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• How to create a Linux Media Server using Ubuntu?

  - by Thomas

  Hello all: I'm an intermediate Linux user and a relative beginner to servers. I would like some help finding resources on setting up a basic server. I have Googled, and am a member of the Ubuntu Forums, but just figure it can't hurt to ask the Stack Overflow community for help as well. I plan on installing on an old laptop (Lenovo Thinkpad R61i or Toshiba Satellite A105). I have downloaded the latest Ubuntu (9.10) but don't know how to do any of the configurations. I just want a server to store my files where I can access (download and/ or stream) from a browser. Any help you can give is greatly appreciated. Thanks! Thomas

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• HELP! need to make a VoIP program for WiMAX in NS-2 work..

  - by janiemack

  I've been trying to get this working for the past 2 days and i'm completely stuck. I'm trying to make a simple VoIP program work in the NIST module for WiMAX http ://community.4gdeveloper.com/attachments/download/14/090720150504_ns2-Release-2.6.tar.gz version 2.6 , using NS-2.31 (remove space btw 'p' and ':' ) http ://downloads.sourceforge.net/nsnam/ns-allinone-2.31.tar.gz?modtime=1173548159&big_mirror=0 (remove space btw 'p' and ':' ) The installation process goes fine. When i run this program, I'm getting an error saying " OFDMAPhy : error did not find match for permutation and bw combination" Some help would be really appreciated. thanks!

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• Migrate reports from MS Access to OOo Base

  - by John Gardeniers

  I'm currently looking at upgrading our office machines from Office XP to Office 2010. For most users the standard edition is fine but just a few of us use Access. There are only a couple of standalone Access databases but the program is used fairly extensively (mostly by myself) as a front end to MySQL. As the cost different between standard and pro versions of Office 2010 is about $170 (AUD) I'm looking at possible alternatives to Access. I'm no huge fan of Open Office but could be convinced to use it if I can find a way to migrate the many reports we currently have in Access. The data is not a problem. So far I've found nothing to suggest this is even possible/practical but perhaps someone here knows otherwise. I'm also open to suggestions for other alternatives to Access but it must be able to produce flexible reports easily. That is the one real strength of Access in my view. Because of its subjective nature I'm making this community wiki.

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• What is the solid Windows Server 2008 VPS hosting (preferably) in Europe?

  - by Jakub Šturc

  I am looking for Windows Server 2008 VPS hosting to host a few sites/apps with special needs. I spend few hours googling but I am not satisfied with the result. I looks to me that this business is full of crap. Two thirds of the reviews seems to be faked and advertised offers is unavailable or contains some hidden fee. So my question is which VPS hosting with Windows Server 2008 do you recommend? I slightly prefer data center in Europe and euro payment it isn't deal breaker. Note: I didn't made question community wiki because I am interested in answers from users with some reputation and I want to preserve theirs answers.

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• KVM Guest not reachable from host

  - by Paul

  Hello, I'm running Ubuntu server 9.10, installed KVM etc. Created the bridge network following instructions on help.ubuntu.com/community/KVM/Networking Created a windows 2008 guest using virt-install command line (using virt-manager GUI from a remote Ubuntu desktop would not let me select the ISO location). I can however use a remote virt-manager to connect to the guest and complete the windows install. Within windows 2008 I changed the IP address but cannot ping from outside world. The bridge network appears fine - I'm not sure what else to look at! Here is the interfaces file: The loopback network interface auto lo iface lo inet loopback The primary network interface auto eth0 iface eth0 inet manual # auto br0 iface br0 inet static address 60.234.64.50 netmask 255.255.255.248 network 60.234.0.0 broadcast 60.234.0.255 gateway 60.234.64.49 bridge_ports eth0 bridge_stp off bridge_fd 0 bridge_maxwait 0 auto eth1 iface eth1 inet static address 192.168.12.2 netmask 255.255.255.0 broadcast 192.168.12.255 The ip of the windows server is 60.234.64.52 What else should I check? Regards Paul.

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• Simple web-frontend for remote svn administration?

