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• Upgraded to Ubuntu 12.04 from 10.04 and have to transfer database from Postgresql 8.4 to 9.1

  - by Stpn

  I upgraded server with a Rails application to Ubuntu 12.04 from 10.04 and cannot connect to Postgresql database now... Here is the error message from Rails app: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432" Also the pg_ctl start is not recognized as a command.. EDIT: Turns out my database in on Postgresl 8.4 and my sever is now running on 9.1. So all the database files / configs are on 8.4.. How can I transfer them? Just straight copy from old pg_hba.conf?

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• How to get http requests details in a tcpdump?

  - by tucson

  I am trying to get a tcpdump trace of some http requests. Here is what I got so far (I replaced the real IP addresses with REMOTE and LOCAL): C:\>Windump -na -i 3 ip host REMOTE and ip src LOCAL and tcp port 80 Windump: listening on \Device\NPF_{8056BE5E-BDBB-44E6-B492-9274B410AD66} 13:13:34.985460 IP LOCAL.4261 > REMOTE.80: . 1784894764:1784894765(1) ack 1268208398 win 65535 13:13:38.589175 IP LOCAL.4302 > REMOTE.80: F 3708464308:3708464308(0) ack 982485614 win 65535 13:13:38.589285 IP LOCAL.4303 > REMOTE.80: F 890175362:890175362(0) ack 2462862919 win 65535 13:13:38.589330 IP LOCAL.4304 > REMOTE.80: F 1838079178:1838079178(0) ack 156173959 win 65535 13:13:38.589374 IP LOCAL.4305 > REMOTE.80: F 3952718843:3952718843(0) ack 2209231545 win 65535 13:13:38.589413 IP LOCAL.4306 > REMOTE.80: F 446105750:446105750(0) ack 3141849979 win 65535 13:13:38.590265 IP LOCAL.4302 > REMOTE.80: . ack 2 win 65535 13:13:38.590403 IP LOCAL.4304 > REMOTE.80: . ack 2 win 65535 13:13:38.590429 IP LOCAL.4303 > REMOTE.80: . ack 2 win 65535 13:13:38.590484 IP LOCAL.4305 > REMOTE.80: . ack 2 win 65535 13:13:38.590514 IP LOCAL.4306 > REMOTE.80: . ack 2 win 65535 But I do not get the following level of details: Request URL:http://domain.com/index.php Request Method:POST Status Code:200 OK POST /index.php HTTP/1.1 Host: domain.com Connection: keep-alive Content-Length: 151 Cache-Control: max-age=0 etc How can I get this level of data?

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• Virtual Network Printer

  - by user113720

  I'm pretty new to Microsoft Servers so don't blame me if the question isn't that smart [I'm a Unix guy]. I need to install a Virtual Printer of a Microsoft Server 2008 r2. The requirements are: The printer must print on a file {whatever file... txt or pdf } The printer must run on a server The printer must accept plaintext from a specific IP:port The connection between the device that prints and the server is a local network I've tried to install a virtual printer, but I cannot specify the constraint about the socket from which receive data to print. Thank you so much

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• How to I configure open_basedir parameter under my Centos VPS?

  - by deltanovember

  The parameter can be seen here http://wordswithfriends.net/test.php open_basedir /var/www/vhosts/wor.wordswithfriends.net/wordswithfriends.net/:/tmp I'm trying to add PHP pear directories /var/www/vhosts/wor.wordswithfriends.net/conf is as follows -rw-r----- 1 root apache 6461 Jan 25 08:56 12959674170.16899500_httpd.include -rw-r----- 1 root apache 6461 Jan 31 06:52 12960111810.31860800_httpd.include -rw-r----- 1 root apache 6532 Jan 31 06:55 12964785250.54523600_httpd.include -rw-r----- 1 root apache 6532 Jan 31 07:01 12964788880.47252600_httpd.include -rw-r----- 1 root apache 6532 Jan 31 15:54 12965108850.92819600_httpd.include -rw-r----- 1 root apache 6652 Jan 31 21:32 12965206700.32285200_httpd.include Currently configured as follows grep base 12965206700.32285200_httpd.include php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ php_admin_value open_basedir /var/www/vhosts/wor.wordswithfriends.net/httpdocs/:/tmp/:/usr/share/pear/:/local/PEAR/ Configured vhost.conf as follows <Directory /var/www/vhosts/wor.wordswithfriends.net/wordswithfriends.net> <IfModule sapi_apache2.c> php_admin_flag engine on php_admin_flag safe_mode off php_admin_value open_basedir "/var/www/vhosts/wor.wordswithfriends.net:/tmp:/usr/share/pear/local/PEAR" </IfModule> <IfModule mod_php5.c> php_admin_flag engine on php_admin_flag safe_mode off php_admin_value open_basedir "/var/www/vhosts/wor.wordswithfriends.net:/tmp:/usr/share/pear:/local/PEAR" </IfModule> </Directory> Restarted apache and the parameter is still the same. I'm not sure why my pear directories are not showing up. I'm using Plesk. Any help appreciated

