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• VMware ESXi 4 On-Disk Data Deduplication - possible and supported?

  - by hurikhan77

  Environment: We are running multiple web, database, and application servers which usually share a pretty common installation (gentoo linux) and similar configuration in VMware ESXi 4. The differences are usually only some installed features or differing component versions. To create a new server, I usually choose the most similar (by features) running server, rsync a copy of it into freshly mounted filesystems, run grub, reconfigure and reboot. Problem: Over time this duplicates many on-disk data blocks which probably sums up to several 10's of gigabytes. I suppose if I could use a base system as template with the actual machines based on top of that, only writing changed blocks to some sort of "diff image", performance should improve (increased cache hit rate) and storage efficiency should increase (deduplicated storage space). This would be similar to what ESXi already supports for RAM deduplication (page sharing). Question: Is there any way to easily do this on ESXi 4? I already share the portage tree via NFS but this would not work for the rootfs.

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• Configuring Nginx for Wordpress and Rails

  - by Michael Buckbee

  I'm trying to setup a single website (domain) that contains both a front end Wordpress installation and a single directory Ruby on Rails application. I can get either one to work successfully on their own, but can't sort out the configuration that would let me coexist. The following is my best attempt, but it results in all rails requests being picked up by the try_files block and redirected to "/". server { listen 80; server_name www.flickscanapp.com; root /var/www/flickscansite; index index.php; try_files $uri $uri/ /index.php; location ~ \.php$ { include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /var/www/flickscansite$fastcgi_script_name; } passenger_enabled on; passenger_base_uri /rails; } An example request of the Rails app would be http://www.flickscan.com/rails/movies/upc/025192395925

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• CD/DVD cataloging software?

  - by NoCanDo

  I'm looking for freeware, or preferably open source CD/DVD cataloging applications. Right now I'm testing http://www.gentibus.com/us/Download.htm, anyone got any other suggestions? I'd like the software to be actively maintained and not released and left behind. I'm looking for software which allows me to catalog, sort, search my DVDs/CDs into databases. Like I've 1 group of 10 dvds only with Fonts etc. I want to read the content into a Database called "Fonts'". Another group of 5 DVD's with Stockimages, and I want to read all 5 DVDs into the Database "Stock Images". Then I want this software to be able to open Database "Stock Images", I want to be able to browse DVD 1 - 5 and to see DVD 1 - 5's contents without having the DVD's in the optical drive.

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• What configuration management solutions exist in a non-networked environment?

  - by Rob Spieldenner

  My servers exist in an environment without outside network connectivity (this is a requirement), so when I deploy updates all packages, binaries, config files, etc. must be included on the delivered media. And of course I want some sort of configuration management so I can tell what has and hasn't been installed. So I was wondering if people had experience with chef, puppet, or another configuration management type tool for dealing with this type of environment. Worst case I deploy my updates as an RPM. EDIT: My setup has both Linux servers and Windows servers.

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• IIS cannot access itself

  - by dave

  We are on a corporate network that uses ISA and I am having issues trying to not have requests go through ISA. I have IIS7 on my local Windows 7 machine that has websites and a service layer. The websites access the service layer using a xxxx.servicelayer.local address that is set up in my HOSTS file to point to 127.0.0.1. I have Windows Firewall client which I have disabled. I have tried both adding this address into IE so that it does not go through ISA and also disabled this section altogether. When the website (which is actually IIS making the request to itself) tries to access the service layer I receive an ISA error that proxy authentication has failed. Considering that everything I can see to configure is set to not go through the proxy, ISA, I cannot see how this is actually going through the proxy and giving this error. Is there something within Windows 7 that forces the proxy setting, some sort of caching or similar?

