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• script Disk Management configuration

  - by Joseph

  I have 10 workstations with large monitors that have USB slots and several card readers built in. The card readers cannot be disabled and will map to drive letters when I image the computers. I go into Disk Management and delete the drive mappings and add mappings to a single folder in C:\ with a folder for each slot. I have to do this because of scripts that run that are expecting specific letter drive mappings to network resources. Is there a way to script the deleting and adding of drive mappings instead of having to use the Disk Management GUI manually on each workstation? The workstations are running XP Professional.

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• There is not enough space on the disk when there is?

  - by Lee Tickett

  Permissions are fine (inherited) and checking effective permissions everything is AOK. As you can see i can make a file in the docs folder but not the pdf_docs subfolder. The folder has a lot of files and is quite large- i wonder if i've reached a limit? I couldn't find anything on google. Size: 51.0 GB (54,819,804,885 bytes) Size on disk: 52.0 GB (55,925,719,040) Contains 554,697 Files EDIT I've just checked and i can delete files... and for every file i delete i appear to be able to create a new one. This definitely points toward a limit in terms of number of files?

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• How can I set up VLANs in a way that won't put me at risk for VLAN hopping?

  - by hobodave

  We're planning to migrate our production network from a VLAN-less configuration to a tagged VLAN (802.1q) configuration. This diagram summarizes the planned configuration: One significant detail is that a large portion of these hosts will actually be VMs on a single bare-metal machine. In fact, the only physical machines will be DB01, DB02, the firewalls and the switches. All other machines will be virtualized on a single host. One concern that has been is that this approach is complicated (overcomplicated implied), and that the VLANs are only providing an illusion of security, because "VLAN hopping is easy". Is this a valid concern, given that multiple VLANs will be used for a single physical switch port due to virtualization? How would I setup my VLANs appropriately to prevent this risk? Also, I've heard that VMWare ESX has something called "virtual switches". Is this unique to the VMWare hypervisor? If not, is it available with KVM (my planned hypervisor of choice)?. How does that come into play?

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• Deleting pagefile.sys on shutdown

  - by Daniel E. Shub

  I have a Windows XP machine (it is a VM running in Xen) that I would like to backup. I have enabled ClearPageFileAtShutdown by following MS KB 314834. If I cleanly shutdown the XP machine and then mount the drive in another machine (which is trivial since the machine is virtual) I still have a large pagefile.sys. I was hoping that enabling ClearPageFileAtShutdown would result in a pagefile.sys with a size near zero. I have two questions. First, is it possible to have pagefile.sys be deleted, or have a drastic size reduction, at shutdown? Second, can I exclude pagefile.sys from my backup?

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• HP ProBook 4540s - Can't find HP Protect Tools to activate fingerprint reader

  - by CandiM

  I got an HP ProBook 4540s in December--When I first got it, every time I booted up, there was a rather large icon, almost like a Windows 7 gadget, to access HP Protect Tools, but I had too much going on to mess with it right away and kept clicking on something like "remind me next time I log on" and determined to get acquainted with it after the holidays--But at some point in time, that icon went away and now I can't locate it at all-- I'd like to try, and probably use, the fingerprint reader and explore whatever else is among the Protect Tools, but now I can't find them or any folder or .exe to acceess them-- Can anyone help me find them?-- Thanks so much

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• using nmap to guess remote OS and probe service details on a single port only

  - by WoJ

  I am looking at scanning with nmap a large network in order to identify the OS of devices (-O--osscan-limit) probe for details of a service on a single port (I would have used -sV for all open ports) The problem is that -sV will probe all the ports (which I do not want to do for performance reasons) and I cannot use -p to limit the ports to the one I am interested in as this impacts the OS fingerprinting. I could not find anything in the manual to limit the service probing. Thank you for any ideas (including other approaches outside of nmap, though I would prefer to stick to nmap)

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• Sun Grid Engine (SGE) Jobs Not Visible After Adding virtual_free

  - by Gary Richardson

  I'm trying to to use virtual_free to limit the number of large memory jobs running each grid node in my cluster. This seems to be working as expected. After I modified my code to submit jobs with the memory instances, qstat -f -q $queueName no longer shows a list of jobs waiting for a slot. The jobs are submitted with a specific queue (-q $queueName). I'm guessing this is happening due to the magic of SGE queue selection. Is there a way to make my jobs show up as before? Thanks! UPDATE I'm using: qstat -f -u * -q $queueName to view the queue. If I drop the queue argument, I can see the jobs. If I examine a specific job, I can see that it has the correct hard_queue_list value set. I'm also using Sun Grid Engine 6.1u4