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• Windows 8 using as a webserver

  - by Jason

  I have a few hobby websites that I currently host on CentOS 6. Apache, mail serving, PHP, MySQL nothing special. In the past I used Windows XP to do this same task, for years, and I was OK. I switched to Linux and for the last few years it has been such a pain. updates break, certain apps only support certain distros without compiling from source. It prevents me from working on my hobby sites more because I am always fixing something. With Windows I locked it down, I run a hardware firewall and packet analyser, kept up on updates and A/V and never had a problem. I dont allow RDC from outside the local LAN, no FTP open, run OpenSSH on an obscure port.. I am considering switching to Windows 8 (since it is a cheaper license now that Windows 7) and running apache, HMailServer, PHP, MySQL, just like my CentOS install. My questions: I am not familiar with Windows 8, can the above be done like XP? No new security restrictions or the OS preventing this from happening? The machine is a Athlon 64-bit X2 with 32GB of RAM. Will Windows 8 see all of the RAM? Technically the machine came with Windows 7, and there is a serial number on it but I am sure I wiped away the Windows 7 recovery partition when I switched to Linux....

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• setting up a private network using linksys router

  - by user287745

  scenerio:- a database server running sql server 2005 and sql server management studio 2005 express editions a web server running IIS 5.0v using windows xp pro. two other computer having windows xp and windows 98 i have a linksys router which i use to access point for wireless (laptop) there are 5 sockets behind it four for clients and one for internet. i would like to setup a LAN- something like a private hosting area with two clients. would should i do? where to connect what and what would the changes in settnigs be. right now it uses dhcp or something to assign ips. where will the webserver be attached to the internet socket? where will the db server be attached? any guide, links, help thank you

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• "What happens?" server performance monitor

  - by AlexAtNet

  Hello! After reviewing some thread about server monitoring software I end up with a simple question: Which of the server monitoring tools should I use for automatic detection of "abnormal" situations with recommendations on how to fix them? I look for software that checks the system performance after installation and calculate some average load values (memory, CPU, etc). And when something happens (CPU load is increased to 20%) then it tries to detect a reason for this. If it is apache, it should check for access logs. If mysql, it should check mysql logs and tell me what happens. It this is because some user decodes a lot of images, I'd like to know which command is executed, when and user name. The same for disk usage, memory, number of processes, threads and so on. Ideally, this software should periodically checks the system and report problems: errors in PHP error log, outdated packages, security vulnerabilities. In other word I'm looking a software that will keep my simple Debian/Apache/PHP/MySQL server without forcing me to monitor the charts every day. I hope that such program exists. Thanks, Alex

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• uWSGI and python virtual env

  - by user27512

  I'm trying to use uWSGI with a virtual env in order to use the Trac bug tracker on it. I've installed system-wide uwsgi via pip. Next, I've installed trac in a virtualenv $ virtualenv venv $ . venv/bin/activate $ pip install trac I've then written a simple uWSGI configuration script: [uwsgi] master = true processes = 1 socket = localhost:3032 home = /srv/http/trac/venv/ no-site = true gid = www-data uid = www-data env = TRAC_ENV=/srv/http/trac/projects/my_project module = trac.web.main:dispatch_request But when I try to launch it, it fails: $ uwsgi --http :8000 --ini /etc/uwsgi/vassals-available/my_project.ini --gid www-data --uid www-data ... Set PythonHome to /srv/http/trac/venv/ ... *** Operational MODE: single process *** ImportError: No module named trac.web.main unable to load app 0 (mountpoint='') (callable not found or import error) I think uWSGI isn't using the virtual env. When inside the virtual env, I can import trac.web.main without having an ImportError. How can I do that ? Thanks

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• Testing performance from around the world - how do I get a linux shell easily in multiple countries?

