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• Invalid command 'VirtualDocumentRoot'

  - by andy

  I'm unsure as to why I'm getting the following error when apache is rebooted: Invalid command 'VirtualDocumentRoot', perhaps misspelled or defined by a module not included in the server configuration Action 'start' failed. The snippet it is referring to is this: <VirtualHost *:80> ServerAdmin [email protected] VirtualDocumentRoot /local/www/staging/%1 ServerAlias *.staging.mydomain.com </VirtualHost> I assumed it was a misspelling as it said, but it was copied directly from another server of mine. It works perfect there. Any ideas?

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• Nginx 'if' statement in http context?

  - by andy

  I want to set a variable in the http context of nginx so it applies to all my servers. However, 'if' is only supported in server & location. How can I set a variable in the http context so it will affect all servers? Might the lua module be able to help with this (although I'd rather have a pure nginx solution). If so, please provide an example. I just want to set the following variable so it applies to all servers: # only allow gzip encoding. For all other cases, use identity (uncompressed) if ($http_accept_encoding ~* "gzip") { set $sanitised_accept_encoding "gzip"; } if ($http_accept_encoding != "gzip") { set $sanitised_accept_encoding ""; }

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• Windows Server 2008 and port 80

  - by Frank

  Hi experts, I'm having an issue with my Windows Server 2008. I can successfuly connect to it with FTP(port 21), remote desktop(whatever the port number is), https but not with simple http or port 80, from the outside of my LAN. Is there some settings I don't know about regarding this special port on the firewall or on IIS7? For your information, I can connect to port 80 as long as I'm on the same LAN, but as soon as the request come from the outside, I get nothing... Please help Thank you

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• Win 7 Remote Desktop connection failure when already logged in.

  - by Andy E

  I have a bit of a strange problem, magnified recently by my broadband dropouts. I wasn't sure whether to post this on SU or SF, so I thought I'd start here as more users would be likely to know what the problem is. In short, when I try and connect to my server (Windows Server 2008) from my laptop running Windows 7, I can only connect if my remote account was previously logged out. If I'm still logged in I get the error message: Windows cannot connect to the remote server. No explanation or anything. If my IP address is the same, I don't have this problem. If I boot up Windows XP Mode and run XP's remote desktop connection it works just fine -- I think the difference there is it takes me to the remote server's logon screen. With Win 7 RDC you never see the logon screen, it asks you for credentials before entering full screen mode. The real problem is that I'm having random broadband dropouts and my IP isn't static. If I logon via Win XP RDC, log out and then run Win 7 RDC then it works fine. I realize I can just use Win XP's RDC for now, but I don't really like keeping XP Mode open if I can help it. Does anyone know a way around this problem? Maybe forcing Win 7 RDC to go to the logon screen, or changing some server-side settings to work around the IP address issue?

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• how to install OpenSSL in windows 7 and also how to check, its enabled or not?

  - by Andy

  how to install OpenSSL in windows 7 and also how to check, its enabled or not? I currently run php through the command line locally not on a server. Thanks I recently installed php 5.2.17 I ran a program which connect with a https server and I got the following error Notice: file_get_contents(): Unable to find the wrapper "https" - did you forget to enable it when you configured PHP? in C:\java\newsweaver-api-v2\simple\list- tags.php on line 30 I added extension=php_openssl.dll to php.ini but I'm wondering is openssl native to php 5.2.17 or do I need to download an extntion. Thanks

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• monitoring TCP/IP performance on Solaris

  - by Andy Faibishenko

  I am trying to tune a high message traffic system running on Solaris. The architecture is a large number (600) of clients which connect via TCP to a big Solaris server and then send/receive relatively small messages (.5 to 1K payload) at high rates. The goal is to minimize the latency of each message processed. I suspect that the TCP stack of the server is getting overwhelmed by all the traffic. What are some commands/metrics that I can use to confirm this, and in case this is true, what is the best way to alleviate this bottleneck?

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• Where on my C:/ or D:/ drive is the Windows startup directory ?

  - by Frank

  I am developing a Java program that needs to run when user turns on his PC, I was suggested to : create a .bat file @javaw -jar path/to/jar/Name.jar arguments drop this in the Windows startup directory My question is : Can my Java program save the above file into the Windows startup directory ? Where is this Windows startup directory on the C: or D: drive ? How can my Java app find out the location ? Is it the same on all versions of Windows ?

