[ansible@ansible ~]$ ansible-vault encrypt_string 'SuperSecret123!' --name 'db_password'
New Vault password: 
Confirm New Vault password: 
Encryption successful
db_password: !vault |
          $ANSIBLE_VAULT;1.1;AES256
          64663064386637346261633135653162356330353564373332613430336266313930323061646465
          6263373239316131626264623966343962303964343131360a623838393637643131623965663765
          39346333613866376437633137643838306330353632616366353966353062326366383232633264
          3933303831666237340a383038636464313235353166313661363139316161636464323539653138
          3530