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  • Can I have 2Gbit over 1Gbit Nics

    - by Daniel
    So this really baffles me. Apparently because 1Gbit can transmit data in both directions simultaneously it should be possible to get 2Gbit of data transfer on a single NIC (1Gbit flow seend and 1Gbit receive). People claim that because 1Gbit is full-duplex (almost always) it is exactly 2Gbit in total. My intuition and electrical background tells me that something is not right here 4 twisted pairs 250Mbit capacity each gives 1Gbit. Unless it is really possible to transfer data in both directions simultaneously. I did a test with iperf. Ubuntu server 12.04 <-- MacBook Pro. Both with decent CPU speed. Tested speed of connection individually and on Mac I can see 112MB/s regardless which direction data is going. On Ubuntu with vnstat and ifstat I got 970Mbit speeds. Now, launching iperf in server mode on both machines at the same time and sending data using 2 iperf clients shows that I'm for example on Ubuntu box sending at 600Mbit, and receiving 350Mbit. which adds up to pretty much 1Gbit link. So to me there is no magical 2Gbit. Can someone confirm that or tell why I'm wrong? Another thing that confuses me i the fact that e.g. 24-port switch has for example: Throughput»up»to:»50.6Mpps Switching»capacity:»68Gbps Switch»fabric»speed:»88Gbps Which would suggest thay can handle 2GBit per port.

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  • Apache / PHP Begins to Deny SQL Requests after about 2000

    - by Daniel Stern
    We have a web page on our server that we use to run administrative scripts. For example, we might run the script "unenrolStudents()" which runs 5,000 SQL SET commands one after another and sets 5000 student entries in an SQL database to unenrolled. However, we are finding that after running a few thousand queries (it is not totally consistent) we will be "locked out" by our server. SYMPTOMS OF LOCKING OUT: - unable to connect to server with winSCP - opening putty with that connection shows a blank screen (no login / pass) - clearing cookies / cache in chrome does NOT fix locking out - other computers in the office ALSO become locked out - locking out can be triggered with a high frequency of requests (10000 in 1 second) or by less over time (10000 in 500 seconds - this will still cause a lockout even though the frequency is much less) We believe this is a security feature of our own Apache. I know we are using Suhosin but I didn't configure it so I don't know. How can I disable this locking effect so that I can confidently run all my SQL requests and they will go through? Has anyone else dealt with this and found workarounds? Thanks DS

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  • Looking for Linux text editor

    - by Daniel
    I'm looking for VIM replacement. My key points are: Extensible in sane language (such as Python, Ruby, or even Lua, after vimscript everything will do). Also GUI part should be extensible too, so no SublimeText2. GUI. Preferrably GTK+. Lightweight. I don't understand IDEs like Eclipse/NetBeans consuming up to 1G of RAM. File browser panel. Splits, tabs and windows. There should be ability to split views tabs infinite number of times (or while they fit to screen). VCS support (optional: especially Git) Snippets & autocompletion (not mandatory, but I would very love to have those) Any ideas?

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  • Apache2/mod_fcgid/PHP Process Limits Not Respected

    - by Daniel
    I've recently moved to Apache2 / mod_fcgid / PHP from nginx / php_fpm. This is the second server on which I've made this migration, but it's used much less frequently than the first, which is working like a charm. The problem is in the PHP processes that it's spawning. In looking at the mod_fcgid documentation, it appears that the default for killing idle processes is 300 seconds; I've changed that to 20. At this point, I'd be fine if 300 would work - but it's not happening. It's been running for nearly a day now, and server-status shows 12 active processes: Process name: php5 Pid Active Idle Accesses State 19243 84879 14420 11 Ready Process name: php5 Pid Active Idle Accesses State 20954 82143 149 22 Ready 20947 82149 149 22 Ready 20953 82143 149 13 Ready Process name: php5 Pid Active Idle Accesses State 20589 82765 23644 72 Ready Process name: php5 Pid Active Idle Accesses State 17663 86103 2034 117 Ready Process name: php5 Pid Active Idle Accesses State 19862 83961 1976 91 Ready Process name: php5 Pid Active Idle Accesses State 18495 85825 5164 18 Ready Process name: php5 Pid Active Idle Accesses State 25463 75109 23948 24 Ready Process name: php5 Pid Active Idle Accesses State 2466 60019 60016 2 Ready Process name: php5 Pid Active Idle Accesses State 20729 82541 12592 23 Ready Process name: php5 Pid Active Idle Accesses State 22135 80616 46361 6 Ready PHP applications are not being served at this point - Apache is returning a 503. However, it is still serving the server-status module, and mod_mono/Mono 2.10 applications are still being served. The problem is with the PHP. /etc/apache2/mods-available/fcgid.conf... <IfModule mod_fcgid.c> AddHandler fcgid-script .fcgi FcgidConnectTimeout 10 FcgidMaxRequestsPerProcess 500 FcgidIdleTimeout 20 FcgidFixPathinfo 1 FcgidMaxProcesses 10 </IfModule> (heh - Max Processes isn't being respected either...) Of course, fcgid.conf is smylinked in mods-enabled.

