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Articles indexed in October 2012

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• ER Diagram flaws

  - by spacker_lechuck

  I have the following ER Diagram for a bank database - customers may have several accounts, accounts may be held jointly by several customers, and each customer is associated with an account set and accounts are members of one or more account sets. What design rules are violated? What modifications should be made and why? So far, a few flaws I'm not sure about are: 1) Redundant owner-address attribute in AcctSets Entity. 2) This ER does not include accounts with multiple owners with different addresses. My Question is: How would I go about fixing these flaws and/or other flaws that I may be missing from my analysis? Thanks!

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• Enable vertical scrolling on textarea

  - by Hozefa

  I have a textarea that I want to enable vertical scrolling. When I exceed the height of the textarea, it increases in size. The scroll bar does not appear. I want that a vertical scroll bar appears and the users are not able to resize the text area as well. I searched online and tried solutions posted, but none seem to work. Demo: http://jsfiddle.net/hozefa/8fv6e/ CSS: #imageURLId{ font-size: 14px; font-weight: normal; resize: none; overflow-y: scroll; } HTML: <label for="aboutDescription" id="aboutHeading">About</label> <textarea rows="15" cols="50" id="aboutDescription" style="resize: none;"></textarea> <a id="imageURLId" target="_blank">Go to HomePage</a>

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• Why do I get this error when I try to push my SQLite3 to Postgresql (via Taps) on Cedar Stack?

  - by rhodee

  I've done quite a bit of research on Heroku Dev Center and I am now looking to the community for help. Here is my problem. I can not push my db to Heroku Cedar Stack. I am trying to migrate a sqlite database to postgresql via Taps gem. When I am ready to deploy I run: bundle install --without production heroku run db:push I get the following result: Running db:seed attached to terminal... up, run.17 sh: db:seed: not found heroku run rake db:migrate And when I run the migration: heroku run rake db:migrate I get the following: Running rake db:migrate attached to terminal... up, run.18 rake aborted! No Rakefile found (looking for: rakefile, Rakefile, rakefile.rb, Rakefile.rb) /usr/local/lib/ruby/1.9.1/rake.rb:2367:in `raw_load_rakefile' /usr/local/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile' /usr/local/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling' /usr/local/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile' /usr/local/lib/ruby/1.9.1/rake.rb:1991:in `run' /usr/local/bin/rake:31:in `<main>' Everytime I push to Heroku (git push heroku master) it fails because my gem file is attempting to install sqlite3 gem-even though its inside of the development and test groups in my Gemfile. My database.yml production environment still points to sqlite adapter even after I have run the following command successfully: heroku config:add BUNDLE_WITHOUT="test development" --app app_name_on_heroku Out of ideas. Please help. If its useful I can post results of my gemfile, heroku ps and logs. Cheers UPDATE: After following @John's direction I now receive the following terminal message. Sending schema Schema: 100% |==========================================| Time: 00:00:07 Sending indexes schema_migrat: 100% |==========================================| Time: 00:00:00 Sending data 4 tables, 6 records schema_migrat: 0% | | ETA: --:--:-- Saving session to push_201111070749.dat.. !!! Caught Server Exception HTTP CODE: 500 Taps Server Error: LoadError: no such file to load -- sequel/adapters/ And the following warnings: ["/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:249:in require'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:249:inblock in tsk_require'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:72:in block in check_requiring_thread'", "<internal:prelude>:10:insynchronize'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:69:in check_requiring_thread'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:249:intsk_require'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/database/connecting.rb:25:in adapter_class'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/database/connecting.rb:54:inconnect'", "/app/.bundle/gems/ruby/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:119:in connect'", "/app/lib/taps/db_session.rb:14:inconn'", "/app/lib/taps/server.rb:91:in block in <class:Server>'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865:incall'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865:in block in route'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521:ininstance_eval'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521:in route_eval'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:500:inblock (2 levels) in route!'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497:in catch'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497:inblock in route!'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476:in each'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476:inroute!'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:601:in dispatch!'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411:inblock in call!'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in instance_eval'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:inblock in invoke'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in catch'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:ininvoke'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411:in call!'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:399:incall'", "/app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/auth/basic.rb:25:in call'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979:inblock in call'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in synchronize'", "/app/.bundle/gems/ruby/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979:incall'", "/home/heroku_rack/lib/static_assets.rb:9:in call'", "/home/heroku_rack/lib/last_access.rb:15:incall'", "/app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/urlmap.rb:47:in block in call'", "/app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/urlmap.rb:41:ineach'", "/app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/urlmap.rb:41:in call'", "/home/heroku_rack/lib/date_header.rb:14:incall'", "/app/.bundle/gems/ruby/1.9.1/gems/rack-1.2.1/lib/rack/builder.rb:77:in call'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/connection.rb:76:inblock in pre_process'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/connection.rb:74:in catch'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/connection.rb:74:inpre_process'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/connection.rb:57:in process'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/connection.rb:42:inreceive_data'", "/app/.bundle/gems/ruby/1.9.1/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in run_machine'", "/app/.bundle/gems/ruby/1.9.1/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:inrun'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/backends/base.rb:57:in start'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/server.rb:156:instart'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/controllers/controller.rb:80:in start'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/runner.rb:177:inrun_command'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/lib/thin/runner.rb:143:in run!'", "/app/.bundle/gems/ruby/1.9.1/gems/thin-1.2.7/bin/thin:6:in'", "/usr/ruby1.9.2/bin/thin:19:in load'", "/usr/ruby1.9.2/bin/thin:19:in'"]

