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• Problems with kickstart script, partition info crashes deployment

  - by tore-

  Hi, Currently testing cobbler, but have problem with the kickstart script when the partition information is loaded. Here is my ks: http://pastebin.ca/1824343 I can't figure out what is the problem with the partsection at all. Without it, it works. I've even tried autopart. If the entry is removed, it works, but of course I have to provide the installer with partition information. Under the kickstart an python exception is raised. I get a Errno 2 No such file or directory. My Apache logs states: File does not exist: /var/www/cobbler/links/CentOS-5.3-x86_64/images/updates.img File does not exist: /var/www/cobbler/links/CentOS-5.3-x86_64/disc1 File does not exist: /var/www/cobbler/links/CentOS-5.3-x86_64/images/product.img But without the part information, no error occours. What am I not seeing? Cobbler 2.0.3, imported the CentOS 5.3 x86_64 DVD, PXE booting from a Xen guest.

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• Samba Domain Controller corrupts Windows workstations profiles?

  - by MrZombie

  Oooooook, so here's my problem. I have a Mac OS X Server 10.5 to which Windows XP workstations are bound. I happened upon some errors and warnings in my log, from Userenv. Namely, error 1504, 1509. The warning complains that some setting on the share about offline caching. I found some guides to correct this if the problem was referring to a Windows server, but since those are Samba shares, the guide of course doesn't apply. Does anyone know what to do so that my profiles don't corrupt, and I still can use roaming profiles so that they're backed up by the server?

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• Configure Nagios To Alert Depending On Host Group That Service Alert Originates From

  - by StrangeWill

  So my setup: Services are shared between all hosts (CPU/RAM/Disk/Services). Hosts are split into two main groups: "Production" and "Development". We have two contact groups: "Production" and "Development". Lets say my development SQL server runs low on RAM, I want it to only alert those in "Development" contact group (this service is of course assigned to a host in the "Development" host group, using the shared RAM monitoring service). I'm pretty much stumped on this... I can't configure it at the service level (they're shared there), and I can't seem to get escalations to do it for me either... Do I need to use service groups along with escalations and bite the bullet on building that list? Or am I missing something stupidly simple? I'm using Centreon for configuration if that helps.

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• Linux file association

  - by Mgccl

  With a desktop environment, there are file associations that goes with it. I'm a minimalistic user, who doesn't use any of such, but still want some kind of file associations to ease my burden. So I'm searching for a program that does something like the following. open file.pdf this will look at the extension, and translate to okular file.pdf. Of course one can always write a bash script to do this. I wonder if there is something existing, so I don't reinvent the wheel.

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• Unable to uninstall SQL Server express

  - by Joel Martinez

  When I try, I receive the following error message: A computer restart is required. You must restart this computer before installing SQL Server. Of course, I have restarted the computer :-) I'm not really sure how to proceed. The version that sql server reports when I query it is: SQL Server 10.0.1600.22 - RTM (Express Edition with Advanced ) Solved: As it turns out, I had to end up uninstalling logitech's quick cam pro software. Although the fix below did not directly resolve it, the value of that registry key led me to discovering the solution by querying for it online :-) thanks!!!

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• GPO best practices : Security-Group Filtering Versus OU

  - by Olivier Rochaix

  Good afternoon everyone, I'm quite new to Active Directory stuff. After upgraded Functional level of our AD from 2003 to 2008 R2 (I need it to put fine-grained password policy), I then start to reorganized my OUs. I keep in mind that a good OU organization facilitate application of GPO (and maybe GPP).But in the end, it feels more natural for me to use Security-group filtering (from Scope tab) to apply my policies, instead of direct OU. Do you think it is a good practice or should I stick to OU ? We are a small organisation with 20 users and 30-35 computers. So, we got a simple OU tree, but more subtle split with security-groups. The OU tree doesn't contain any objects except at the bottom level. Each bottom level OU contains Computers,Users, and of course security groups. These security groups contains Users & Computers of the same OU. Thanks for your advices, Olivier

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• Torrents: Can I protect my software by sending wrong bytes?