  - by Matthew O'Riordan

  We are building a socket based service where latency is paramount, and as such we have servers distributed into 7 data centres around the world. However, whilst we know we're bringing the servers closer to the clients, it's very difficult to know how effective this is, and importantly, what difference this makes compared to our competitors. As such, we want to run simple scripts that test latency and throughput for both our service and our competitors, which is easy enough using Amazon, however Amazon only have 7 data centres. We would like to know for example how we perform in locations all over the world such as South Africa, Australia, China, Peru etc. Does anyone know of any service where we could piggy back off their global infrastructure and run some scripts to test this performance? The obvious contenders are people like Monitis, but I don't think they would allow us to run custom scripts, only standard protocol monitors. Thanks for your help. Matt

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• Thin web server - single or multiple instances per IP address:port?

  - by wchrisjohnson

  I'm deploying a rack/sinatra/web socket app onto several servers and will use thin as the web server (http://code.macournoyer.com/thin/). There are almost no views to show, so I am not front-ending it with a traditional web server like Apache or nginx. In general, you see thin started and the underlying config file for it has the number of server instances to start, say 3, and the port to start with, say 5000. So, in my example, when thin starts, it starts up three instances on a range of ports, starting on port 5000. If I have a series of virtual machines, say 3, 6, 9, etc. that I treat as a cluster, would/should I choose to start a single thin instance on each VM, or multiple instances on each VM? Why? Thanks - Chris

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• Suspected power supply issue? PC repeatedly whirs for some seconds and then dies.

  - by benwebdev

  I've come home today and switched on the PC I've built a few months ago only for the machine to whir for a few short seconds and then die. It repeats this until I disconnect the power lead. Nothing is output to the screen and this cut out happens very quickly after switching it on. What could this be and how could it be fixed? Is it the power supply? I'm in despair :-( My spec is below, everything is new and was bought and assembled within the last 6months, system has been fantastic until now. Power Supply: 620W CoolerMaster Real Power M620 Motherboard: Gigabyte GA-X58A-UD3R Intel X58 (Socket 1366) DDR3 Processor: Intel Core i7 930 2.80GHz @ 4.00GHz RAM: 6GB DDR3 OS Windows 7 64bit Sapphire HD 5770 Vapor-X 1GB Graphics card 1TB Hitachi HDD 720GB Seagate Barracuda HDD 350GB Seagate Barracuda HDD EMu 0404 PCI Soundcard D-Link PCI-E wireless card Samsung DVD RW drive

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• How to create persistent static route on Mac OS X 10.6?

  - by kopobamypa

  I need to add static route on Mac OS. I found good description here Permanent Static Route Mac OS X 10.4.0 and followed the Roark Holz's (roarkh) solution. Now my problem: sometimes this solution works, sometimes does not. When it doesn't work I see these messages after boot in the Console Messages log: 06.05.10 9:34:13 com.apple.launchd[1] *** launchd[1] has started up. *** 06.05.10 9:34:46 com.apple.SystemStarter[30] Adding Static Route to 10.152 06.05.10 9:34:46 com.apple.SystemStarter[30] route: writing to routing socket: Network is unreachable 06.05.10 9:34:46 com.apple.SystemStarter[30] add net 10.152.0.0: gateway 192.168.1.234: Network is unreachable I want to know what is going on. How this kind of problem can be troubleshooted?

