Whenever you use the WordPress control panel to automatically install,
upgrade, or delete plugins, WordPress must make changes to files on the
filesystem. Before making any changes, WordPress first checks to see whether or not it has access to directly manipulate the file system. If WordPress does not have the necessary permissions to modify the filesystem directly, you will be asked for FTP credentials so that WordPress can try to do what it needs to via FTP.
The php in the server is running as a dso module. In order to fix the issue you have to change php to suphp.
If you need to enable suphp on the server, then you need to note the following points:
1. The php script that you are attempting to execute has permissions of no
more than 755 - 644 will work just fine normally, this is not something that
will need to be changed in most cases.
2. The permission of the directory that the script resides within is set to a
maximum of 755. This also includes directories that the script would need to
have access to also.
3. You shouldn't have a .htaccess file with php_values within it. They will
cause a 500 Internal server error, when attempting to execute the script.
4.The php_values will need to be removed from your .htaccess file and a php.ini
put in its place, containing the php directives as explained above.
Please verify above and let us know if we have to enable suphp in the server.
Thanks,
Frank
KnownHost Support