  - by martijn-courteaux

  Hi, It's a topic that everyone interests. How can I protect my software against stealing, hacking, reverse engineering? I was thinking: Do my best to protect the program for reverse engineering. Then people will crack it and seed it with torrents. Then I download my own cracked software with a torrent with my own torrent-software. My own torrent-software has then to seed incorrect data (bytes). Of course it has to seed critical bytes. So people who want to steal my software download my wrong bytes. Just that bytes that are important to startup, saving and loading data, etc... So if the stealer download from me (and seed it later) can't do anything with it, because it is broken. Is this idea relevant? Maybe, good torrent-clients check hashes from more peers to check if the packages (containing my broken bytes) I want to seed are correct or not? Thanks

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• Resolving DNS queries for two disconnected, private, networks

  - by Mikeage

  I'm trying to setup two PCs (one Windows, one Linux, but my understanding is that this problem is more DNS and less OS) as follows: Home network: 192.168.1.0/24 VPN (via OpenVPN server not within the home network): 192.168.2.0/24 . I would like a PC on both networks to be able to access three different types of site: Internet addresses Addresses on the home network Addresses on the vpn However, I'm not sure how/which DNS servers to use. If I prioritize my home DNS server, I can resolve (1) and (2), but not (3). If I prioritize my VPN DNS server, I can't resolve addresses of type (2). Of course, looking up addresses via nslookup and explicitly setting the correct server works, so I know my local DNS servers are OK. Is there any way I can set up my PCs to fallback on the second DNS server if there is no response? Alternatively, is there any way I can tell different queries to go to different servers [maybe by setting up different subdomains; foo.local.something vs. bar.vpn.something]? Thanks

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• How do I use an internal SSD as a scratch disk for FCP X?

  - by andrewb

  I'm contemplating setting up my MacBook Air as a video editing machine. If I do this, I'll upgrade to a 256 GB SSD, and I should be able to keep around 100 GB or more free for video editing. The video files would of course be stored externally, but save purchasing some expensive Thunderbolt RAID device (which I suppose is gradually becoming more of an option), it will be slow for read/writes. How can I have a set up where I take advantage of my SSD's speed for a scratch disk/cache for FCP X, but still have the TB(s) of storage of externals? I don't want to have to be moving files constantly back and forth, this is about saving time not wasting it.

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• Ubuntu not connecting to network in Hyper-V

  - by soandos

  I am unable to connect the Ubuntu guest (both 12.10 and 12.04) to the internet via hyper-V. Here is what I have done so far (with much thanks due to @Kronos's blog post on the topic): Created a switch in the switch manager with connection set to external, selected my wifi card (Intel Centrino Ultimate-N 6300 AGN). If it matters, the Microsoft Filtering Platform is checked under extensions. Added this switch to my Ubuntu guest. I also tried a different wireless card (Aethros 9285) same issue. Connecting through my wired card works just fine (assume that I select that card, and I am wired in of course). Making it a legacy network adapter does not fix the issue. Ubuntu can see this connection, but is unable to connect to it. What follows is what I attempted to do to get Ubuntu to connect: Start and restart the network manager Restart the machine Verify that it could in fact see the adapter (resulted in device not ready a few times) How can I get this to work properly?

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• Issue varnish purge through CloudFlare to Varnish

  - by Michael

  I've been working on this for a while and can't seem to find any solution. I have varnish sitting in front of my nginx server, with CloudFlare sitting in front. When I issue a curl -X PURGE host CloudFlare picks it up and of course denies it with a 503 error. If I use direct.host to bypass CloudFlare it hits the Varnish server and it accepts the request but it does nothing since direct.host isn't used so there is nothing in the cache for that url. I am using WordPress and there is a WordPress Varnish Purge plugin, it says to add the following line to wp-config.php: define('VHP_VARNISH_IP','127.0.0.1') This is specifically to work with proxy servers and/or CloudFlare to make sure the request goes to the Varnish server rather than CloudFlare, but that doesn't seem to help. Anyone see this before and have any idea?

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• Kerberos SSO browser integration?

  - by MrZombie

  I'm installing a bunch of web apps for the office, and one of the wants would be Kerberos-managed SSO. Now, I have found some information on the matter, and I wondered, what browsers integrate Kerberos SSO? Of course I could just use the underlying web app to authenticate in case of lack of Kerberos capability, which is exactly the plan, but I'd like to know which browsers would work for that, so I can plan ahead and decide if it's even worth it to do that, which I believe it would considering that one of the web apps I'm implementing will be an ERP.

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• Slab uses 88Gb of 128Gb available. What could cause this?