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• Weird (?) issue with Exchange Forwarding

  - by abszero

  Hello everyone. Here is the long and short of it: the company I work for was purchased by another company who uses Gmail for domains as their email provider. We use an in house Exchange box. No big deal, I dropped into Active Directoy and created several Contact objects that represented our new email addresses at Gmail. I then went through each employees record and have their mail set to forward to this new address and not deliver locally. So I am forwarding email for me@domain1 to me@domain2 and this works great as long as I don't send an email from me@domain2 to me@domain1. If I log into my personal Gmail account and send an email to me@domain1 the email is properly forwarded to me@domain2. The mail coming from me@domain2 to me@domain1 seems to just get lost in the ether. Have I done something wrong or is this a quark with Exchange? Thanks!

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• Eventlog entry for allowed connection in Windows Firewall

  - by Jaap

  I was seeing a lot of entries in the eventlog: The Windows Filtering Platform has permitted a connection. Application Information: Process ID: 4 Application Name: System Network Information: Direction: Inbound Source Address: 10.xxx.xxx.xxx Source Port: 80 Destination Address: 10.xxx.xxx.xxx Destination Port: 31773 Protocol: 6 Filter Information: Filter Run-Time ID: 67903 Layer Name: Receive/Accept Layer Run-Time ID: 44 We have a loadbalancer which checks every second to see if the application is still running (a health check). The logs contain large amounts of this kind of entries, which makes the Event Viewer slow and it's difficult to find the more interesting logs. How do I make sure these messages don't end up in the event logs?

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• Diagnosing extremely slow network operations.

  - by Chris Becke

  The network: * A windows 7 PC with 2 NICs - one connected to an old style ethernet hub - the other to the internet - with internet sharing enabled * An Apple iMac connected to the hub, successfully utilizing the ICS to access the internet. My problem: Using the Mac, copying from the internet is fast. However, if I connect to a SMB: share on the Windows 7 PC and try and copy anything a few kb the copy operation is appallingly slow with my network card using the Windows 7 control panel showing ~.1% utilization. The NICs are 100Mbs and show a 10x larger throughput (now ~1%) if I download large files over the internet using the Mac. WTF?

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• PHPMyAdmin - Can I view actual field values instead of the foreign keys?

  - by Callum

  I have a database with some MyISAM tables. The tables contain foreign key relationships, but they are not inherently "enforced" (I believe "referential integrity" is the term). Using PHPMyAdmin, what I'd like to do is be able to view records from the tables but have all foreign keys replaced by whatever value they are representing. Eg, instead of seeing: 23 | 14 | $6.50 I'd like to see.. Extra Large | Thin Crust | $6.50 ($6.50 would be an editable field, the first two fields would not be). Any helpers? Thanks.

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• Using Powershell's Invoke-command to install .exe on remote computer

  - by Bernie

  I have an .exe I would like to install on a large farm of Windows Server 2008 computers. I am attempting to use Powershell remoting. I have this command which works locally: invoke-command {& "N:\Temp\fortify_installer\HP-Fortify-3.20-Analyzers_and_Apps-Windows-x86.exe /s /f1N:\Temp\fortify_installer\response.iss"} But when I add the -computername flag it seems to go off to nowhere, and the installer is never run on the remote machine. I can launch notepad.exe via the same command and it runs. Does it have something to do with it being an installer, or something else? I realize many versions of this question have been asked and I have read them, but I am still confused as to why this doesn't work.

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• Access points fighting for dominance?

  - by Phillip Oldham

  We have a small office with a large number of wireless devices (a mixture of desktop machines, laptops, and wifi-enabled phones) all working from a single Apple Airport Extreme which extends our wired network. I've added another Airport Extreme for resiliency, since we've been seeing a decrease in performance and (as far as I understand) access points can only handle a small number of clients. I set the new AP to extend the current network so that the clients weren't constantly switching between different wireless networks, however as soon as this AP was configured all the wireless devices started seeing network trouble, flicking on and off. I'm assuming that this is because both APs are reasonably strong, and the client can't decide which to use. What is the best route to follow to resolve this? What I'm aiming for is wireless resiliency; preferably having two APs share the network load, or if this isn't an option then having a primary AP with a "fail-over", should the primary go down for any reason.

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• Is SCCM overkill for medium-sized organizations?

