[deyu1@kvm19 ansible]$ wget http://dywang.csie.cyut.edu.tw/materials/rkvfile.yml
[deyu1@kvm19 10827000]$ ansible-vault view rkvfile.yml Vault password: ansible vault test edit
[deyu1@kvm19 ansible]$ ansible-vault rekey rkvfile.yml Vault password: New Vault password: Confirm New Vault password: Rekey successful
[deyu1@kvm19 ansible]$ ansible-vault view rkvfile.yml Vault password: ansible vault test edit