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  • Is it bad to have the Reverse DNS for two IPs point to the same domain name?

    - by Daniel Vandersluis
    I am in the process of setting up a new server for my domain (the site will be moved, it is not for load balancing or the like), which has a different IP address from my existing server. My current server has a reverse DNS PTR record set up pointing its IP to mydomain.com. Is it bad to set up a reverse DNS PTR record for the new IP pointing to mydomain.com as well? Or should I wait until I do my migration to set up the record?

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  • Populating Specific Cells Using VBA

    - by Daniel
    I am using VBA to pull from a SQL table and it automatically populates cell E14. Not sure why it's that cell, but is there a way to specify which cell it pulls the data into? Here's what I have right now: strSQL = "SELECT distinct Source FROM dbo.Simulations WHERE SimulationID = 5

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  • rsync creating thousands of ..ds_store files from mounted volume

    - by daniel Crabbe
    I've been using rsync on OS X to sync all our website admins. It was working fine until the OS X 10.6.3 update! Now it creates thousands of empty (0-kb) folders. It only does it when synching to a mounted network drive (which we need to do) as when I sync to my local drive it works as usual! I've tried excludes which don't seem to be working... also tried a different version of rsync so it's an OS X issue. echo "" echo "~*~*~*~*~*~*~*~*~*~*~*~*~*" echo " SYNCING up KINEMASTIK" echo "~*~*~*~*~*~*~*~*~*~*~*~*~*" /usr/local/bin/rsync -aNHAXv --progress --exclude-from 'exclude.txt' /Volumes/Groups/Projects/483_Modern_Activity_Website/web/youradmin/ /Users/dan/Dropbox/documents/WORK/kinemastik/WEBSITE/youradmin/ echo "" echo "~*~*~*~*~*~*~*~*~*~*~*~*~*" echo " SYNCING up CHRIS BROOKS YOURADMIN" echo "~*~*~*~*~*~*~*~*~*~*~*~*~*" /usr/local/bin/rsync -aNHAXv --progress --exclude-from 'exclude.txt' /Volumes/Groups/Projects/483_Modern_Activity_Website/web/youradmin/ /Volumes/Groups/Projects/516_ChrisBrooks/website/youradmin/ Has anyone experienced the same problem?

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  • Puppet gives SSL error because master is not running?

