Install WordPress in its own directory but permalink fails

Finally I find the problem. It's the AllowOverride option in httpd.conf which is located in /etc/httpd/conf/httpd.conf, "sudo find / -name httpd.conf -print" can easily find it.I changed any AllowOverride NONE->ALL where i can find in the file. It just worked,even without doing any change to .htaccess

<IfModule mod_rewrite.c>    RewriteEngine On    RewriteBase /    RewriteRule ^index\.php$ - [L]    RewriteCond %{REQUEST_FILENAME} !-f    RewriteCond %{REQUEST_FILENAME} !-d    RewriteRule . /index.php [L]</IfModule>

This .htaccess works on my host in which wordpress is installed in its own directory.

Thank you @adlawson @Will, without you, I couldn't find the problem.

http://codex.wordpress.org/Using_Permalinks this official guide is quite enough to use permalink even wordpress is installed in a sub directory.

Have a look at this post How does RewriteBase work in .htaccess

You need to change RewriteBase / to RewriteBase /wordpress

I did not need to edit RewriteBase in .htaccess.The problem really is in httpd configuration for EC2 machines.

My .htaccess -

<IfModule mod_rewrite.c>RewriteEngine OnRewriteBase /RewriteRule ^index\.php$ - [L]RewriteCond %{REQUEST_FILENAME} !-fRewriteCond %{REQUEST_FILENAME} !-dRewriteRule . /index.php [L]</IfModule>

In /etc/httpd/conf/httpd.conf -

<Directory />    Options FollowSymLinks    AllowOverride All</Directory># AllowOverride controls what directives may be placed in .htaccess files.# It can be "All", "None", or any combination of the keywords:#   Options FileInfo AuthConfig Limit#AllowOverride All