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• Temporarily disable an AD server

  - by 3molo

  Topology and setup We have main office A, and branch office (abroad) B. Our ISP somehow messed up the MPLS, and office A<B will not be connected until a few days. At location B, we have an AD (and the other two ADs at location A). Location A also have an exchange server. The problems A few users at A have problem to login to their computers running Windows XP, the logon process kind of hangs where "Applying computer policies". Additionally, I can't start the Exchange management shell, it fails on get-recipient because the AD abroad (location B) is unreachable. Solution? I could delete the AD at B, but Im pretty sure it will be a hazzle to re-join it, and since the office is abroad it's not an option to just go there and re-install it - re join, I now wonder how I in location As primary and secondary ADs can temporarily disable AD at location B.

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• Create mirror software raid with bad blocks hdd. How to check data integrity?

  - by rumburak

  There is error in System event log like this one: "The device, \Device\Harddisk1\DR1, has a bad block." Because of above I created Raid 1 on this disk and other one. I'm using Windows Server 2008 R2 software RAID volumes. Volume in Disk Manager is marked as "Failed Redundancy" and "At Risk". I could command to "Reactivate Disk" and it's starts to re-sync, but after a while it stops and returns to previous state. It stops re-sync on bad block on old disk and creates same error in System event log. Old disk status is Errors, new disk status is Online. How can I check that there is exact copy of the old disk on new one ? It is server machine so I would prefer to keep it running during this check.

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• VMware networking - PortChannel or not?

  - by dunxd

  My ESX hosts each have 8 NICS. I have set up 2 NICs for our iSCSI SAN - each is connected to a different SAN switch. 2 NICs are set up for vMotion and Service Console - these are each connected to a different core switch (ports are trunked with VLANs dedicated to vMotion and Management) I now have four ports left over. Currently we have these set up each going into our default VLAN. Two NICs are connected to one core-switch and two are connected to the other. We decided to aggregate the connections to each switch - so they are teamed at the vswitch end, and port channelled at the physical switch end. I am now reading that port channelling these connections is not particularly useful, perhaps even over complicating things. Is there a particular problem with using port channels for VMware? What method provides the best balance between redundancy and performance?

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• Monitor blinks frequently

  - by Eric J.

  I recently resolved an issue that was causing one monitor not to be recognized by Windows by running a tool called Driver Sweeper to remove all old driver remnants, then updating to the latest nVidia drivers. Prior to that procedure the main monitor worked fine. After that procedure (now with the second monitor recognized), the main monitor blinks frequently. About once every 15-30 seconds, the monitor goes dark for the blink of an eye. Sometimes it only appears to happen in the bottom portion of the monitor, but other times it seems to affect the whole screen. Can this be caused by the particular driver? Could it just be an unlucky coincidence and the main monitor is starting to fail? I hesitate to experiment with new driver versions after having just restored the second monitor to a working state, so hope for some feedback before heading down that road.

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• Asus G53SX How to use the recovery partition

  - by Amento

  I am trying to use the recovery partition on my Asus G53SX laptop, but the instructions in the included booklet don't match up with what happens on the computer. It says press F9 during bootup and then press ENTER to select windows setup. Then select the language you want to recover, and so on. When I press F9 I end up in the boot manager and from there I can access safe mode and all these things. The closest thing I can find in this list is "Repair your computer" but this menu takes me to recovery points and backup images, none which are mentioned in the booklet. How can I use the recovery partition to restore my laptop to factory state?

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• Xampp installation

  - by Bernavi Spain

  I get some troubles when I want to install the xampp tool, I run the command sudo apt-get install xampp and this is what I get in return Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: xampp:i386 : Depends: python-gtk2:i386 but it is not going to be installed Depends: python-glade2:i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages. Im using linux mint maya cinnamon

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• How much should a Systems Administrator be making?

  - by Curtis

  Hello, I'm a Sys Admin for a small (but successful and growing) company (~60 employees). I've got roughly 5-6 years of actual sys admin experience, plus another 5+ years of lower level work in the industry. I'm responsible for most everything above a helpdesk level in the company (server[windows]/network[cisco]/firewall/SAN[emc] setup/configuration/maintenance/troubleshooting), lead many projects, analyze system data -- I'm sure you've heard it all before...I have a bunch of certs, most are just "nice to have", but the ones that actually apply to my role are CCNA, MSCE, VCP (VMware). If things go wrong, I'm first in line to resolve the issue. I'm not management (no one reports to me). I've seen many of these sorts of questions online before, and I know the typical response is "too many variables, depends on location, industry type" etc etc. I'm just wondering (ballpark) what I should be looking for. I've tried to give as much detail as I can, but if I'm missing something, I'd be glad to post it. Thanks anyone.