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• optimize mod_rewrite in htaccess

  - by clarkk

  I got some mod_rewrite conditions in a .htaccess file which I have extended from time to time.. But I don't think its very well written (I'm still quite new to mod_rewrite) Some times requests end up in infinite loops And just now I added SSL to the file.. When requesting https:// I get a 404 error The requested URL /_secure/_secure/ was not found on this server. Somehow it adds an extra _secure to the path? .htacces # set language RewriteCond %{HTTP_HOST} ^www\. [NC] RewriteCond %{REQUEST_URI} ^/(da|en)/(.*)(\?%{QUERY_STRING})?$ [NC] RewriteRule ^(.*)$ /%2?%{QUERY_STRING}&set_lang=%1 [L] # put 'www' as subdomain if none is given RewriteCond %{HTTP_HOST} ^([^\.]+\.[^\.]+)$ [NC] RewriteRule ^(.*)$ http://www.%1/$1 [L,R=301] # rewrite subdomain RewriteCond %{HTTP_HOST} ^(admin|files)\.[^\.]+\.[^\.]+$ [NC] RewriteCond %{REQUEST_URI} !^/_(admin|files)/ [NC] RewriteRule ^(.*)$ /_%1/$1 [L] # redirect to subdomain RewriteCond %{HTTP_HOST} ^www\.([^\.]+\.[^\.]+)$ [NC] RewriteRule ^_([^/]+)/ http://$1.%1/ [L,R=301] # start SSL on 'secure' subdomain if not started RewriteCond %{HTTPS} !=on RewriteCond %{HTTP_HOST} ^(secure)\.([^\.]+\.[^\.]+)$ [NC] RewriteRule ^(.*)$ https://%1.%2/$1 [L,R=301] # rewrite 'secure' subdomain RewriteCond %{HTTP_HOST} ^(demo|secure)\.[^\.]+\.[^\.]+$ [NC] RewriteCond %{REQUEST_URI} !^/_secure/ [NC] RewriteRule ^(.*)$ /_secure/$1 [L] # rewrite 'api' subdomain RewriteCond %{HTTP_HOST} ^api\.[^\.]+\.[^\.]+$ [NC] RewriteCond %{REQUEST_URI} !^/_api/ [NC] RewriteRule ^(?:([^/]+)/)?(?:([^/]+)/)?(?:([^/]+)/)?(?:([^/]+)/)?(?:([^/]+)/)?(?:([^/]+)/)? /_api/?%{QUERY_STRING}&v=$1&i=$2&k=$3&a=$4&t=$5&f=$6 [L] # redirect non-active subdomain to 'www' RewriteCond %{HTTP_HOST} !^(admin|api|demo|files|secure|www)\.([^\.]+\.[^\.]+)$ [NC] RewriteRule ^(.*)$ http://www.domain.com [L,R=301] # hide file extensions RewriteCond %{HTTP_HOST} ^www\. [NC] RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !\.php$ [NC] RewriteCond %{REQUEST_URI} ^/([^/]*)/(?:([^/]*)/)?(?:([^/]*)/)?$ [NC] RewriteRule ^(.*)$ /%1.php?%{QUERY_STRING}&subpage=%2&subsection=%3 [L]

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• Unable to get to remote samba share

  - by tubaguy50035

  I have a remote VPS that I would like to setup samba on and only allow my IP access to it. I currently have in my smb.conf: [global] netbios name = apollo security = user encrypt passwords = true socket options = TCP_NODELAY printing = bsd log level = 3 log file = /var/log/samba/log/%m debug timestamp = yes max log size = 100 [hosting] path = /hosting/ comment = Hosting Folder browseable = yes read only = yes guest account = yes valid users = nick I have the ports (137,138,139,445) open in iptables (they're open to everyone right now while I debug) and I see nothing in the syslog about iptables blocking my requests. When I try to open a file browser to my address \\ipaddress, it hangs for a good thirty seconds, and then opens a log in box. I enter my user name and password for the server, hit okay. It then opens the same box, I enter my credentials again and hit enter. Windows then tells me it could not connect. My user account is added to Samba already. Anybody have any suggestions what I can do to get this working?

