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• Apache Name-based Virtual Hosts - configuring httpd.conf file

  - by Dave

  Hi there. I am running a web app on Tomcat at the following location on my server. /var/tomcat/webapps/SoccerApp I am looking to update the Tomcat httpd.conf file with the following virtual host... <VirtualHost *:80> DocumentRoot /var/tomcat/webapps/SoccerApp/MyTeam ServerName www.mysoccerapp.com </VirtualHost> This gives me a 404 error as the directory MyTeam does not exist. However my application behaves in a way that it uses this URL directory as the name of the soccer team for which to display data, so it will never be a physical folder on the server. None the less, I would like www.mysoccerapp.com to resolve to webapps/SoccerApp/MyTeam, even though the directory isnt there. does this make any sense? Any ideas on how to get this working. At the end of the day, i want to do the following... www.teamone.com -> runs /webapps/SoccerApp/TeamOne www.teamone.com -> runs /webapps/SoccerApp/TeamTwo ...where TeamOne and TeamTwo are not physical directories, but merely processed by my SoccerApp application as the current soccer team to display data for. Many many thanks! Dave.

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• Free, simple, configurable SOCKS5 server

  - by Pooria Azimi

  I've been looking (for the past 6-7 hours) for a fast, free and configurable SOCKS5 server. I haven't found anything that matches my needs. They are either too complicated, too bare-bones or simply buggy as hell. This is (all) I need: I want it to run on Linux (and also OS X, preferably) I want it to listen on localhost:8888 When my app (say wget.. or curl --socks5=localhost:8888) requests http://www.google.com/search?q=asd (or any other url - both http and https), I want it to fetch the page not from google's servers, but from http://localhost:4444/cached?uri=http://www.google.com/search%3Fq%3Dasd. Nothing more! I don't need caching, or anything else. I just want a SOCKS5 server, running locally, which redirects all queries to my own (local) server. It could be written in C, C++, Python, PHP, Perl, Node.js or any other language. I don't care, as long as it supports my (very limited) needs, or I can easily change the source to make it so. Thanks a lot

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• Blocking HTTPS and P2P Traffic

  - by Genboy

  I have a Debian server running at the gateway level on a LAN. This runs squid for creating block lists of websites - for eg. blocking social networking on the LAN. Also uses iptables. I am able to do a lot of things with squid & iptables, but a few things seem difficult to achieve. 1) If I block facebook through their http url, people can still access https://www.facebook.com because squid doesn't go through https traffic by default. However, if the users set the gateway IP address as proxy on their web browser, then https is also blocked. So I can do one thing - using iptables drop all outgoing 443 traffic, so that people are forced to set proxy on their browser in order to browse any HTTPS traffic. However, is there a better solution for this. 2) As the number of blocked urls increase in squid, I am planning to integrate squidguard. However, the good squidguard lists are not free for commercial use. Anyone knows of a good squidguard list which is free. 3) Block yahoo messenger, gtalk etc. There are so many ports on which these Instant Messenger softwares work. You need to drop lots of outgoing ports in iptables. However, new ports get added, so you have to keep adding them. And even if your list of ports is current, people can still use the web version of gtalk etc. 4) Blocking P2P. Haven't been able to figure out how to do this till now.

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• Site hanging in iis7 - how do I troubleshoot?

  - by Chris Foot

  I am currently having a problem with a windows 2008 server running IIS 7. The server runs several sites but only seems to have the issue with one particular site. Every so often, the whole server slows to a crawl with nearly all requests timing out! Invariably, when we log in to take a look there is always an IIS process using up around 90% cpu. Looking into the worker processes in IIS there are usually one or two requests that have been running for a long time. They are always in the ExecuteRequestHandler state with ManagedPipeline as the module name and the current ones i'm looking at have been running for 7686248 (what units is this in, it doesn't say?). It is also not always the same page, in fact we have seen at least 3 different pages listed under url when this has happened. It seems that the only way to bring the server back to life is to kill the 90% process! The site is running under .Net 4.0 and the code on it is very similar to other sites on the server which do not have the problem! How do I start troubleshooting this?

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• wget crawling search results of news website

  - by kiltek

  I am trying to crawl the search results of a news website using wget. The name of the website is www.voanews.com. After typing in my search keyword and clicking search, it proceeds to the results. Then i can specify a "to" and a "from"-date and hit search again. After this the URL becomes: http://www.voanews.com/search/?st=article&k=mykeyword&df=10%2F01%2F2013&dt=09%2F20%2F2013&ob=dt#article and the actual content of the results is what i want to download. To achieve this I created the following wget-command: wget --reject=js,txt,gif,jpeg,jpg \ --accept=html \ --user-agent=My-Browser \ --recursive --level=2 \ www.voanews.com/search/?st=article&k=germany&df=08%2F21%2F2013&dt=09%2F20%2F2013&ob=dt#article Unfortunately, the crawler doesn't download the search results. It only gets into the upper link bar, which contains the "Home,USA,Africa,Asia,..." links and saves the articles they link to. It seems like he crawler doesn't check the search result links at all. What am I doing wrong and how can I modify the wget command to download the results search list links (and of course the sites they link to) only ?

