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  • What is the best way to change the replication scheme of 2 currently replicated slaves?

    - by mmattax
    I have MySQL replication set up in production as follows: DB1 - DB2 DB1 - BAK Where DB2 and BAK are slaves to DB1. All 3 servers are in sync (0 seconds behind the master) and have 30+ GB of data. I'd like to put the servers in a new master-slave configuration as follows: DB1 - DB2 - BAK What is the best way to change the master host on BAK? Is there a way to avoid having to stop the slave thread on DB2 and getting a mysqldump for BAK (a 5-6 hour processes) ?

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  • fstab mount after network initialization

    - by Philip
    I'm automatically mounting a NFS with fstab. Sometimes the mount fails because the hostname of the NFS mount cannot be resolved (getaddrinfo failed). I'm assuming that this happens because the network initialization is slower than the mounts. Is there any way to initialize the network before mounting any devices? I'm already using _netdev as a mount option but this does not help. This is my current fstab file: # <file system> <mount point> <type> <options> <dump> <pass> /dev/md2 / ext3 errors=remount-ro 0 1 /dev/md1 /boot ext3 errors=remount-ro 0 1 /dev/sda3 swap swap defaults 0 0 /dev/sdb3 swap swap defaults 0 0 connect.mygluster.net:/data /var/gluster/data glusterfs ro,_netdev 0

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  • Converting an ancient RH8 system to VMware ESXi

    - by donatello
    I am curious to know what options I have to convert a very old RedHat8 machine to a virtual one on ESXi. Looking at VMware Converter it seems there's an option to login to the RH8 using SSH, and from there it will convert to the ESXi-server. That makes me a bit nervous though, exactly what is happening there? The RH8 machine is slightly critical, and if anything messes up it'll likely result in many hours extra work. :( Another option I thought of was to boot a LiveCD on RH8-system and create a raw "dd dump" of the disk. The similar method is used to restore the image, I boot a LiveCD on the VM in ESXi and use "dd" to write it to disk. Is there any other option I could use? I'm using the cheap version of ESXi, hence I have no access to the Converter BootCD so these rather cumbersome methods is the only I can think of. :)

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  • Control scheduled tasks execution

    - by SJuan76
    We are a small shop. I am mainly a programmer, but due to being the only one that risks to manage our servers, the task has fallen on me (yet I it is still a secondary function so I cannot give it too much time). Over the course of years we have needed to create a decent number of .bat scripts that run as scheduled tasks in our servers (dump DB servers, SVN servers, copy files, etc.). Manually checking that everyone has proceeded ok is a time consuming task. I could get them to send an email on completion, but then I would get swarmed by lots of emails each morning. If I setup them to only e-mail on failure, I might miss the instances where the error causes the task to abort (or even not to start). Are there other alternatives? We are currently using Windows 2003 R2, but we are thinking of adding some Linux server soon, so a cross-platform solution would be best.

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  • Apache Tomcat 6.0.29 startup causing Win XP SP3 reboot

    - by Liam
    Some of our Windows XP Developer machines die (black screen - no ping) when starting up Tomcat from a console. This only happens if the Tomcat debug console window is displayed (not minimised). When minimised, the startup / run is successful. I've checked for Tomcat logs and the crash sessions produce empty (zero bytes) tomcat log files. No system logs exist and no crash dump is created even though this is enabled in the Windows settings. The machine is dual screen and another machine with the same image has the same issue. The only clue is just before the crash, one of the monitors the system reports "Cannot display video mode 1280x1024" (approximate error, didn't write it down). Is there a way I can get Windows to produce log files of this crash session? Beyond running Tomcat as a service / minimised window, how can I fix (or even investigate)?

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  • correct format for datetime appended to filename

    - by jhayes
    I'm trying to setup a batch file to execute a set of stored procs and dump the output to a timestamped text file. I'm having problems finding the correct format for the timestamp. Here is what I'm using osql.exe -S <server> -E -Q "EXEC <stored procedure> " -o "c:\filename_%date:~-0,10%_%time:~-0,10%.txt" The error I get is: Cannot open output file - x:\filename_Thu 06/25/_16:26:43.1.txt No such file or directory I can't find the documentation and I've played around with it but can't find the correct format.