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• Google Apps Question

  - by Andy

  I was recently hacked by a person I know who I happened to make an account using my hacked email. I was wondering how I can close off Google Apps without logging in. (I have FTP and such, and I deleted the nameservs already)

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• Maintaining a set of (virtual) windows XP machines

  - by Frank Meulenaar

  I have a small set (currently 3, going to 6, not going to be more than 10) of (virtual, vmware workstation) windows XP machine's. They are similar but not exactly the same. I'm currently rolling out windows updates etc by hand: start machine 1, update, close, etc; I'd like to review the updates first before the clients can install them. Incidentally there are also other updates to be performed: changes some files on all machines, install new Java versions, etc. What's a good way of doing this automatic? I tried to search for this but things like Active Directory seem overkill to me.

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• How can I insert the quoted price of gold from kitco.com into my excel spreadsheet?

  - by Frank Computer

  kitco.com provides a realtime price quote for gold and other metals. I have a spreadsheet which makes calculations based on the price of gold and would like for this realtime value to automatically be updated on my excel sheet. I tried 'get external data' from a website but that didn't work. any ideas? EDIT ADDED: Kitco has a gadget called KCAST which displays realtime quotes on the Windows taskbar. I tried capturing those values from the taskbar but that didn't work either. Maybe if Kitco provided an API or feed, it could be done?

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• Iozone: sensible settings for a server with lots of RAM

  - by Frank Brenner

  I have just acquired a server with: 2x quadcore Xeons 48G ECC RAM 5x 160GB SSDs on an LSI 9260-8i Before deploying the target platform, I'd like to collect as much benchmark data as possible, testing I/O with hardware RAID in various configurations, ZFS zRAID, as well as I/O performance on vSphere and with KVM virtualization. In order to see real disk I/O performance without cache effects, I tried running Iozone with a maximum file of more than twice the physical RAM as recommended in the documentation, so: iozone -a -g100G However, as one might expect, this takes far too long to be practicable. (I stopped the run after seven hours..) I'd like to reduce the range of record and file sizes to values that might reflect realistic performance for an application server, hopefully getting the run times to under an hour or so. Any ideas? Thanks.

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• Load testing nginx inside AWS

  - by andy

  I'm trying to load test nginx running on AWS. I need to try to optimise it to handle 1Gbps of inbound traffic. Currently I've got it to peak at 85Mbit/s by running nginx on an m1.large with 4 other machines hitting it by using ab with -i (for head requests) -k (keepalives) -r (ignore failed requests) -n 500000 -c 20000. I'm struggling to generate more than 85 Mbit/s traffic from 4 machines, yet when I do scp a large file I get nearly 0.25Gbit/s of traffic going over the network. Are there any tools or approaches that I could use to load test nginx that might generate more load? I'm only interested in inbound traffic, so perhaps a DoS tool could help if it chucks away responses? I'm hitting a very small (40 byte) static asset, and have peaked at handling 50K concurrent connections and getting 25k reqs/s when just using a single load generator machine.

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• 412 Precodition Failed error only occurs on certain networks

  - by Andy

  One of my favorite websites: http://jessiejofficial.com (yes, I'm a Jessie J Fan :')) has recently started displaying the error message "412 Precondition Failed" whenever I visit it from my home network, even when I use Tor Browser. At first I thought that this was an issue with the whole website, however I have contacted the web developer and he has said that they has been plenty of hits within the last 48 hours. Plus, I discovered tonight that I can access the website from my phone, through the mobile network. So it appears to just be my network as all of the devices in my house connected to the WiFi display the same error when I try to visit any page of the site. However there have been no changes that we are aware of or are noticeable to our network since the website was accessible, and I have just heard that another person in a different part of the country is experiencing the same difficulties also. Any help/advice/suggestions would be appreciated greatly Update: When trying to ping 'jessiejofficial.com' in Windows command prompt the request times out on all four attempts, on any computer connected to the wireless network. I can now also confirm that the same thing occurs on my MacBook Pro.

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• Lotus Notes won't open a hyperlink/uri in a browser!