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• Error compiling PHP 5.5.9 on CentOS 6.5 during make command

  - by Chris Mancini

  Here is the error message: cc: internal compiler error: Killed (program cc1) Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions. make: *** [ext/fileinfo/libmagic/apprentice.lo] Error 1 The very last thing make was processing is apprentice.lo which appears to be part of the image manipulation libraries (maybe?). I am using Ansible to provision my instance. It is a Digital Ocean single core 512MB VM. I have been using vagrant / ansible with the same config locally for dev and it has compiled fine, this is the first cloud VM I am attempting to provision. The only difference is the base image for my DO server is coming from DO and for my local dev, I built my own Vagrant box via VirtualBox from a stock CentOS basic server install. I pull it down from my DropBox. The problem has been experienced by others and reported as a php bug report My php ansible role up to the error: --- - name: Download php source get_url: url={{ php_source_url }} dest=/tmp register: get_url_result - name: untar the source package command: tar -xvf php-{{ php_version }}.tar.gz chdir=/tmp when: get_url_result.changed or php_reinstall - name: configure php 5.5 command: > ./configure --prefix={{ php_prefix }} --with-config-file-path={{ php_config_file_path }} --enable-fpm --enable-ftp --enable-mbstring --enable-pdo --enable-soap --enable-sockets=shared --enable-zip --with-curl --with-fpm-group={{ nginx_group }} --with-fpm-user={{ nginx_user }} --with-freetype-dir=/usr/lib64/ --with-gd --with-jpeg-dir=/usr/lib64/ --with-libdir=lib64 --with-mcrypt --with-openssl --with-pdo-mysql --with-pear --with-readline --with-tidy --with-xsl --with-zlib --without-pdo-sqlite --without-sqlite3 chdir=/tmp/php-{{ php_version }} when: get_url_result.changed or php_reinstall - name: make clean when reinstalling command: make clean chdir=/tmp/php-{{ php_version }} when: php_reinstall - name: make php command: make chdir=/tmp/php-{{ php_version }} when: get_url_result.changed or php_reinstall Thanks in advance for any help. :)

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• FFmpeg creates emtpy (black) frames