  - by Stefan Lasiewski

  We run a SVN repository. Some of our more advanced users need to be able to perform some SVN administration without relying on the system administrator. They need to be able to do things like create SVN repositories, delete SVN repositories,, and perform commands like 'svnadmin dump' and 'svnadmin load'. We'd like to avoid SSH access on these FreeBSD machines, and would rather provide a service interface through a Web UI. I'm looking for a simple script (or a small number of scripts) which use Perl or PHP. I found svnadmin or svnadmin.pl, but was hoping to find something with a larger user community or which has been recommended by others. It looks like Trac allows SVN administration, but comes with may more features then we need.

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• Debian 6 Internet connection sharing aka IP masquerade not working

  - by Rautamiekka

  The problem: the computers [Xbox 360 and a Kubuntu 12.04.1 laptop] can't access Internet through a recently-installed desktopless Debian 6 laptop (which is wirelessly connected to a WLAN station) but addresses are successfully given by dnsmasq. The attempts: 1.1) /etc/dnsmaq.conf conffed according to http://wiki.debian.org/HowTo/dnsmasq: add lines interface=eth0 dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,12h 1.2) Follow http://www.cyberciti.biz/faq/rhel-fedora-linux-internet-connection-sharing-howto/ and use their script to setup iptables. 2) Follow the Ubuntu Internet Gateway Method (iptables) at https://help.ubuntu.com/community/Internet/ConnectionSharing recommended and which worked at Share internet in Linux. The Debian laptop was rebooted many times and between each attempt, with and without the script auto-executing via /etc/rc.local. While adding the iptables-restore command to that file I disabled the script.

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• How to safely backup MySQL using VSS-based backup solutions

  - by Rhyven

  One of my clients is running MySQL on a Windows Server 2008 system. Their regular backups are performed using StorageCraft's ShadowCopy, which uses the VSS service to perform backups of open files. Some investigation indicates that MySQL is not entirely VSS-aware, and that the tables need to be locked prior to the shadow operation, then unlocked afterwards. There is a post at http://forum.storagecraft.com/Community/forums/p/548/2702.aspx which indicates the steps that need to be performed, however the user had some difficulty in performing them and no follow up solution was ever posted. Specifically, they succeeded in writing a batch file to lock the database, however once the batch file returns from MySQL it drops the connection and thus relinquishes the lock. I'm looking for a method that I can send the MySQL command FLUSH TABLES WITH READ LOCK, then perform the backup, then send UNLOCK TABLES when the backup is complete. Alternatively, I can exclude the MySQL data storage folder from backup, and schedule a mysqldump backup into a folder that will then be backed up by VSS. Can I have some recommendations please?

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• SQL Server Backup modes, and a huge log file

  - by Matt Dawdy

  Okay, I'm not a server administrator, a network guy, or a DBA. I'm merely a programmer helping out a small company. They have IT guy who isn't MS centric (most stuff is on Mac) and he and I are trying to figure out a solution here. We've got 1 main database. We run nightly full backups. I know they are full backups because I can take the latest file, or any of the daily backups, and go to a completely new machine and "restore" the backup to an empty database and our app runs perfectly fine off of this backup. The backups have grown from 60 MB to 250MB over 4 months. When running, then log file is 1.7 GB, and the data file is only 200-300 MB. Yes, recovery model is set to full. So, my question, after all of that, if we are keeping daily backups, and we don't have the need / aren't smart enough to roll the DB back to a certain time, if I change the recovery mode to simple, am I really losing anything? And, if I do change it to simple, will it completely dump the log file or at least reduce it way the hell down? And, will that make our database run faster? I know that it'll make my life easier when I copy a relatively recent backup to my local machine to do development and testing...

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• Can you recommend a robust OpenAPI 2.0 provider?

  - by larsks

  Help me find a robust OpenID 2.0 provider! We're looking at various SSO solutions for our organization, and I would like to suggest OpenID as a viable option, since (a) there is good consumer support in a number of web applications, and (b) it's simpler to implement than Shibboleth, which is the alternative technology. However, this requires that we find a robust OpenID provider, ideally one meeting the 2.0 specification. The only solutions I've come across so far are: Atlassian Crowd This looks great, although the $4000 price tag may make it a tough sell. Community-ID This looks like an interesting idea, but I'm not sure the project quality is at a suitable level (yet). In particular, it's not clear if LDAP support actually works (which will be a requirement in our environment). Have you implemented OpenID in your environment? What are you using? Have you selected an alternative SSO technology?