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• WSUS setup on ADS Domain Controller VM

  - by NickC

  How should I setup sharing/directory permissions to allow the following to work: VMHost - Hyper-V partition (not part of domain) ADServer - Active Directory Domain Controller running as guest VM on VMHost \VMHost\Updates disk share for WSUS to put the updates and other local files Problem is what permissions do I need to give to \VMHost\Updates to allow WSUS to work with this directory to avoid "The WSUS content directory is not accessible" error which I am currently seeing. As far as I can tell WSUS runs as "domain/Network Service" account. Question is without adding VMHost to the domain how do I give that user appropriate permissions to this directory? Is there a way that VMHost can be told to trust ADServer and then be able to use users accounts from there? Sort of relates to my other post here: Win 2012 Domain controller VM, should the Hyper-V host be part of the domain? Thanks, Nick

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• hung up troubleshooting packet discards

  - by Chris Satola

  I realize my question is generic, but hopefully someone may have some guidance for me. My network consists of Cisco switches. I am seeing a significant amount (upwards of millions of packets per day) transmit drops between two switches. One being a 3750 and the other a 3560. The peak throughput of this link is only upper 400Mbps, so it shouldn't be a bandwidth issue. At this point, I am sort of clueless where to look or what tools I can use to determine what packets are dropping and why. I can setup a SPAN port on that link and wireshark it, but I don't know if that could tell me anything. Does anyone have any suggestions? Thanks in advance.

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• need recommendation for running PHP/Zend based optimizer

  - by senorsmile

  Firstly, I must admit that I don't know much about setting up PHP beyond the basics. I have an Ubuntu 10.04 server system (hosted) running primarily as an FTP store for a commercial store software. The server that the commercial store is installed on is unfortunately not very reliable, and would like to move that to this Ubuntu 10.04 server. (We've already received permission from the store vendor to do this.) My problem is that they use Zend optimizer which is only compatible with PHP 5.2. I have tried a couple of "hacks" to downgrade PHP to 5.2, but it breaks so many other things that it doesn't seem worth it. My idea is to install some sort of container of Ubuntu 8.04 (like OpenVZ) on the server to house a native install of PHP 5.2 to meet the dependency of the store software. However, it appears that OpenVZ is no longer supported on Ubuntu. Is there another solution similar that I could run on a hosted server to installed a separate "container-like" 8.04 system?

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• How does Outlook handle old recurring reminders?

  - by Zian Choy

  Context: Windows 7 Ultimate 32-bit edition Microsoft Office 2007 Outlook Steps to Reproduce: Make an event that recurs once a week. Wait a week. See that it pops up OK. Wait a month. Notice that it doesn't say that it is a month overdue. Expected Result: The usual note that the reminder is [x] weeks overdue. Actual Result: Something like "6 days overdue". Possible Excaberating Issue: I have many overdue reminders. For the ones that aren't time critical (and all other things being equal), I work by category and age. For example, I do health-related reminders when I'm doing health stuff; if I have 2 health-related reminders, I do the older one first. Big Question: How is Outlook supposed to handle this sort of overdue recurring reminder? Is there any way to get Outlook to act the way I expect it to?

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• Displaying Nagios on a 52" 1080p screen

  - by gdm

  I'm using a 52" 1080p LCD screen to monitor Nagios, positioned where most of the users can see it. Using the default Nagios web view sort of sucks, since you need to increase the text size a decent amount so it's legible from a distance, and then the "Current Network Status", "Host Status Totals", and other boxes along the top take up the majority of the screen realestate; you can't really see the list of host details. Is there a custom view for Nagios, or a plugin, or something available which is meant to display Nagios details on a large screen with large text?

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• PBX with Fax and Google Voice

  - by Phill Pafford

  Looking to replace/port my home number which I use for mainly faxing for my home business to a PBX server ( Thinking Asterisk or Elastix ). My question is: Does Asterisk/Elastix support Faxing ( Incoming / Outgoing ) Does Asterisk/Elastix support Google Voice Here is what I'm looking to do: Run some sort of PBX software from my own home server that will allow me to use Google Voice for my home number, possibly allow multiple Google voice ( Though I could live with just the one ) and must support Faxing ( Incoming and Outgoing ). Would Asterisk/Elastix support all of this or would you recommend something else for this? Looking to avoid some of the pitfalls that could happen I like Ubuntu if a Linux environment is needed

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• Graciously shutdown external HDD enclosure?

