I am using CentOS following these instructions https://www.digitalocean.com/community/tutorials/additional-recommended-steps-for-new-centos-7-servers on a new droplet. Any idea what’s wrong?
$ **sudo systemctl start firewalld** [sudo] password for xxx: Failed to start firewalld.service: Unit not found. $
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.