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• How to make AD highly available for applications that use it as an LDAP service

  - by Beaming Mel-Bin

  Our situation We currently have many web applications that use LDAP for authentication. For this, we point the web application to one of our AD domain controllers using the LDAPS port (636). When we have to update the Domain Controller, this has caused us issues because one more web application could depend on any DC. What we want We would like to point our web applications to a cluster "virtual" IP. This cluster will consist of at least two servers (so that each cluster server could be rotated out and updated). The cluster servers would then proxy LDAPS connections to the DCs and be able to figure out which one is available. Questions For anyone that has had experience with this: What software did you use for the cluster? Any caveats? Or perhaps a completely different architecture to accomplish something similar?

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• Log Files from bash script output

  - by neildeadman

  I have a script that runs (this works fine). I'd like to produce logfiles from its output and still show it on screen. I have this command that creates three files from this blog: ((./fk.sh 2>&1 1>&3 | tee errors.log) 3>&1 1>&2 | tee output.log) 2>&1 | tee final.log This does exactly what I want it to. My only issue is that I create files in my script and copy them somewhere, and I'd like to copy these logfiles there too, which I can't do whilst this script is running. I also wanted to make it easier for any user to run my script, so I created another script to run this script. According to this post (see last post) I can put a . before the script name and I can use variables assigned in my called script from the first script if I use them in the first. It doesn't seem to work though and I can't figure out why or find alternative methods. Can anyone help?

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• Munin - apache_watch_ plugin, does not show any data in the graphs that shows activity for per vhosts

  - by ovais.tariq

  I am using Munin for monitoring my server. I installed the apache_watch_ plugin so that i could see apache related activity. The graphs for apache_accesses, apache_processes and apache_volume work fine. But the graphs for Apache Documents served, Apache Input/output (bytes), Apache Requests don't show any activity in the graph. The important thing is that these graphs that don't show anything are supposed to show the data divided per vhosts. I am on Ubuntu 10.04.1 LTS (Lucid Lynx) and the munin version is 1.4.4. One thing that I think may be the cause for issue is that I have a separate config file for every vhost, which are included in the main config. But I can't really figure out any solution. Any help will be greatly appreciated!

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• ICQ offline messages (do not show up)

  - by Nils Riedemann

  Hi there, I have a weird problem with offline messages: I use Adium on 2 Macs (home and office) and Beejive (iPhone) for connecting to ICQ and other protocols. When someone sends me an offline messages I expect them to show up the next time I login with any of my 3 devices. But thats not the case. Recently some show up at the office, some at home and some on my iPhone – couldnt figure out any logic behind it, seems rather random. I thought for a while that it depends on the last device i have been logged in with. But thats not the case either. A friend can send me offline Messages during the weekend, i can login with my Mac at home or iPhone, yet in some cases it only shows up when logging in from office. Weird. It really freaks me out – and no, i can't make 'em go to jabber or the like. Anyone experiencing a similar problem?

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• Are there any free voice transcription software?

  - by netvope

  I have some 1-hour-long voice recordings containing useful information that I may need to look up in the future. Instead of transcribing them myself (which will take me many hours), I want to automate it using software. I don't need an accurate transcription; it's OK as long as I can get an idea of what was being talked about by skimming over the transcription. With this, I can quickly figure out which part of the audio contains the information I need, and is much more convenient than seeking randomly. In theory I could write a program to split the audio into 3 minutes chucks and pipe them into Google Voice's free voicemail transcription service... But I hope there are better solutions. Do you know any free voice transcription software? Note: Free trials are also acceptable

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• I am not seeing named session in gnu screen

  - by dorelal

  I am tying to learn gnu screen. I am using mac(snow leopard). I am running 4.00.03 version of screen. I am starting a new screen with following command screen -S foo However after that if I do ctrl + A + " then I see the list of screens. However all the lists have numbers and then bash. Because all it says is 'bash' I can't figure out which screen has what. Am I missing something?

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• Web connection speed issue

  - by Iroll750

  I encounter a strange issue with my web (wireless) connection on my laptop (Ubuntu 11.10) I'm able to have 540kbps (down) on all computers in my house (including laptop at the same distance from the box) except me. When i do a speed connection test, i can have this optimal speed immediately after booting. As i surf on the net, watching videos, download things, etc... it becomes slower progressively until 100-110 kbps and the speed remain the same until i reboot. I tried to figure out if a process consume bandwith in background with nethogs but i found nothing suspicious. Any ideas ? Thanks in advance for your help !!