  - by Jakobud

  I recently purchased a large HDD along with the following HDD enclosure: http://www.newegg.com/Product/Product.aspx?Item=N82E16817173043 It has a simple on-off switch on the back. When I want to turn this thing off, do I simply just flip the switch? I assume the switch simply kills the power to the HDD, but isn't that potentially a bad thing in the case that the HDD is still reading/writing? I used to have a Seagate external HDD and it had a button on the front that I had to hold down for a second or two before it would turn off, but it at least appeared to sort of go through a shutdown procedure where it probably would stop the HDD activity before cutting power. So with this external HDD, I'm a little bit leery about that power switch and understanding exactly what it does. Is this how all HDD enclosures are? EDIT: I'm running the drive in Ubuntu Server. So there is no 'ejecting' the drive lol

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• Computer prints blank pages before and after content

  - by Cpt. Jack

  This would seem like a pretty simple question but I have exhausted every idea I can come up with. I bought a brand new Dell Latitude E5410 not too long ago with Windows 7 OS. I installed office 2010 on the machine right away and have had a printing problem since day one. For some reason every time I print a page, a blank page prints out before and after the content print. This also applies to any other application such as notepad or printing an email. If I have a 6 page document, it still prints out one page before and after every content page. Meaning I get my 6 page document along with 12 blank pages. I can't figure out why this would be some sort of default setting or what would cause this printing configuration. I am the only computer on the network that has this problem and quite frankly I'm getting tired of it. Can anyone help me figure this out or steer me in the right direction to correcting this problem?

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• How to generate an ASCII representation of a Unix file hierarchy?

  - by Jenn D.

  Hi, all. I'm looking for a quick and dirty way to generate some diagrams of some directories that have almost, but not exactly, the same hierarchy, so I can show them around at a meeting and we can decide which flavor we like best. I'm not interested in the "leaf" nodes, just the directories. The catch: I don't want to mess with X. This is a server system I deal with entirely through SSH. So I'm looking for something that will do ASCII layout, maybe with simple pipes-and-hyphens for lines or something. Does anyone know of such a utility? I'm sure I could write something myself, but it's such a fiddly little sort of project, with handling spacing and layout and such; I'd really like to discover that someone's done it for me. Alas, Google doesn't seem to know of such a thing...or if it does, it's hidden beneath heaps of excellent visual explications of the standard general Unix file hierarchy. Thanks!

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• Backup Dropbox to Amazon Glacier

  - by joekr

  i'm using Dropbox for Backup which means i keep all my files in my Dropbox folder (encrypted using encfs but that should not be relevant). I like this solution because it is automatic and keeps copies of my files on several machines at different locations. The only thing i could see go wrong is that Dropbox has some sort of bug that tells all my machines to delete the files. So currently i do a Backup of the Dropbox folder to an external Harddrive. With Amazon Glacier it seems affordable to automate Backup snapshots of my Dropbox. What i am looking for is a tool that will do this for me - the base case scenario would be that files would go from Dropbox (using their API) directly to Amazon as uploading the ~80GB from my home connection would take forever... Thanks!

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• What can I do to resolve a cng.sys error while booting?

  - by denonth

  I have been downloading all bunch of things using torrent and I have restarted my pc and now every time at booting I get BSOD with the following error: ( cng.sys ; 8C1ACB28 at 8C183000 DATESTAMP 4ec48143 error 0xc0000001 ) I was checking this error and it seems that I have some sort of malware on my PC. How can I achieve to connect to Windows? I have tried repair and it says that I can't repair it. I have tried to boot with all F8 options and still I get restarted with BSOD. I have installed other Windows version of Windows on other partition. My version of Windows which is corrupted is Windows 7 ultimate x86. EDIT:

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• Browser extension (or other software) to delay page load

  - by Doug Harris

  The alt text to today's comic at xkcd.com (strip below) says: After years of trying, I broke this habit in a day by decoupling the action and the neurological reward. I set up a simple 30-second delay I had to wait through, in which I couldn't do anything else, before any new page or chat client would load (and only allowed one to run at once). The urge to check all those sites magically vanished--and my 'productive' computer use was unaffected. (bold is my emphasis) Does anybody know of a browser extension or other software that will add this sort of delay? I've seen extensions which simply block sites, but not a delay like this.

