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• Dedicated server configuration - some tips -Xenserver/Debian

  - by Sanjay S

  I am migrating from a vps based hosting to a dedicated hosting (8GB RAM/1TB HD). I need to run multiple Drupal and Ruby based applications? what would be the recommended configuration. I was thinking of two options. 1) Install multiple Debian os on top of Xen (like VPS). Each may be 2GB Memory and run Drupal and Ruby and MYSQL on separate partitions . 2) Install one instance of Debian. and Install Drupal (Apache, php) Ruby (lighttpd, ruby) ,MySQL all in the same partition I was little worried that option 2 could lead to some performance issues later..

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• Syslog - capturing event logs from Win2k boxes

  - by molecule

  Hi all, I asked this question in SuperUser without much luck and so I am posting it here to see if anyone can assist. We have a central syslog server and we want it to capture event log events from Windows hosts. We are specifically interested in logging service start/stop events. We installed "Eventlog to Syslog" on these windows hosts and all works well with XP hosts (Events come from Service Control Manager). However, we are having issues with Win2k hosts. For some reason, service start/stop events do not get logged in the Event Log for Win2k hosts. I got another friend from another company to test on a Win2k host and he does get start/stop events on them. I have searched around for local audit policies i need to enable but with not much luck. Anyone have any ideas? Thanks in advance.

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• What is the difference in RAM speeds?

  - by jasondavis

  I am building a new PC with the intel i7-930 processor. I am wanting to use 12gb of RAM for it (6x2gb sticks). Here is some of the RAM I am looking at G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop 2 of these 3 stick kits. They are rated at 1600 however some of the user reviews on that product say they xcould not get it to run at 1600 and the supplier who makes the RAM made a comment that "I7 doesn't support over DDR3 1066" So I am curious, I do not know much about this, I know the more GB of RAM the better but as for the speeds, I am not sure how much of a difference it makes. So can someone explain to me what the difference in performance may be based on speeds of 1200 vs 1600 ram?

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• Windows 7: blue faces in VLC... sometimes

  - by Mala

  Hi There are a bunch of forum posts about this issue from the last several years but no resolution that I could find. I have the newest VLC installed on Windows 7 with the newest nvidia drivers. Suddenly, VLC plays some videos in such a way as faces are blue. When viewed in another media player, or when looking at the thumbnails, this is not an issue. Other videos are not affected. I've tried resetting VLC options, deleting the VLC folder in the AppData area, etc. I have no other color issues. Does anyone have a fix?

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• error exporting data using mysql workbench

  - by Rajneesh Rana

  hi, i have been getting warning of version mismatch when i was trying to export data dump using mysql workbench. So, i copied mysqldump from mysql server folder and placed it in workbench folder. Now when i am trying to export data i am getting error Operation failed with exitcode -1073741819 here is a entry of log 16:31:25 Dumping wordpress (wp_posts) Running: "mysqldump.exe" --defaults-extra-file="c:\docume~1\rajneesh.r\locals~1\temp\1\tmpxau7tz" --no-create-info=FALSE --order-by-primary=FALSE --force=FALSE --no-data=FALSE --tz-utc=TRUE --flush-privileges=FALSE --compress=FALSE --replace=FALSE --host=localhost --insert-ignore=FALSE --extended-insert=TRUE --user=root --quote-names=TRUE --hex-blob=FALSE --complete-insert=FALSE --add-locks=TRUE --port=3306 --disable-keys=TRUE --delayed-insert=FALSE --create-options=TRUE --delete-master-logs=FALSE --comments=TRUE --default-character-set=utf8 --max_allowed_packet=1G --flush-logs=FALSE --dump-date=TRUE --lock-tables=TRUE --allow-keywords=FALSE --events=FALSE "wordpress" "wp_posts" Operation failed with exitcode -1073741819 Please help me with these issues Thank You

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• On Server Disk Storage VS SAN Storage

  - by Justin

  Hello, I am looking at buying three servers, and trying to figure out which storage solution makes the most sense in terms of performance and cost. Total budget is around: $10,000. OPTION 1: Dell servers with RAID 10 (4 Drives) each 7200RPM SAS 500GB, for a total capacity of 1TB. Each server is approx: $3000. Total storage then across all three servers is 3TB. OPTION 2: Same Dell servers with a cheap single drive no RAID for $2000 and go with a centralized SAN solution. The biggest problem is that I haven't been able to even find a SAN solution that is a reasonable price. Dell entry level storage servers are like $15,000. I am thinking just iSCSI, not fiber (too expensive). What do you guys recommend?