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• Connect to a running instance of Visual Studio 2003 using COM, build and read output

  - by codeape

  For Visual Studio 6.0, I can connect to a running instance like: o = GetActiveObject("MSDev.Application") What prog ID do I use for Visual Studio 2003? How do I execute a 'Build Solution' once I have the COM object that references the VS2003 instance? How do I get the string contents of the build output window after executing the build solution command? Yes, I am aware that I can build a solution from the command line. But in this case, I need to connect to a running instance of Visual Studio. EDIT: found and submitted an answer, see below.

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• Sample Browser Visual Studio Extension is localized and introduced to Japan

  - by Jialiang

  http://blogs.msdn.com/b/codefx/archive/2012/10/14/sample-browser-visual-studio-extension-is-localized-and-introduced-to-japan.aspx  ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????From: Japan MVP   "The Sample Browser is very easy to use thanks to the refined interface.  The categorized menu enables faster search. Highly acclaimed.  But it need localization. It may not be a problem for those who can understand English, but I think localizing Sample Browser into Japanese will promote its use in Japan further." This is a prominent feedback collected from the Japan MVP community since we released the last version of Sample Browser, which was only available in English.  Japan developers like the Sample Browser, but they want localized code samples, localized Sample Browser UI, and the localized search experience.  The Japan MVP lead, Satoru Kitabata, observed these needs and expectations.  He started to engage with all local developer MVPs to translate the UI elements in the Sample Browser.  Lots of MVPs signed up to participate in this work.  They had roundtables and newsletters to track the progress.  In short three weeks, every control, every tooltip, every font on every label, was beautifully tuned for Japanese.  The sample search experience was also optimized for Japan developers - they can directly type Japanese query to search for code samples.  Together with Microsoft Japan MVPs, the sample use experience is localized and improved to a new level!    The Japan MVP Lead, Satoru Kitabata, further worked with MSDN Japan site manager and Japan DPE to introduce the good news of localized Sample Browser to Japan Sample Browser  http://msdn.microsoft.com/ja-jp/jj730399 Sample Browser?????? http://msdn.microsoft.com/ja-jp/jj730398     Thanks to the joint effort and Japan MVPs’ feedback and contributions, the Sample Browser gets the chance to benefit the broader Japan developer audience.

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• How-do-I Script Sample Videos

  - by Jialiang

  http://blogs.technet.com/b/onescript/archive/2012/10/14/how-do-i-script-sample-videos.aspx All-In-One Script Framework is featured by customer-driven script samples.  Each sample demonstrates how to automate one specific IT task that is frequently asked in TechNet forums, Microsoft support calls, and social media.   In order to give readers a better and quicker learning experience, the team starts to create short 5- to 10- minute videos to visually demonstrate some script samples.  These videos would show you how to accomplish the task by running the script sample, and illustrate some key script snippets in the sample project.  We sincerely hope that the IT Pro community will love our effort. The first how-do-I video has been published.  It demonstrates one of our recently released Windows 8 script sample: Get Network Adapter Properties in Windows 8 The video is embedded in the sample introduction page.