  - by Joris Meys

  We run a debian 2.6.26-2-amd64 x86_64 GNU/Linux on a server with 128 Gb. Recently it our available memory became rather low. Looking at the /proc/meminfo showed that the Slab was using 88Gb, which is counted in the used memory off course. Is this a problem? I suspect that memory will be freed when necessary, but I don't know if that could have unwanted side effects. Why would Slab need that much memory? Is there a clear cause for that? can we avoid this to happen in the future? How can we free this memory? thank you in advance > cat /proc/meminfo MemTotal: 132304500 kB MemFree: 26669388 kB Buffers: 237504 kB Cached: 11881136 kB SwapCached: 48 kB Active: 5244640 kB Inactive: 11714308 kB SwapTotal: 5751228 kB SwapFree: 5750436 kB Dirty: 24 kB Writeback: 0 kB AnonPages: 4840256 kB Mapped: 163968 kB Slab: 88314840 kB SReclaimable: 88275644 kB SUnreclaim: 39196 kB PageTables: 80852 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 71903476 kB Committed_AS: 6818332 kB VmallocTotal: 34359738367 kB VmallocUsed: 505724 kB VmallocChunk: 34359231963 kB

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• Any Way to monitor JMX Servers with NetIq ?

  - by Carlos

  I ask this question after a search in the site, there's many JMX questions but I think no one with a NetIq involved. In the documentation of NetIq, There's no "module" to check JMX, but I have seen that u can make "custom" modules and "custom" scripts, in Perl and VbScript. The question is if anyone with more experience than me on NetIq, has made any custom script or module to check JMX. I look on technet too, for a JMX Api for Windos Shell or Powershell with no luck. Of course, JMX is much more powerfull, but what I really need is to "monitor" some values inside NetIq, because we cant install Nagios, Cacti, Hyperic or any other monitor software but NetIq. Thanks.

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• Configuring home wireless network

  - by dvanaria

  I'm new to setting up a home wireless network. I have Comcast tv/internet/phone service (modem included) as well as a wireless router. My question is pretty basic. How can I tell the performance of the following parts of the network? 1. incoming internet speed 2. speed of the modem 3. speed of the wireless router I basically want as fast an internet connection as possible, of course, but I'm not sure where to look for the bottleneck (and so, not sure where I can spend some money to speed things up). Right now I'm getting about 36 Mbps (as it shows in Windows). If I run an online speed test (xfinity has one) it shows Average download speed of 14.91 Mbps and Average upload speed of 5.72 Mbps. Thanks for your help.

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• Problems locating Redmine database

  - by zordor

  I have an active redmine but I can not find the database where it is running right now. It should be on PostgreSQL but the database where it should be running is empty. Does anybody have any idea how to check current database used by redmine? Please let me know if you need any extra information. Thank you EDIT: Ok I know the database it is using. On the database.yml I have project_redmine but it is using the database project I dont know why. That database it is used by developers for the actual project. So that is getting me problems of course. I am unable to run it on the right DB (project_redmine) any ideas? :S

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• 64bit or 32bit Linux system?

  - by Milan Babuškov

  I have a server that has 4GB of RAM. On it, I have installation of 32bit Slackware Linux 12.1. Of course, it is not using all of 4GB of RAM. I'd soon like to increase the RAM to 8GB, and am looking for a way for the system to use it. The system is used as a database server and is under high load during the day. AFAICT, I have two options: stay with 32bit and rebuild the kernel and lose some performance. Or go with 64bit and reinstall everything. Looking at 64bit versions of Slackware, I could run -current or Slamd64. Now, on to the questions: Should I stay with 32bit or go with 64bit? If I go 64bit, should I use -current or Slamd64? P.S. I hope to get answers from someone actually using any of these configurations in production, not just copy/paste something I could find myself via Google.

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• Re-Route Mail to a port other than 25

  - by Ken

  Is there a way to route mail to another port? I have an email account attached to my laptop that I'd like to be able to send and receive mail from. Due to mobility, I'll be passing through various networks that will probably block this port. My dynamic DNS provider allows me to utilize web-forwards for MX domains; is this possible? where I can web forward to a domain:port which is managed by my DNS provider when I traverse between networks. If not, is there a way? Of course i could use web-mail or relay-forwarding from my home server, but that's not geeky enough.

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• ClearOS - how to avoid getting stuck at a fsck message at boot?

  - by Scott Szretter

  I have had this happen a couple times - I have a ClearOS Enterprise 5.2 box, and due to a power outage or similar, it ends up showing an error at boot and saying that fsck needs to be run (I think it said with (or without?) the -a parameter). The problem is, I need this box to be headless, at a remote location (miles away)! SO, I need to come up with a solution on how to either have it automatically repair itself, without someone to be present with a monitor and keyboard. Another possibility is to simply avoid the issue all together - maybe there is something that can be changed so it's very unlikely to happen (I am unable to avoid the power outage of course - at least not practically). Finally, maybe it can be boot off a read only media (cd) or file system or similar? At least the base OS, so that it would always at least boot with enough configuration that might allow remote access, or basic connectivity?

