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• Batch update users on Active Directory

  - by FrancisV

  We have around 1000 users in the Active Directory (on Windows 2008 R2) and we would like to batch update a field (student/employee ID number) from the school management system into their existing Active Directory accounts. Obviously, each student/employee ID is unique and needs to be matched to their current Active Directory account. How can this be done? Is there a tool available for this purpose?

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• MySQL replication hung after slave goes offline and comes back online again

  - by Ed Manet

  I have a master server and several slave servers replicating a single database. I am using in MySQL 5.0 in SLES 11. During fault tolerance testing I found that when the slave's network connection is broken (cable un-plugged) and then restored, replication hangs. It shows no errors and the slave appears to be running but the Read_Master_Log_Pos and Exec_Master_Log_Pos values do not match the log postion on the master server. The Slave_IO_State is "Waiting for master to send event". The Slave_IO_Running and Slave_SQL_Running values are both are "Yes". The Master_Log_File and Relay_Master_Log_File match. If I stop and start the slave or restart the mysql daemon, replication starts working again. Any ideas on what I can do about this?

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• Setup link aggregation and jumbo frames on VMware ESXi 4

  - by Sysadminicus

  I'm setting up an ESXi 4 server to connect to an NFS datastore. I'd like to bond two of the NICs together and use jumbo frames for the NFS connection on a private (non-management) network. I setup a new switch with the 2 NICs and am able to connect to the NFS share over it, but could use some guidance on getting jumbo frames and link aggregation/bonding/teaming working.

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• Setting up a very mixed Active Directory network to work with PowerShell Remote Administration

  - by erictheavg

  Summary: I want to be able to monitor the computers on my network, but don't need it to be automated. We're too small to purchase anything like MOM, but too big to do anything manually (~100 machines in two locations). I just keep running into issues, and was wondering if there's a master list of Group Policy settings I can distribute to my environment to get Remote Powershell working. Environment: Our AD network is pretty mixed. The end users have XP SP3, Win 7, and Win 7 x64. The servers include Win2k3 SP2, Win2k8, Win2k8 x64, Win2k8 R2, and Win2k8 R2 x64. Details: I'm trying to get it to work with Remote Powershell, but I run into errors like the following: Connecting to remote server failed with the following error message : The WinRM client cannot process the request. Default authentication may be used with an IP address under the following conditions: the transport is HTTPS or the destination is in the TrustedHosts list, and explicit credentials are provided. Use winrm.cmd to configure TrustedHosts. Note that computers in the TrustedHosts list might not be authenticated. For more information on how to set TrustedHosts run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic. + CategoryInfo : OpenError: (:) [], PSRemotingTransportException + FullyQualifiedErrorId : PSSessionStateBroken Then I go to the computer (Win2k3 SP2 server) and run winrm quickconfig per the recommendations via google, and it says: Make these changes [y/n]? y WinRM has been updated to receive requests. WinRM service started. WSManFault Message = The client cannot connect to the destination specified in the request. Verify that the service on the destination is running and is accepting requests. Consult the logs and documentation for the WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service, run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". Error number: -2144108526 0x80338012 The client cannot connect to the destination specified in the request. Verify that the service on the destination is running and is accepting requests. Consult the logs and documentation for the WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service, run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". That's right. It tells me to remedy my winrm quickconfig failure by running winrm quickconfig. I don't want to band-aid this project one google search at a time. I'm sure there is a step-by-step tutorial out there on how to set up a network for powershell remote administration. Does anyone know of one? Books are acceptable. Thanks in advance! I didn't think my question would get this long.

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• help needed for server hardware configuration

  - by sansknowledge

  hi, basically i am software guy got recently promoted to managerial cadre which requires giving recommendation for server to run software developed by our company , the software is a work flow management and the db is oracle 11 , approximately the size of daily transaction would be around 40 gb, and it should be connected to ~ 150 client machines , the client machine will be growing. help on terms of cpu, processor, memory , rack and stack or raid (i really yet to understand that concept) OS, will be greatly appreciated.

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• RDMA architecture - do you need adapters on both ends?

