Daily Archives

Articles indexed Tuesday February 22 2011

Page 1/14 | 1 2 3 4 5 6 7 8 9 10 11 12  | Next Page >

• SilverlightShow for Feb 14 - 20, 2011

  - by Dave Campbell

  Check out the Top Five most popular news at SilverlightShow for Feb 14 - 20, 2011. Way ahead of all other news for the week, in terms of popularity, is the news on the latest Silverlight 4 runtime update. Here are the top 5 news on SilverlightShow for last week: Silverlight 4.0.60129.0 GRD3 Runtime update KB2495644 FloatingWindow v1.2 — multi-windows interface for Silverlight 4 Silverlight MVVM Commanding II Upcoming SilverlightShow Webinar: 'Switch or no switch: Can I build my business apps in LightSwitch?' Kinect and WPF: Painting with Kinect using OpenNI Visit and bookmark SilverlightShow. Stay in the 'Light

  Read the article

• hosting database on separate server

  - by Amit Aggarwal

  Hello Experts, We have an enterprise web app to which our clients post/upload lots of documents [mainly images and pdf files] via web interface, iphone app etc etc. We are also using imagick to split pdf documents into images. Also, large number of mysql SELECT/UPDATE/DELETE queries happen all day. Currently, all of this is happening on same server and we are planning to split the process in 3 stages : 1) a server only for database 2) a server only for documents (document upload, splitting etc) 3) a server for the main php web app Is there any drawback with this kind of structure as compared to hosting everything on same server ? Please guide. Thanks, Amit

  Read the article

• Virtualbox Headless Server on Ubuntu missing VRDP Options

  - by The Daemons Advocate

  I'm running VirtualBox headless server on an Ubuntu 64 bit host, and I want to use it remotely. However, I'm having problems connecting via RDP. The DNS names in my network show the host to be 'server', and the guest to be 'ubuntu-vm'. From the official documentation, I gather that I am to connect to server on the default RDP port in order to see the guest machine. I start the virtual machine like so: vboxheadless -startvm My_VM Then I connect on my laptop, and I get... rdesktop -a 16 server ERROR: server: unable to connect So next I consult the documentation further, and I find there are RDP flags that can be turned on (but should be on implicitly for a headless server). So I pull up information using 'vboxmanage showvminfo My_VM', and I find the VRDP property is off. VRDP Connection: not active To make things even weirder, RDP flag seems to be missing from vboxmanage. I've installed straight from the ubuntu repo's using the virutalbox-ose package, not sure how that measures up against the official docs. For instance, this command doesn't exist: VBoxManage modifyvm My_VM --vrdp on From the UI, the VM's Settings regarding Display have greyed out the 'remote Display' option. What I'm looking for is advice :). I'm open to suggestions that don't involve starting again with something like VMWare. Thanks in advance!

  Read the article

• Is Windows Server 2008R2 NAP solution for NAC (endpoint security) valuable enough to be worth the hassles?

  - by Warren P

  I'm learning about Windows Server 2008 R2's NAP features. I understand what network access control (NAC) is and what role NAP plays in that, but I would like to know what limitations and problems it has, that people wish they knew before they rolled it out. Secondly, I'd like to know if anyone has had success rolling it out in a mid-size (multi-city corporate network with around 15 servers, 200 desktops) environment with most (99%) Windows XP SP3 and newer Windows clients (Vista, and Win7). Did it work with your anti-virus? (I'm guessing NAP works well with the big name anti-virus products, but we're using Trend micro.). Let's assume that the servers are all Windows Server 2008 R2. Our VPNs are cisco stuff, and have their own NAC features. Has NAP actually benefitted your organization, and was it wise to roll it out, or is it yet another in the long list of things that Windows Server 2008 R2 does, but that if you do move your servers up to it, you're probably not going to want to use. In what particular ways might the built-in NAP solution be the best one, and in what particular ways might no solution at all (the status quo pre-NAP) or a third-party endpoint security or NAC solution be considered a better fit? I found an article where a panel of security experts in 2007 say NAC is maybe "not worth it". Are things better now in 2010 with Win Server 2008 R2?