  - by Le_Quack

  I am an IT technician in a high school with around 1600 students 250 staff and 800+ client computers mostly running Windows 7. Our team is composed of three members. My boss seems content with a network that works (just about) not necessarily a productive well maintained network that is easy to run and maintain. I'm still fairly early on in my I.T. career so I'm not up to speed on all the different endpoint management solutions that are available. I'm looking for a better way to manage clients (deploy software, track changes, inventory etc) I like the look of SCCM 2012's features but the case studies seem to be aimed at large multi-site infrastructural rather than a single mid sized site. Is SCCM suitable for a mid sized single site or is it aimed at much larger corporations? How can I determine whether or not an endpoint management solution like SCCM is a good fit for our organization? EDIT: Thanks for all the help I'll take a look at SCE and SCCM and get some proposals drawn up to take to my boss/deputy head

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• how to copy sql server database on same server

  - by Sam

  I've got a SQL Server 2008 and want to make a copy of a database so I've got a 2nd Version of the database for testing on the same server. The database copy wizard is not able to copy the database, it always sends funny error Messages about missing objects (using SMO copy). When I try to make a backup and restore it under a different database name it still keeps the file names of the original database and overrides this (crashing the original database). So how do I copy a SQL database? Shutdown SQL Server, copy the physical files and attach them? Maybe a command line tool for database copy? Shouldn't there be an easy way to make a copy?

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• Using MongoDB + Redis + Apache on the same server in production?

  - by Dayson

  I intend to launch my web app using a 8 GB VPS. It uses MongoDB + Redis for storage/caching and Apache + PHP-FPM for serving requests. Could there be any issues with running Mongo + Redis + Apache on the same server? Would it make more sense to setup 2 x 4 GB VPS servers and keep Mongo on one and Redis + Apache on another? Should I just start with one server and worry about scaling horizontally later by delegating the existing server to Mongo in the future (due to its large RAM) and moving the web servers on to multiple smaller VPS'?

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• Can I disable certificate error/warning in Firefox/Chrome/Internet Explorer?

  - by Poni

  Exactly as the title says; I don't mind which browser, I just want to type "https://........" and see the page normally without any certificate error, knowing that I might risk myself by allowing an invalid certificate! It seems like every browser producer thinks he knows better than me, the Super User !! =) Now, does anyone know how to remove warning/error related to this? In any of these browsers (Firefox/Chrome/Internet Explorer/[you-may-suggest])? Oh, and don't advise me a workaround like adding to exceptions. Please don't mention that. I'd highly appriciate a concise & precise answer! Edit: The answer I seek concerns ONLY the browser. No third-party objects to be used.

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• What causes memcache to delete keys?

  - by Arkaaito

  Our memcache install recently started removing keys, and we're not sure why. Large groups of keys vanish at the same time. Memcache reports that evictions are low to non-existent, and our app has no way to clear memcache (it can only delete specific keys). Even keys of which the app has no knowledge get deleted, so we're pretty convinced they're getting expired. However, our memcache configuration hasn't been touched in some time. Has anyone debugged an issue like this before, and if so, are there any steps you'd recommend we take? How flexible is memcache's expiration policy - is it possible that we're suddenly running into a criterion based on (say) write frequency to a key?

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• Windows server 2008 UPS support

  - by Rory McCune

  I'm looking to set-up a UPS on a Windows Small Business Berver 2k8 and I've noticed that there are some large price differences for similar capacity in-line UPSs. The most important point for me in UPS selection is that the server should have the ability to shut itself down before the UPS power runs out, so that if the server is unattended during the outage, it should minimize the risk of data loss. From some reading it appears that Windows Server 2008 should has the ability to natively recognise a UPS, which can then be managed through the battery settings on the server or via WMI. What I'm wondering if anyone know is, Is Windows 2008 servers UPS support specific to certain brands of UPS (eg, APC) or is it likely to work with any UPS which has a USB port, which I can connect to the server?

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• PostgreSQL disaster recovery options

  - by Alex

  My customer has quite a large (the total "data" folder size is 200G) PostgreSQL database and we are working on a disaster recovery plan. We have identified three different types of disasters so far: hardware outage, too much load and unintentional data loss due to erroneously executed bad migration (like DELETE or ALTER TABLE DROP COLUMN). First two types seem to be easy to mitigate but we can't elaborate a good mitigation plan for the third type. I proposed to use ZFS and frequent (hourly) snapshots but "ZFS" means "OpenIndiana" these days and our Ops engineers do not have much expertise in it, so using OpenIndiana imposes another risk. Colleagues try to convince me that restoring from PostgreSQL PITR backup can be as fast as restoring from a ZFS snapshot but I highly doubt that replaying, say, 50G of archived WALs can be considered "fast". What other options are we missing? Is ZFS an only viable alternative? Can we get a fast Pg DB restore time in the Linux environment?