  - by Bobb

  I know Linux can use RDMA NICs like Solarflare... I just found Intel has something like that NetEffect cards. But Intel is talking all about clusters.. Can someone please explain. If I want low-latency networking and install RDMA NIC on my server. Is there limitation on where the cable can go? Is there a specific device expected on the other end? Is it special RDMA switch or RDMA adapter before switch or what? Why is this cluster talk? What if I want a single server with Windows (I can install HPC Windows or Windows 2008 R2)?

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• Temperature monitoring on Dell Precision M4500 under Linux: sensors-detect doesn't, what next?

  - by Tikitu

  I have a Dell Precision M4500, Intel Core i5 CPU, running Linux (Ubuntu Lucid), and would like to keep an eye on CPU temperature. I've tried lm-sensors: sensors-detect didn't find any sensors; following its hint ("This is relatively common on laptops, where thermal management is handled by ACPI rather than the OS.") I tried acpi -V but got nothing thermal. The Gnome panel applet "Hardware Sensors Monitor" reports on GPU temperature but nothing else. What should I be trying next?

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• Change audio output depending on which one is on

  - by pkrish

  I have a PC that is hooked up to my HDTV (via a long hdmi cable) and to a monitor, which is in another room. I have speakers directly plugged to the PC audio out. The PC is next to the monitor and speakers. I am not sure but I think Windows can play sound on only 1 audio device at a time. And I can only set 1 device as the default output. I can get sound on the TV or speaker depending on which device I set to default. But I would have to do this every time I switch between using my TV or my monitor! Is there some way to configure such that sound plays through the TV if the TV is on, else it plays in the speakers? If this is not possible, then the next best alternative would be to get the sound to play on both the devices at the same time. Thanks!

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• How share internet connection between two laptops

  - by danielgratzz

  I have what appears to be a cable modem plugged into the wall with only ONE ethernet port on it. Therefore i can only connect one computer to it. Also, it has no wireless capability. I have to dialup the connection and enter a username and password on my laptop. But how can i share this internet connection between two laptops running windows 7 ultimate? I have spare ethernet cables if that would help... Please help, thank You.

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• Question about Remote WAN IP on NetGear FVS336G VPN setup

  - by camilian

  I wanted to be able to have a VPN connection to my home network so I purchased the FVS336G because the reviews said it was easy set up. I am sure it is for someone that knows what needs to be entered it is easy, but I am a little confused. Using the VPN wizard I choose VPN Client as the tunnel connection, enter key, etc... but then I get to the "What is the remote WAN's IP or Internet Name" and "What is the local WAN's IP address or Internet Name" I am lost. I am probably being really dumb, but I am not sure what I need to put in here. Is the remote WAN ip the ip from the outside world to my cable modem? Is the local ip the ip to my FVS336G? Any help would be appreciated.

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• "No bootable device - insert boot disk" after restart on Ubuntu 10.04 b1 update

  - by anjanesh

  I was making an update on my Ubuntu 10.04 beta1 64-bit PC when, after reboot I get PXE-E61: Mediaa test failure, check cable PXE-M0F: Exiting Intel Boot Agent. No bootable device - insert boot disk and press any key How did my boot record disappear ? BIOS Boot Boot Menu Type : Normal Boot Device Priority : <CD/DVD-ROM Drive> <Hard Disk Drive> <Floppy Drive> <Ethernet> Hard Driver Order : No Hard Disk Drive CD/DVD ROM Drive Order : <PT-TSSTcorp CDDV> Removable Drive Order : No Removable Drive Boot to Optical Devices : <Enable> Boot to Removable Devices : <Enable> Boot to Network : <Enable> USB Boot : <Enable>

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• How do I set up failover for a single web server using two ISPs?

  - by Travis

  I have one web server and two WAN connections (1 cable, 1 DSL). DNS is run offsite, and points to the IP address assigned by one of the ISPs. How can I have the second connection take over when the primary one fails? I have seen that it is possible to have two A records, each pointing to a different IP, but it has several problems. What's the real solution to this? I imagine this is a very common issue. Thanks in advance!