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• Media Player Classic creating folder

  - by radiok

  Whenever I open a file in Media Player Classic it creates a new folder "Media Player Classic" under the folder of the file I opened. Originally it was putting a playlist in that folder, "default.mpcpl", but I found that if you open the playlist (Ctrl+7) and right-click the playlist, there is an option "Remember items", unchecking that will prevent MPC from creating this playlist. I was hopeful that without the auto-generated playlist MPC would have no reason to create the folder. Wrong. Now the folder is empty, but I still have to follow MPC around deleting all these blank folders. I use Media Player Classic on several of my computers so I think I just screwed up some variable somewhere somehow regarding where it stores playlists or something, but I can't figure out what it is, I've tried uninstalling and reinstalling to little avail. Which makes me think it might be in the registry. Does anyone have any ideas?

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• OOM-Killer called every now and then..

  - by SpyrosP

  Hello there, i have a dedicated server where i've installed apache2, as well as Rails Passenger. Although i have 2GBs of RAM and most times about 1,5GB is free, there are some random times when i lose ssh and generic connectivity because oom-killer is killing processes. I suppose there is a memory leak but i cannot find out where it comes from. oom-killer kills apache2, mysql, passenger, whatever. Yesterday, i did a "cat syslog | grep -c oom-killer" and got 57 occurences ! It seems that something seriously destroys the memory. Once i reboot, everything comes back to normal. I suspect that it can be related to Passenger, but i'm still trying to figure it out. Can you think of anything else, or do you have anything to suggest that will make the leak identification procedure easier ? (i was even thinking of writing a bash script, to be run with cron for like every 5 minutes).

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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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• Full HD video playback acceleration with mplayer on Ubuntu Lucid

  - by pts

  I know that for an NVidia card I can sudo apt-get install nvidia-current mplayer, reboot, and then use mplayer -vo vdpau -vc ffmpeg12vdpau,ffwmv3vdpau,ffvc1vdpau,ffh264vdpau FILE.mkv to get accelerated video playback of H.264 and other codecs, so even full HD videos can be played back with only little CPU. (And there are many other options, e.g. XBMC also supports VDPAU.) But how do I get accelerated video playback if I have a recent ATI or Intel video card on Ubuntu Lucid? How do I figure out if my video card has acceleration built in? The solution has to work with mplayer or mplayer2. It's OK for me to recompile mplayer(2), but I'd prefer installing both the kernel and the X.org X server from a binary package repository.

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• How to set up wireless access on a Cisco router

  - by Carlos

  Hi, I've set up my 877W according to the configuration listed in this forum post: IPTV over Cisco 877 (It's the working configuration at the bottom of the post) Note that I have an 877W, so it also has a wireless radio. Now, I've gotten the whole setup to work, so IPTV is working, and I can access the internet via the ethernet ports. Now I'm trying to figure out how to allow access via the dot11radio interface. I've gathered that I basically need to create a bridge group, and bridge the radio to the internet VLAN. However, when I add a bridge-group 2 command to VLAN1, it seems to take down the whole internet VLAN. (The IPTV continues to work.) This makes the router itself inaccessible (I've got a laptop, so no serial) and I end up having to reboot the router. Can anyone tell me how to a) Allow wireless access to the internet (preferably with WEP, to match my old router) b) Determine what makes the router inaccessible when I add the new bridge group c) Forward the IPTV traffic onto a machine on my internet VLAN

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• What's the proper format for an SPF record?

  - by deltanovember

  Querying my domain I get: The TXT records found for your domain are: v=spf1 ip4:50.22.72.198 a mx:wordswithfriends.net ~all So superficially it appears OK. However I also get the following message SPF records should also be published in DNS as type SPF records. No type SPF records found. I want to make sure things are absolutely airtight. So in addition to TXT records I also want a pure SPF record. However I cannot figure out the format. Placing the same text in an SPF record does not seem to work. Edit: At the moment I have a TXT record but not SPF record. When I cut and paste from TXT straight to SPF I get some type of crazy recursive DNS error so quickly deleted the SPF. I just want to know the correct format. Copying v=spf1 ip4:50.22.72.198 a mx:wordswithfriends.net ~all Straight into an SPF record doesn't work.

