WordPress Permalinks not working on Ubuntu 10.04 – mod_rewrite issue requires a symlink

by PHILIP OAKLEY on JULY 27, 2010

I recently installed WordPressMU on a virtual server and had problem with the permalinks. Much Google searching followed with little success at first but after some persistence I found the answers I needed.

I will try and write this up for three reasons:

1. So hopefully it could benefit someone else with the same problem
2. To try and better understand it myself
3. I will no doubt forget for next time and need to refer back.

The bulk of this post is taken from a fantastic post on the Drupal site (http://drupal.org/node/332318). Although I had done lots of Google searches I struggled to find the answer for quite some time until I hit the post above. I think this is because the key to finding the right answer for a problem is finding someone with the same set-up. Saying this I found the solution to my WordPress problem on Drupal site although the issue was with a common problem area of ‘mod_rewrite’ on the Apache web server and in particular the Apache server running on Ubuntu. Ubuntu has a different way of storing apache settings (e.g it has a blank htppd.conf and uses apache2.conf) and holds modules in an ‘enabled’ folder not in the main settings file. This may well be better way than the ‘other’ ways but it can mean that a lot of the mod_rewrite ‘solutions’ on Google are not relevant if they are not specifically for Ubuntu.

Just quickly for this project my setup was:

Virtual Server Provider: VPS.net

Base install: Ubuntu 10.04 (Lucid) x64 LAMP*

WordPress 3.0 (with Multisite enabled)

* This was a preconfigured Ubuntu server with LAMP already instated and my experience may have been different if I had taken a clean Ubuntu install and installed LAMP myself. VPS.net do a offer a fully preconfigured WordPress server in Ubuntu which I am sure would have not had these issues but I wanted to install WordPressMU and this requires the install to be on the www root (VPS.net install it on a folder called WordPress) and the latest version. In my way of thinking I would prefer to install from scratch on a clean webserver than upgrading/moving an existing install – OK I like to learn the hardway.

Anyway the solution to my problem:

1. First we need to check if the rewrite module is installed. I was connected to my VPS server via SSH but either in a Terminal or via SSH type (or copy from below):

[[code]]czoxNzpcIg0KYXBhY2hlMmN0bCAtTQ0KXCI7e1smKiZdfQ==[[/code]]

This should show a list of Apache modules. Rewrite_Module should be there (as it is a default in Ubuntu 10.04) but if not check with your FTP client or in your file browser that /etc/apache2/mods-available contains a file called rewrite.load. If it does not then you need to fix this before you can carry on.

Presuming it does exist then we need to create a symlink (Symbloic Link on Wikipedia) between mods-enabled to mods-available. Again in the Terminal/SSH type or copy:

[[code]]czo3NTpcIg0KY2QgL2V0Yy9hcGFjaGUyL21vZHMtZW5hYmxlZA0Kc3VkbyBsbiAtcyAuLi9tb2RzLWF2YWlsYWJsZS9yZXdyaXRlLmx7WyYqJl19b2FkDQpcIjt7WyYqJl19[[/code]]

2. Now we need to check that rewrite module rewrite.load is in the mods enabled folder (/etc/apache2/mods-enabled). The easiest way is to have a look at that folder with your FTP client or file browser.

3. Presuming you are still OK then then the final and very important stage is to ‘Enable AllowOverride All’

In the folder /etc/apache2/sites-enabled you should find a file called 000-default and you need to check that all permissions are set to read & write not just read only, easily done with an FTP client (right click file>File Permissions in Filezilla)

In 000-default it will probably say AllowOverride None in several places. Find the one for where you’ve installed WordPress , and change it to AllowOverride All. e.g if WordPress is installed atvar/www/????? then it may be under the Directory “/var/www” grouping.

Finally, dont forget to restart Apache from the terminal:

/etc/init.d/apache2 restart

(now corrected see Keith’s comment)

if you don’t restart none of the changes will take affect

That worked for me and hopefully will work for somebody else. A big thanks to the Drupal site for thepost but I thought it was worth regurgitating for WordPress users as I am sure it could affect a few.