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• Unable to set initcwnd on a Hetzner server

  - by Sergi

  We just ordered a bunch of Hetzner EX40SSD servers with the minimal Debian install image that they provide and everything is just fine except that looking at tcpdumps for fine tuning the network from various locations the initcwnd param seems to be stuck at 6 no matter how we change it. By default Debian 3.2 kernels should have that setting to 10 so it's pretty strange. Is it possible that the NIC driver or a custom setting in the Hetzner Debian image is limiting this param? Even if we set it to 4, like the old kernel default, it doesn't work. Any ideas would be much appreciated! Does anyone know if the NIC drivers provided by default by Debian have some kind on limitation. In a long thread in http://www.webhostingtalk.com/showthread.php?t=1200617&highlight=hetzner they talk about a page http://wiki.hetzner.de/index.php/Installation_des_r8168-Treibers/en where Hetzner states that the included Realtek r8168 driver is not working properly, but nowhere do they say that the initcwnd could be affected. Tomorrow i will try to install a CentOs image and see if Debian is the problem...Last resort would be to install a custom debian image, but that is a pain in the ass! Thanks!

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• Having trouble with a workaround, for booting from a usb stick, using grub and a minimal linux kernel to load usb drivers

  - by s hanley

  I'm trying to boot from a usb stick. I formatted it to fat32, and later to ext2, and installed dsl on it using unetbootin, and later the usb install guide on dsl wiki (http://www.damnsmalllinux.org/wiki/index.php/Install_to_USB_From_within_Linux). The bios doesn't have a setting for booting from usb. Grub doesn't "see" the usb drive when I use the root and find commands, explained in (http://www.damnsmalllinux.org/wiki/index.php/USB_Booting). This happens even when I set boot from floppy at the top of the boot order. However, my usb keyboard is recognised by the bios and by grub. How can it recognise the keyboard but not the usb drive? Also, the usb led does flash even before grub starts up, so surely something must be happening usb-wise? I am now following an ubuntu guide to booting from a USB stick, using a hdd-based, minimal linux kernel to supply the usb drivers. But I'm having difficulty adapting it to other OSes (slax/dsl/aptosid). I believe I have to alter the initrd.gz file to include usb drivers and then copy that file along with vmlinuz to a partition on my hdd. But, what's the grub command for the kernel line supposed to look like? From the ubuntu example it's: title USB FLASH DRIVE root (hd0,6) kernel /boot/usb-boot/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper noprompt cdrom-detect/try-usb=true persistent initrd /boot/usb-boot/initrd.lz boot Should mine just be: title USB FLASH DRIVE root (hd0,6) kernel /boot/usb-boot/vmlinuz cdrom-detect/try-usb=true initrd /boot/usb-boot/initrd.lz boot

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• How to invoke a command using specific proxy server?

  - by Xiè Jìléi

  Some applications support proxy (http proxy or socks proxy), and some are not. For browsers, I can specify proxy server in the preferences/options dialog, and other applications may be able to configure proxy servers in config files. For general purpose, can I invoke a command using a specific proxy? Like following: $ proxy-exec --type sock5 --server 1.2.3.4:8000 -- wget/ftp ... I'm using Ubuntu Maverick. P.S. In win32, it can be implemented by hijacking the socket dlls, maybe, I'm not familiar with Linux programming, but I guess it's possible in Linux. though.

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• "System call failed" error when trying to open "My Computer" etc. under the Start menu! What is happening?

  - by verve

  When I go to the start menu I can load program icons but if I click on Documents, My Pictures, My Computer, Default Programs...all the options on the right part--I get "System call failed". How do I solve ths? Is my HD failing? Also, I don't know if it's connected but yesterday my uTorrent stopped working in a way it has never done before. I'm not able to download torrent files. In the program I get "socket unreacheable..." Also, for the last 2 days my internet has been super-slow. I checked Kaspersky for viruses. It says: "No active threats". Windows 7 64-bit.

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• fastcgi-mono-server with Nginx is much slower than xsp4

  - by marxin

  We started testing our MVC4 app on xsp4 server compiled with mono-3.0.3, speed was enough and we decided to set up production fastcgi-mono-server4 (version 2.11.0.0) with nginx (1.2.6-r1). Single query that loads some JSON query took ~200ms on XSP4, but Nginx serves the query in about 1.2s and I am wondering where could be such a slow down? I followed nginx configuration: http://www.mono-project.com/FastCGI_Nginx and fastcgi-mono-server4 uses socket for listening nginx. Do you have any ideas how to log some time stamp which will help me? Thanks

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• Can mod-rewrite be used to set environmental variables?