  Read the article

• SNMP based network discovery (switches), device (ports on switches) power management

  - by SaM

  In a enterprise network, what would be the right way to generate a list of switches (SNMP managed) Is it reasonable to ask the organization to supply a list such as this: Switch name IP Address of switch Location SNMP community strings Or are there standard ways to run discovery scans - UDP broadcasts? After having generated a repository such as the above; given a single switch, how to query it for the list of all devices attached to it? Finally, how to selectively power down/power up ports? (remotely - using SNMP) Platform is going to be .NET based (C#) and the library being used is SharpSNMP

  Read the article

• raid md device is not remove from memory, how to overcome this problem

  - by santhosha

  i create raid 10 , i removed two arrays form md11 one by one , after that i going to editing the contents those are mounted ( it will be not responding stage), after i try for remove arrays those are left it is shows device or resource busy ( is not removed from memory). i try to terminate process this is also not work, i absorve from 4 days resync will be 8.0% it can not modifying. cat /proc/mdstat Personalities : [raid1] [raid0] [raid6] [raid5] [raid4] [linear] [raid10] md11 : active raid10 sde1[3] sdj14 286743936 blocks 64K chunks 2 near-copies [4/1] [___U] [1:2:3:0] [=...................] resync = 8.0% (23210368/286743936) finish=289392.6min speed=15K/sec mdadm -D /dev/md11 /dev/md11: Version : 00.90.03 Creation Time : Sun Jan 16 16:20:01 2011 Raid Level : raid10 Array Size : 286743936 (273.46 GiB 293.63 GB) Device Size : 143371968 (136.73 GiB 146.81 GB) Raid Devices : 4 Total Devices : 2 Preferred Minor : 11 Persistence : Superblock is persistent Update Time : Sun Jan 16 16:56:07 2011 State : active, degraded, resyncing Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Layout : near=2, far=1 Chunk Size : 64K Rebuild Status : 8% complete UUID : 5e124ea4:79a01181:dc4110d3:a48576ea Events : 0.23 Number Major Minor RaidDevice State 0 0 0 0 removed 1 0 0 1 removed 4 8 145 2 faulty spare rebuilding /dev/sdj1 3 8 65 3 active sync /dev/sde1 umount /dev/md11 umount: /dev/md11: not mounted mdadm -S /dev/md11 mdadm: fail to stop array /dev/md11: Device or resource busy lsof /dev/md11 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME mount 2128 root 3r BLK 9,11 4058 /dev/md11 mount 5018 root 3r BLK 9,11 4058 /dev/md11 mdadm 27605 root 3r BLK 9,11 4058 /dev/md11 mount 30562 root 3r BLK 9,11 4058 /dev/md11 badblocks 30591 root 3r BLK 9,11 4058 /dev/md11 kill -9 2128 kill -9 5018 kill -9 27605 kill -9 30562 kill -3 30591 mdadm -S /dev/md11 mdadm: fail to stop array /dev/md11: Device or resource busy lsof /dev/md11 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME mount 2128 root 3r BLK 9,11 4058 /dev/md11 mount 5018 root 3r BLK 9,11 4058 /dev/md11 mdadm 27605 root 3r BLK 9,11 4058 /dev/md11 mount 30562 root 3r BLK 9,11 4058 /dev/md11 badblocks 30591 root 3r BLK 9,11 4058 /dev/md11 cat /proc/mdstat Personalities : [raid1] [raid0] [raid6] [raid5] [raid4] [linear] [raid10] md11 : active raid10 sde1[3] sdj14 286743936 blocks 64K chunks 2 near-copies [4/1] [___U] [1:2:3:0] [=...................] resync = 8.0% (23210368/286743936) finish=289392.6min speed=15K/sec

  Read the article

• Ubuntu virtual memory caches suck up memory

  - by Tom

  Hey all, I've got an Ubuntu 9.10 64-bit server that seems to use up all available memory. According to my munin graphs, almost all of the memory used up is in the swap cache, cache, and slab cache. (I take this to mean virtual memory caches, am I right in assuming this?) Once memory usage approaches 100%, some (although not all) system services such as SSH become sluggish and unresponsive. After rebooting the system, performance and memory usage become normal for a time. Some interesting tidbits: The system runs Apache 2, MySQL, Munin, and sshd. The memory usage spikes happen at the same time every night (at 10 PM sharp.) There appears to be nothing in the crontab for any of the users, and nothing in /etc/cron.d/* out of the ordinary, let alone something that would occur at 10 PM. My question is, how do I figure out what is causing the memory suckage? I've tried the usual utilities (e.g. ps, top, etc) but I can't seem to find anything unusual. Any ideas? Thanks in advance!

  Read the article

• IMAP proxy as a POP3 hub?