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• Cannot assign port 4 to WAN on TP-Link WR740N by DD-WRT wiki

  - by Victor Sergienko

  I'm following the DD-WRT instruction to get TP-Link WR740N v3's Port 4 on a different VLAN, but this doesn't happen. First, I have no "Setup VLANs" settinngs tab in DD-WRT v24-sp2 (07/20/12) std r19519. I can get Internet on Wi-Fi if assigning eth1 to "WAN Port", but then all Ethernet ports get on the same VLAN and any wired connection grabs the DHCP address and Internet connection from router. When following the "old" instruction, if I run, say, nvram set vlan2ports="2 5*", should there appear a new interface, vlan2, in ifconfig, after ifconfig vlan2 up? It doesn't - does it mean there is no support for different VLANs in my software/hardware? What am I missing? Is it impossible to create more VLANs on TP-Link740?

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• Registering VPS server: some newbie questions [closed]

  - by Angstrem

  I'm new to VPS in particularly and to servers in general. But it turns out that I need to raise and maintain a VPS server. I've decided to register it at https://nodedeploy.com/ but I have lot's of questions, conducted with it. Does that site provide VPS hosting or it is just a web-site hosting? Will the payments for the VPS be done automatically, or I'll have to do them manually? How do I select a VPS OS that will be installed? How do I get the root password? Will it be available after payment? Is ssh access supported there? How can I cancel my account if something goes wrong with my project? What VPS-hosting service would you recommend for using? Maybe, the questions are really full and newbie, but It's really important for me to know that points. I'll be very grateful for any answers.

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• Ubuntu server apt-get says "(-5 - No address associated with hostname)"

  - by Srini

  I have a ubuntu 12.04 server. Running sudo apt-get update on it produces errors like this: W: Failed to fetch http://au.archive.ubuntu.com/ubuntu/dists/precise-backports/main/binary-i386/Packages Something wicked happened resolving 'au.archive.ubuntu.com:http' (-5 - No address associated with hostname) I am able to ping all the other hosts on the network and also Google's DNS 8.8.8.8. But am unable to ping www.google.com. So, I'm guessing something is wrong with my DNS setup, but not sure what. I use static IP and my /etc/network/interfaces looks like this: auto eth0 iface eth0 inet static address 192.168.1.50 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.0.255 gateway 192.168.1.1 #dns-nameserver 203.12.160.35 203.12.160.36 #nameserver 203.12.160.35 203.12.160.36 My /etc/resolv.conf and /etc/resolvconf/resolv.conf.d/base are both empty and my /etc/resolvconf/resolv.conf.d/original says: nameserver 192.168.1.1 Any help would be greatly appreciated. P.S. I've googled it a bit and the common resolution is to switch to DHCP which I don't want to do since this is my home server. Thanks Srini

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• Installing and configuring email server on debian step by step

  - by webprogrammer

  Can anybody tell me how to install and configure email server on debian step by step? What I mean? I have my own server with my dns. There are several sites on it. So I need: 1) Create emails for each domains, for example, [email protected], [email protected], [email protected] ... Where I can create them? Can I create that email list in file(s), not in mysql? 2) I need send emails from php scripts over smtp-server. 3) I need to read emails in Thunderbird (on Ubuntu, if that matters) and send emails from it over smtp of my domains. I have already installed postfix and dovecot. What's next? Can somebody provide me some HowTos?

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• Binding MySQL to run from the public or private LAN IP address - which one is faster

  - by Lamin Barrow

  So we have 2 servers all running at the same web host. We have bind MySQL to listen on the public ip-address of the database server and the web server connects to it from the public ip. Both servers run on the same private network. Currently, the DB connect method from our php script takes about 3ms to connect to the MySQL database server host. My question is, would MySql data interaction from the web server be faster if we bind it to listen on the private lan address on the database server instead of the public IP? or is it the same regardless and it wont make a different.

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• Web application design with distributed servers

  - by Bonn

  I want to build a web application/server with this structure: main-server sub-server transaction-server (create, update, delete) view-server (view, search) authentication-server documents-server reporting-server library-server e-learning-server The main-server acts as host server for sub-server. I can add many sub-servers and connect it to main-server (via plug-play interface maybe), then it can begin querying data from another sub-servers (which has been connected to the main-server). The sub-servers can be anywhere as long as connected to internet. The main-server can manage all sub-servers which are connected to it (query data, setting permission between sub-servers, etc). The purpose is simple, the web application will be huge as the company grows, so I want to distribute it into small connected plug-able servers. My question is, does the structure above already have a standardized method? or are there any different views? what are the technologies needed? I need a lot of researches before the execution plan begin. thanks a lot.