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• How can i get more user debug logging related to kerberos for alfresco?

  - by Maarten

  I am running alfresco community edition 3.4c on a debian linux. I have problems getting the kerberos authentication in order. The biggest problem is that do not seem to have any sort of user logs. what i am using already: log4j.logger.org.alfresco.web.app.servlet.KerberosAuthenticationFilter=debug log4j.logger.org.alfresco.repo.webdav.auth.KerberosAuthenticationFilter=debug log4j.logger.org.alfresco.smb.protocol=debug log4j.logger.org.alfresco.fileserver=debug I've also checked if the users actually reach the server, and they do, (also on a linux firefox outside of domain, i seem to be able to log in). Can anyone help me get more user logging?

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• apache server not working after installing zend server

  - by kamal

  i have apache installed in my redhat 5.3 server machine. and i was trying to install zend server. i installed zend server with install.sh file in directory /var/zend. in my windows machine after installling zend server community edition i was able to access apache server as well as zend server. but in my linux machine localhost displays nothing and localhost:10081 shows zend server. what can i do to run my localhost? or should i seperately install apache?

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• Applying the Windows Experience Index to Servers

  - by Scott

  I finally convinced upper management that we need a computer replacement plan, and I've been tasked with making an inventory of what we have and determining what needs to be replaced this year, next year, the year after, etc. I had to use some sort of criteria to back up my recommendations, so I decided to try using the Windows Experience Index. I've determined the CPU and Memory scores for all of our desktops and servers using community data. I also feel fairly successful in assigning a WEI score to each user based on their computing needs. I'm struggling with assigning a WEI score to the various servers that we have: file server, database server, Exchange server, backup server (for doing backups), web server. Suggestions would be appreciated.

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• Windows 2003, MySQL 5.0.24, Windows Updates causes problems with MySQL?

  - by Alessandro

  Hi, our Windows 2003 webserver has 2 GB of ram and MySQL v. 5.0.24-community-nt. Maybe due to Windows Updates (is it possible??) I've problems with MySQL databases. I should restart everyday IIS services. Events: "Changed limits: max_open_files: 2048 max_connections: 800 table_cache: 619" "Do you already have another mysqld server running on port: 3306 ?" "Can't connect to MySQL server on 'localhost'" 10055 Should I increase the innodb_buffer_pool_size, from 250M to 500M? Or/and? Thanks

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• portal/forum for small companies to get technology help

  - by thomas

  I understand this is an open ended question and not quite sure how to add this to community wiki, if that is appropriate. I am doing a little research on where small companies would go on the internet to get answers for technology related questions. Could be around sales, servers, programming, etc. Clearly superuser.com, serverfault.com, and stackoverflow.com are excellent starting points. I am just wondering if anyone has heard of any others. Think a "facebook" that links technology providers with small companies to help answer questions and potentially provide/offer solutions. Thanks!

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• Modify HTML Content with Squid

  - by user38400

  We have setup our network as per the tutorial here: https://help.ubuntu.com/community/Upside-Down-TernetHowTo. Basically, we have a squid proxy that inverts images for pages that clients request. We're trying to modify the script so that we can edit the contents of the webpage before the webpage is sent to the client. We are not having any luck. I'm wondering if there is something different about .html files that makes this not possible. What is happening is that we do a wget on the URI that is requested, save it locally, modify it and then echo back the new URI. The page that the user gets is the unmodified page and not the one that we just changed.

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• What files should be excluded from a complete Windows backup?