  - by mailman stan

  Simple scenario, complicated technology: One family receiving mail from five email addresses via POP3 into one Outlook inbox on a single PC. Now we'd like to be able to replicate that single inbox across multiple devices (eg. desktop PC, laptop, netbook, smartphone). If we continue using POP3 as the mail transfer protocol, messages will be downloaded to one device and will not be visible to the others; replies will likewise be isolated on the sending machine. If we switch to IMAP, I understand that we can have multiple devices maintaining a shared view of an inbox hosted at the server end, but what about multiple accounts? I tried changing the account configuration in Outlook to fetch from the mail providers' IMAP service instead of POP3, which does give a shared view across multiple devices but also causes Outlook to create a separate inbox and PST for each account. This is awkward because it means there are five separate folders that need to be checked, and Outlook tools like search filters and rules don't seem to work across accounts. To get what I want (five accounts delivered into one shared mailbox) it seems that I would need some sort of intervening server that collects mail (using POP3) from all our accounts into a single inbox while preserving the original destination addresses, and then serves it up to all our devices using IMAP. Is this workable? Is it a good approach? Is there an easier way?

  Read the article

• HTTP gzip compression not working for css or javascript in tomcat 6

  - by Draemon

  Connector settings: <Connector ... compression="2048" noCompressionUserAgents="gozilla, traviata" compressionMimeType="text/html,text/xml,text/plain,text/css,text/javascript"/> This seems to work for html, but not for css or javascript. compression="force" does work, but compression="on" doesn't. compression="2" doesn't work either, so I don't know what "force" is really doing. The files in question are about 6k, I've cleared the browser cache, etc.

  Read the article

• Allow only certain files to be exposed to the web on Lighttpd?

  - by darkAsPitch

  Just installed it on my linux desktop, and I only want 1 or 2 files accessible to the outside world. Everything else should only be accessibly via http://localhost/ for various privacy/security reasons. It is just a test server, don't want just anybody accessing my large batch files. How would you go about allowing only certain select files access to the internet and making everything else available only via http://localhost/?

  Read the article

• Mac Mini server (10.6) behind router with FQDN hostname

  - by thechriskelley

  I have a Mac Mini running Mac OS 10.6.6 Server that will be part of a local network, and a static IP from my ISP. I'd like to set up DNS for the Mini with a FQDN as the hostname (example.com) properly. The Mini is behind a router (Apple Airport Extreme) and is given a private, static IP address. I can't assign it the public static IP directly because it's behind a router with DHCP/NAT for other machines on the local net. My end goal here is for services to resolve to the server properly from outside and inside the local network to users via example.com (and subdomains like mail.example.com, www.example.com), which will point to the public static IP assigned to the router. Will DNS work/resolve properly (for mail services and other subdomains) if it has a private ip address, but the necessary services are forwarded properly through NAT? I'm open to any (hopefully better) suggestions, as my current setup doesn't seem like it's the best way. Currently, more hardware or another public static IP is not possible. With the current setup, it seems as though one static IP is not necessary anyway. Thanks in advance for any insight.

  Read the article

• ZFS + FreeBSD + virtualbox

  - by John

  Hi, I'm configuring a FreeBSD server hosting virtualbox serving half dozen mission critical busy mail servers. I just learned ZFS, I'm quite attracted, but have a few questions: what is the CPU overhead of ZFS? I googled and found little (or no) benchmark for that. from what I learned, when ZFS updates files, it keeps the old file as snapshot, and write the updated part for the new version. However that would mean for each snapshot it keeps that require significant storage overhead. How much is this storage overhead? For example, suppose I have 2TB usable space, how much space can actually be used for the latest version of files one year later? is FreeBSD with ZFS hosting virtualbox serving half dozen busy guest mission critical mail servers a reasonable combination? Anything particular to be careful with? And can I still choose ZFS for the guest OSs? This is because I may build another identical such box for redundancy, and will need to do some mirroring between each pair of the guest systems across the boxes. I'm trying to configure a Dell R710 for this. From what I learned, I shouldn't choose any RAID at all, is that true? In that case, are the drives still arrive hot swappable? this may sounds a bit pathetic, but since I have no experience with ZFS at all, and this is a mission critical server, so just ask just in case: I'm choosing twin Intel L5630 processors, and 6 x 600GB 15K RPM Serial-Attach SCSI drives. If I need more space in the future, I would just hot swap some drivers with larger capacity to expand the storage. There is no problem with these, right?