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• Security Resources

  - by dr.pooter

  What types of sites do you visit, on a regular basis, to stay current on information security issues? Some examples from my list include: http://isc.sans.org/ http://www.kaspersky.com/viruswatch3 http://www.schneier.com/blog/ http://blog.fireeye.com/research/ As well as following the security heavyweights on twitter. I'm curious to hear what resources you recommend for daily monitoring. Anything specific to particular operating systems or other software. Are mailing lists still considered valuable. My goal would be to trim the cruft of all the things I'm currently subscribed to and focus on the essentials.

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• Is RAID 0 or JBOD better for home media server?

  - by Donald Hughes

  I have an external two-bay drive enclosure (the OWC Mercury Elite-AL Pro) connected to a Mac Mini (my home media server) over FireWire 800. I'm streaming media to other computers in the house over wired gigabit. I have two 1.5 TB drives that I'm using independently right now. The media is on one, and I'm mirroring the files to the other drive at night as a backup. But as I approach filling up the drive I'm wanting to span those two drives together to give me a total of about 3 TB, and then buy another drive for backups. The external enclosure supports both RAID 0 and JBOD, but I'm not clear on which would be better in this situation. Would RAID 0 provide any performance improvements over JBOD for streaming video (possibly several streams at once? How does each affect the MTBF of the drives? In general, should I choose RAID 0, JBOD, or keep them independent?

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• iMac OSX Lion upgrade - Photo Booth stopped working

  - by Tawani

  After I upgraded my [2009] iMac to OSX Lion (a few days ago), the Photo Booth program stopped working. When I click on the icon, all I get is the following error message: Photo Booth cannot be opened because of a problem With the following stack trace: Process: Photo Booth [1367] Path: /Users/USER/Desktop/*/Photo Booth.app/Contents/MacOS/Photo Booth Identifier: com.apple.PhotoBooth Version: 3.0.1 (117) Build Info: PhotoBooth-1170000~3 Code Type: X86-64 (Native) Parent Process: launchd [149] Date/Time: 2011-07-27 20:48:00.458 -0400 OS Version: Mac OS X 10.7 (11A511) Report Version: 9 Sleep/Wake UUID: BA40DCC4-26BB-480D-9590-709AA598D4CF Interval Since Last Report: 187610 sec Crashes Since Last Report: 10 Per-App Crashes Since Last Report: 7 Anonymous UUID: 9994E544-979E-4577-9413-0D163B53E3B9 Crashed Thread: 0 Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Application Specific Information: dyld: launch, loading dependent libraries Dyld Error Message: Symbol not found: _kFigTimeInvalid Referenced from: /Users/USER/Desktop/*/Photo Booth.app/Contents/MacOS/Photo Booth Expected in: /System/Library/Frameworks/CoreMedia.framework/Versions/A/CoreMedia in /Users/USER/Desktop/*/Photo Booth.app/Contents/MacOS/Photo Booth PS: I also installed OSX Lion on my MacBook Air and had no issues.