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• Service redirection on same network

  - by Unode

  I have a network on which I run multiple servers each dedicated to a given service. Because most services run on distinct ports I'm currently looking for a way of unifying "all" services into a single "proxy" machine. The idea is to abstract which machine is being accessed but still allow direct connection if needed/requested. This "proxy" machine has only one network interface which is part of the same network as all the other service providing machines. I've looked into Routing and NAT but I've so far failed to figure out how to make it work. I tried to achieve this using shorewall but couldn't find clear examples. However I'm not entirely sure this is the best/simplest strategy. With that said, what would be the best way of achieving this result? Example case: Proxy IP - Listening port - Send requests to 192.168.0.50 80 192.168.0.1:80 " 22 192.168.0.2:2222 " 3306 192.168.0.3:3000 " 5432 192.168.0.4:5432 " 5222 192.168.0.5:5222 PS: I'm not concerned with the single-point-of-failure nature of the proxy. Thanks

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• why do Vagrant docs suggest using public IP address 33.33.33.10 for local VMs?

  - by Gert

  I'm following a tutorial to set up vagrant (a tool to build and configure portable virtual machine images), and it seems that vagrant documentation suggests using IPv4 address 33.33.33.10 to configure a new box. That is a publicly routed IP adress, so I'm a bit confused why using this address is suggested. Since I don't own this network, I should not use an address from the 33.33.33.10/8 range. Am I correct in thinking that I should only use either a public address from a network I own, or an address from one of the private ranges as defined in RFC 1918? If so, why does Vagrant documentation suggest otherwise?

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• windows 7 is not working with Ubuntu 12.04

  - by Anand Soni

  I have one problem, I am unable to start windows 7 which is installed with Ubuntu 12.04 because I want to utilize all resource in diff. OS. Let me tell you the installation I have done. I have installed everything with USB because my CD ROM is damaged. 1) I have installed Windows 7 in c: then I have installed Ubuntu 12.04 in C: Now when I start my PC it shows list of OS first like -Ubuntu 12.04 -Windows 7 When I click on Windows 7 it do not starts and again shows the list of OS. I have also tried to reinstall the windows 7 using USB but it gives error of something UI or Boot configuration error. Even now Ubuntu 12.04 is also not reinstalling. Now what I want to do is install windows 7 and install ubuntu 12.04 in virtual box so that I can run both system as this is not working. But can't because I can't open Window 7 even can't format my drive. Please suggest something.

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• Combine multiple network interfaces to connect to a dedicated server

  - by Dženis Macanovic

  this is an underpaid employee writing, who's apparently responsible for all the IT stuff in a very small (non-IT) company. Today said company got a bunch of PCs/workstations, a switch, a computer that's supposed to be used as a router, two DSL connections (each 16 MBit/s downstream and 1 MBit/s upstream) and a dedicated server which is hosted and managed professionally by a larger local company with some decent connection speed (1 GBit/s both directions if I'm not mistaken). This is what I've set up (note I'm not making use of the second DSL connection at all)... ETH0 ETH1 [ SWITCH ]---[LINUX DEBIAN ROUTER]---[DSL MODEM 1]---[INTERNET] | | | PC1 | | PC2 | ... ... when my boss asked me, if it was somehow possible to get 32 MBit/s downstream and 2 MBit/s upstream. At that time I replied "no" without thinking too much about it. Now I've just had the following idea... ETH1 ETH0 ETH0 ,---[DSL MODEM 1 (NON-STATIC IP)]---, ,---, ETH0 [ SWITCH ]---[LINUX DEBIAN ROUTER] [INTERNET] [LINUX DEBIAN SERVER]---[INTERNET] | | | '---[ DSL MODEM 2 (STATIC IP) ]---' '---' PC1 | | ETH2 ETH0 PC2 | ... ... but I have absolutely no clue how to implement that. Would that even be possible? What would the masquerading rules look like on the router? What about the server? I didn't find anything on the internet, mainly because I couldn't come up with any good keywords to search for to begin with. English obviously isn't my first language. Thanks in advance for your time!