  - by resamsel

  I have a set of images from a timelapse shot (172 JPG files) that I want to convert into a movie. I tried several parameters with FFmpeg, but all I get is a video with black frames (though it has the expected length). ffmpeg -f image2 -vcodec mjpeg -y -i img_%03d.jpg timelapse2.mpg The command above creates this video: http://sdm-net.org/data/timelapse2.mpg What I'm expecting is something like this (created with Time Lapse Assembler.app): https://vimeo.com/39038362 - This is my fallback option, but I'd really like to create timelapse movies from a script. I'm on OSX Lion (10.7.3) with FFmpeg version (0.10) installed via Homebrew. I also tried to find a proper version of mencoder for OSX, but this doesn't seem to be an easy task. Also, ImageMagick's convert doesn't seem to work nicely, it creates really bad output and it seems there's not much I can do about it... Edit: With libx264 and an mp4 container: ffmpeg -f image2 -y -i img_%03d.jpg -vcodec libx264 timelapse4.mp4 Output: ffmpeg version 0.10 Copyright (c) 2000-2012 the FFmpeg developers built on Mar 26 2012 13:47:02 with clang 3.0 (tags/Apple/clang-211.12) configuration: --prefix=/usr/local/Cellar/ffmpeg/0.10 --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-libfreetype --cc=/usr/bin/clang --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --disable-ffplay libavutil 51. 34.101 / 51. 34.101 libavcodec 53. 60.100 / 53. 60.100 libavformat 53. 31.100 / 53. 31.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 60.100 / 2. 60.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 6.100 / 0. 6.100 libpostproc 52. 0.100 / 52. 0.100 Input #0, image2, from 'img_%03d.jpg': Duration: 00:00:06.88, start: 0.000000, bitrate: N/A Stream #0:0: Video: mjpeg, yuvj420p, 3888x2592 [SAR 72:72 DAR 3:2], 25 fps, 25 tbr, 25 tbn, 25 tbc [buffer @ 0x7f8ec9415f20] w:3888 h:2592 pixfmt:yuvj420p tb:1/1000000 sar:72/72 sws_param: [libx264 @ 0x7f8ec981d800] using SAR=1/1 [libx264 @ 0x7f8ec981d800] frame MB size (243x162) > level limit (36864) [libx264 @ 0x7f8ec981d800] MB rate (984150) > level limit (983040) [libx264 @ 0x7f8ec981d800] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0x7f8ec981d800] profile High, level 5.1 [libx264 @ 0x7f8ec981d800] 264 - core 120 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'timelapse4.mp4': Metadata: encoder : Lavf53.31.100 Stream #0:0: Video: h264 (![0][0][0] / 0x0021), yuvj420p, 3888x2592 [SAR 72:72 DAR 3:2], q=-1--1, 25 tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (mjpeg -> libx264) Press [q] to stop, [?] for help frame= 172 fps= 18 q=-1.0 Lsize= 259kB time=00:00:06.80 bitrate= 312.3kbits/s video:256kB audio:0kB global headers:0kB muxing overhead 1.089647% [libx264 @ 0x7f8ec981d800] frame I:1 Avg QP: 9.60 size:212820 [libx264 @ 0x7f8ec981d800] frame P:43 Avg QP:30.50 size: 291 [libx264 @ 0x7f8ec981d800] frame B:128 Avg QP:31.00 size: 285 [libx264 @ 0x7f8ec981d800] consecutive B-frames: 0.6% 0.0% 1.7% 97.7% [libx264 @ 0x7f8ec981d800] mb I I16..4: 22.5% 77.2% 0.3% [libx264 @ 0x7f8ec981d800] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:100.0% [libx264 @ 0x7f8ec981d800] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0% 0.0% direct: 0.0% skip:100.0% L0: 1.2% L1:98.8% BI: 0.0% [libx264 @ 0x7f8ec981d800] 8x8 transform intra:77.2% inter:100.0% [libx264 @ 0x7f8ec981d800] coded y,uvDC,uvAC intra: 41.2% 23.4% 0.6% inter: 0.0% 0.0% 0.0% [libx264 @ 0x7f8ec981d800] i16 v,h,dc,p: 40% 25% 35% 1% [libx264 @ 0x7f8ec981d800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 32% 30% 1% 0% 0% 0% 0% 0% [libx264 @ 0x7f8ec981d800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 51% 40% 6% 1% 1% 0% 1% 0% 1% [libx264 @ 0x7f8ec981d800] i8c dc,h,v,p: 60% 21% 19% 0% [libx264 @ 0x7f8ec981d800] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 0x7f8ec981d800] ref P L0: 92.3% 0.0% 0.0% 7.7% [libx264 @ 0x7f8ec981d800] ref B L0: 50.0% 0.0% 50.0% [libx264 @ 0x7f8ec981d800] ref B L1: 99.4% 0.6% [libx264 @ 0x7f8ec981d800] kb/s:304.49 Output timelapse4.mp4 (beacause of spam protection I can only post two links with my reputation): http sdm-net.org/data/timelapse4.mp4

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• Windows 2008 R2 RDS - Double Login

  - by colo_joe

  Issue: Double logins when connecting to RemoteApps or Remote Desktop Environment: Gateway = 1 server 2008 R2 - Roles = Gateway, Session Broker, Connection Mgr, Session Host Configuration server Session hosts = 2 servers 2008 R2 - Roles = App Manager and Session host configuration Testing: I can get to the url http://RDS.domain.com/rdweb - I get prompted for authentication (1) Pass authentication, get list of remote apps. Click on remoteapps or remote desktop, get prompted for authentication again (2). Pass authentication, I get access to app or RDP. Done so far. On session host Signed rdp files with cert. Added the following to the custom RDP settings: Authenticaton level:i:0 = If server authentication fails, connect to the computer without warning (Connect and don’t warn me). prompt for credentials on client:i:1 = RDC will prompt for credentials when connecting to a server that does not support server authentication. enablecredsspsupport:i:1 = RDP will use CredSSP, if the operating system supports CredSSP. Edited the javascript file as found in http://support.microsoft.com/kb/977507 Added Connection ID, and added Web Access server to TS Web Access Computers group on the Session host servers, and Signed apps as found in hxxp://blogs.msdn.com/b/rds/archive/2009/08/11/introducing-web-single-sign-on-for-remoteapp-and-desktop-connections.aspx Note: This double login happens internally and externally.

