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  • Mysql Servers for Attendance System

    - by foo
    I'm building an attendance system. There are about 20 places where people will check in and check out using Mifare 1K Card. It will use MySQL as the database. The system will display something like "#ID IN: 800AM" when the first time the user checks in and "#ID OUT: 400PM" when the user checks out. For this to work, all the databases need to be synchronized with each other all the times. For an example, if user A went to location #1 to check in but by the time he wants to return home, the server at location #1 went down, he needs to go to location #2 or the nearest server to check out. The server at location #2 should display '#ID OUT: 400PM" and not "#ID IN: 400PM" since he's already checked in. So, what should I use to ensure this idea will work? My main concern is with the network (other department manages it) which is very unpredictable. It just love to go down anytime it wants to. Update LOL, didn't realize my question is not clear, just noticed it when you guys pointed it out, sorry about that. My real question is, how can I configure my MySQL to be synchronized with each other (20 servers)? MySQL cluster ? (tried reading about it, but I'm not sure if it's the right thing to do) My current setup (first phase): Local database for each server OS: Slackware A main server that keeps track which staff is at which server A web based front end for the user to see their history (which connects to the server based on their records) Main Pros No worries about network problems since it is a local database Main Cons A user can only check in and out at the same server. Databases/Servers are not connected with each others. Have to add the user to each server if the users want to check in at different locations. Which means, if he wants to go to location A, he must be checked out from location A first and then check in at location B. The server at location B didn't know that the user has checked in before at A. By the way, I've already centralized my NTP to a local server. About the network, let's just say, I don't have the authority to make changes so that the network will be better. The network won't effect all 20 servers at once, usually, just a few of them for several times a week. If there are anything else you would like me to answer, please just ask.

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  • password protect apache user directory using system passwords

    - by Jeff
    I have set up Apache to check user passwords using these modules: LoadModule authz_user_module modules/mod_authz_user.so LoadModule authn_file_module modules/mod_authn_file.so LoadModule auth_basic_module modules/mod_auth_basic.so However, these modules require me to manually add everyone to a new password file (which requires every user to type in their password). Is there a way to have Apache check the system passwords, so that anyone who can ssh can use the same password for web login?

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  • Make a SAMBA file system visible to all users with mount_smbfs

    - by vy32
    We have a Macintosh OS10.6 server and a big storage system accessible via SMB. Right now we can mount partitions, but when we mount them they are only accessible to the user that did the mount. All other users get "Access Denied." It there any straightforward way to mount so that all users will be able to access the files? (We want all users mapped to a single SMB UID.)

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  • Multicore system. How are the cores "sorted"

    - by asdrubael
    If I have a system with let's say two Quadcore CPUs and HyperThreading enabled, how do I know how the phsyical and virtual cores are sorted? For example if I force a process to run on "CPU 0" how to know which Core this really is? I remember a complex drawing about this, but didn't find anything useful.

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  • Install boot loader with no operating system on hard drive

    - by Jeet Robert
    I am trying to reset — or rather, install — a boot loader on my hard drive. I initially had a Linux distro installed, which I completely wiped out. Now, when I try to install Windows 7 from my USB, my machine says Missing operating System And when I don't boot with USB, it says "bootmgr is missing" So now I am wondering, how I can install a boot loader, so I can install Windows 7?

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  • Lazy linux backup system?

    - by Alex
    Ok, so I want to say Time Machine, but that's note exactly what I'm looking for. I want to set up a system that will regularly (hourly?) back up the /home directory of our machine. time Machine style things are naturally preferable since they save space by only saving the changes, but honestly, this is important enough that I can suffer some waste. Any ideas?

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  • Create an image of a CentOS system

    - by Grant unwin
    I provide a server (and site) to a client via Rackspace Cloud Hosting, and my client wants to now host the entire thing within his own account. Since it's not possible to just transfer the ownership, I need to somehow create an image of the machine via SSH which I can then use on a new server. Is this possible, and does anyone know of a way of doing this. Note I am talking about virtualised machines here, but I only have access to the virtualised partition and not the system as a whole.

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  • Monitor File Changes On Windows System

    - by user10487
    I am looking for a utility that can take a snapshot of the files in directories that I am interested in and then compare that snapshot to the current state of the system and show me any files that have been added, changed, or deleted. Does anyone know of solutions that provide this functionality? Thanks, Nate

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  • Remote Server: Please wait for the System Event Notification Service

    - by Jeff Handley
    I was rebooting a remote server (Windows Server 2008 R2 Standard) over remote desktop and the session now shows the blue screen during the shutdown sequence, and the message "Please wait for the System Event Notification Service..." It seems that everything is still running on the server (for instance, http://jeffhandley.com is still responding), but I need to get the machine to finish the reboot sequence. How can I force the machine past this point? It's been stuck there for about 30 minutes.

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  • Updating Python on Ubuntu system

    - by efficiencyIsBliss
    I want to update the Python build on my Linux box, but the only way I know how to do it is uninstalling the current version and installing the new one. My system is already up to date (I updated yesterday). I wanted to know if there is a way to update a specific program from the command line, like sudo apt-get update <program-name>. I know this command doesn't exist, but I'm hoping something equivalent does.

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  • Status report system?

    - by John
    Anyone know of an open-source system for sending out 'what tasks did you to today' type status report reminders in email, then collecting them in an internal website? I checked on freshmeat but didn't see anything. Thanks!

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  • System completely freezing

    - by Brett
    Just started using ubuntu on a machine and I'm also using a new video card. The system has freezed up a couple of times in the last hour. The display remains static, and the mouse cursor does will not move. Any ideas what could cause this?