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• How can I check for a string match AND an empty file in the same if/then bash script statement?

  - by Mike B

  I'm writing a simple bash script to do the following: 1) Check two files (foo1 and foo2). 2) If foo1 is different from foo2 and foo1 NOT blank, send an email. 3) If foo1 is the same as foo2... or foo1 is blank... do nothing. The blank condition is what's confusing me. Here's what I've got to start with: diff --brief <(sort ./foo1) <(sort ./foo2) >/dev/null comp_value=$? if [ $comp_value -ne 0 ] then mail -s "Alert" [email protected] <./alertfoo fi Obviously this doesn't check for blank contents. Any thoughts on how to do that?

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• Create an Alias Directory inside a Virtual Host

  - by Praveen Kumar

  First, let me say, I asked this question in StackOverflow, and thought I could get more replies here. I checked here, here, here, here, here, and here before asking this question. I guess my search skills are weak. I am using the WampServer version 2.2e. I have a need like, I need a virtual path inside a virtual host. Let me say the two hosts that I have. Primary Virtual Host (Localhost) NameVirtualHost *:80 <VirtualHost *:80> ServerName localhost DocumentRoot "C:/Wamp/www" </VirtualHost> My Apps Virtual Hosts <VirtualHost *:80> ServerName apps.ptrl DocumentRoot "C:/Wamp/vhosts/ptrl/apps" ErrorLog "logs/apps-ptrl-error.log" CustomLog "logs/apps-ptrl-access.log" common <Directory "C:/Wamp/vhosts/ptrl/apps"> allow from all order allow,deny AllowOverride All </Directory> DirectoryIndex index.html index.htm index.php </VirtualHost> My Blog Virtual Host <VirtualHost *:80> ServerName blog.praveen-kumar.ptrl DocumentRoot "C:/Wamp/vhosts/ptrl/praveen-kumar/blog" ErrorLog "logs/praveen-kumar-ptrl-error.log" CustomLog "logs/praveen-kumar-ptrl-access.log" common <Directory "C:/Wamp/vhosts/ptrl/praveen-kumar/blog"> allow from all order allow,deny AllowOverride All </Directory> DirectoryIndex index.html index.htm index.php </VirtualHost> My requirement now is to have http://apps.ptrl/blog/ and http://blog.praveen-kumar.ptrl/ should be the same directory. One thing I thought of is, moving the blog folder inside the apps folder, but it is connected with Git and other stuffs are there, so it is not possible to move the folder. So, I thought of creating an alias to the VirtualHost in this way: <VirtualHost *:80> ServerName apps.ptrl DocumentRoot "C:/Wamp/vhosts/ptrl/apps" ErrorLog "logs/apps-ptrl-error.log" CustomLog "logs/apps-ptrl-access.log" common <Directory "C:/Wamp/vhosts/ptrl/apps"> allow from all order allow,deny AllowOverride All </Directory> DirectoryIndex index.html index.htm index.php # The alias to the blog! Alias /blog "C:/Wamp/vhosts/ptrl/praveen-kumar/blog" <Directory "C:/Wamp/vhosts/ptrl/praveen-kumar/blog"> allow from all order allow,deny AllowOverride All </Directory> </VirtualHost> But when I tried to access http://apps.ptrl/blog, I am getting an Error 403 Forbidden page. Am I doing the right thing? If you need to look at the access log, and error log, they are here: # Access Log 127.0.0.1 - - [14/Oct/2012:09:53:11 +0530] "GET /blog HTTP/1.1" 403 206 127.0.0.1 - - [14/Oct/2012:09:53:11 +0530] "GET /favicon.ico HTTP/1.1" 404 209 127.0.0.1 - - [14/Oct/2012:09:53:53 +0530] "GET / HTTP/1.1" 200 6935 127.0.0.1 - - [14/Oct/2012:09:53:53 +0530] "GET /app/blog/thumb.png HTTP/1.1" 404 216 # Error Log [Sun Oct 14 09:53:11 2012] [error] [client 127.0.0.1] client denied by server configuration: C:/Wamp/vhosts/ptrl/praveen-kumar/blog [Sun Oct 14 09:53:11 2012] [error] [client 127.0.0.1] File does not exist: C:/Wamp/vhosts/ptrl/apps/favicon.ico [Sun Oct 14 09:53:53 2012] [error] [client 127.0.0.1] File does not exist: C:/Wamp/vhosts/ptrl/apps/app/blog, referer: http://apps.ptrl/ Waiting eagerly for some help. I am ready to provide more info, if needed. Update #1: Changed VirtualHosts: <VirtualHost *:80> ServerName apps.ptrl DocumentRoot "C:/Wamp/vhosts/ptrl/apps" ErrorLog "logs/apps-ptrl-error.log" CustomLog "logs/apps-ptrl-access.log" common # The alias to the blog! Alias /blog "C:/Wamp/vhosts/ptrl/praveen-kumar/blog" <Directory "C:/Wamp/vhosts/ptrl/praveen-kumar/blog"> allow from all order allow,deny AllowOverride All </Directory> <Directory "C:/Wamp/vhosts/ptrl/apps"> allow from all order allow,deny AllowOverride All </Directory> DirectoryIndex index.html index.htm index.php </VirtualHost> The issue now: I am able to access the site. The physical links are working now. i.e., I am able to open http://apps.ptrl/blog/index.php but not http://apps.ptrl/blog/view-1.ptf, which gets translated to http://apps.ptrl/blog/index.php?page=view&id=1. Any solutions?