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• Ubuntu 12.04 transmission-daemon and zfsonlinux: bad file descriptor and corrupt pieces

  - by Ivailo Karamanolev

  I'm running a Ubuntu 12.04 with zfsonlinux and transmission-daemon. The issues: sporadic Bad File Descriptor and Piece #xxx is corrupt errors. After I recheck the torrent, everything seems fine. That happens only when downloading: once it's in seeding mode. This only happens after the torrent client has been running for some time. I installed zfsonlinux from the offical stable ppa (https://launchpad.net/~zfs-native/+archive/stable). I previously tried running transmission-daemon from the Ubuntu repository, but since I've switched to building the latest transmission from source with the latest libevent (all stable) - same thing. I've seen bug reports (https://trac.transmissionbt.com/ticket/4147) for that issue, but none of them seem to have a solution. How can I fix these errors, or at least understand where they come from and what I can do to rectify the issue?

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• Connecting to VPN via Proxy

  - by Rodrigo

  Hi, My company's VPN server is located in Netherlands, from my current location this is a really crappy place in terms of connectivity, connection keeps dropping, it's slow and keeps being reset during high traffic times. I have a dedicated server over USA which is able to connect to VPN server without this issues, connection is stable and fast. My question is, how do I connect to this VPN using a proxy running on my dedicated server? I'm on Windows 7 using a VM on XP to connect to the VPN. Thanks.

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• AT&T U-verse 2Wire Router - Increase session table limit?

  - by caleban

  AT&T U-verse VDSL "fiber to the node" 24Mbit down / 3Mbit up 2Wire Router Model 3800HGV-B Software Version 6.1.9.24-enh.tm The 2Wire router appears to have a limit of 1024 TCP and UDP sessions. This limit appears to apply to all sessions regardless of any static IP, firewall off, DMZ plus, secondary router configurations. I've tried using the 2Wire router alone and also configuring the 2Wire static IP addressing, firewall off, DMZ plus, etc. setup along with my own pfSense router/firewall. Either way it appears I exceed the 1024 session limit and sessions start being reset. Running out of sessions isn't being caused by torrents or p2p etc. We're a business and our legitimate uses are exceeding this session limit. AT&T tells me it's not possible to bridge the router or increase or avoid the session table limit. I'm curious if anyone has found a way around either of these issues.

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• Linux SW Raid: whole disk or per-partition?

  - by Steve Pomeroy

  I have inherited a machine which has 2 physical disks and uses Linux SW RAID(1). Both disks are partitioned and are are all individual arrays (/dev/md0, /dev/md6, etc.). Those arrays are then mounted (/boot, /home, etc. even /tmp). As RAID is designed to mitigate physical failures, is there any reason why one would use this technique over whole-disk arrays that are then partitioned (perhaps using LVM)? This seems prone to more potential issues, but may have some special properties that I haven't been able to glean. I'm planning on moving this setup to: disks?SWRAID(1)?LVM as I'll be making multiple VMs out of the one machine, but wanted to make sure I knew what I was doing when I got rid of the old setup.

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• SQL Server 2008 Install fails error reading etwcls.mof

  - by YonahW

  I receive the following error when trying to install Sql Server 2008 Standard on a Windows Server 2008 box. Error reading from file D:\x64\setup\sql_engine_core_inst_msi\PFiles\SqlServr\MSSQL.X\MSSQL\Binn\etwcls.mof. Verify that the file exists and that you can access it. When searching the interwebs I only find information about compiling this file but not reading. The file exists in the location requested. I have run the WMIDiag tool and there doesn't seem to be any issues. I am not sure what else I can do to solve this issue and can't seem to find anything on the internet about it. Cross posted at: http://social.msdn.microsoft.com/Forums/en-US/sqlsetupandupgrade/thread/ae47c277-e822-49c1-89b8-701e23702633

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• Best practice for authenticating DMZ against AD in LAN

  - by Sergei

  We have few customer facing servers in DMZ that also have user accounts , all accounts are in shadow password file. I am trying to consolidate user logons and thinking about letting LAN users to authenticate against Active Directory.Services needing authentication are Apache, Proftpd and ssh. After consulting security team I have setup authentication DMZ that has LDAPS proxy that in turn contacts another LDAPS proxy (proxy2) in LAN and this one passes authentication info via LDAP (as LDAP bind) to AD controller.Second LDAP proxy only needed because AD server refuses speak TLS with our secure LDAP implemetation. This works for Apache using appropriate module.At a later stage I may try to move customer accounts from servers to LDAP proxy so they are not scattered around servers. For SSH I joined proxy2 to Windows domain so users can logon using their windows credentials.Then I created ssh keys and copied them to DMZ servers using ssh-copy, to enable passwordless logon once users are authenticated. Is this a good way to implement this kind of SSO?Did I miss any security issues here or maybe there is a better way ofachieving my goal?