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• Weblogic Threads Usage

  - by Hila

  I have an application deployed on WebLogic 10.3, which exhibits a strange behavior. I am running a constant (not too high) load on my application (20 concurrent users, running a light activity). The response time is reasonable (well below 100ms after the application stabilizes) Memory consumption seems fine (My application creates a lot of short-living objects, but they are garbaged collected so the overall memory consumption stays under 500 mb). Threads stats seem healthy as well: And yet, after I leave my test running for a while, more and more execute threads ("[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'") are created, until eventually the application crashes: This test hasn't been running for a long time (All the new threads that you don't see in the first screenshot were created while I was writing this question), and I've seen much more threads being created. Any idea why these threads are being created?

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• IE9 HANGS: jquery based webapp hanging ONLY with IE9

  - by Daniele B

  I'm stuck on this issue since days... This is the site I'm talking about. It is a webapp which makes large use of backbone, visualsearch, jquery plugins. This website is not working at the moment with IE8, but it's fine that it works with IE9...if just it would! What happens is that the website hangs when loaded ONLY with IE9 and (this is bizarre!) if the profiler tool of IE9 developer tools is ON it doesn't!! It also happens to oher people (I was notified of that) so I'm pretty sure it's not an issue linked to my browser settings. It makes me think about an error which has something to do with delays, or iterative functions which, in presence of profiler, are forced to delay bte cycles and so to leave free time slots to other functions which render the page. I can update with more details if needed. thanks.

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• Reinstall linux over ssh.

  - by DoomStone

  Hello I'm having a large problem with our development server, it have had a program called Webmin + a total idiot have been administrating the Linux sever. Witch now have resulted in the server being totally trashed, there are so many different kinds of the same program install that anything doesn’t work. And don't get me started on the users and groups :D Well at last I have been given the responsibility to administrate our development server. But I would like to start from scratch, instead of trying to find every single package and config the previous admin have **ed up. But the problem is that it is a remote hosted server with ssh access. The server is running Debian, but i am thinking of reinstalling it with ubuntu server Thanks

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• Plesk 9.2.1 reporting much more SMTP traffic than the logs indicate

  - by Eric3

  Plesk is reporting nearly 7GB of SMTP traffic so far this month on one domain, most of it outgoing. However, after running qmail's mail logs (which only go back to May 8) through Sawmill, only about 900MB of traffic on that domain is accounted for. What I know so far: Email sent via PHP's mail() function is sent through sendmail, which has been logging its output via syslog to the same logs that qmail uses, at /usr/local/psa/var/log/ Messages sent by logging in directly via Telnet are logged as well I verified that Plesk is reporting totals correctly by creating a new domain, sending some large emails through it, running Plesk's statistics calculation script, and comparing its reported totals to the actual size of the emails sent The problem domain did have three mail accounts with blank or insecure passwords, which I corrected Does anyone know how Plesk calculates SMTP traffic statistics? Are there some log files elsewhere that I'm missing? What kind of SMTP traffic would Plesk know about that isn't being logged?

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• How to tell if linux disk IO is causing excessive (> 1 second) application stalls

  - by noahz

  I have a Java application performing a large volume (hundreds of MB) of continuous output (streaming plain text) to about a dozen files a ext3 SAN filesystem. Occasionally, this application pauses for several seconds at a time. I suspect that something related to ext3 vsfs (Veritas Filesystem) functionality (and/or how it interacts with the OS) is the culprit. What steps can I take to confirm or refute this theory? I am aware of iostat and /proc/diskstats as starting points. Revised title to de-emphasize journaling and emphasize "stalls" I have done some googling and found at least one article that seems to describe behavior like I am observing: Solving the ext3 latency problem Additional Information Red Hat Enterprise Linux Server release 5.3 (Tikanga) Kernel: 2.6.18-194.32.1.el5 Primary application disk is fiber-channel SAN: lspci | grep -i fibre 14:00.0 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03) Mount info: type vxfs (rw,tmplog,largefiles,mincache=tmpcache,ioerror=mwdisable) 0 0 cat /sys/block/VxVM123456/queue/scheduler noop anticipatory [deadline] cfq

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