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• Disable writing RAID degraded mode

  - by jolivier

  I have a RAID5 with 5 disks on my machine and suspect the motherboard chipset to fail at some points and make my raid going in degraded mode. Last time it happened I noticed it on the failure of the 2nd drive connected to the same chipset and lost a lot of data. So I would like to prevent this, and especially I would like to have mdadm disable writes on the raid if one of the disk fails. So that in between I get notified, I recover and can use my system again. Sadly I could not find it in man mdadm so I was wondering if this is possible via a tool or hidden option since for me it looks like a standard feature of a RAID system. If this is not possible I would also be happy with a solution to stop the raid if degraded.

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• Let CGI-PHP load a non-default shared library.

  - by ralle

  In Apache2 I configured PHP as CGI in a virtual host: SetEnv PHPRC "/usr/local/php5.3" ScriptAlias /php5.3 "/usr/local/php5.3/bin" Action application/php5.3 /php5.3/php-cgi AddType application/php5.3 .php Everything works fine. Now I have some issues with the standard version of the GD because it restricts me in settings several hinting and anti-aliasing stuff for fonts. Therefore I want to modify the GD source and create a new shared library. Since I don't want a modifed library in my system I want only PHP to use that library. My question now: How can I change the Apache configuration in a way that PHP uses a certain new version of the library? Something like this does not work: ScriptAlias /php5.3 "LD_LIBRARY_PATH=/path/to/my/lib:$LD_LIBRARY_PATH /usr/local/php5.3/bin"

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• Is there a way to get Postfix to both forward an e-mail *and* reject it via recipient_address_rejected

  - by Mac

  In postfix, I'd like a way to deal with e-mail accounts that are no longer active by having postfix send the standard "Recipient address rejected" type message, but still forwarding the e-mail to another user. Thus, if someone sends an e-mail to [email protected], it will bounce the message back to the sender for future reference, but the mail will still get forwarded to [email protected] to deal with. .vacation and / or .forward files let me down because they will either reply or forward, but not both. Any tips?

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• 4K sectors transition: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors?

  - by Chris W. Rea

  I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the long-standing standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

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• Block (or only allow certian) incoming IP addresses on Verizon FIOS Actiontec Router

  - by jmlumpkin

  I opened a few ports to the outside of my home network so I can get into a few of my machines from outside. When checking some logs, I noticed that I was getting scanned on some ports from various other countries. I already moved my port forward to a non-standard port. I would like to be able to block specific IP's (or even subnets) from my Verizon FIOS router. There is a little bit of documentation online, but I can't find anything specific on how to do this. To start, I just want to block a specific IP. But if it is not to hard, I would also like to know how to possibly block a range of IPs. And with the inverse of this - is there a way to allow only certain IPs or range?

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• Dynamic authentication realms in Apache

  - by Cogsy

  I have a front end server acting as a gateway proxy for many (a dynamic 'many') building monitors with embedded webservers. They are accessed with a URL like: http://www.example.com/monitor1/ http://www.example.com/monitor2/ ... I'm trying to restrict access to these monitors to only the users that own them. So what I need is a way of specifying rights to users or groups for specific directories. The standard auth mechanisms I see in Apache won't work because I need to specify every location. I'd prefer some dynamic map or script. Any suggestions?

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• Install SQL Server 2000 on virtual machine Windows Server 2008 (HyperV)

  - by podosta

  Hi, My hierarchy ask me to setup a production Windows server 2008 virtual machine (HyperV) with SQL 2000 Standard Ed. installed on it. I can't find on the net much information about the relative "compatibility" of SQL2000 on WinSrv2008. Of course I found some obscure answers like : "it's impossible, it's not supported, don't do it". I already setup the machine, it's working, but... I don't know where I'm going. Do you experienced this kind of configuration ? Could you give me some advices ? Could you tell me the pros and cons ? Thanks a lot for you help

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• OS X: How to create a user account with access to the applications that she has installed only.