  - by Andy O

  I'm still new to Lotus, but I have LN 8.0.2, and have it set up to open hyperlinks "using the browser i have set as the default for this operating system" which in my case is Firefox 3.6.13. If I try to select "use the browser embedded in this client" then it just forgets it after I click save (ie if i go back into preferences it's reset to the default for this operating system option) Windows XP SP 3. Whenever I click on a link in an email...memo... then it does nothing and flashes an underscore underneath it. It's so basic and so annoying there must be something I'm missing. Any help please!

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• Cannot flush the DNS on Snow Leopard 10.6.8

  - by Andy Woggle

  I have an absolutely bizarre problem and it has STUMPED me.. I cannot seem to flush the DNS on my Snow Leopard 10.6.8. I have tried sudo dscacheutil -flushcache , i've tried dscacheutil -flushcache and it hasn't worked. I'm building a website, and changed the directories yesterday. Now when I check it on my other machine, it works fine. When I get somewhere from distance to check, it works fine, but it's seemingly stuck in the DNS on this machine as the CSS is not showing. Is there a hard-flush method (if that makes sense)? The two above did not work.

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• Comparison of Unix shells

  - by Andy White

  Of the major Unix shells (bash, ksh, tcsh, zsh, others?), are there any compelling reasons to use one over another? Which is the most interactive/command-line friendly? Which is the most conducive/intuitive for writing scripts? Are there any major built-in features that one shell offers that others don't? Are any of these shells really good for one type of function, but not another? Or are they all pretty well-rounded/flexible? Is it just a matter of personal preference? I can make this community wiki if anyone prefers.

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• Compare-Object gives false differences

  - by Andy

  I have some problem with Compare-Object. My task is to get difference between two directory snapshots made at different times. First snapshot is taken like this: ls -recurse d:\dir | export-clixml dir-20100129.xml Then, later, I get second snapshot and load both of them: $b = (import-clixml dir-20100130.xml) $a = (import-clixml dir-20100129.xml) Next, I'm trying to compare with Compare-Object, like that: diff $a $b What I get is in some places files that were added to $b since $a, but in some -- files that were in both snapshots, and some files, that were added to $b, are not given in Compare-Object output. Puzzling, but $b.count - $a.count is EXACTLY the same as (diff $a $b).count. Why is that? Ok, Compare-Object has -property param. I try to use that: diff -property fullname $a $b And I get the whole mess of differences: it shows me ALL the files. For example, say $a contains: A\1.txt A\2.txt A\3.txt And $b contains: X\2.mp3 X\3.mp3 X\4.mp3 A\1.txt A\2.txt A\3.txt diff output is something like that: X\2.mp3 => A\1.txt <= X\3.mp3 => A\2.txt <= X\4.mp3 => A\3.txt <= A\1.txt => A\2.txt => A\3.txt => Weird. I think I don't understand something crucial about Compare- Object usage, and manuals are scarce... Please, help me to get the DIFFERENCE between two directory snapshots. Thanks in advance UPDATE: I've saved data as plain strings like that: > import-clixml dir-20100129.xml | % { $_.fullname } | out-file -enc utf8 a.txt And results are the same. Here're excerpts of both snapshots (top 100-something lines, a.txt and b.txt), output of compare-object, and output of UNIX diff (unified). All files are UTF-8: http://dl.dropbox.com/u/2873752/compare-object-problem.zip

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• D Link DSL G624T Router will work wirelessly but not via cable

  - by Andy Fensome

  I have a D Link router which works in providing a wireless internet connection for my main PC and secondary notebook. I have been advised that the internet connection to the main pc will be better if I wire the router directly to the PC. I have tried this and can not get a connection. I just keep getting the message network cable unplugged. I have had the ethernet adaptor checked out on the pc and the cable is good ( also checked out). Anything I can do or do I have a bad router. I have tried the cable in all 4 ports and the message is still the same.

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• Can an UPS be too powerful?

  - by Andy

  Our old network admin bought the top range UPS a few months ago but never came around to setting it up and is no longer with the company. Now the old UPS broke down and needs to be replaced, but an external company that did an audit said that that UPS won't work. Now we are no hardware specialists, but the difference in specs is a higher output from 5A to 8.8A meaning a higher output. But isn't the UPS supposed to give the server the required output anyway? This 'independent' audit does sell its own hardware including UPSes so I'm not sure how much bias they have. Is there a reason why we can't replace the old broken UPS with the new more powerful one? Is there a way we can check to see if the UPS works with our server? ok, i wrote down the numbers again, the Volts and Amps are what are on the back (where you connect up the plugs which seem diffrent from on the front label.) old one APC SmartUPS 1500 220-240V -- 6.8A new one Dell UPS 1920W 250V -- 10A

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• How can I too many files upload more fast way to Cloud files in Rasckspace?

