Why does the playbook fail?
Make sure that you are on ansible version >=2.1. You can check your ansible version by typing:
What is the username and password of the galaxy admin account ?
Username and password of the galaxy account are controlled by the variables
admin (Defaults are defined in group_vars/all). This should be changed in the group or host variables for the host you are working on.
If you have a host in the
mygroup group, you can edit group_vars/my_group and set
galaxy_admin: firstname.lastname@example.org galaxy_admin_pw: new_password
As with each change, run the playbook again.