    - by Daniel Huger
    I started with two clean machines this time. My master is running 12.04 Version: 2.7.11-1ubuntu2 Depends: ruby1.8, puppetmaster-common (= 2.7.11-1ubuntu2) My client is 10.04 Version: 2.6.3-0ubuntu1~lucid1 Depends: puppet-common (= 2.6.3-0ubuntu1~lucid1), ruby1.8 To setup Puppet tutorial: http://shapeshed.com/setting-up-puppet-on-ubuntu-10-04/ To connect master and client: http://shapeshed.com/connecting-clients-to-a-puppet-master/ The first time I tried to connect master to client failed with SSL_connect error. So I did rm -rf /etc/puppet/ssl/ to remove all the keys inside ssl folders. It looked like it work.... BUT client# puppet agent --server puppet --waitforce 60 --test /usr/lib/ruby/1.8/facter/util/resolution.rb:46: warning: Insecure world writable dir /etc/condor in PATH, mode 040777 /usr/lib/ruby/1.8/puppet/defaults.rb:67: warning: Insecure world writable dir /etc/condor in PATH, mode 040777 info: Creating a new SSL key for giab10 warning: peer certificate won't be verified in this SSL session info: Caching certificate for ca warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session info: Creating a new SSL certificate request for mybox123 info: Certificate Request fingerprint (md5): XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session info: Caching certificate for mybox123 err: Could not retrieve catalog from remote server: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed warning: Not using cache on failed catalog It cached but then it couldn't retrieve it. Let me stop here.... worrying I would mess something up. But let's check master's status. * master is not running WoW.... ??? master# service puppetmaster start * Starting puppet master [OK] master# service puppetmaster status * master is not running I think time is sync. Well, we are behind a firewall so the port to sync time is disbaled. I checked with date and they seem okay. What about master not running? Is that the cause? Any help is appreciated. Thanks! /var/lib/puppet/log/masterhttp.log [2012-06-30 00:13:25] INFO WEBrick 1.3.1 [2012-06-30 00:13:25] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:13:25] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 00:19:40] INFO WEBrick 1.3.1 [2012-06-30 00:19:40] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:19:40] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 00:28:58] INFO WEBrick 1.3.1 [2012-06-30 00:28:58] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:28:58] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 15:31:25] INFO WEBrick 1.3.1 [2012-06-30 15:31:25] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 15:31:25] WARN TCPServer Error: Address already in use - bind(2) 1 S puppet 5186 1 0 80 0 - 29410 poll_s 15:44 ? 00:00:00 /usr/bin/ruby1.8 /usr/bin/puppet master --masterport=8140 4 S root 5235 5005 0 80 0 - 2344 pipe_w 15:45 pts/0 00:00:00 grep --color=auto puppet kill -9 5186 puppet master service puppetmaster status * master is not running I always have this error, but I always ignored it. http://pastebin.com/exbpArjv What could it mean? Time sync? Package not installed? Then how could we do puppetca in the first place?

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  • esxi change MKS port

    - by Daniel Powell
    I need to connect to my home esxi box over the web however I cannot use the default port 902 for the console viewer due to firewall restrictions. Is there a way to change this port somewhere even if i can just do some nat and redirect any other port to that port? I've had a look around and when I try to connect to the esxi server in vSphere client I cant find anywhere I can specify the port. I know this is not the recommended way to do this but its a testing server and security is not an absolute must on this box. I also cannot setup a vpn to this box.

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  • Window Servers 2003 Security After Support Lifecycle

    - by Daniel Fukuda
    Hello, I wanted to ask if let's say that Microsoft has stopped supporting Windows Server 2003 now so there is no any security updates and I use that system for Domain Controller (Windows XP/7 Professional Clients) and File Server only + I'm using ESET NOD23 AntiVirus. Will my system be secure? I'm asking because I don't surf internet on that system nor I will install/open any programs/documents and that server is connected to router without any open ports. "On July 14, 2015, all Windows 2003 support, including security updates and security-related hotfixes, will be terminated."

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  • Migrating SBS 2003 to 2011, and hangs when migrating Public Folders

    - by Daniel P
    I've been following the migration guide at http://www.it-book.co.uk/1651/migration-from-sbs-2003-to-sbs-2011-3. The option "Migrate Exchange mailbox and settings" links me to http://technet.microsoft.com/en-us/library/gg563803.aspx When I get to the stage of right-clicking "Move All Replicas", it instantly hangs. I can't see anything specifically in the event viewer at the time this happens. Is this a case of waiting, or is there something more going on here?

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  • b Is it bad to have the Reverse DNS for two IPs point to the same domain name?

    - by Daniel Vandersluis
    I am in the process of setting up a new server for my web application (the site will be moved, it is not for load balancing or the like), which has a different IP address from my existing server. My current server has a reverse DNS PTR record set up pointing its IP to mydomain.com. Is it bad to set up a reverse DNS PTR record for the new IP pointing to mydomain.com as well? Or should I wait until I do my migration to set up the record? Update: I forgot to mention, the A record for the mydomain.com points to the old server's IP address, not the new one, if it matters.

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  • HP DX5150, MS-7050 v. 1.3 Motherboard front panel pin connectors

    - by Daniel
    I recently purchased and installed a MS-7050 v. 1.3 motherboard into a regular non-HP case and thus the front panel connectors are different than the original OEM connectors which are all bundled together. The HP support website does not have this information available and someone from HP indicated in response to a support forum question that this information is not available. What is the motherboard pin schematic for the front panel i/o connectors (power, reset, hdd led, and power led)?