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• Bitlocker-to-go on fixed drive

  - by Unsigned

  Scenario Two drives are connected to a computer. One via a SATA-to-USB interface, the other directly via a SATA-to-eSATA cable. The drive on USB appears as a removable drive, the drive on eSATA appears as a fixed drive. Both use NTFS. The USB drive offers Bitlocker-To-Go, the eSATA drive only offers BitLocker. Question It is my understanding that drives encrypted with BitLocker-To-Go include an app to allow Windows XP read-only access to the volume. Is this the only difference, and is there a way to use Bitlocker-To-Go on the eSATA drive? Update Another difference is found here: The recovery key is required when a BitLocker-protected fixed data drive configured for automatic unlocking is moved to another computer.[1] Assuming that does not apply to removable drives.

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• Server only powers (but doesn't POST) when IDE drive is powered

  - by Jookia

  So after a thunderstorm last night which did a little damage, a Gigabyte server has decided it's going on power on but not POST. If it is POSTing, it's doing a very bad job at telling me. No beeps, nothing. Power seems to reach the components though. CD Drive opens and closes. So after stripping it back, I've found that the difference between this behaviour and deciding it's not going to power on for more than half a second, is having a power cable plugged in to one of the IDE hard drives. Is this normal, or a sign that the PSU has had it?

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• Stunnel delaying boot

  - by Onitlikesonic

  My stunnel implementation works fine when the network is plugged in but it takes an awful amount of time, which delays the whole boot process, when there is no network connected to the machine. As extra information: I'm using "delay=yes" I'm using an fqdn (e.g: stunnel.mydomain.com) for the connections Using ubuntu but this also happened with centos5 previously How can this be avoided or a timeout specified? edit: doing an strace as suggested by symcbean shows the following (including the last part where it hangs): [...] --- SIGCHLD (Child exited) @ 0 (0) --- rt_sigreturn(0x11) = 0 close(3) = 0 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6039 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff9ce0c79d0) = 6046 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6046 --- SIGCHLD (Child exited) @ 0 (0) --- rt_sigreturn(0x11) = 6046 write(1, "[Started: /etc/stunnel/stunnel.c"..., 37) = 37 write(1, "stunnel.\n", 9) = 9 exit_group(0) = ? [...] stunnel hangs in this line: wait4(-1, and when i plug in the network cable it continues to show [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6046

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• an unknown ip on network

  - by Ahmed safan

  In our office we have many PCs, all of them have static IP addresses. We had a problem with one server with ip 192.168.1.10 dropping off the network occasionally. I unplugged the network cable from the server and from pinged 192.168.1.10 from another host and there was a response. I searched all PCs to see if any has such ip but i didn't found a one. I changed the server ip to fix the problem, but I still find this rogue device using 192.168.1.10 on the network -- how can I figure out what it is? Could it be the ip of virtual machine on someone's PC?

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• How do I maximize and check my gigabit transfer rate?

  - by J Penguin

  I'm trying to maximize my LAN transfer speed. LAN cards and switch are all gigabit on a CAT 6 cable. Modes are set correctly to 1000 full duplex. CentOS server Testing with ftp from both windows and fedora, I'm only having the speed around 11MB/s. On windows I notice that the first few seconds of file transfer I'm actually getting around 25MB/s before it drops to 11MB/s Can anyone please recommend me what my next step should be to increase this performance? Are there any utilities I can use to test the file transfer speed without taking hard drive speed into consideration? The only thing I know is the MTU which I will have to wait until the office hour is over before I can play with it. If there are anything else I should be aware of, please please let me know. Thank you!

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• Is using Windows Update to find Drivers for laptop good enough?

  - by user22105

  I'm trying to install drivers for my laptop after fresh install of Windows 8. From the manufacturer's website, there are many drivers and utilities available. But after running Windows Update(which finds drivers for the hardware on my laptop), I only had to install a few (the ones with Unidentified Device) I'm wondering if this is good enough? or would I skip some important drivers like Chipset Thermo management etc etc that could potentially cause harm to my laptop?

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• How to create ftp server on Webmin?

  - by Tom

  Hello firstly, i'm new at vps hosting so i'm not that good at SSH and so on, So i have a vps running centOS 5.4 x64 LAMP ( linux,apache,mysql,php) and i'm really confused because i can't find FTP management or subdomains or even the email address on my webmin panel. Should i install additional modules ? Thanks

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• How do I increase my home's bandwidth?