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  • FTP server (vsftpd) with webgui

    - by manutenfruits
    I want to build a file server to make users able to upload and download mostly multimedia, but also common files. Right now I have an Arch installation with vsftpd and I'm about to install miniDLNA for multimedia sharing. The only problem is that FTP doesn't seem to fit my needs, because almost always makes the users need a client such as FileZilla to make the server friendly. I have been looking for a web frontend for vsftp but apart from management interfaces there's nothing. I need a frontend accessible from a browser through which users can navigate throught the folders in an easier and more elegant way than the plain FTP display that browsers make by default. It should be able to let users upload files and, as an awesome extra, let them play the multimedia directly on the browser. For this, I am willing to dump FTP if needed, I've heard about HTTP File Servers but don't know too much about it. I could code everything myself, but there's gotta be something out there already.

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  • What happend to walterzorn.com?

    - by Vinz
    I just wanted to use the function plot from waterzorn.com but it seems like the site is down, I only get 404 responses. Does anybody know what's up with the site and if/when it will be back online? So far I could only find the following thread which doesn't have any answers. If you don't know: Walter Zorn had a JavaScript framework that enabled you to draw vectors with DHTML back before there was canvas.

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  • Can you link to a good MySQL dumper PHP script?

    - by Ivan
    I need to migrate a website to another host. I have only FTP server access and MySQL name+pass (the MySQL server's IP I was provided is 127.0.0.1, and there's neither PhpMyAdmin nor SSHell to use). A web app run there can access the DB using credentials I know and localhost server. So I'd need a PHP script, that will correctly dump all the available databases of the MySQL server so that they can be imported on the new server. Can you recommend a good one?

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  • How to change subversion working copy UUID?

    - by Ioan
    I've recently updated Subversion repositories from an old 1.2.3 version to 1.6.0 via svnadmin dump/load. The old repositories all used the same UUID (repositories were created using by copying a template repository). I've changed the UUID on a couple of the new repositories via svnadmin setuuid to be unique. I can't just relocate my existing working copies of those repositories because the UUIDs are different. I know about exporting the working copy and checking out from the new repository, but I was wondering whether there was a way to just change the UUID of the working copy in-place, like what svnadmin setuuid does for repositories.

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  • Multithreaded TIFF to PNG conversion

    - by mtone
    I'm working with images of scanned books, so hundreds of high resolution pictures. I'm doing conversion work with Photoshop Elements - I can quickly save them to uncompressed TIFF, but converting to compressed PNG using a single thread takes ages. Do you know a software, ideally simple and free, that would batch convert those TIFFs to PNG in a multi-threaded manner (4 to 8 simultaneous files) to take advantage of those cores and cut converting times? I'm not too worried in slight variations in final size.

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  • How to restore Google "Cached" links?

    - by Steven Penny
    On Google search, "Cached" links are available, which take you to a version of the page saved on Google servers. These links are quite useful if the source page is temporarily down or otherwise. Back in July 2011 Google moved these links inside of an "Instant Preview" box. Many people from this thread and others either simply cannot find the new links or prefer the old location. Edit To be clear, the question is how to restore the links to the old location.

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  • What virtualization solution should I try next, after hitting problems w/ VMWare Player in dual-netw

    - by Alex R
    I have been using VMWare Player 2.5 for a while (Ubuntu guest on Vista host, 32-bit). VMWare had worked great until now but then I hit a brick wall: Due to some reorganization of my home network, the host machine now has to use a wireless connection to reach the Internet, while the printer, fileserver, and other important stuff are attached to a local gigabit hub. I have tried several tricks, such as editing the .vmx file, changing settings in vmnetcfg, etc, but I'm still unable to get the virtual Ubuntu box to connect each of the two virtual NICs to different networks (I did get it to recognize two NICs, but both DHCP'd onto the gigabit LAN). So, I'm ready to dump vmware for something with a little more low-level control of network settings. Virtualization is such a crowded space, I could spend months evaluating every product out there. I'm hoping for a shortcut... Can anyone recommend the best VM for my situation described above? Thanks

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  • How to determine non-movable files in Windows 7?

    - by David
    Is there a way to determine which unmovable files are preventing Shrink Volume from releasing the full potential free space? Background: I have a 90 GB partition with Windows 7 on it, and 60 GB free space. I want to shrink it down to about 40 GB, and use the reclaimed 50 GB for a separate data partition. The Shrink Volume tool in Disk Management is only willing to give me 8 GB back. My understanding is that this is because of immovable files. I've followed the instructions found here, which involved disabling hibernation, pagefile, system restore, kernal dump, making sure all related files were deleted, and defrag'ing. I have successfully followed those same instructions before on this same drive, and partitoned the original 150 GB space into 90 GB and 60 GB, but I'm not so lucky this time.

