windows 2003 file servers using DoubleTake at the moment. They are in an 2003 AD domain. And each server has it's own disk set. It is time to replace the servers... I want to use Windows 2008 64bit Ent. I was thinking of using DFS-R to replace DoubleTake. The part I'm not sure about is clustering. Do I need to have shared storage if each server has a copy of the data? I want to have the data available to the same share name, so maybe I don't fully understand how DFS is set up. I currently have about 6TB of data. I expect to grow by 3TB a year on these file servers. Any resources/books that could teach me would be good to know as well.

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