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• CPU's on Hyper-V host system is just idling, even though VM's are at full throttle

  - by Bjørn

  Hello, I have a server that is running Windows 2008 64 bit Hyper-V, with 8 gigs of RAM and Intel Xeon X3440 @ 2.53 Ghz, which gives me 8 logical cores in the performance monitor on the host system. I have set up three Virtual Machines, all running Windows 2008 32 bit. Build server, running Team City Staging server SQL Server, running SQL Server 2005 These three machines are running very sluggishly, they are at 100% cpu even though the host system is barely using any cpu at all, typically below 10% total. Could anyone please give some tips as to the best setup for CPU allocating? Should I have set each server to have two cores, or should I increase this number above the total number of cores on the host? What is a good number to set on the Virtual Machine Reserve and Virtual Machine Limit? Is 8 gigs of physical RAM insufficient for 3 VM's? Thanks for reading. :)

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• Increasing System Menu Font Size for OS X Lion

  - by JW01

  My father-in-law recently picked up an iMac (with OS X 10.7 - Lion) and loves it. However, his eyesight isn't that great and would like to find a way to increase the font size of the system menu bar like he could on his old Windows system. I've been unable to find anything in the system configuration that might work. I've heard that the TinkerTool might be able to do it, but I'm a little hesitant to monkey around with his system - I don't want to introduce system stability issues. Question: Has anyone been able to find any good way to increase the system menu font size?

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• Problems with login scripts on Terminal Server 2008

  - by discovery

  We are having issues with login scripts not running on Windows 2008 Terminal Server. This is a brand new implementation and they have never worked. The test user in question doesn't have any problems running login scripts on their workstation. I have tried logging into the server directly with their account, but still no scripts run. I have setup a test account with Domain Admins rights in the same OU as theirs and the scripts don't run. I can manually run the scripts from the SYSVOL\somedomain.com\Policies folder and they run fine. The Terminal 2008 Server is in a mixed 2003/2008 domain. The user can run the gpupdate on the server without error. I have also run the Group Policy Results for this user and the terminal server and everything looks good, no errors. Any suggestions?

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• Oracle Installation issue on Oracle Linux 6.4

  - by Pradhyoth

  I am trying to install Oracle 11g(11.2.0.1.0) on Oracle Linux 6.4(Remote Server). I get the following error(s) when Database Configuration Assistant is running ORA-01092: ORACLE instance terminated Disconnection forced ORA-48210: Relation Not Found Can someone help me regarding this errors, I cant seem to find what exactly that I have to do to solve this issue. I have done the same install on Oracle Linux 5.7 but never faced this issue before. The only problem while installing(which happens on 5.7 too) is that the required packages fail, but upon checking, it seems much higher versions are already installed. Also I cant do a yum update because the system seems to have connectivity issues with public-yum.oracle.com as I cant ping it(even though the IP Address gets resolved)

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• Reverse DNS does not match SMTP banner vs Reverse DNS mismatch

  - by MadBoy

  I have to make decision whether my Reverse DNS should match SMTP banner but Reverse DNS to DNS and vice versa stays different or vice versa. Which one to choose? I have an 2x Exchange 2010 server with one SMTP Sender with TMG 2010. TMG has 2 links connected so that we have 2 separate internet providers. The problem is I have no way to control TMG behavior on which link is used to send emails as it picks it randomly. I have 2 MX records: - mail.test.com which resolves to IP and IP resolves to mail.test.com - mail2.test.com which resolves to IP2 and IP2 resolves to mail.test.com This was done to prevent smtp banner issues but it provides problems with Reverse DNS if the server on the other side is eager enough to do comparison. But I've checked with Google and they also don't have that in perfect condition.