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• Apache inflate application/ with mod_filter

  - by BGT

  I need to prevent pdf objects from being gzipped. Really, this only needs to take place if the request is from the Mozilla browser (but since I can't get something as seemingly simple as no-gzip for application/pdf, I figure it's wiser to start there). From looking at the apache documentation on mod_filter, I've got the following: <Location /> FilterDeclare gzipDeflate CONTENT_SET FilterDeclare gzipInflate CONTENT_SET FilterProvider gzipDeflate deflate req=User-Agent $Mozilla/ FilterProvider gzipInflate inflate resp=Content-Type $application/ FilterChain +gzipDeflate +gzipInflate </Location> From my testing, the gzipDeflate filter is doing its job and all the pages without the Content-Type starting with application are being gzipped. But, the gzipInflate doesn't seem to be working at all. I've inspected the response in Firebug and verified that the Content-Type being sent down is application/pdf. I'll go ahead and ask a potentially stupid question though: The response's Content-Type header in its entirety read "application/pdf; charset=Windows-1252". Does that make any sort of difference or is $application/ presumably enough to catch that? Any help is greatly appreciated. One other point, the URL that returns the pdf object does not have the .pdf extension. The pdf itself is stored in an Oracle database as a blob and appended to the page when appropriate (all the urls in the system use the same baseline). This was part of an original inquiry by a helpful member at stackoverflow who pointed me towards mod_filter and suggested I post the question here.

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• How do you make Google's interface always be in your chosen language?

  - by Michael Wolf

  Google's interface and search results don't always appear in my preferred language, English. I'm located in Mexico City and, although I generally have no problem with Spanish, I would prefer search results in English most of the time. (The exception is when I'm using search terms in Spanish.) I'd also prefer the interface to be in English, but that's far less important to me than search results. Google looks at your IP to decide where you're coming from and thus what language to present results in. So, when I type www.google.com into the URL bar, it redirects me to www.google.com.mx. Is there a way to force Google to use one language all the time? Here are some things I've done and tried: 0) I have a Google account, and I've configured it such that it should know that English is my preferred language. I don't often explicitly log out of Google, so generally Google knows I'm me and my preferences when I access its services. 1) I've configured my browser to ask for pages in English. Very few sites support this feature at all; Google isn't one of them. 2) From www.google.com.mx, I can click on "Google.com in English". This works until, I think, I close the browser. 2a) From www.google.com.mx, I can go into account configuration, which is English. From then on, everything's in English. 3) I can append &hl=en (Human Language = English) to the end of the URLs of result pages. 2, 2a, and 3 all "work", but they're all mildly annoying. I'd rather avoid them if I could. (At the risk of stating the obvious, English and Spanish are the languages I'm dealing with, but I imagine that, say, a francophone using Google from Korea would run into basically the same issue.)

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• Multiple munin-nodes per machine

  - by Alexander T

  I'm collecting statistics remotely through JMX. The munin JMX plugin allows you to select an URL to connect to when aggregating statistics. This allows me to collect statistics from hosts which do not actually have munin-node installed. I find this a desirable property for some systems where I am hindered to install munin-node. How I work today is that if i want to collect JMX stats from machine A without munin-node, I install munin-node on machine B. Machine B then collects data from A via JMX, and reports it to munin-server, which runs on machine C. This setup requires multiple B-type machines: one per C-type machine. I would like to avoid this and instead use only one B-type machine to collect the data from all A-type machines and reports it to the only munin-server (C-type machine). As far as I understand this requires running multiple munin-nodes on B or in some other way report to munin-server that the B-type machine is reporting data from multiple sources. Is this possible? Thank you.

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• How to download Vim script on the command-line?

  - by HaiYuan Zhang

  Whenever I want to install a new Vim script on the Linux server I'm working on, my typical workflow is as the following: surf the plugin's homepage in Vim online using FireXXXX download a right version of the plugin to my laptop by click some highlighted link upload the downloaded plugin from my laptop to Linux server using WinSCP which is really inconvenient. I don't know what is the magic behind this: I mean for the same hyperlink I click it in web browser. I can let you download it but use Wget plus the hyperlink in Linux command-line will end up with nothing but an error indication. Hyperlink in the web browser. Otherwise I can get the link in web browser and then use Wget or some similar tool to actually do the downloding. I try new cool Vim scripts quite ofte , so you can imagine my dismay when I have to repeat the tedious action all the time. What are some tips which can let me download the Vim scripts in a more "professional" way? Post edit: My problem is not find a tool like Wget or cURL. The problem I met is quite specific; to use these tools to download a Vim script. Let's take http://www.vim.org/scripts/script.php?script_id=30 as an example. It's the normal place where one can get the script, at least for me. But I can't find an working URL from this page that can feed to Wget.