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• How well will ntpd work when the latency is highly variable?

  - by JP Anderson

  I have an application where we are using some non-standard networking equipment (cannot be changed) that goes into a dormant state between traffic bursts. The network latency is very high for the first packet since it's essentially waking the system, waiting for it to reconnect, and then making the first round-trip. Subsequent messages (provided they are within the next minute or so) are much faster, but still highly-latent. A typical set of pings will look like 2500ms, 900ms, 880ms, 885ms, 900ms, 890ms, etc. Given that NTP uses several round trips before computing the offset, how well can I expect ntpd to work over this kind of link? Will the initially slow first round trip be ignored based on the much different (and faster) following messages to/from the ntp server? Thanks and Regards.

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• Insulate hosted client domains from server IP address change?

  - by babtek

  I will be hosting web content for many client domains on a single IP address (with a web hosting company, not inhouse machine). Initially, I must give client some information to configure their registrar to point the domain to my server. I want client domains insulated from a potential IP address change, so if I change hosts/IP address they don't have to reconfigure anything with their registrar. Is this reasonably possible without running my own nameserver? If so, what would be the smartest way to make it happen? Instruct clients to make CNAME record? Use some type of DNS management service that clients would use as a nameserver?

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• How to setup a 1 way trust, Windows Server 2008 R2

  - by MichaelOz

  I am on my home network and connect to workplace via a VPN. I have a DC on my home network (DC1 , domain = home). How can I setup a 1 way trust, so that I am able to run executables, such as SQL Management Studio using RunAs - then type in credentials for work domain? First question is, will a 1 way trust solve this, and can I set this up without bothering a network admin at workplace (assuming I have a domain account with enough permissions on work domain) If yes - any good step by step guide to setup 1 way trust? Server is Windows Server 2008 R2. As mentioned its DC running DNS Role too. Thanks in advance

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• Whatsup gold reporting

  - by rotard

  I work for an IT consulting company, and we use WhatsUp Gold to monitor our and our clients' servers. WUG works, and provides all the data we need in a reasonably useful format. However, management wants to use it as a sales tool. They want more attractive reports that they can hand off to clients and prospective clients to show off how slick our monitoring software is. Is there a third-party solution that will generate more attractive reports based on data in the WUG database? I have already suggested using reporting services to build our own reports, but that idea was rejected.

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• Private cloud solution [Eucalyptus,OpenStack, Nimbus] for Java deployments [Glassfish, Tomcat]

  - by Tadas D.

  I am interested in a way to have private cloud which would host Glassfish (or Tomcat) server. Which option from Eucalyptus, Openstack or Nimbus would be best to deploy java applications on it? Or maybe there is something other and I am looking wrong at the problem? The way I imagine this, that I should have some shared storage that I could expand by introducing new nodes to this cluster and have easy management for glassfish instances: something like virtual machines images that I can start and stop on demand and that image is shared among nodes. I don't need concrete step-by-step solution here but guidelines how this should be done are very welcome.

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• pecl_http extension not loading

  - by Tegan Snyder

  For some reason pecl_http extension is not showing up in my test.php file with contains: <?php phpinfo(); ?> I just installed pecl_http using: pecl install pecl_http The install was successful and I verified it by running: pecl list Installed packages, channel pecl.php.net: ========================================= Package Version State mongo 1.2.10 stable pecl_http 1.7.4 stable I then located my php.ini file using: php -i | grep 'Configuration File' Configuration File (php.ini) Path => /etc/php5/cli Loaded Configuration File => /etc/php5/cli/php.ini I edited it in vim and added: extension=http.so Finally I restarted Nginx and PHP-FastCGI: /etc/init.d/nginx restart /etc/init.d/php-fastcgi stop /etc/init.d/php-fastcgi start My PHP extension_dir is : /usr/lib/php5/20090626 I verified that "http.so" is located in that directory. Any ideas why it's not loading? My machine is running a Ubuntu 10.04 LTS 64bit Profile on Linode. The only other extensions I have installed are New Relic and Mongo. Thanks!