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  • Sync file system changes in a folder to server on LAN (via SSH or NFS) automatically

    - by Peter Farsinsen
    Hi, I'm looking for a solution that'll automatically sync file system changes in "/folder1" to "/folder2". Any change should be synced (deleted files, new folders etc.) without any confirmation. Preferably the changes will happen to "/folder2" instantly. "/folder1" is on my hdd "/folder2" is on a server on the LAN (can be accessed via SSH or NFS) I'm on OS X 10.6. I can't seem to find just the right tool. Does anyone

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  • Why am I getting "ArgumentError: wrong number of arguments (1 for 0)" when running my rails function

    - by Hisham
    I'm stumped on what's causing this. I get this error and stack trace in all my functional tests where I call 'post'. Here is the full stack trace: 7) Error: test_should_validate(UsersControllerTest): ArgumentError: wrong number of arguments (1 for 0) /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route.rb:48:in `to_query' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route.rb:48:in `build_query_string' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route.rb:46:in `each' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route.rb:46:in `build_query_string' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route.rb:233:in `append_query_string' generated code (/Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route.rb:154):3:in `generate' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:365:in `__send__' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:365:in `generate' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:364:in `each' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route_set.rb:364:in `generate' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb:208:in `rewrite_path' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb:187:in `rewrite_url' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb:165:in `rewrite' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/test_process.rb:450:in `build_request_uri' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/test_process.rb:406:in `process' /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/test_process.rb:376:in `post' functional/users_controller_test.rb:57:in `test_should_validate' /Users/hisham/src/rails/ftuBackend/vendor/rails/activesupport/lib/active_support/testing/setup_and_teardown.rb:60:in `__send__' /Users/hisham/src/rails/ftuBackend/vendor/rails/activesupport/lib/active_support/testing/setup_and_teardown.rb:60:in `run' This is the test I'm running: def test_should_validate post :validate, :user => { :email => '[email protected]', :password => 'quire', :password_confirmation => 'quire', :agreed_to_terms => "true" } assert assigns(:user).errors.empty? assert_response :success end

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  • Assert.AreEqual() Exception in VS2010

    - by Tom Miller
    I am fairly new to unit testing and am using VS2010 to develop in and run my tests. I have a simple test, illustrated below, that simply compares 2 System.Data.DataTableReader objects. I know that they are equal as they are both created using the same object types, the same input file and I have verified that the objects "look" the same. I realize I may be dealing with a couple of issues, one being whether or not this is the proper use of Assert.AreEqual or even the proper way to test this scenario, and the other being the main issue I am dealing with which is why this test fails with this exception: Failed 00:00:00.1000660 0 Assert.AreEqual failed. Expected:<System.Data.DataTableReader>. Actual:<System.Data.DataTableReader>. Here is the unit test code that is failing: public void EntriesTest() { AuditLog target = new AuditLog(); target.Init(); DataSet ds = new DataSet(); ds.ReadXml(TestContext.DataRow["AuditLogPath"].ToString()); DataTableReader expected = ds.Tables[0].CreateDataReader(); DataTableReader actual = target.Entries.Tables[0].CreateDataReader(); Assert.AreEqual<DataTableReader>(expected, actual); } Any help would be greatly appreciated!

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  • TeamCity stopped working once I added NUnit to the mix

    - by Dave
    I'm struggling a lot trying to get our build server going. I am currently running tests in a Windows XP virtual machine, and have installed TeamCity v5.0.3, build 10821. I am using NUnit v2.5.3. I finished the initial setup with TeamCity without any issues at all, provided that I use the sln2008 build runner that makes the entire process almost brainless. It's really quite nice that way, and very satisfying to see your first successful automated build. Now it's time to kick it up a notch and I wanted to get NUnit working. I keep the NUnit 2.5.3 assemblies in an external libs folder in SVN, so I checked that out onto the test system. I selected NUnit 2.5.3 from the build runner options, as the online instructions had recommended. But when I build, I get the following error: Window1.xaml.cs(14,7): error CS0246: The type or namespace name ‘NUnit’ could not be found (are you missing a using directive or an assembly reference?) Window1.xaml.cs(28,10): error CS0246: The type or namespace name ‘Test’ could not be found (are you missing a using directive or an assembly reference?) Window1.xaml.cs(28,10): error CS0246: The type or namespace name ‘TestAttribute’ could not be found (are you missing a using directive or an assembly reference?) Everything compiles great in the IDE. From finding blog posts and submitting comments, I got some advice and confirmed the following: I have the HintPath value set properly in my project file (points to the external lib) I can also do a full Release and Debug build from the command line using msbuild I have tried do use the NUnit installer so nunit.framework.dll gets registered into the GAC I have changed the build agent's logon account to be a user on the test system, rather than LOCAL SYSTEM. Nothing seems to help... can anyone else here offer me some advice on what to try next?

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  • Ruby on rails generates tests for you. Do those give a false sense of a safety net?

    - by Hamish Grubijan
    Disclaimer: I have not used RoR, and I have not generated tests. But, I will still dare to post this question. Quality Assurance is theoretically impossible to get 100% right in general (Undecidable problem ;), and it is hard in practice. So many developers do not understand that writing good automated tests is an art, and it is hard. When I hear that RoR generates the tests for you, I get very skeptical. It cannot be that easy. Testing is a general concept; it applies across languages. So does the concept of code contracts, it is similar for languages that support it. Code contracts do not generate themselves. The programmer must add the requirements and the promises manually, after doing some thinking about the algorithm / function. If a human gets it wrong, then the tools will propagate the error. Similarly with testing - it takes human judgement about what should happen. Tests do not write themselves, and we are far from the day when a business analyst can just have a conversation with a computer and tell it informally what the requirements are and have the computer do all the work. There is no magic ... how can RoR generate good tests for you? Please shed some light on this. Opinions are ok, for this is a community wiki. Thanks!

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