  - by tro

  I'm starting to use CrashPlan to backup my Win 7 PC. I've got it writing to my external HD (for quick local restores) and to CrashPlan Central (for offsite storage). I'd like to backup my entire C:\ drive (the only partition) in a way that: Preserves all of my installed software and configuration, but Avoids backing up log files and other ephemeral / temporary files that are regenerated during normal operation of the OS. Which files and/or directories should I be excluding from backups? I'd like to make this a community wiki, so that we could all contribute towards a definitive list. Here's a list of regular expressions identifying the directories and files that CrashPlan excludes on Windows by default listed at http://support.crashplan.com/doku.php/articles/admin_excludes: .*/(?:42|\d{8,})/(?:cp|~).* (?i).*/CrashPlan.*/(?:cache|log|conf|manifest|upgrade)/.* .*\.part .*/iPhoto Library/iPod Photo Cache/.* .*\.cprestoretmp.* *\.rbf :/Config\\.Msi.* .*/Google/Chrome/.*cache.* .*/Mozilla/Firefox/.*cache.* .*\$RECYCLE\.BIN/.* .*/System Volume Information/.* .*/RECYCLER/.* .*/I386.* .*/pagefile.sys .*/MSOCache.* .*UsrClass\.dat\.LOG .*UsrClass\.dat .*/Temporary Internet Files/.* (?i).*/ntuser.dat.* .*/Local Settings/Temp.* .*/AppData/Local/Temp.* .*/AppData/Temp.* .*/Windows/Temp.* (?i).*/Microsoft.*/Windows/.*\.log .*/Microsoft.*/Windows/Cookies.* .*/Microsoft.*/RecoveryStore.* (?i).:/Config\\.Msi.* (?i).*\\.rbf .*/Windows/Installer.* Other excludes: .*\.(class|obj) .*/hiberfil.sys (?i).*\.tmp (?i).*/temp/ (?i).*/tmp/ .*Thumbs\.db .*/Local Settings/History/ .*/NetHood/ .*/PrintHood/ .*/Cookies/ .*/Recent/ .*/SendTo/

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• Using Active Directory Security Groups as Hierarchical Tags

  - by Nathan Hartley

  Because active directory security groups can... hold objects regardless of OU. be used for reporting, documentation, inventory, etc. be referenced by automated processes (Get-QADGroupMember). be used to apply policy be used by WSUS I would like to use security groups as hierarchical tags, representing various attributes of a computer or user. I am thinking of (computer centric) tags something like these: /tag/vendor/vendorName /tag/system/overallSystemName /tag/application/vendorsApplicationName /tag/dependantOn/computerName /tag/department/departmentName /tag/updates/Group1 Before fumbling through implementing this, I thought I would seek comments from the community. Specifically in the areas: Does this make sense? Would it work? Has anyone else attempted this? Is there a good reference on the matter I should read? How best to implement the hierarchy? Tag_OU\Type_OU\GroupName (limits quantity in OU, uniqueness not guaranteed) Tag_OU\Type_OU\Tag-Type-GroupName (limits quantity in OU, uniqueness guaranteed, verbose) etc ... Thanks in advance!

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• Spiceworks versus Request Tracker?

  - by dmackey

  We currently utilize Request Tracker for help desk ticketing, we utilize Spiceworks for asset inventorying. I am pondering whether it might be worthwhile to move from RT to Spiceworks for help desk as well. Has anyone used both systems and can provide some insight into any benefits/problems with either system? Or has general philosophical reasons why one should use one solution over the other? Of course, RT is open source and Spiceworks is not - and usually this would be a major item for me - but since Spiceworks is free and takes community involvement fairly actively its not as major of a concern for me (personally).

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• Remote Desktop Services In A Virtual VMWare Environment

  - by Christopher W. Szabo

  I have a quick question regarding Microsoft Remote Desktop Services in a virtualized environment using VMWare. This environment will actually be hosted in a large data center with in a cloud that is offered. This particular data center has the ability to establish high speed point to point connections with customers via metro-ethernet who are hosted in the cloud. The result is that customers can actually host their corporate domain in the data center's cloud. Put the merits of such a configuration aside for the time being. Believe me when I say that the cloud is stable and had enough hardware behind it to rival a dedicated cabinet. My question has to do with RDS in a virtual environment, which would amount to virtual desktops hosted on a virtual server. I've read that this works without issue using Hyper-V and VMWare. But before I take the plunge I wanted to get some feedback from the community.