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• Can I install a tool like Zimbra or Funambol on a server that is already managed by Syscp?

  - by bensch

  I have a server that is managed by Syscp. The question is, if there are unresolveable dependencies, or services, that are managed by syscp already? For example Zimbra is intended using postfix but syscp is managing that already. I guess, that will not be possible, but maybe without having the full functionality of Zimbra. I only need the calendar and contacts-support with CalDav. (besides: I am using debian sqeeze but this is interesting in general)

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• CentOS openLDAP cert trust issues

  - by 84104

  # LDAPTLS_CACERTDIR=/etc/ssl/certs/ ldapwhoami -x -ZZ -H ldaps://ldap.domain.tld ldap_start_tls: Can't contact LDAP server (-1) additional info: TLS error -8172:Peer's certificate issuer has been marked as not trusted by the user. # openssl s_client -connect ldap.domain.tld:636 -CApath /etc/ssl/certs <... successful tls negotiation stuff ...> Compression: 1 (zlib compression) Start Time: 1349994779 Timeout : 300 (sec) Verify return code: 0 (ok) --- openssl seems to think the certificate is fine, but openldap's libraries (pam_ldap exhibits similar behavior, which is how I got on to this mess) disagree. What am I doing wrong?

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• Monitoring AWS Systems Behind ElasticBeanStalk

  - by A. Avadis

  So I'm getting a company set up in the Amazon Cloud -- creating IAAS protocol/solutions/standardized implementation, etc while also being the SysAdmin for individual systems, app environments, and day-to-day uptime. One of the biggest issues I'm having is tracking various system/application logs, as well as logging/monitoring/archiving system metrics like memory usage, cpu usage, etc etc In a centralized fashion. E.g. -- Nagios + Urchin. The BIGGEST impediment to my endeavors is the following: The company application is deployed in the form of a Java *.WAR file, uploaded to an Elastic BeanStalk application environment, load balancing and auto-scaling between 3(min) and 10(max) servers, and the EC2's that run the application are fired up and disposed of ad-hoc. That is to say, I can't monitor the individual EC2's for very long because so many are being terminated then auto-provisioned/auto-scaled on the fly -- so I'd constantly be having to "monitor what I'm monitoring", and continuously remove/add EC2 machine addresses to my monitoring lists. IS there some sort of way to use monitoring tools like Zabbix or Nagios to monitor the ElasticBeanStalk, and have it automatically add on new EC2's, and remove terminated/failed EC2's from its monitoring list automatically? Furthermore, is there anything I can do with GrayLog to achieve similar results with the aggregation/centralization of my application logs from multiple EC2 instances into ONE consolidated set of logs/events? If not GrayLog, is there ANYTHING LIKE GrayLog that can automatically detect what EC2 members are being added/removed from the environment, and collect the logs from them automatically? Any and all advice or direction is appreciated. Thanks much, and cheers!!