  Read the article

• Strange behaviour of Apache with network drive

  - by AMIT

  Hii all, Am runnnig Apache web server in front of mongrel server and mapped a network drive on my system.In my application miongrel is doing file upload to network drive and apche is serving file from network . But i disconnected the network drive and what strange behaviour am getting still am able to uplaod as well as download files to and from network drive .could anyone tell me why is it so. Am on windows NT machine

  Read the article

• Smart card / auditable access for rack KVM tray

  - by Mark Henderson

  Is there such a thing as a KVM Tray for a standard 19" rack whose use can be validated by a smartcard (or some other auditable authentication method)? It looks like we have a security requirement where just because users have a key to the rack doesn't mean they will be allowed to use the console inside the rack, and rather than just lock the console (and keep track of who has keys), we would prefer to be able to audit the actual user that was attached at the KVM. (It's worth mentioning that I'm aware of the Raritan devices, but they surely can't be the only ones) (If these things existed, I don't think half of the tratoirs that somehow manage to infiltrate CTU on the TV show 24 would ever get away with anything)

  Read the article

• Why does my computer slow down after being on too long?

  - by RoboShop

  I'm sure everyone has experienced it - if you leave a computer on too long, every once in a while, it needs a fresh reboot. I have a laptop, and I only hibernate it, but every week or two, I'm going to need to restart otherwise it will just slow down (usually when windows update makes me restart) I was wondering though... why? What are some of the things that occur that eat up memory that can seemingly not be freed unless I reboot the OS. In addition, are there any programs I can get that can free up this memory and keep the computer alive for longer? Preferably for windows 7.

  Read the article

• Prevent gnome from automatically mounting partition when clicked in nautilus

  - by bjarkef

  Hi, I have two partitions on a hard drive in my machine that are formatted as ntfs, but must under no circumstance be mounted by my Ubuntu installation (unless I do some preparation first). However nautilus happily displays the partitions, and a single click will mount them automatically. This is very dangerous behaviour, how can I hide the partitions from nautilus and prevent accidentally mounting them by a single stray mouse click? Thanks

  Read the article

• Apache directory structure with multiple hosted languages.

  - by anomareh

  I just got a new work machine up and running and I'm trying to decide on how to set everything up directory wise. I've done some digging around and really haven't been able to find anything conclusive. I know it's a question with a variety of answers but I'm hoping there's some sort of general guidelines or best practices to go by. With that said, here are a few things specific to my situation. I will be doing actual development and testing on the same machine as the server. It is a single user machine in the sense that I will be the only one working on the machine. There will be multiple hosted languages, specifically PHP and RoR while possibly expanding later. I'd like the setup to translate well to a production environment. With those 3 things in mind there are a couple of things I've had in the back of mind. Seeing as it's a single user machine I haven't been able to decide whether or not I should be working on things out of my home directory or if they should be located outside of it. I'm feeling that outside of a user directory would be better as it would translate better to a production environment, but I'm also not sure if that will come with any permission annoyances or concerns seeing as I'll be working on the same machine. Hosting multiple languages seems like it may be a bit quirky. With PHP I've found you're generally just dumping the project somewhere in the document root where as something like a Rails app you have the entire project and you only want the public directory in the document root. Thanks for any insight, opinion, or just personal preference from experience anyone can offer.

  Read the article

• How can I prevent static when PC is plugged into an amplified speaker system?

  - by Kyle

  I've plugged a computer into an amp, using a 1/8 inch male extension cord, into a female adapter, that adapts into a male microphone 1/4 end. That being said, the amp sits at about half volume all the time because there are other things that play on it. (This issue is not flexible, nor is changing the amp) The problem is that now, even when I mute out the computer, you hear some static in the background. I was wondering some about some solutions (preferably multiple).

  Read the article

• Will increasing RAM improve Lightroom 3 large tiff loading times

  - by andy

  Set up: mid 2009 17" unibody MacBook Pro 4GB RAM 2.66 Core 2 Duo Snow Leopard 10.6.6 Lightroom 3 When working with 12 MegaPixel RAW files from a Nikon D700, no problem. Lightroom is fine. Recently I've been scanning film and they result in large tiff files, about 130mb each. The tiff files themselves are good, and I'm happy with my scanning workflow. Working with these files in Lightroom is perfectly fine, except for one step. When I choose one of these photos in the Develop module, Lightroom displays the "Loading" on the image for about a minute or two, which is quite long. Once the image is loaded, then everything is fine again, and applying effects is instant. So my only issue is reducing that "loading" time in the develop module (the library module is fine too). Will increasing my RAM to 8GB help? I'm worried about spending the money and it not making any difference. thanks andy