  - by VLostBoy

  Hi, I've got an existing simple rewrite rule like so: <Directory /path> RewriteEngine on RewriteBase / # if the requested resource does not exist RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # route the uri to a front controller RewriteRule ^(.*)$ index.php/$1 [L] </Directory> This works fine, but I want to do one of either two things. On the basis of detecting the clients accept-language header, I want to either (i) Set the detected language as an environmental variable that the script can use or (ii)Rewrite the request so that the url begins with the language code (e.g. www.example.com/en/some/resource) In terms of implementing (i), I defined this rule: <Directory /path> RewriteEngine on RewriteBase / # if the requested resource does not exist RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # if the users preferred language is supported... RewriteCond %{HTTP:Accept-Language} ^.*(de|es|fr|it|ja|ru|en).*$ [NC] # define an environmental variable PREFER_LANG RewriteRule ^(.*)$ - [env=PREFER_LANG:%1] # route the uri to a front controller RewriteRule ^(.*)$ index.php/$1 [L] </Directory> I've tried a few variations, but PREFER_LANG is not defined in $_SERVER nor retrievable by getenv. In terms of implementing (ii)... lets just say its messy. I'll post it if I can't get an answer to one. Can anyone advise me? Thanks!

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• How to locate phpmyadmin on ubuntu

  - by Chris

  Okay, I'm usually a windows user and I write quite happily there, unfortunately (or fortunately) I have installed linux on a dual boot and having installed some software I have a question... Where is it? I installed Apache, PHP, MySQL and separately phpmyadmin, Apache is up and running, I've seen my phpinfo page and MySQL is there. MySQL is telling me that there's a database for phpmyadmin, but...erm.. I can't seem to locate it. On a windows machine the directory would be in the www directory and I'd just navigate there... localhost/phpmyadmin/ but on Ubuntu I can't find it in the equivalent. I've been to /var/www/ and there's my index.html (from apache) and my phptest.php file but no phpmyadmin. There is a phpmyadmin in /lib but that only has 2 files in it. So having rambled lots, my question is, what do I have to do to be able to navigate to the phpmyadmin index page? I realise this could fall under the description of a server related question and should be posted elsewhere but as it's software on a home system some help would be appreciated. Do I need to move some files from somewhere? Help! I really don't want to have to go back to developing on Windows as I'll be deploying to a lamp system, my learning curve will be steep.

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• Find which files an apache process is writing to?

  - by Haluk

  We have this apache process which becomes io-bound time to time. Using atop, we can see it is a write operation. Using lsof -p <PID> we can see a list of files open by the httpd process. First we thought "log" files must be the problem. So we turned them off just to test. However write operations still continues. We will continue testing a few other things. For instance we use php session variables a lot. Maybe php session files are getting all the writing. But is there a way to quickly identify files which get written to by the httpd process? This way we can focus our efforts on those files. UPDATE: We used the strace command as suggested. Here are two lines from the output. write(23, "\27\0\0\0\3SET CHARACTER SET utf8", 27) = 27 write(23, "\17\0\0\0\3SET NAMES utf8", 19) = 19 We do not have a mysql process on this server. So is strace also showing what is being written to an ethernet port? UPDATE2: During high io load, the process which consumes most of the write resources gives the following output to strace -e trace=write -p <PID>: --- SIGCHLD (Child exited) @ 0 (0) --- write(9, "!", 1) = 1 write(19, "OPTIONS * HTTP/1.0\r\nUser-Agent: Apache (internal dummy connection)\r\n\r\n", 70) = 70 However I cannot figure out where these are being written to.

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• nginx giving of 404 when using set in an if-block