  - by andy kim

  I have a lot of image files, it's all I want to upload to RackSpace cloud files about a million in a single directory the fastest and most efficient way. but I'm use uploading python-cloudfiles script is very slow and I want to know different ways or python script code. because one by one connection upload is very slow. I think one files tar and uncompress directory is better way. but cloudfiles do not support this way. Who know any other way?

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• What directories I must backup for reinstalling Windows 7?

  - by gsc-frank

  I'm reinstalling a Windows 7 PC and want backup all the system, application and users data to latter decide what data can be useful. What directories I must backup? I will format the PC and all importante data must be saved. I have doubts particularly about C:\Users\USER_NAME\AppData and how save it using a Ubuntu live CD in case I don't have access to the Windows 7 PC. AppData have a lot of syslink inside!

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• Can the Nikon D50 be hacked to record video?

  - by andy

  I mean hacked in terms of software only, and minor hardware hacking if necessary, without of course breaking the camera. Also, if possible, video should be able to be recorded at an acceptable frame rate, around 20fps. thanks p.s. Reason for this question: Just to give some context before people tell me to buy a new camera! For still photography I now almost exclusively shoot film with a Nikon F3, and my D50 is gathering dust. I want to shoot some video of my Capoeria classes, for personal use, and thought maybe I could put my D50 to good use. Yes, I could buy a D5000 or older D90, but really I just want to shoot some video with my nice wide Nikkor lenses at no extra cost!

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• First-class help desk solution? [closed]

  - by Andy Gregory

  A help desk, for larger companies is a place for centralized help within an enterprise to help the users of their products and services.Therefore,to find the solution that best fits your business requirements, it is important to research, examine, and compare help desk software. As far as I know,Hesk is an free helpdesk software with some limited features while h2desk can provide the hosted solution. But for my small business,i just need a web based help desk software which can provide ticket management and knowledge base faq. We need unlimited staff support. Maybe a freeware help desk software can not meet our needs. So,we are willing to pay for effective helpdesk solution. But it should be low cost. We have gotten two choice: iKode Helpdesk Nethelpdesk Our helpdesk team are tend to iKode Helpdesk. Any other efficient first-class help desk solution to share?

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• Own mediawiki/wikipedia naming convention for pages

  - by Andy M

  I recently installed a mediawiki at home and I'm looking for a way to name pages. Let's say I have the following structure : Main - Dev - C# - Tips Main - Cooking - Mexixan Cooking - Tips Main - Annoying my girlfriend - Tips Each final page is a different Tips page. Naming them only "tips" won't work because I need three different pages. Now, I could name each of my tips page with its "path" (ex: main_cooking_mexican_cooking_tips) but it looks cumbersome and the problem is that, whenever I'll change the structure of my mediawiki, some pages will need to change their name in order to be corrects. Does it exist some convention to follow regarding this ? Thanks for your help !

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• (Some) security perms in WinXP corrupted (shows GUID instead of username)

  - by Andy

  I've been using my Win XP machine (part of a domain) over the holiday period, so until yesterday it hadn't rebooted for about five days. I used it yesterday perfectly fine and shut it down. When I switched it on this morning the majority (but not all) of my shortcut links in the Quick Launch toolbar showed as generic file icons. If you open the folder and get properties on one of the failing shortcuts it says ''Target type: This is not a valid shortcut''. Then in Outlook I noticed my signature wasn't showing (I checked my sent folder and the sig was ok yesterday). Checking the signature folder, I can't see the security tab on any of the sig files, and I have an access denied message on trying to open them. I can see the security tab on the signature folder itself, just none of the contents. If I try and use the parent folder's security tab and ''Replace permission entries on all child objects with entries shown here that apply to child objects'' it appears to work fine, but makes no actual difference. I logged in as administrator and saw that the owner of the files showed up as a GUID (clearly should've been my account in its place). Any ideas what might have made that happen? So far I haven't heard any similar complaints from anyone else at the office...

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