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• How to Mirror or Clone a Spanned Volume in Windows 2008

  - by Matt

  I have a spanned volume (3x6+ TB disks spanned to one 20+ TB volume) that I need to mirror or clone to a new 20+ TB (unspanned) volume. Once mirrored or cloned I'm going to destroy the original volume and reuse the storage elsewhere. Windows 2008 will not allow me to mirror it because the original is a spanned volume. I cannot simply copy the data, because there are sparse files on the volume. So the OS thinks there is 150+ TB used on the disk when there really is only around 18TB used physically. When I try to use the copy command it won't run because it thinks the destination volume needs to be 150+ TB to hold it all. A conundrum, but I figure someone here has the answer. Thanks, Matt

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• memcached and IIS manager with windows 2008

  - by user64484

  I have memcached (c:\memcached) running on port 11211 and I have a problem configuring IIS manager I created a site in IIS manager binded to port 11211 and if I have memcached running and try and start the site it says "the process cant access the file because it is being used by another process" If I stop memcached and start the site in IIS (and enable directory browsing) I can access the directory structure http://localhost:11211 ok, if I then try and start memcached it errors with error 1053 "could not start the memcached server on local computer" I know I'm doing something fundamentally wrong here! just cannot figure out how I can use IIS and memcached together. [edit]I should add that I need other servers to be able to access memcached[/edit]

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• How to troubleshoot intermittent and irregular connection errors on home network (preferrably Mac client)

  - by Martin

  Hi, I'm experiencing intermittent connection errors in our home network from two different computers, normally "Connection Reset" when browsing, but also other issues such as very slow throughput. I have approximately a network setup as below: ISP-Cable Modem-Dlink DIR 655 Router-(Ethernet)-Fon Router-Mac/Windows laptop Basically, is there a simple way to monitor the network and detect where issues are coming from? Right now we don't know if it is the Fon router, the Dlink router, the modem or the ISP. As the issue is intermittent, is there a software that regularly traceroutes a set of destinations and tests e.g. throughput, something that can help us figure out where in the chain the errors are introduced? The more automatic network monitor, the better.

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• Backup drivers for a device in Windows 7

  - by Moses

  If I can't find a driver on the internet when I prep for a reinstall of Windows 7, I figure if the driver is already installed, why not back it up and reinstall later? The only method I know of is going through Device Manager Device Properties Driver Details. This gives me a nice list of all the files, but then I need to go manually retrieve all of them. For devices with a lot of driver files, this is inefficient. Is there a better way to accomplish this?

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• Getting bounced mail in OS X terminal

  - by cloudhead

  I just noticed when launching my terminal a message "You have new mail." I would like to know if someone is trying something malicious with my email and name. The mails are all returns from the same server. There are 20 of them: N 1 MAILER-DAEMON@ussjoa Tue Nov 10 16:57 73/2522 "Undelivered Mail Retu" Each message appears to be the same, some sort of attempted registration (note: I omitted my personal email address from the following code): --6A9539564F2.1257902972/ussjoaboynton3.us.deloitte.com Content-Description: Undelivered Message Content-Type: message/rfc822 Received: by ussjoaboynton3.us.deloitte.com (Postfix, from userid 501) id 6A9539564F2; Tue, 10 Nov 2009 17:29:32 -0800 (PST) To: [email protected] Subject: Your registration informaton From: **(personal email address omitted)** Message-Id: <[email protected]> Date: Tue, 10 Nov 2009 17:29:32 -0800 (PST) First Name: as Last Name: as Email Address: as Username: as Password: F!ekUXN3 --6A9539564F2.1257902972/ussjoaboynton3.us.deloitte.com-- byte 2302Diagnostic-Code: X-Postfix; unknown user: "as" Any information to help figure out what is happening is greatly appreciated. Thank you.

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• How do I reference the value of a constructed environment variable in a loop?