  - by pmurillo

  Till now, I've been the sole and proud owner of an iMac. I've always logged in as an administrator and I've also installed a bunch of software following the standard procedure of dragging and dropping it into the Applications folder. This is about to change, as sharing it with a friend makes a lot of sense now that I only have time to use the computer in the mornings, and she can only use it at nights. I thought this was going to be really easy: Just create a user account for her and that's all, I thought. Unfortunately, this is not the case. When she logins into the computer using her username and password, she has access to the same applications I've installed. Even the same applications that I setup to automatically start when I login start for her when she does. How can I setup a user that has only access to the applications that she has installed, but none of the ones installed by other users? Many thanks

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• useful JMX metrics for monitoring WebSphere Application Server (and apps inside it)?

  - by Justin Grant

  When managing custom Java applications hosted inside WebSphere Application Server, what JMX metrics do you find most useful for monitoring performance, monitoring availability, and troubleshooting problems? And how do you prefer to slice and visualize those metrics (e.g. chart by top 10 hosts, graph by app, etc.). The more details I can get, the better, as I need to specify a standard set of reports which IT can offer to owners of applications hosted by IT, which those owners can customize but many won't bother. So I'll need to come up with a bunch of generally-applicable reports which most groups can use out-of-the-box. Obviously there's no one perfect answer to this question, so I'll accept the answer with the most comprehensive details and I'll be generous about upvoting any other useful answer. My question is WebSphere-specific, but I realize that most JMX metrics are equally applicable across any container, so feel free to give an answer for JBoss, Tomcat, WebLogic, etc.

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• Controlling TV Channel Through Computer

  - by killianmcc

  I'm passing my TV input through my computer so that I can use the video stream in an application I'm creating which then outputs to my TV. E.g. Sky Digibox/FreeView box - Laptop - TV Where on my laptop I'll be using the stream in a WPF application so I can overlay XAML objects onto it. My question is, what would be the best way for me to send the signal back to the box to say change the channel for example? I don't want to have to use the remote, I want the computer to handle everything. Is there a standard cable these boxes have that could take what would normally be a remote control signal and use that as input instead? Or would I have to go down the route of looking at some sort of Infared LED to send the signal recreating the remote? Apologies if this is not clear enough, let me know and I'll try and be more precise.

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• howt setup remote access into computer behind 2 routers?

  - by Steve Wasiura

  I can setup remote access to a pc behind a single router/firewall by using NAT and Port Forwarding, simples! But there is a customer that shares an internet connection with another office, and they are behind a second router firewall. I drawed a picture with my crayons but I can't attach it because I'm a new account on SF. see it here: http://i.imgur.com/b3FDx.png So how would I setup remote access to the pc that is beind the second firewall? It must be something about static routes, i.e. if I hit the wan ip on port 4905 I want it to forward it to 10.0.0.30 by going through 192.168.1.10 so a route statement like for all requests to 10.0.0.30, use 192.168.1.10 ? and ass u me router 2 has a static gateway ip of 192.168.1.10 and need a standard NAT on router 2 to point port 4905 to 10.0.0.30 is this the right way, any tips? both routers are netgear consumer equipment. thanks

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• Maximum hard drive space for an Xserve G5

  - by wjlafrance

  At my college we're upgrading an Xserve G5 (RackMac3,1) to be a file server for some courses. Currently it has one sled with a 75GB drive. Obviously, this isn't enough. I've tried some Googling on this matter and I'm hearing a ton of different stuff - custom firmware, size issues, etc. So, for anyone who knows, what's the actual lowdown on this machine. We want to put in three 2TB drives using three standard sleds, replaced with third-party drives. Is this possible?

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• Export policy configuration from eTrust ITM 8.1

  - by grub

  Hi everyone. Currently we are using the Enterprise AV Solution eTrust ITM 8.1. The licenses are running out in october and we are going to replace eTrust with another AV solution. The eTrust Server is running on Windows Server 2003 SP2 with an MS SQL 2000 Standard Edition. The problem is that we've got many different policy - sets which we have to redefine in the new AV solution. Is there any way with eTrust ITM 8.1 to export the different policies as csv, pdf ... whatever? I really dont want to do that manually (that would mean one print screen after the other ;-) ) Thank you very much. grub

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• Cloud hosting and single hardware point of failure?