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• New CAT5 cable run is unstable - bad jacks? Bad cable?

  - by BeemerGuy

  This is a little project I'm doing at home. I wanted to wire two rooms together (basically, the router is one room, and the switch is in the second room). So I ran a CAT5 between the two rooms, and wired an RJ45 jack in each room. I then hooked up the two jacks with two CAT5 cable to run it through the cable tester, and all 8 wires seem good. Now, when I connect the switch and the router, the connection is unstable -- I ping the router and it barely holds on for two pings before it disconnects, and stays in that unstable state. Just to make sure the router and the switch are ok, I connected them with long wire between the two rooms and the connection is absolutely stable, and pings continuously. What could be the cause for the unstable connection? Especially that it pings a few times, so there IS a connection. But why is it unstable? And how come the cable tester says it's ok, but it's unstable?

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• Upgrade PHP to 5.3 in Ubuntu Server 8.04 with Plesk 9.5

  - by alcuadrado

  I have a dedicated server with Ubuntu 8.04, and really need to upgrade php to 5.3 version in order to deploy a new version of the system. This version of php is the default one in ubuntu 10.04, so I considered upgrading the OS, but after trying that, I lost my plesk installation, which annoyed my client. I tried adding the dotdeb.org repositories, but don't know why, after running an apt-get upgrade, I get this error: # apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: libapache2-mod-php5 php5 php5-cgi php5-cli php5-common php5-curl php5-gd php5-imap php5-mysql php5-sqlite php5-xsl 0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded. Any idea why is this happenning? Or do you know any alternative method (except compiling my own binaries) to upgrade php or update ubuntu without loosing plesk? Thanks!

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• Practical RAID Performance?

  - by wag2639

  I've always thought the following to be a general rule of thumb for RAID: RAID 0: Best performance for READ and WRITE from stripping, greatest risk RAID 1: Redundant, decent for READ (I believe it can read from different parts of a file from different hard drives), not the best for WRITE RAID 0+1 (01): combines redundancy of RAID 1 with performance of RAID 0 RAID 1+0 (10): slightly better version of RAID 0+1 RAID 5: good READ performance, bad WRITE performance, redundant IS THIS ASSUMPTION CORRECT? (and how do they compare to a JBOD setup for R/W IO performance) Are certain practical RAID setups better for different applications: gaming, video editing, database (Acccess or SQL)? I was thinking about hard disk drives but does this apply to solid state drives as well?

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• MOM 2005 SP1 and MBSA 2.1 : Compatible?

  - by Mitch

  We're currently using MOM 2005 SP1 for our system monitoring duties. It was installed and "configured" by someone who is no longer on our team. In the process of correcting a persistent error in the applications log of all of the monitored servers, "Default Global Virtual Directory Not Configured", I'm seeing the MBSA management pack is for MBSA v1.2. The current version of the MBSA appears to be 2.1. Does anyone have any experience in configuring MOM to use MBSA 2.1? Does MOM get along with MBSA 2.1? Any input would be appreciated. Point me in the direction of more reading if there's something out there I should be referring to. Thanks!

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• Scripting a database copy from MS Sql 2005 to 2008 without detach/backup/RDP

  - by James Santiago

  My goal is to move a single SQL 2005 database to a seperate 2008 server. The issue is my level of access to both servers. On each I can only access the database and nothing else. I cant create a backup file or detach the database because I don't have access to the file system or to create a proxy. I've tried using the generate script function of sql 2005 management studio express to restore the schema but receive command not supported errors when attempting to execute the sql on the new database. Similarly I tried using EMS SQL Manager 2005 Lite to script a backup of the schema and data but ran into similar problems. How do I go about acomplishing this? I can't seem to find any solutions outside of using the detach and backup functions.

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• Perl script and out of memory errors

  - by Kevin

  We have a midsized server with 48GB of RAM and are attempting to import a list of around 100,000 opt-in email subscribers to a new list management system written in Perl. From my understanding, Perl doesn't have imposed memory limits like PHP, and yet we are continuously getting internal server errors when attempting to do the import. When investigating the error logs, we see that the script ran out of memory. Since perl doesn't have a setting to limit the memory usage (as far as I can tell) why are we getting these errors? I doubt a small import like this is consuming 48GB of ram. We have compromised and split the list into chunks of 10,000, but would like to figure out the root cause for future fixes. This is a CentOS machine with Litespeed as the web server.