  - by Rob Spieldenner

  What I'm trying to do is loop over environment variables. I have a number of installs that change and each install has 3 IPs to push files to and run scripts on, and I want to automate this as much as possible (so that I only have to modify a file that I'll source with the environment variables). The following is a simplified version that once I figure out I can solve my problem. So given in my.props: COUNT=2 A_0=foo B_0=bar A_1=fizz B_1=buzz I want to fill in the for loop in the following script #!/bin/bash . <path>/my.props for ((i=0; i < COUNT; i++)) do <script here> done So that I can get the values from the environment variables. Like the following(but that actually work): echo $A_$i $B_$i or A=A_$i B=B_$i echo $A $B returns foo bar then fizz buzz

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• How can I correlate a wall jack to a user/machine on the domain?

  - by harryfino

  After reading Valve's new employee handbook, I was really interested in setting up a company map like they described on page 6: "The fact that everyone is always moving around within the company makes people hard to find. That’s why we have http://user — check it out. We know where you are based on where your machine is plugged in, so use this site to see a map of where everyone is right now." What I'm trying to figure out is: how I can tell which machine or domain user (either will do) is connected to a particular wall jack?

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• need help upgrading small business wifi network

  - by Henry Jackson

  Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to reconfigure the setup, with these goals: wifi roaming between the access points user-based authentication that isn't as annoying as MAC address filtering. 1) The entire building is hardwired with ethernet, so I assume it should be easy to set up the routers to act as one big network, but I can't figure out how. Can someone point me in the right direction? The routers are consumer-grade linksys routers, is it possible to do this without getting new hardware? 2) For security, we will probably upgrade to WPA2, and I'm thinking of using the Enterprise version so that users can log in with a username, instead of having a single key (so if an employee leaves or something, their access can be removed). We have several on-site Windows servers, can one of them be set up as a RADIUS server, or is that best left to a dedicated machine (again, using existing hardware is good).

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• organizing images by resolution with batch files

  - by Anthony

  Doing some digging I'm trying to figure out a command line solution for organizing very large archives of images based on their resolution into folders, 1920x1080, 1600x1200, 1600x900, etc. I've come across a few post on Superuser mentioning something called ImageMagick, is that the best method to the madness I'm trying to accomplish? I've never used any command line functions/applets/tools other then those that come from Microsoft. I'm rather new to command line usage but ive been enjoying the hell out of it using Powershell, xcopy and robocopy. I am slowly trying to push myself further into the Linux world with Ubuntu running on one of my physical machines as well as a virtual machine so that's an option as well.

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• Does ssh-copy-id overwrite previous keys?

  - by decker

  I haven't yet found any definitive answer on this using google. It seems like the answer is no, but I need to know for sure before I go ahead and do it. Does ssh-copy-id append the key to authorized_keys or does it overwrite the previous keys? Thanks. Addendum: So the answer is right there in the man page. Go figure. I guess the question can at least help fellow Google-jockeys like me who get a little too used to googling and finding tutorials (that often explain things in layman's terms for us poor folks who have only used Windows our whole lives).

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• IP stops working from time to time

  - by Mattias

  Hi, have a problem that I can't seem to find the reason for. We are running a small network with windows clients(XP/Win7) and windows servers(2008 sp2/2008r2). The domaincontroller is working as DC, DNS, DHCP, VPN. We have a Level1 FBR4000 between internet and our internal network. The problem is that from time to time specific IP-adresses stops working, the only way I have gotten the devices to work again is to exclude the specific IP from the DHCP address pool and getting a new IP, then everything works again. It seems as the specific IP is beeing banned/blocked somewhere but I just can't figure out where. Anyone got an idea as to where I should start to look? I could also point out that I just reinstalled all servers due to a officemove and was hoping to get away from this problem but it just showed up again. This last time it was my iPhone that got stuck through the Wi-Fi...

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• Is there a point to using theft tracking software like Prey on my laptop, if you have login security?

  - by Reckage

  Hey, so I have a Thinkpad that I use in a variety of places (coffee shops, work, etc.). I don't generally abandon it, but I figure there's a chance I might get careless and it gets stolen at some point. I was thinking of installing something like Prey (http://preyproject.com/), but my OS installs are password secured, and on top of that, I have a fingerprint reader that you need just to get through the BIOS. So: is there actually any benefit to setting up software that tracks the laptop's whereabouts? I imagine that either: The laptop won't boot or login, if the thief doesn't get past the security. If the thief goes around said security somehow, presumably they've split the laptop for parts or bypassed BIOS security, gotten stuck on Windows security and formatted it. Given that it's highly unlikely that the thief would go to the trouble, what's the utility in installing laptop tracking software like Prey?

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