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  • Using a flash drive to speed up conventional disks (on linux)

    - by Daniel
    Hi! Is there a possibility to use a flash drive as a speed up for conventional hard disks? I got the idea to redirect all read ops to the flash drive if the data is already stored there, and to read from the conventional disks if the data is not found there (and during idle time the freshly accessed data from the conventional disk is stored on the flash disk). Is this already possible with linux standard tools?

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  • filesystem compatible with freenas and windows

    - by Daniel
    Hi all, I'm planning on using FreeNAS (was considering openfiler but freenas seems simpler) for my home NAS box running off ESXI. I have managed to get local sata drives to mount in ESXI (http://serverfault.com/questions/216902/esxi-add-datastore-without-partitioning). I've had one of the drives fail on my before and I was able to retrieve most of the data off it using windows tools (I'm not much of a linux guy I know enough to be dangerous!). If I go the freenas route in the event that something goes bad what would be the best file system to use so that I could pop the drive out of the freenas box (vm) and put it in another pc running windows so I could try and run various recovery tools to get the data back. All in all its not a major problem if I lose the data just would be a bit annoying, so I'm not looking for suggestions around backing up etc. I was considering using NTFS that the drives are already formatted as but it appears that while freenas does support NTFS that its a bit buggy and not 100% reliable, anyone know if this is still true? Read that on a forum somewhere.

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  • Remembering window's location and desktops on Mac OS X

    - by Daniel Cukier
    When I use my Mac, I like have a standard windows organization to do my Work: I put 4 consoles opened side by side on console 1 I put Safari in other Mail and iCal in another TextMate on other etc And depending on the work I do, I'd like to have different window configuration. And when I have a external monitor connected, I need another configuration. Is there any tool to make this? What is the best way to do it?

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  • Hardware upgrade: Windows 7 bluescreens, Vista loads

    - by Daniel Schaffer
    I just did a fairly significant hardware upgrade while keeping my hard disks. The old system was a dell Optiplex 745 with an Intel Core 2 duo, LGA 775. The new system is custom built, Intel i5 750. I know you're supposed to do a clean install with a hardware upgrade like this, but I'd had success in the past doing the stealth hardware upgrade like this, so I figured I'd give it a shot. Windows 7 Ultimate 64 bit gets through the loading screen and immediately blue screens and reboots. Windows Vista Home Premium 32-bit, which I have on an old hard drive from an AMD box (!!) loads up fine. I ran through the windows memory checker just to be sure, and my memory is fine. So, is the BSOD the result of some sort of protection mechanism specific to Windows 7? Is there any hope of salvaging that install?

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  • Create private key with CSR

    - by Daniel Schlieckmann
    I have a CSR file (as a text file) and the corresponding P7B certificate. My problem is that I have to create a P12 file on a machine where I do not have created the CSR. I have created the CSR in Firefox Key Manager. Before, I imported the P7B file into certificate store in msc, then exported a CER-file, imported it in Key Manager and then exported the P12 file. This doesn't work anymore because I have another machine now. If I try to import the CER file created by msc, Key Manager says that there is no private key. Is there a possibility to create a private key?

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  • Add and remove letterhead in Word document

    - by Daniel Wolf
    Our company has letterheaded paper (pre-printed paper with our logo on it). Whenever we send something out by mail, we print it on that paper. However, when we send the same document via email, we convert it to a PDF file. Now the problem is: when converting a Word document to PDF, it should contain the letterhead. When printing the same document on paper, it should not (or else the letterhead would be printed twice). Currently, we are using two different Word document templates - one with letterhead, one without. So whenever we want to add or remove the letterhead, we have to create a new document with the other template and copy and paste everything over. Nasty solution. What I'm looking for is some simple way to switch the letterhead on and off. What I've tried so far: Switching the template: There does not seem to be a simple way to switch the template for an existing document. Using a picture watermark: Our letterhead goes all the way to the border of the page. (No printer supports this, of course, but it is fine for export to PDF.) Apparently depending on the current default printer, Word will not allow a borderless watermark, instead shifting the image around. Using the page header: When editing the page header, I can insert pictures at arbitrary positions, which is great. However, I could not find a way (short of macros) to enable/disable just the pictures in the header. (The text should remain there.)

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