  Read the article

• System randomly Crashing

  - by Hailwood

  Hi guys, Computer is running windows XP. seems to be crashing randomly, no pattern in its timing or activity to cause it. What could be causing this/how do I diagnose this? Event log shows Event Type: Error Event Source: System Error Event Category: (102) Event ID: 1003 Date: 22/02/2011 Time: 7:10:05 p.m. User: N/A Computer: YOUR-8ABC512DA0 Description: Error code 1000008e, parameter1 c0000005, parameter2 bf801b50, parameter3 ee118c44, parameter4 00000000. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: 53 79 73 74 65 6d 20 45 System E 0008: 72 72 6f 72 20 20 45 72 rror Er 0010: 72 6f 72 20 63 6f 64 65 ror code 0018: 20 31 30 30 30 30 30 38 1000008 0020: 65 20 20 50 61 72 61 6d e Param 0028: 65 74 65 72 73 20 63 30 eters c0 0030: 30 30 30 30 30 35 2c 20 000005, 0038: 62 66 38 30 31 62 35 30 bf801b50 0040: 2c 20 65 65 31 31 38 63 , ee118c 0048: 34 34 2c 20 30 30 30 30 44, 0000 0050: 30 30 30 30 0000

  Read the article

• Setting up a wireless network with Verizon MiFi

  - by winarm

  I am trying to set up a home network. I live in a location without cable internet so I have a Verizon MiFi card. I have a few laptops at the moment and they each connect through the card but I want to set up an Ubuntu 10.10 server and see if I can use it for DHCP. I have a Trendnet TEG-S50G switch and the computer I plan to use for the server has a Linksys WMP-11 Wireless PCI card. Is there any other equipment I need in order to get this to work? Is this even doable? Is there a better way to make this happen?

  Read the article

• Best MTA setup for home or laptop computers - not server

  - by thomasrutter

  Hello, What is a good MTA (e.g. Postfix or something else) setup for a home computer behind a NAT, or a laptop that connects to various different wifi networks? I've read a lot of Postfix tutorials on how to set it up this way or that, but they are usually geared towards computers that are servers ie they have a static IP have a domain name are always connected to the same network My requirements are, I guess: Ability to forward mail for "root" to another server of my choosing. No listening for incoming SMTP connections - outgoing only Ability to route outgoing mail via an external SMTP server with authentication (and perhaps encryption) If not Postfix, I need an MTA which can queue up mails in case it temporarily has no internet connection.

  Read the article

• Can't connect to LAN when connected to D-Link DIR-615

  - by Senseful

  I'm have a D-Link DIR-615 Wireless N 300 Router. I didn't use the CD it comes with to set up the network. Instead I configured it manually through the router's settings that are accessed via a web browser. The main changes I made are: Secured the router so that a password is required before clients can use the wireless internet. Broadcasting 802.11N only (not B or G). I can connect to the router just fine and I'm able to access the internet. The only problem is that I don't see any of the other computers in my LAN. When I try connecting to another Wi-Fi router that I have (which is connected to the same network), I can see all of the computer's on my LAN just fine. Therefore, I'm guessing that the reason I can't connect to the LAN is not a problem with my computer and is a problem with the router instead. I'm on a MacBook Air running Mac OS X 10.6.6. I tried contacting D-Link technical support, but they only try to help you if you have problems connecting to the internet. They aren't really concerned with problems that have to do with the accessing PC's on the same network.

  Read the article

• https post message fail, where is server log?

  - by Samson

  I am receiving an error when sending a https post message to my server and I am looking to get more information. I am looking for ssl error log in apache but I cannot find it. I have looked in /usr/local/apache/logs/secure and I don't see the proper error. Should I be looking in a different place? UPDATE: Fyi, the connection is timing out or being lost when I use https and I am trying to figure out why. When I use http it works fine.

  Read the article

• How to run inetd daemon on Cygwin?

  - by WilliamKF

  I want to get inetd daemon working on a machine running Cygwin. I know how to do this on Centos 4, but on Cygwin it does not seem to work. Commands I tried are: cygrunsrv -I xinetd -d "Cygwin Xinetd" -p /usr/sbin/xinetd -e CYGWIN=ntsec cygrunsrv -S xinetd /etc/rc.d/init.d/xinetd start On Linux, I would just do: /sbin/service xinetd restart After editing my configuration file: /etc/xinetd.d/<myAppHere> I've created this file on Cygwin, but can't seem to figure out how to start the service.

  Read the article

1 2 3 4 5 6 7 8 9 10 11 12  | Next Page >