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  • anonymous access to ftpd

    - by gcb
    I need FTP on my local LAN so my scanner can send me scans. I am on Debian sid. I installed ftpd and created the user anonymous. I removed anonymous from /etc/ftpusers When I try to login as anonymous it says: login failed. I can't seem to find any log file. I'm using FTP server (Version 6.4/OpenBSD/Linux-ftpd-0.17) update:I needed that so my printer had one place to store my scanned documents on the LAN. solved that buying a dedicated USB pen drive (thankfully I bought a printer one with plenty of options) but in the past this was a very simple task. Install ftpd, specify the directory for anonymous access, and be done with it. now every ftp daemon has several layers of security and chroot in it's core... this is just crazy when all you need a place for a printer to dump files in a secured network.

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  • How to diagnose a Windows XP hard crash

    - by Jon
    I have a 64-bit Windows XP machine which has hard crashed several times today. The symptoms are that the screen just goes blank, then the reboot cycle starts. There is no blue screen and even though it is switched on, no crash dump file is created. On all occasions it has happened during a period of high CPU/memory activity. I have run a full Dell diagnostics with no failures. Any ideas how to track this down further? Thanks.

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  • Reverse lookup of inode/file from offset in raw device on linux and ext3/4?

    - by lilinjn
    In linux, given an offset into a raw disk device, is it possible to map back to an partition + inode? For example, suppose I know that string "xyz" is contained at byte offset 1000000 on /dev/sda: (e.g. xxd -l 100 -s 1000000 /dev/sda shows a dump that begins with "xyz") 1) How do I figure out which partition (if any) offset 1000000 is located in?(I imagine this is easy, but am including it for completeness) 2) Assuming the offset is located in a partition, how do I go about finding which inode it belongs to (or determine that it is part of free space) ? Presumably this is filesystem specific, in which case does any one know how to do this for ext4 and ext3?

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  • How to sync passwords one-way between windows domains without trust relationship?

    - by Franco C.
    We're migrating from Windows 2003 to 2008 SBS. We will run concurrently for a short period of time. I cannot establish a trust relationship between Server 2003 & Server 2008 SBS and I would like to know if there is a way to sync the passwords between 2003-2008? For example, I would like to dump the pre-encrypted passswords to a file in 2003 and then use this to update the passwords for the correspoding usernames in 2008 SBS. Is this possible? I have no need to ever see the clear text version of the passwords. I see one commercial product, but it hardly seems worth it given the temporary nature of my project... Thanks, Franco

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  • USB Device With Embedded Fileserver

    - by Richard Martinez
    I'm attempting to access logs from a proprietary hardware box with no reasonable hope of modifying the software. There is a process on the device to dump log files to a flash drive on the USB port after entering a code sequence. Currently, analysis of the logs requires the following: Physical presence at the device Manual entry of the code sequence Removal of USB device Insertion of USB device into a normal Linux box I'm hoping there is some sort of device that can act as a USB mass storage device but simultaneously make it's contents available as a network file share (wired preferred). Does such a device currently exist? A combo hardware/software solution would also work.

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  • Cannot change default path to php on OS X Snow Leopard

    - by Sakis Vtdk
    I have installed MAMP on OS X Snow Leopard (10.6.8) and I want to change the default path for PHP. I tried both of the answers on this question, and on this question, and in this thread but when I'm trying which php in Terminal I still get /usr/bin/php. I'm starting to get the impression that I'm doing something profoundly wrong, so any idea about what that might be, will be greatly appreciated. Thanks in advance.

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  • Windows7 + Dell D830 = frequent blue screens

    - by Mulone
    I'm using Windows 7 on a Dell laptop (Latitude D380). The laptop used to be incredibly stable on Windows XP, but now I experience frequent blue screens (with a message saying "MEMORY DUMP") when I open a lot of applications concurrently. Is there a way to diagnose the issue and track it down? It could be some incompatible drivers or application. I checked the folder C:\Windows\Minidump and I found some files. THen I tried to open them and they disappeared. Any hints?

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