  - by Derek

  I just mistakingly posted this on Stack Exchange but don't know how to delete it... Anyway, I was thinking of building a home server to use instead of renting a VPS, because in the long run it would be cheaper. What I'm concerned with is the bandwidth limit of my house. I know when I'm downloading something off the internet, if I download at high speeds the rest of the computers connected to my router will become slower. Is there any way to avoid this? There are other cable outlets in my house, will connecting a modem and router there avoid this problem?

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• How to prevent Ubuntu from combining networks on 2 NIC server?

  - by SolarPower

  I've got a Ubuntu Server 10.10 with 2 network interfaces with a cable plugged into both going to switches on completely different networks with different routers. One network is the 10.1.10.X network with a separate gateway/router - the server has an IP of 10.1.10.50 with the gateway IP of 10.1.10.1. The other interface is 10.2.10.X, IP 10.2.10.50, gateway 10.2.10.1. All my Mac machines are on the 10.2.10.X network, and all servers on the 10.1.10.X. The ONLY connection between the two is this machine. From a Mac in my office, I CANNOT ping any computer on the 10.1.10.X network except the Ubuntu machine I'm talking about. However, under the Shared column in Finder, I can see every server on the other network listed. That makes me believe that somehow this Ubuntu machine is letting certain requests span both networks, which is a security problem. Hope this is enough info.

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• External Display connected to Macbook pro won't sleep

  - by Moiz

  I have Macbook Pro with OSX 10.6.8. It is connected to external display (HP 2311x) using Thunderbolt to HDMI cable. My Macbook display goes to sleep after every 15 minutes of inactivity but the external display won't go to sleep. It does try to go to sleep but wake up immediately. It does that in never ending loop. I have to manually turn off the external display. Is there some settings I need to change to make external display sleep when Macbook display goes to sleep? Any suggestions? Thanks in advance!!

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• Realtek HD Audio 5.1 Optical Input (from Xbox 360)

  - by Shevek

  I'm trying to connect up my Xbox 360 digital audio to my 5.1 speakers via my PC (my LCD has dual input, DVI for the PC, D-SUB for the Xbox). The motherboard has a Realtek ALC888 chipset and I have a 5.1 speaker system connected via 3 x 3.5mm jacks (FR/FL, RR/RL, C/LFE) and I get full 5.1 output from the PC. I have connected the optical audio cable from the Xbox to the Optical In on the motherboard's backplate. With the Xbox in Digital Stereo mode I get 2 channel audio from the Xbox, through the PC, to the speakers. With the Xbox in Dolby Digital 5.1 mode I get no sound at all. I have the latest Realtek drivers installed in Win 7 32-bit. Questions: Is it possible to use the full 5.1 DD from the Xbox? If so, am I missing some option(s) in the Realtek setup? Do I need some other piece of software to do this? (AC3Filter or FFDShow perhaps) Many thanks

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• Configure TV Capture card to not use external audio jack for TV audio output

  - by Adam D.

  I had this working with MythTV on Ubuntu 9.1. Then a power surge killed the motherboard. After replacing the motherboard, ram and cpu, the card does not produce any audio except through the output jack on the back of the card. I do not want to use a cable to go from the back of the card to the audio in on the built in sound card of the new mother board. FYI, the old motherboard did not have an on-board sound card. There was a separate audio card installed. There's some configuration that has to be done to have it work the same way again. I just have no idea where to start. This is regarding wintv hauppauge mythtv linux ubuntu 9.10 audio

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• Cannot see main user profile directory on old vista hdd on win7

  - by chaoskreator

  I have an old laptop HDD that ran Vista that I need to get some pictures and movies off of. I've attached it via SATA cable to my new Win 7 (64 bit) machine and it mounts fine, except I can't see the main user profile in the D:\Users directory. I've changed ownership and permissions for the D: drive to my C:\ Username but still no luck. I read something about it being caused by the UAC being active on the Vista machine. Is this true? Is there a way to disable this and gain access to the main profile without putting it back into the old laptop (it's fried and won't boot)?

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