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• Haproxy not properly passing on X-Forwarded-For header

  - by JesseP

  I have backend web servers that receive requests by way of haproxy-nginx-fastcgi. The web app used to see multiple ip's coming through in the X-Forwarded-For header, chained together with commas (most original IP on the left). At some point in the recent past (just noticed, so not sure what caused it) something changed, and now I'm only seeing a single IP passed in the header to my web application. I've tried with haproxy 1.4.21 and 1.4.22 (recent upgrade) with the same behavior. Haproxy has the forwardfor header set: option forwardfor Nginx fastcgi_params config defines this header to be passed to the app: fastcgi_param HTTP_X_FORWARDED_FOR $http_x_forwarded_for; Anyone have any ideas on what might be going wrong here? EDIT: I just started logging the $http_x_forwarded_for variable in nginx logs, and nginx is only ever seeing a single IP, which shouldn't ever be the case, as we should always see our haproxy ip added in there, right? So, issue must either be in nginx handling of the variable coming in, or haproxy not building it properly. I'll keep digging... EDIT #2: I enabled request and response header logging in HAProxy, and it is not spitting anything out for X-Forwarded-For, which seems very odd: Oct 10 10:49:01 newark-lb1 haproxy[19989]: 66.87.95.74:47497 [10/Oct/2012:10:49:01.467] http service/newark2 0/0/0/16/40 301 574 - - ---- 4/4/3/0/0 0/0 {} {} "GET /2zi HTTP/1.1" O Here are the options i set for this in my frontend: mode http option httplog capture request header X-Forwarded-For len 25 capture response header X-Forwarded-For len 25 option httpclose option forwardfor EDIT #3: It really seems like haproxy is munging the header and just passing on a single one to the backend. This is fairly impacting to our production service, so if anyone has an ideas it would be greatly appreciated. I'm stumped... :(

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• JVM memory initializazion error after windows update

  - by gianni

  We have three Windows Server 2003 with 2 GB RAM. Server1 tomcat 5.5.25 jvm version SUN 1.6.0_11-b03 Server2 tomcat 5.5.25 jvm version SUN 1.6.0_14-b08 Server3 tomcat 6.0.18 jvm version SUN 1.6.0_14-b08 For the three servers JVM parameters are: -XX:MaxPermSize=256m -Dcatalina.base=C:\Programmi\Apache Group\apache-tomcat-5.5.25 -Dcatalina.home=C:\Programmi\Apache Group\apache-tomcat-5.5.25 -Djava.endorsed.dirs=C:\Programmi\Apache Group\apache-tomcat-5.5.25\common\endorsed -Djava.io.tmpdir=C:\Programmi\Apache Group\apache-tomcat-5.5.25\temp vfprintf -Xms512m -Xmx1024m For some months everithing worked fine. Last friday we installed some windows updates. After the reboot tomcat doesnt start with error: Error occurred during initialization of VM Could not reserve enough space for object heap We reduced the parameter -Xmx1024m to -Xmx768m and now tomcat starts. But we need greater max heap size What happened to our servers ? Thanks in advance.

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• My computer gets hosted when using 3G

  - by WeaklyTyped

  I recently activated 3G(UMTS) connection on my cellular network. I use Nokia S60 phone as a modem while connecting from Scientific Linux 6. While I am able to access net pretty well, the problem is my computer gets hosted. By using ip-address in a web-browser, anyone can access my localhost (running apache), this never happens with my wireline (ADSL) connection. Furthermore, even the Shell prompt changes from: [mach2@localhost ~]$ to [[email protected] ~]$ where XX.XX.XX.XX is the IP of the 3G connection. The very thought of putting my machine 'in the wild' is disconcerting. How can I rectify the situation without disabling services like apache, sshd and others?

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• Misbehavior in regular expression in VIM

  - by poissonbreaker

  I am having a problem with a regular expression on vim. I have a pattern as follows: http:\/\/\(\w\+\.\?\)\+ [matches http://(AS MANY WORDS FOLLOWED BY DOT OR NOT ENCOUNTERS) e.g. http://wd1.wd2.com] I have a text as follows: http://wd1.wd2.com/wd3 I am trying to make this substitution on it: s/\(http:\/\/\)\(\w\+\.\?\)\+/\1wd4.wd5.com and the result is http://wd4.wd5.com /wd3 (Notice the white space inserted at the end of the replacement) How can I avoid having this inserted space? I am afraid is a bug in the regexp engine but I am not sure.

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