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• Varnish with multiple sites/boxes

  - by jerhinesmith

  Is it possible for Varnish to redirect traffic to different IPs based on the url? For example, is the following setup feasible (and if so, what would the VCL look like): *.example.com points to Varnish IP address When a request is made to foo.example.com, varnish checks the cache and sends the request to Server1's IP address on a cache miss. When a request is made to bar.example.com, varnish checks the cache and sends the request to Server2's IP address on a cache miss. foo and bar are (for the most part) completely unrelated sites. They use the engine, but have different content and their own distinct database. Since there previously was no penalty for doing so (other than cost) we split them up into two separate boxes so that a ton of traffic to foo won't have a negative impact on visitors browsing around bar. I could set up two instances of varnish and have one serve up foo's static content and the other serve up bar's, but as there doesn't seem to be much overhead to running Varnish, I think (perhaps mistakenly) that it would make more sense to go with one Varnish server that redirects the traffic to the appropriate box on a cache miss.

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• ESXi 5 VM Putty session hangs, vSphere client timing out

  - by user192702

  First of all I believe this is a ESXi issue but let me know if you have seen this. It started about a year ago when I noticed occasionally when I putty via SSH to my VM guests, if I do anything that makes it to display a lot of things at once, the session will hang and I have to start a new one quite often only to find the same behaviour. What I meant by display a lot of things can be any of the following: 1) tail -f filename 2) Paste a long command 3) less filename If I type in one character at a time this won't happen. I tried searching online and it always point me to flow control settings and the various suggestions I've tried have never been able to resolve the issue. Since last week, I've noticed I'm not able to connect to my POP3 server from Outlook (it's timing out from Outlook's perspective). Today I tried to connect to the ESXi via vSphere client and it gives me a time out also. Exact behavior and error I saw is similar to the one posted at the following URL but the suggested technique also failed to resolve the issue. http://davidcocke.blogspot.hk/2012/02/unable-to-login-with-vsphere-client.html Has anyone experienced this before? Any suggestions on how to troubleshoot this?

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• Get Safari to use different autocompletion on different URLs on same hostname

  - by Luke404

  I have a webserver publishing different services over the same SSL VirtualHost, the two most commonly used being PhpMyAdmin and Cacti. These (and others) use 'cookie' style authentication, asking user and password in an HTML form (thus not using HTTP Authentication). Being on the same hostname, the Safari browser didn't manage too well stored passwords: if I login to one app with user foo, and then go to app two it would propose me user foo and its password in the login form. Changing just the username to bar used to be sufficient to let Safari autocomplete the correct password in its form field. Annoying, but I could live with it - usernames are short and easy to remember when compared to the passwords we use. After the update to safari5 this seems to be no longer true: if I store in safari (actually user keychain on OSX) credentials for https://www.foobarbaz.com/app1 AND credentials for https://www.foobarbaz.com/app2 there seem to be no way for it to autocomplete both based on the url. Even editing the keychain to add the path (it will store only the hostname by default) does not help. Is there anything I can do to let it work the way I want while still keeping everything on one hostname? Modifying anything server side is of course possible, but I can't switch apps to HTTP Auth (and not every one will support it anyway) to use different 'realms'.

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• Extract Distinct restful MVC routes from IIS logs

  - by Grummle

  This is a cross post from StackOverflow that after some consideration I believe can be asked here (not getting anything on SO). My shop is using MVC3/FUBU on IIS 7. I recently put something into production and I wanted to gather metrics from the IIS logs using log parser. I've done this many times before with file endpoints but because the MVC3 routes are of the form /api/person/{personid}/address/{addressid} the log saves /api/person/123/address/456 in the uristem column. Does anyone have any ideas on how to get data about specific routes from IIS logs? As an exmaple: Log Like this: cs-uri-stem /api/person/123/address/456 /api/person/121/address/33 /api/person/3555 /api/person/1555/address/5555 I want information about all where the route used was /api/person/{personid} so the count would be 1 in this case. Ideally what I'd like to figure out is how to do is is have IIS log the regex for the route that is choose for a particular url. So in the IIS logs have /api/person/{personid}/address/{addressid} in a column in addition to the cs-uristem /api/person/1555/address/5555

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• plesk: how to configure reverse proxy rules properly?