  - by PeterB

  From talking to sales I thought Rackspace Cloud was running on a SAN and compute nodes (as VMWare's offerings do), only to find out it doesn't, so when the host server goes down for maintenance all cloud servers on the server go down (in our case for 2.5 hours). I understand Amazon EC2 also has this single-server point of failure. Which cloud hosting solutions don't rely on a single server? I've yet to find a list by architecture Is there a term that distinguishes between these types of 'cloud'? Is one of these 'grid computing' and the other 'virtualisation'? Can a SAN backed solution provide the same reliability as 2 mirrored cloud servers on (say) Rackspace Cloud? I am more familiar with the VMWare architecture and would like to understand the advantages and disadvantages of each approach. I understand the standard architecture is to have multiple cloud servers and mirrored data between them; until we need multiple database servers I'm wondering if a SAN/node hosting solution would provide the lack of downtime we need without the added complexity.

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• Can't resolve Mac's machine name on VPN

  - by Raghuveer

  My mac'c machine name is something like this: hostname.company.com but whenever I connect to VPN, it becomes something like vpn-xxxx.company.com where xxxx are some random numbers. Because of this, some of my scripts which are dependent on host name gets blocked. We use the standard mac's vpn setup which comes with OS X Lion (under network preferences). How can I resolve to the correct mac's name even if I am on vpn ? That is even if I am connected to VPN, my machine name should resolve to hostname.company.com and NOT to vpn-xxxx.company.com. Any suggestions would be really appreciated.

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• Make words look like keystrokes in Microsoft Word

  - by techturtle

  Is there an easy way in Microsoft Word 2010 to make words appear like keystrokes the way we can here in Superuser? Something like this: Ctrl + V I know that <kbd> is an HTML tag, but in normal HTML that just switches to a fixed-width font. In fact, that's how Word treats it if you paste something from SU into a Word doc: If there's not a standard way to do this in Word, is there a free font that might accomplish the same thing? I thought I'd seen some before but couldn't find any at the regular places I find fonts (dafont.com, fontspace.com).

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• What is the best file system to use for a second hard drive when dual booting between WinXP and Win7

  - by Corey

  I am dual booting for legacy reasons, and I have a 2nd internal drive that I would like to use from both XP and 7. Should I go with the standard NTFS? (will the secuirty features be an issue, with different SIDs from the different users) Should I go with FAT32? Should I try out the new exFAT? Also, I curently have two of my 3 drives as "dynamic disks" and 1 spaned volume created on them. (i did this from XP) Win7 can see them/it fine. Is this an ok thing to do?

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• What is the best file system to use for a second hard drive when dual booting between WinXP and Win7

  - by Corey

  What is the best file system to use for a second hard drive when dual booting between WinXP and Win7? I am dual booting for legacy reasons, and I have a 2nd internal drive that I would like to use from both XP and 7. Should I go with the standard NTFS? (will the secuirty features be an issue, with different SIDs from the different users) Should I go with FAT32? Should I try out the new exFAT? Also, I curently have two of my 3 drives as "dynamic disks" and 1 spaned volume created on them. (i did this from XP) Win7 can see them/it fine. Is this an ok thing to do?

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• Running JBoss 6 with Runit / daemontools or other process supervision framework

  - by Alex Recarey

  I'm tying to use runit to daemonize JBoss. I use the /opt/jboss-6.1.0.Final/bin/run.sh script to start the server. When I do so from the comandline, JBoss does not detach (which is what we want), and will also shut down when CTRL+C is pressed. In theory a perfect candidate to use runit on. Everything works fine except when I try to get runit to shut down JBoss. When I issue the command sv stop jboss nothing happens. Runit thinks the process is stopped but jboss continues to run normally. I'm not doing anything special with the run script. This is my runit run script: #!/bin/sh exec 2>&1 exec /opt/jboss-6.1.0.Final/bin/run.sh -c standard -b 0.0.0.0 Looking at the jboss_init_redhat.sh script, the start section does mention ./bin/run.sh but the stop section has the following text: JBOSS_CMD_STOP=${JBOSS_CMD_STOP:-"java -classpath $JBOSSCP org.jboss.Shutdown --shutdown"} Any ideas of what I could try?

