I have recursively changed ownership of my www folder and everything in it to www-data:www-data. I am using the ubuntu user and have added myself to the www-data group and rebooted the server. I am getting the following error:
mkdir: cannot create directory 'dir_name': Permission denied
I can sudo mkdir, but from research it seems that if I have the right permissions then I should not have to sudo for mkdir. So I clearly lack the permissions, but I am not sure why, if I am in the correct group, as I am.
Your group needs to have write permissions to your www directory.
Right now you have rwx for the user than r-x for group and r-x for other.
You need to chmod g+w