"Attempting to decrypt but no vault secrets found" issue solution

Action

$ ansible-playbook -i /etc/ansible/hosts /etc/ansible/example.yml -v

Error
Attempting to decrypt but no vault secrets found

Solution
Add "--ask-vault-pass" OR "--vault-password-file <vault-file-path>" option to the end of the playbook command line

e.g.

$ ansible-playbook -i /etc/ansible/hosts /etc/ansible/example.yml -v --ask-vault-pass

el vs rhel

el (enterprise linux) e.g. centos, rocky linux, alma linux

rhel (red hat enterprise linux)

The main difference is that Red Hat provides technical support to the company/project if needs on RHEL. Also, there are various subscription options for being able to use RHEL for the companies at a cost.