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• PostgreSQL server: 10k RPM SAS or Intel 520 Series SSD drives?

  - by Vlad

  We will be expanding the storage for a PostgreSQL server and one of the things we are considering is using SSDs (Intel 520 Series) instead of rotating discs (10k RPM). Price per GB is comparable and we expect improved performance, however we are concerned about longevity since our database usage pattern is quite write-heavy. We are also concerned about data corruption in case of power failure (due to SSDs write cache not flushing properly). We currently use RAID10 with 4 active HDDs (10k 146GB) and 1 spare configured in the controller. It's a HP DL380 G6 server with P410 Smart Array Controller and BBWC. What makes more sense: upgrading the drives to 300GB 10k RPM or using Intel 520 Series SSDs (240GB)?

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• Creating/Editing Existing Documents

  - by Caroline Jones

  A document was shared with me, enabling me to edit it. However, whenever I open it, it only lets me view it, and anytime I try to open the "Open with Google Docs" tab, it acts as if I never pressed it, same as if I try to download it. Same with whenever I try to create a new document. I'll click "Create" and then "Document" and it won't be registered. I really need these issues fixed pronto, as I have to use this software every day. Please help!!

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• Small web server hardware advice

  - by Dmitri

  We need to build a new web server for our organization. We have around 100 hundred small traffic web sites, so our hardware requirements are not too tough. We run CentOS 6, Varnish+Apache, PHP, MySQL, Typo3 CMS for most of websites. Here's a hardware we want to buy: SuperMicro X9SCA-F-O (we need to have a remote management capability) (or better X9SCM-F?) Intel Xeon E3-1220 v2 2*4Gb DDR-III 1600MHz Kingston ECC (KVR16E11/4) (currently we have 4gb, and it feels like enough, so no reason for 16gb yet). Procase EB140-B-0 (1 unit) PSU 350W Procase MG1350, Active PFC We already have: Intel 335 120GB SSD (for OS, databases and important websites). 2*2tb WD Green RAID1 (for other data and backups). Does it look like a reasonable choice for our needs? Any issues with hardware compatibility? Any other notes?

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• NX Client running on OS X 10.6.3 => NX Server Ubuntu 10.04: weird keymapping issue

  - by Mike D

  I have been using Ubuntu 9.10 at work after switching from vista. After being (expectedly) disappointed with performance over VNC (via VPN) when logging in from home, I came across the NOMACHINE suite. Last week, I upgraded from OS X 10.6.2 = 10.6.3 at home. After that, I also updated my NX Client at home to the latest version, as there were issues with recent changes in the OSX X11 setup that rendered the NX connection useless. At that point, everything worked fine. Fast forward, I upgraded from 9.10 = 10.04 on my work machine the next day, and after coming home and trying to log-in remotely, I noticed that the "s" and "m" keys, when pressed locally, acted as if the meta key was being pressed on the remote machine. That is, the "s" key opens in the Ubuntu login menu (the power icon), and the "m" key opens the messaging menu. I found some info on using xmodmap to remap keys, however, I can't even begin to fathom what keys I could remap to solve this issue. Any ideas?

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• IIS - Forwarding requests to a folder to another port

  - by user1231958

  Context I currently installed Glassfish 3 in a server that currently holds ASP and PHP inside Internet Information Server 7 so we can start moving to a new system architecture (the information system is being remade). Obviously, Glassfish uses another port and without too much configuration (all I had to do is to install it) it worked. If I write www.domain.com:8080, the person will be redirected to the Glassfish server. Issue Obviously I don't want the person to write the port! I also believe it might also hold some security issues. Requirement I need the server to take an address of the form www.domain.com/gf or new.domain.com or something alike, and when it receives such a request, "redirect" (masking the URL) the user to the Glassfish website (www.domain.com:8080). Thank you beforehand!

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