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• Are there any 5.1 surround audio switches on the market?

  - by thepurplepixel

  (Somewhat related to this question) I have a set of Logitech 5.1 surround speakers, which use 3 stereo 3.5mm TRS connectors (minijacks) to transfer the audio (the typical green/black/orange audio outputs). I have a Griffin Firewave hooked up to my MacBook Pro, and my desktop has a Realtek ALC889 audio chipset. I have looked for a way to, essentially, switch the speaker inputs between my Firewave and my desktop without having to disconnect the cables from one, route them around my desk, and plug them into the other. I'd love to have something like an old Belkin DB-25/LPT switch, but for these audio cables. Of course, purchasing one and soldering my own cables on the connection terminals is always an option, but, is there a reasonably priced 5.1 audio switch (or 3x stereo) on the market that will accomplish the simple task of switching audio outputs between two computers into a set of 5.1 speakers? Thanks in advance!

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• What are the pros/cons of blocking a program from running in %appdata%, %temp%, etc.?

  - by poke

  While researching ways to prevent CryptoLocker, I saw a forum post that advised using Group Policy Objects (GPO) and/or antivirus software to block run access in the following locations: %appdata% %localappdata% %temp% %UserProfile% Compressed archives Obviously, anything written in a forum should be taken with caution. I do see advantages to do doing this, though, primarily because malware likes to execute out of these locations. Of course, this could impact legitimate programs as well. What are the drawbacks to blocking run access to these locations? What are the advantages?

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• Horde complains that Imp is not running

  - by Eric J.

  I'm a mostly-Windows guy tasked with setting up email on an Ubuntu 12.04 instance at AWS and hit the following error: When I browse to Horde, after entering my administrative credentials, I get the error message: A fatal error has occurred imp is not activated. Details have been logged for the administrator. I am following the following, quite detailed guide http://www.exratione.com/2012/05/a-mailserver-on-ubuntu-1204-postfix-dovecot-mysql/ This is happening at Step 20, at the text Now fire up you web browser and navigate to your server at http://mail.example.com/ to verify that you can log in as the configured administrative mail user. (of course I used my actual domain). Questions Where is Horde logging the "details"? Any thoughts on why this might happen? I found Google hits suggesting that php5-mcrypt might be missing, but I verified it is installed and up-to-date in my case.

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• VPN server to access Samba4

  - by VisionIncision

  On my network I have an Ubuntu 12.04 server running Samba4, my domain is fully configured and functional. Now, I would like to enable VPN access over the internet, and have another box to do so. I have been searching on the internet for guides and information etc, but have not been successful. I have however found this guide http://www.howtogeek.com/51237/setting-up-a-vpn-pptp-server-on-debian/ but was wondering if I could adapt it somehow to enable access to my DC services. EDIT: I would need to authenticate my VPN server with my DC, if that is possible of course. Any insight would be wonderful. Regards, Jack Hunt

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• How do special folders work on Windows 7?

  - by Martin

  Hello, I did something silly and accidentally moved my my special folders (My Documents, My Music etc.) to the Desktop. Once I noticed my mistake I quickly moved them back. But now my System acts erratically. It continuously creates new empty folders on my Desktop. And I have now two folders named "My Pictures" in my home directory. One of which is magically linked to the one in Desktop while on the command line one one is actually visible. If I delete the superfluous folders on Desktop then the explorer crashes. It is all a big mess. Of course I checked HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\User Shell Folders and it looks all ok there. So here the question: As anybody got any informations on how Windows 7 handles the special folders which might help be clean up the mess? I am well versed in using both the command line or the registry editor.

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• What kind of storage do people actually use for VMware ESX servers?

  - by Dirk Paessler

  VMware and many network evangelists try to tell you that sophisticated (=expensive) fiber SANs are the "only" storage option for VMware ESX and ESXi servers. Well, yes, of course. Using a SAN is fast, reliable and makes vMotion possible. Great. But: Can all ESX/ESXi users really afford SANs? My theory is that less than 20% of all VMware ESX installations on this planet actually use fiber or iSCS SANs. Most of these installation will be in larger companies who can afford this. I would predict that most VMware installations use "attached storage" (vmdks are stored on disks inside the server). Most of them run in SMEs and there are so many of them! We run two ESX 3.5 servers with attached storage and two ESX 4 servers with an iSCS san. And the "real live difference" between both is barely notable :-) Do you know of any official statistics for this question? What do you use as your storage medium?

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