How can I fix the MediaWiki error “Wiki uses cookies to log in users. You have cookies disabled. Please enable them and try again.”?

Question

The problem I am having is that I can not log on to my newly created wiki that I made using MediaWiki. I have searched the web for an answer, and the ones I found did not help w

Answer 1

I'm adding a new answer because my setup was slightly different, and the steps I took were similar but not identical to everyone else's.

I installed MediaWiki on CentOS with NGINX. After running it successfully for a few months, I started to get the same cookie error out of nowhere.

The issue I had was that the php-fpm user lacked access to the session.save_path folder. I don't know why it happened, but here's now I fixed it.

I ran a variation of SprintCycle's command to identify where the sessions were stored:

php-fpm -i|grep --color save_path

In my case, it was /var/lib/php/session.

Then I changed directories and set permissions:

cd /var/lib/php
chmod -R 1777 session

I restarted the services, and everything worked again.

service nginx restart
service php-fpm restart