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• How do I secure Sql Server 2008 R2

  - by Mark Tait

  I have both a dedicated and a VPS (from Fasthosts) virtual server - the web sites/applications I run on these, access Sql Server stored on the same web server. Until now, I have logged onto Sql Server on both the deidicated and VPS server, from Sql Server Management Studio - until I noticed in my server application logs, multiple attempts to logon to Sql Server using the 'sa' username, but failed password. So someone/bot is trying hard (repeatedly every couple of hours, for approx 20 attempts during each instance) to log on... so obviously I have to lock down access to Sql Sever remotely. What I have done is gone into Configuration Manager, and in Sql Server Network Configuration - Protocols for Sql2008 and also in Sql Native Client 10.0 Configuration - Client Protocols - I have diabled Named Pipes, TCP/IP (and VIA by default). I have left Shared Memory enabled. I also disabled in Sql Server Services, the Sql Server Browser. Now the only way I can manage the databases on these servers, is by logging on to them via Remote Desktop. Can anyone confirm if this is the correct way of stopping anyone maliciously logging on to Sql Server? (I'm not a DBA or security expert - and there are hundreds of articles advising all different ways - but I was hoping for the experts here to confirm, or otherwise, if what I've done is correct) Thank you, Mark

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• NIS server setting problem in ubuntu

  - by Asma

  Hi, I set NFS for server-client that works properly. Now I am trying to set NIS server-client on same PC's. I am following the instruction from "SettingUpNISHowTo" from https://help.ubuntu.com/community/SettingUpNISHowTo link. But in step-10, "sudo /etc/init.d/nis restart".......it show error fail. If I try to use "ypcat passwd" to check......it shows error YPBINDPROC_DOMAIN: Domain not bound No such map passwd.byname. Reason: Can't bind to server which serves this domain Can anyone able to help me to get rid out from this problem? Is all the step in the document is proper to configure the NIS server? Thanks in advance.

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• How should I perform database maintenance on a 24x7 system

  - by solublefish

  I'm a software developer who inherited a part-time DBA role. I'm responsible for an application backed by a small, high-volume 24x7 database on SQL Server 2008. While there's other stuff in the DB, the critical piece is a 50GB, 7.5M row table that serves 100K requests/sec during peak load, and about half that at "night". This is 99%+ read traffic, but the writes are constant, and required. I need to be able to perform periodic maintenance without a maintenance window. Say an index rebuild, a job to purge old data, Windows Update, or hardware upgrade. Most of the advice I've seen is along the lines of "MAKE a maintenance window." While I appreciate the sentiment, I hope there's another way. If it will solve this problem, I do have the ability to purchase new hardware or modify the database, the clients (a set of web services servers), and much of the application code (ADO.NET + ASP.NET). I've been thinking along the lines of using the warm spare (or a 3rd server) to do the maintenance, and then "swap" it into production. 1 Synchronize the spare by restoring backups, including a current transaction log. 2 Perform the maintenance tasks. 3 Reconfigure clients to connect to the spare server. Existing connections are finished within a minute or so. 4 The spare server is now the production server. The problem remaining is that the new production server is now out of date by however long it took to perform maintenance. Is there some way that the original production server can be made to queue up changes and merge them to the spare between steps 2 and 3? Any other ideas?

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• How do I stop CRM from asking for admin credentials when printing report

  - by Ac0ua

  Problem: When printing a report in CRM, I am asked by the UAC for admin credentials. There is a long URL: https://(crm_hostname)/reserved.ReportViewerWebcontrol.axd?ReportSession=(ID)ControlID=(ID)Culture=1333&UICulture=1033&ReportStack=1&OpType=PrintCab Info: There are three users that have the issue laied out here. They are not admins of any kind. It looks like it is asking for permission to allow SQL Server Reporting Services 2008 to run. When I put my credentials in, it just brings up the Print dialog box (this is fine, just stop asking for credentials). I know this might sound silly but I downloaded and installed "SQL Server Reporting Services 2008" hopping my credentials would give permission right from the beginning. Giving the users local admin, I was told is not an option. Note: I did post this on community (dot) dynamics (dot) com but, they are not a very active website. Thanks for any help even if it just points me in the right direction!

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• Thoughts on Apache log file sizes?

  - by Nathan Long

  Do you place any limits on the size of Apache log files - access.log and error.log? Specifically, can you give: Reasons to limit log file sizes Disk space Any other? Reasons NOT to limit log file sizes Research into performance issues or security breaches Any other? Methods of doing so Cron job that periodically deletes the file, or the first N lines? Any other? Anything you might salvage before deleting For example, grep out how many times a file was downloaded before deleting the access logs I'd like get the thoughts of experienced sysadmins before I do anything. (Marking as community wiki since this may be a matter of opinion.)

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