  - by rvdb

  I'm trying to configure reverse proxy rules in vhost.conf. I have Apache-2.2.8 on Ubuntu-8.04, monitored by Plesk-10.4.4. What I'm trying to achieve is defining a reverse proxy rule that defers all traffic to -say- http://mydomain/tomcat/ to the Tomcat server running on port 8080. I have mod_rewrite and mod_proxy loaded in Apache. As far as I understand mod_proxy docs, entering following rules in /var/www/vhosts/mydomain/conf/vhost.conf should work: <Proxy *> Order deny,allow Allow from all </Proxy> ProxyRequests off RewriteRule ^/tomcat/(.*)$ http://mydomain:8080/$1 [P] Yet, I am getting a HTTP 500: internal server error when requesting above URL. (Note: I decided to use a rewrite rule in order to at least get some information logged.) I have made mod_rewrite log extensively, and find following entries in the logs [note: due to a limitation of max. 2 URLs in posts of new users, I have modified all following URLs so that they only contain 1 slash after http:. In case you're suspecting typos: this was done on purpose): 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (2) init rewrite engine with requested uri /tomcat/testApp/ 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (3) applying pattern '^/tomcat/(.*)$' to uri '/tomcat/testApp/' 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (2) rewrite '/tomcat/testApp/' - 'http:/mydomain:8080/testApp/' 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (2) forcing proxy-throughput with http:/mydomain:8080/testApp/ 81.241.230.23 - - [19/Mar/2012:16:42:59 +0100] [mydomain/sid#b06ab8][rid#1024af8/initial] (1) go-ahead with proxy request proxy:http:/mydomain:8080/testApp/ [OK] This suggests that the rewrite and proxy part is processed ok; still the proxied request produces a 500 error. Yet: Addressing the testApp directly via http:/mydomain:8080/testApp does work. The same setup does work on my local computer. Is there something else (Plesk-related, perhaps?) I should configure? Many thanks for any pointers! Ron

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• How to pin "Visual Studio 2010 Documentation" shortcut to Windows 7 taskbar?

  - by Chris W. Rea

  I just installed Microsoft Visual Studio 2010 at home, on my Windows 7 PC. One of the items installed with VS2010 is "Microsoft Visual Studio 2010 Documentation". I like to have the documentation installed locally and at my fingertips, and so before had always added a shortcut for the help viewer to my Quick Launch toolbar. However, I'm not able to pin the new documentation to the Windows 7 taskbar. It's frustrating. Note carefully: When I launch "Microsoft Visual Studio 2010 Documentation" from the Start menu, it seems to perform two functions: First, it launches the "Help Library Agent", which is a local HTTP server from which the help content is served... similar to the local ASP.NET web development server. Second, it launches the default web browser against the localhost URL corresponding to the port on which the "Help Library Agent" is running, for example: http://127.0.0.1:47873/help/1-1444/ms.help?method=f1&query=msdnstart&product=VS&productVersion=100&locale=en-US ... in other words, the program doesn't leave behind an active foreground process that displays in the taskbar. So, I can't choose "Pin this program to taskbar" as one might do so with a typical program. How can I get a shortcut to "Microsoft Visual Studio 2010 Documentation" in the Windows 7 taskbar? Has anybody got a workaround for this?

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• Server Recovery from Denial of Service

  - by JMC

  I'm looking at a server that might be misconfigured to handle Denial of Service. The database was knocked offline after the attack, and was unable to restart itself after it failed to restart when the attack subsided. Details of the Attack: The Attacker either intentionally or unintentionally sent 1000's of search queries using the applications search query url within a couple of seconds. It looks like the server was overwhelmed and it caused the database to log this message: Server Specs: 1.5GB of dedicated memory Are there any obvious mis-configurations here that I'm missing? **mysql.log** 121118 20:28:54 mysqld_safe Number of processes running now: 0 121118 20:28:54 mysqld_safe mysqld restarted 121118 20:28:55 [Warning] option 'slow_query_log': boolean value '/var/log/mysqld.slow.log' wasn't recognized. Set to OFF. 121118 20:28:55 [Note] Plugin 'FEDERATED' is disabled. 121118 20:28:55 InnoDB: The InnoDB memory heap is disabled 121118 20:28:55 InnoDB: Mutexes and rw_locks use GCC atomic builtins 121118 20:28:55 InnoDB: Compressed tables use zlib 1.2.3 121118 20:28:55 InnoDB: Using Linux native AIO 121118 20:28:55 InnoDB: Initializing buffer pool, size = 512.0M InnoDB: mmap(549453824 bytes) failed; errno 12 121118 20:28:55 InnoDB: Completed initialization of buffer pool 121118 20:28:55 InnoDB: Fatal error: cannot allocate memory for the buffer pool 121118 20:28:55 [ERROR] Plugin 'InnoDB' init function returned error. 121118 20:28:55 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 121118 20:28:55 [ERROR] Unknown/unsupported storage engine: InnoDB 121118 20:28:55 [ERROR] Aborting **ulimit -a** core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 13089 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 1024 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited **httpd.conf** StartServers 10 MinSpareServers 8 MaxSpareServers 12 ServerLimit 256 MaxClients 256 MaxRequestsPerChild 4000 **my.cnf** innodb_buffer_pool_size=512M # Increase Innodb Thread Concurrency = 2 * [numberofCPUs] + 2 innodb_thread_concurrency=4 # Set Table Cache table_cache=512 # Set Query Cache_Size query_cache_size=64M query_cache_limit=2M # A sort buffer is used for optimizing sorting sort_buffer_size=8M # Log slow queries slow_query_log=/var/log/mysqld.slow.log long_query_time=2 #performance_tweak join_buffer_size=2M **php.ini** memory_limit = 128M post_max_size = 8M

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• How to increase the speed between two external hard drives on my laptop?