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Tagged as: apache, howto, ubuntu, wordpress

wine start /unix problem opening .exe files with Wine

wine start /unix problem opening .exe files with Wine

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Solution #4: Change the default launch command

Edit the default launch command for wine

Code:

gksu gedit /usr/share/applications/wine.desktop

Change from

Code:

Exec=cautious-launcher %f wine start /unix

onto

Code:

Exec=wine start /unix %f

Unuttuğunuz Mysql phpmyadmin şifresini değiştirmek

If you have never set a root password for MySQL server, the server does not require a password at all for connecting as root. To setup root password for first time, use mysqladmin command at shell prompt as follows:
$ mysqladmin -u root password NEWPASSWORD
However, if you want to change (or update) a root password, then you need to use the following command:
$ mysqladmin -u root -p'oldpassword' password newpass
For example, If the old password is abc, you can set the new password to 123456, enter:

$ mysqladmin -u root -p'abc' password '123456'

Change MySQL password for other users

To change a normal user password you need to type (let us assume you would like to change password for user vivek) the following command:
$ mysqladmin -u vivek -p oldpassword password newpass

Changing MySQL root user password using MySQL sql command

This is another method. MySQL stores username and passwords in user table inside MySQL database. You can directly update password using the following method to update or change password for user vivek:

1) Login to mysql server, type the following command at shell prompt:
$ mysql -u root -p

2) Use mysql database (type command at mysql> prompt):

mysql> use mysql;

3) Change password for user vivek, enter:

mysql> update user set password=PASSWORD("NEWPASSWORD") where User='vivek';

4) Finally, reload the privileges:

mysql> flush privileges; mysql> quit

The last method can be used with PHP, Python or Perl scripting mysql API.

Ubuntu işletim sisteminde dosya ve dizin silme komutu

Ubuntu işletim sisteminde dosya ve dizin silme komutu olarak görev yapmaktadırlar. Dosya silmek için rm, dizin silmek için rmdir komutu kullanılır. Silmek istediğiniz dizinin içi boş ise rmdir komutu ile kolayca silebilirsiniz. Fakat silmek istediğiniz dizinin içi boş değilse rmdir komutu dizini silemeyecektir. Bu gibi durumlarda rm -r komutunu kullanabilirsiniz. Rm ve rmdir komutlarının aldığı bazı parametre sistemleri vardır. Dosyanın silinmesi

PhpMyAdmin’den WordPress Admin Şifresi Değiştirmek

Wordpress Admin Şifremi Nasıl Değiştiririm, Wordpress Parola Sıfırlamak, Wordpress Şifremi Unuttum, Wordpress Şifresi Değiştirmek, Wordpress Şifresinin Phpmyadminden Değiştirmek

Eğer olurda bir WordPress admin şifrenizi unutursanız ya da herhangi bir şekilde parolanızı sıfırlayamıyorsanız, aşağıda anlatacağım yöntemle WordPress admin panel şifrenizi değiştirebilirsiniz.

cPanel için:

cPanel’e giriş yapıyoruz. Bilmeyenler için söylüyorum cPanele giriş için; http://siteadi.com:2082 ya da http://siteadi.com/cpanel . Karşınıza gelen pencereye hosting sağlayıcınızın verdiği bilgileri girerek devam diyoruz. Ardından cPanel’deki PhpMyAdmin‘i seçiyoruz. Sol taraftan WordPress’in kurulu olduğu veritabanını seçtikten sonra tablolar arasından wp_users‘a giriyorsunuz ve karşınıza aşağıdaki gibi bir bölme geliyor.

Bu resim yeniden boyutlandırılmıştır. Orijinal boyut için bu çubuğa tıklayınız. (618x49px)

Yukarıda gördüğünüz bölmede user_pass altındaki karışık rakam ve yazılar, admin panel şifremizin md5 ile şifrelenmiş halidir. Bu bölümü değiştirmek için admin tablosunun en solundaki kaleme tıklayıp düzenle diyoruz. user_pass başlığı altındaki karışık kodları silip yerine 320c0ee3ef9c331d766799413dba44ef eksiksiz şekilde bu kodları yazıyorsunuz. Bu işlemide yaptıktan sonra yeni parolanız: plusbilgi oluyor.

Plesk Panel içinse,

Panele giriş yaptıktan sonra, veritabanlarından WordPress kurulu olan veritabanını seçiyorsunuz ve yukarıda beliren myadmin ikonuna tıklıyorsunuz ve yukarıdaki tüm işlemleri aynen yapıyorsunuz.

Yukarıdaki tüm işlemleri yaptıktan sonra, admin panelinize giriş yapıp admin panelinizden şifreyi değiştirmeyi unutmayın.