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• Flexible classroom environments (OS, Office)

  - by HannesFostie

  I work in the IT department of a training center, we still offer XP and Office 2003 trainings but also offer Vista and Win7 and Office 2007. Currently, we use VMs on VMware Server but this is obviously not a superb choice. We're thinking of implementing something like VDI (brainstorm phase, we hardly have any details) but I decided to check here if people would have some clever alternatives. Requirements: * Flexible when it comes to deployment * Centralized management would be a big plus * Allow for different software, whether they be compatible or not (all of office except for outlook can be installed simultaneously. for outlook you need to choose between 2003 or 2007) * Allow for different OS We have a big enough budget to implement a proper SAN environment to accomodate the virtualization of the solution, whatever kind it may be. A support contract will probably be necessary as well, because we need to be able to offer quick solutions to problems and with only 2 sysadmins that is simply impossible to guarantee.

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• How to change Chrome default search engine from regional one to google.com without loosing search suggestion

  - by Karsus Ren

  I want to use google.com instead of google.com.hk as my default search engine in Chrome. I tried to use custom search engine, but they all break search suggestions, not even something like https://encrypted.google.com/search?q=%s&{google:RLZ}{google:acceptedSuggestion} {google:originalQueryForSuggestion}{google:assistedQueryStats} {google:searchFieldtrialParameter}sourceid=chrome&ie={inputEncoding} which include parameters like acceptedSuggestion that seems to imply seach suggestions being enabled. But no, search suggestions still don't work. In addition. some websites suggest editing Local State file under Chrome's setting folder. I already tried that, and it didn't work at all. So, is there any way to use google.com as default search engine without breaking search suggestions?

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• htpasswd and htaccess in Plesk 9.3

  - by J White

  Greetings Here is my situation. I currently have one website on my dedicated server. As of now, I have protected the directory /exclusive using the Plesk control panel. I am having a billing company install their password management script on the server but they need the absolute location to the .htpasswd file. I can't find it or the .htaccess file. Would it be easier to unprotect the /exclusive directory and create the .htaccess file in notepad? If this is done, where should I place the .htpasswd file? -jw

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• SQL Import to update existing records?

  - by Kenundrum

  I've got a table in a database that contains costs for items that gets updated monthly. To update these costs, we have someone export the table, do some magic in excel, and then import the table back to the database. We're running MSSQL 2005 and using the built in SQL Management Studio. The problem is that when importing back into the table, we have to delete all the records before we import or else we'll get errors. The ideal situation would be for the import to recognize the primary keys and then update the records instead of trying to create a second record with a duplicate key- halting the import. The best illustration of the behavior we're trying to get can be found at http://sqlmanager.net/en/products/mssql/dataimport/documentation/hs2180.html the update or insert example. Is something like this possible with the built in tools or do we have to get third party software to make it happen?

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• Agile sysadmin and devops - How to accomplish?

  - by Marco Ramos

  Nowadays, agile systems adminitration and devops are some of the most trending topics regarding systems administration and operations. Both these concepts are mainly focused on bridging the gap between operations/sysadmins and the projects (developers, business, etc). Even if you never heard of the devops concept, I'm sure that this topic is your concern too. So, what tools and techniques do you use to accomplish devops in you companies? I'm particularly interested in topics like change management, continous integration and automatization, but not only. Please share your thoughts. I'm looking forward to read your answers/opinions :)

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• Plugging GlusterFS and Openfiler together

  - by lpfavreau

  Has anyone had experience plugging GlusterFS and Openfiler together or something similar? Here is the motivation: Disk space on multiple server regrouped using GlusterFS Centralized access using LDAP/AD and quota management using Openfiler as the GlusterFS client SMB/CIFS server for easy sharing to multiple users on Mac and Windows I know I can have Gluster installed on Openfiler (rPath Linux) successfully but Openfiler seems to be very picky on what it can use as a shared drive. Mounting the Gluster volume inside an existing share does not seem to allow quotas with the mounted folder free space. If this is not possible, is there any alternative to give the same capabilities?

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