  - by ba

  I've just started using nginx and I'm now trying to make it play nice with the Wordpress plugin WP-SuperCache which adds static files of my blog posts. To serve the static file I need to make sure that some cookies aren't set, that it's not a POST-request and making sure the cached/static file exist. I found this guide and it seems like a good fit. But I've noticed that as soon as I try to set something inside an if my site starta giving 404s on an URL that isn't rewritten. The location block of the configuration: location /blog { index index.php; set $supercache_file ''; set $supercache_ok 1; if ($request_method = POST) { set $supercache_ok 0; } if ($http_cookie ~* "(comment_author_|wordpress|wp-postpass_)") { set $supercache_ok '0'; } if ($supercache_ok = '1') { set $supercache_file '$document_root/blog/wp-content/cache/supercache/$http_host/$1/index.html.gz'; } if (-f $supercache_file) { rewrite ^(.*)$ $supercache_file break; } try_files $uri $uri/ @wordpress; } The above doesn't work, and if I remove all the ifs above and add if ($http_host = 'mydomain.tld') { set $supercache_ok = 1; } and then I get the exact same message in the errors.log. Namely: 2010/05/12 19:53:39 [error] 15977#0: *84 "/home/ba/www/domain.tld/blog/2010/05/blogpost/index.php" is not found (2: No such file or directory), client: <ip>, server: domain.tld, request: "GET /blog/2010/05/blogpost/ HTTP/1.1", host: "domain.tld", referrer: "http://domain.tld/blog/" Remove the if and everything works as it should. I'm stymied, no idea at all where I should start searching. =/ ba@cell: ~> nginx -v nginx version: nginx/0.7.65

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• How to continue an HTTrack mirroring session from the command line?

  - by isme

  I want to drive my mirroring project using the Command Prompt instead of the WinHTTrack interface so that I can script and schedule the mirroring session more easily. The output of httrack --help gives a simple command for continuing an interrupted mirroring session: example: httrack --continue continues a mirror in the current folder When I try httrack --continue in my HTTrack project folder, all I get is output like this: Example: -%F "<!-- Mirrored from %s by HTTrack Website Copier/3.x [XR&CO'2010], %s -->" * Option %F needs to be followed by a blank space, and a footer string With each parameter on a new line for readability, the first line of my doit.log file looks like this: -qiC1%P0s0b0u1j0%s%u0N0%I0p1DaK0c1T30H0%kf2E1800A25000%c0.1%f#f -F "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)" -%F "" -%l "en, en, *" http://saa.gov.uk/search.php?SEARCHED=1&SEARCH_TABLE=council_tax&SEARCH_TERM=City+of+Edinburgh&DISPLAY_COUNT=100 -O1 "C:\\Users\\Iain\\Projects\\Council Tax Analysis\\Code\\HTTrack\\Council Tax Valuation List" -* \ +*search.php?SEARCHED=1* -*DISPLAY_MODE=FULL* The parameter %F "" should tell HTTrack to use an empty footer. I used the WinHTTrack interface to create the project and start the mirroring session. I can interrupt and continue the mirroring session using the interface. The HTML files saved by WinHTTrack have no footer.

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• Adventures in Drupal multisite config with mod_rewrite and clean urls

  - by moexu

  The university where I work is planning to offer Drupal hosting to staff/faculty who want a Drupal site. We've set up Drupal multisite with clean urls and it's mostly working except for some weird redirects. If you have two sites where one is a substring of the other then you'll randomly be redirected to the other site. I tracked the problem to how mod_rewrite does path matching, so with a config file like this: RewriteCond %{REQUEST_URI} ^/drupal RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ /drupal/index.php?q=$1 [last,qsappend] RewriteCond %{REQUEST_URI} ^/drupaltest RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ /drupaltest/index.php?q=$1 [last,qsappend] /drupaltest will match the /drupal line and all of the links on the /drupaltest page will be rewritten to point to /drupal. If you put the end of string character ($) at the end of each rewrite condition then it will always match on the correct site and the links will always be rewritten correctly. That breaks down as soon as a user logs in though because the query string is appended to the url so just the base url will no longer match. You can also fix the problem by ordering the sites in the config file so that the smallest substring will always be last. I suggested storing all of the sites in a table and then querying, sorting, and rewriting the config file every time a Drupal site is requested so that we could guarantee the order. The system administrator thought that was kludgy and didn't address the root problem. Disabling clean urls should also fix the problem but the users really want them so I'd prefer to keep them if possible. I think we could also fix it by using an .htaccess file in each site to handle the clean url rewriting but that also seems suboptimal since it will generate a higher load on the server and the server is intended to host the majority of the university's external facing web content. Is there some magic I can do with mod_rewrite to get it to work? Would another solution be better? Am I doing something the wrong way to begin with?

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