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• Seeing double-cursor in 'recursive RDP'

  - by John

  I'm using a Virtual PC VM on my PC to connect to a remote PC using RDP over a VPN. It works just fine except that in the RDP session, I often see a double mouse cursor... I get a standard mouse-arrow and the context-specific cursor such as a caret or hourglass. It's not a big problem but rather annoying and I wondered if there's any way to fix it, or at least understand where it comes from? Is it because I'm effectively running one RDP session from inside another? My host PC runs W7, my local VM runs XP, and the remote PC access using RDP is W7. Thankyou for any help.

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• Windows 8 Permissions

  - by Dane Balia

  I, 2 days ago, completed a standard Windows 8 installation. It was a fresh install, however Windows 7 was on the disk prior to which it migrated to Windows.old. But for some strange and weird reason, I am struggling to 'write' to my disk in regards to .NET Applications. It appears that none of my .NET (self-written) applications can write to their log files on disk, which are created on startup. I have disabled UAC, as well as set Full Control over Disk C: for my User, but no luck. I keep getting the error: A required privilege is not held by the client. I did google and try some online tuts - but no luck! Thanks

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• KVM Switch for a mac and a Windows (XP or 7) machine to share VDU

  - by Adrian Parker

  Have a MacPro (snow leopard) connected to an (windows standard) Asus 25" monitor via a DVI--VGA adapter. Now the boss wants me to work from home, so I want to share my Asus display with a Windows XP laptop. No doubt once my wife sees this, she will want to do the same thing, but with a Windows 7 laptop. So what I would like, I think, is your recommendations for a KVM switch (or better solution) that allows the Mac and a (windows 7 or windows xp) laptop to share the Asus display. Bonus marks if they can share Apple keyboard and magic mouse, but am quite happy to use separate mouse keyboards. The MacPro is the one that is always connected, the laptops come and go. Any ideas? Thanks in advance for any help.

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• Amazon - install a complete server on EBS

  - by user1169575

  is it possible to install a full working OS with a webserver, db, and all needed stuff on an EBS storage? If so, would I immediatly gain benefits by mounting this EBS on a better instance? Otherwise (if I cannot install a complete image, or if you don't think it's reasonable) can I install the software so that I only need to mount the EBS on a new instance to have it working? I purchased a Medium Reserved Instance, but when there will be the need to get a better instance I'd like to move the whole db/website, I'd simply buy a better instance and then attach the EBS. Is it possibile? I'm imaging about it like an hard drive that would be mounted on a better server. Of course, more RAM would allow me to increase caching limits, and that's ok, but I don't want to reinstall anything (the main website is a magentocommerce and it's pretty painful to move it). P.S. is the Standard EBS (100 IOPS) valid or do I need to choose a Provisioned IOPS (up to 1000 IOPS)?

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• Set up router to vpn into proxy server

  - by NKimber

  I have a small network with a single LinkSys router connected to broadband in US via Comcast. I have a VPN proxy server account that I can use with a standard Windows connection, allowing me to have a geographic IP fingerprint in Europe, this is useful for a number of purposes. I want to setup a 2nd router that automatically connects via VPN to this proxy service, so any hardware that is connected to router 2 looks as though it is originating network requests in Europe, and any hardware connected to my main router has normal Comcast traffic (all requests are originating from USA). My 2nd router is a LinkSys WRT54G2, I'm having trouble getting this configured. Question, is what I'm trying to do even feasible? Should the WRT54G2 be able to do this with native functionality? Would flashing it with DD-WRT allow me to achieve my objectives?

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• gmail download by POP3 won't download all emails. How to reset all emails to not downloaded so that ALL will download?

  - by Rob

  I want to download emails from gmail using POP3 with Outlook Express. It downloads about 350 or so emails but doesn't download the remainder - there are over 2000 emails. The emails downloaded are not recent. I've tried disabling and re-enabling POP options in the settings in gmail itself but this doesn't fix the issue. Any ideas? Failing that I would use IMAP. I would try to then copy it locally on my machine to the standard POP Inbox folder in Outlook Express so that Express Archiver (a separate program) can then archive each email as a file with meaningful file names (e.g. subject, sender). I want to download email because I archive back it up with project work material it relates to, so it is all in one place.

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