Can you explain what secrets are in Ansible and what they are used for?

In Ansible, secrets are confidential data such as passwords, API keys, certificates, and other sensitive parameters that cannot be stored in plain text in playbooks or inventories. To protect them, the Ansible Vault tool is used, which allows encrypting files containing such data.

Using secrets enables secure storage and transmission of confidential information necessary for automation, without the risk of disclosure when collaborating or storing in version control systems.

Example of using Ansible Vault:

# Create an encrypted file
ansible-vault create secret.yml

# Run a playbook using encrypted data
ansible-playbook playbook.yml --ask-vault-pass

In the playbook, you can reference variables from the encrypted file, and Ansible will automatically decrypt them during execution.