  - by Roman

  Hello, I own Sony Vaio Z laptop with two external USB ports. It's quite new and has USB 2.0 support. I'm using Vista x64 on it. I also have two external usb hard drives, Iomega 500GB and WD for 1TB. Every hard drive has USB 2.0 support. I connect two devices to my laptop and trying to copy date from one hard drive to another. But it takes a lot of time! The speed is about 15 Megabytes per second. I have to wait toooooo long to copy all the information from one hard drive to another. When I try to copy information from my internal (SSD) hard drive, it works fine for both external drives. The speed is very high and it shows me something about 100 Megabytes per second. It makes me feel that USB 2.0 is OK on both drives. But when I'm trying to copy from one external drive to another external, I still get very low speed. I checked out Device Manager and here is the settings I have: (sorry, can't upload image because of my rating, check this url: http://picbite.com/image/122073daljo/ ) I think it's because two of my external drives use the same USB 2.0 controller. Is there any way to make it work faster? Is it possible to move one of my USB ports to other USB 2.0 controller? Or is there any software which can help me to automate copying all the files thru my internal drive? I have only about 3 gigabytes free space on internal drive and it's quite difficult to move manually every file from one hard drive to internal and then again to another internal.

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• How to increase the speed between two external hard drives on my laptop?

  - by Roman

  Hello, I own Sony Vaio Z laptop with two external USB ports. It's quite new and has USB 2.0 support. I'm using Vista x64 on it. I also have two external usb hard drives, Iomega 500GB and WD for 1TB. Every hard drive has USB 2.0 support. I connect two devices to my laptop and trying to copy date from one hard drive to another. But it takes a lot of time! The speed is about 15 Megabytes per second. I have to wait toooooo long to copy all the information from one hard drive to another. When I try to copy information from my internal (SSD) hard drive, it works fine for both external drives. The speed is very high and it shows me something about 100 Megabytes per second. It makes me feel that USB 2.0 is OK on both drives. But when I'm trying to copy from one external drive to another external, I still get very low speed. I checked out Device Manager and here is the settings I have: (sorry, can't upload image because of my rating, check this url: http://picbite.com/image/122073daljo/ ) I think it's because two of my external drives use the same USB 2.0 controller. Is there any way to make it work faster? Is it possible to move one of my USB ports to other USB 2.0 controller? Or is there any software which can help me to automate copying all the files thru my internal drive? I have only about 3 gigabytes free space on internal drive and it's quite difficult to move manually every file from one hard drive to internal and then again to another internal.

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• "one-off" use of http_proxy in a Chef remote_file resource

  - by user169200

  I have a use case where most of my remote_file resources and yum resources download files directly from an internal server. However, there is a need to download one or two files with remote_file that is outside our firewall and which must go through a HTTP proxy. If I set the http_proxy setting in /etc/chef/client.rb, it adversely affects the recipe's ability to download yum and other files from internal resources. Is there a way to have a remote_file resource download a remote URL through a proxy without setting the http_proxy value in /etc/chef/client.rb? In my sample code, below, I'm downloading a redmine bundle from rubyforge.org, which requires my servers to go through a corporate proxy. I came up with a ruby_block before and after the remote_file resource that sets the http_proxy and "unsets" it. I'm looking for a cleaner way to do this. ruby_block "setenv-http_proxy" do block do Chef::Config.http_proxy = node['redmine']['http_proxy'] ENV['http_proxy'] = node['redmine']['http_proxy'] ENV['HTTP_PROXY'] = node['redmine']['http_proxy'] end action node['redmine']['rubyforge_use_proxy'] ? :create : :nothing notifies :create_if_missing, "remote_file[redmine-bundle.zip]", :immediately end remote_file "redmine-bundle.zip" do path "#{Dir.tmpdir}/redmine-#{attrs['version']}-bundle.zip" source attrs['download_url'] mode "0644" action :create_if_missing notifies :decompress, "zipp[redmine-bundle.zip]", :immediately notifies :create, "ruby_block[unsetenv-http_proxy]", :immediately end ruby_block "unsetenv-http_proxy" do block do Chef::Config.http_proxy = nil ENV['http_proxy'] = nil ENV['HTTP_PROXY'] = nil end action node['redmine']['rubyforge_use_proxy'] ? :create : :nothing end

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• Files deleted. What could have happened?