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• Gather Outlook/Exchange connection Status responses from script

  - by mrTomahawk

  I'm trying to figure out a way in-which I can remotely gather Outlook = Exchange Connection stats from systems. I know I can have the users Right-click their Outlook icon in the system notification area, and then choose "Connection Status", but I'd really like to be able to poll this information without having to as the user to do anything. I saw this previous post, and I believe what he did is similar to what I'm trying to do we created a VB application that would pull user PTO information from a backend system and send out status emails to each of the users on a monthly basis but I'm trying to do it to gather the connection information from all my sites for certain parts of the day. Ideally I would like to do this via some sort of VBScript code since that is what I'm most familiar with, but I can work with Powershell too. My environment is all Exchange 2003 and Outlook 2003 clients.

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• multiple domains, one static IP address and latency

  - by shirish

  how is latency affected when multiple domains are using one single static IP address ? The scenario is in shared web-hosting By latency meaning the DNS lookup the client has to do. As far as I understand it, the browser would hit the root servers to try to figure out the IP Address and it belongs where and then when it comes to the correct server, it probably looks up some sort of table to determine which site names much and show that site as such via browser to the user. Is my understanding correct or backwards or what ?

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• How long will the serial port be around for?

  - by Andy

  It seems that the serial port has a remarkable ability to stick around. You might call it the hardware equivalent of Windows XP. Despite pretty much physically disappearing from laptops and the like, the need to use a serial port still exists, even if it means using a converter of some sort. It is very much a legacy piece of hardware, and yet so many devices and instruments still use it. I use it myself daily in my work with PLC's, HMI's, barcode readers, etc. In my opinion, I don't think it is going anywhere soon, but how long do you think it has got before joining the museum? Do you think it ever will?

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• would a dynamic wan disrupt a static lan?

  - by JohnMerlino

  So I found out that the cable company use the DHCP to assign the public ip address dynamically. So a subscriber's public facing ip address can change during the length of their subscription. Now what if you remove DHCP on a particular computer, which you plan to use as a web server, so that the machine has a static, unchanging IP address. If the public ip address was to change, would this confuse the Network Address Translation (NAT) and cause some sort of disruption? Please answer in layman terms, as I'm still grasping concepts here. thanks.

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• How do I make everything open in the internal editor in eclipse

  - by Draemon

  I'm using Galileo and plenty of file types work just fine (java, txt) but others open in an external editor. Double clicking on a .sh opens it in emacs. Double clicking on a .py opens bluefish. What sort of madness is this and how do I stop it? I don't want to make an association for each type explicitly; I just want everything to open in the internal editor by default (or preferably Eclim, but that's another issue). Any ideas?

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• Any worker agent monitors for appliance based load balancers?

  - by Zethris

  Looking to find out to what extent an appliance load balancer can monitor servers for both failover (say for example a service like apache tomcat fails) and load balancing? Right now it looks like it's just port monitoring/connection tracking and healthcheck urls that it will heartbeat and detect as down if it doesn't come back with a finished request. We are looking at the Kemp 3500 or Loadbalancer.org solutions. Is there any sort of web application level monitoring/load balancing that these load balancers can offer that can more directly interact with the servers it's balancing?

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• How to kick Jawbone ICON off iPhone to use with Mac

  - by SeniorShizzle

  I've got a Jawbone ICON, which is paired to my PS3, my Macbook Air, and my iPhone 4. Most of the time I'm using it with my Macbook with A2DP. The problem is that when I turn it on, my iPhone automatically connects to it, and hogs the A2DP profile, so then my Mac can't connect to the thing at all. I sort of like this behavior, so my best solution would be if there was some way to "kick" the ICONs connection to my iPhone from my Mac. It's really difficult because I use it alot with my Mac and my iPhone, so I can't delete one of the profiles, and I need to use A2DP on both devices. What are your suggestions on ways to fix this?

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• Hiding monitor from windows, working with it from my app only [closed]

  - by Mikhail

  I need to use a monitor as a "private" device for my special application, I want to use it as a flashlight of a sort and draw special patterns on it in full screen. I don't want this monitor to be recognized by OS (Windows 7) as a monitor. I.e. user should not be able to move mouse to that monitor, or change its resolution, or run screensaver on it or whatever. But I want to be able to interact with it from my application. Monitor is plugged using an HDMI cable to a video card (most probably nVidia). What is the simplest way to do this? All solutions are appreciated, including purchasing additional adapters or simple video cards, or any other special devices.

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