  - by jjfine

  I'm having a weird issue today. I was writing and testing out some simple cgi scripts this morning when I realized that I couldn't run them from one of the other computers on the (windows) network. So I had my network admin come in and take a look at what was going on. A few minutes later a co-worker came in and told me that a bunch of files he was working with as well as a bunch of others (all *.c files) on the network drive got deleted. He also noticed some strange apache_dump_500.log.txt files in the same directories where the files got deleted. The apache_dump_500.log.txt files all look like this: REDIRECT_HTTP_ACCEPT=*/*, image/gif, image/x-xbitmap, image/jpeg REDIRECT_HTTP_USER_AGENT=Mozilla/1.1b2 (X11; I; HP-UX A.09.05 9000/712) REDIRECT_PATH=.:/bin:/usr/local/bin:/etc REDIRECT_QUERY_STRING= REDIRECT_REMOTE_ADDR=<my computer's local ip> REDIRECT_REMOTE_HOST= REDIRECT_SERVER_NAME=<my computer's domain url> REDIRECT_SERVER_PORT= REDIRECT_SERVER_SOFTWARE= REDIRECT_URL=/cgi-bin/trojan.py I looked and I don't have any trojan.py in my cgi-bin folder. And all my apache logs are clean. Windows event logger seems to not have any traces of what happened either. My httpd.conf: http://pastebin.com/Yny2Yh8v I think we've got some kind of virus that added this trojan.py file to my cgi-bin, ran the script, and deleted the script and any traces from the logs. Is this a thing that happens? Any ideas whatsoever would be much appreciated!

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• How to host multiple FLEX applications in IIS7

  - by Devtron

  Hello, I manually deploy a FLEX application to my web server (IIS 7). There are two virtual directories, 1.) Default 2.) myFlexApp1. myFlexApp1 is where my working FLEX application resides. I now need to deploy a different FLEX application (let's call it myFlexApp2) to the same web server. I set up a virtual directory for [myFlexApp2] and it complains about the "bindings" using port 80, which is already used by [myFlexApp1]. I have tried to give them separate host names in their bindings properties. For example, myFlexApp1.mydomain.com and myFlexApp2.mydomain.com. I can never get [myFlexApp2] to show from an external browser. I was able to get only one or the other to display, but never could run both. Here is what I need: myFlexApp1.mydomain.com -- myFlexApp1 calendar.mydomain.com -- myFlexApp2 test.mydomain.com -- myFlexApp1 where test.mydomain.com is the default URL. Is this possible? What am I doing wrong? I even tried to edit the hosts file in [C:\Windows\System32\drivers\etc] but that didnt work either. How can I serve up two FLEX applications on IIS 7? It shouldn't be this hard!

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• Protect all XML-RPC calls with HTTP basic auth but one

  - by bodom_lx

  I set up a Django project for smartphone serving XML-RPC methods over HTTPS and using basic auth. All XML-RPC methods require username and password. I would like to implement a XML-RPC method to provide registration to the system. Obviously, this method should not require username and password. The following is the Apache conf section responsible for basic auth: <Location /RPC2> AuthType Basic AuthName "Login Required" Require valid-user AuthBasicProvider wsgi WSGIAuthUserScript /path/to/auth.wsgi </Location> This is my auth.wsgi: import os import sys sys.stdout = sys.stderr sys.path.append('/path/to/project') os.environ['DJANGO_SETTINGS_MODULE'] = 'project.settings' from django.contrib.auth.models import User from django import db def check_password(environ, user, password): """ Authenticates apache/mod_wsgi against Django's auth database. """ db.reset_queries() kwargs = {'username': user, 'is_active': True} try: # checks that the username is valid try: user = User.objects.get(**kwargs) except User.DoesNotExist: return None # verifies that the password is valid for the user if user.check_password(password): return True else: return False finally: db.connection.close() There are two dirty ways to achieve my aim with current situation: Have a dummy username/password to be used when trying to register to the system Have a separate Django/XML-RPC application on another URL (ie: /register) that is not protected by basic auth Both of them are very ugly, as I would also like to define a standard protocol to be used for services like mine (it's an open Dynamic Ridesharing Architecture) Is there a way to unprotect a single XML-RPC call (ie. a defined POST request) even if all XML-RPC calls over /RPC2 are protected?

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