Official documentation for ansible: [[http://docs.ansible.com/ansible/intro_getting_started.html]]
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<sxh bash>
[root@redis ~]# yum info ansible.noarch | grep Version
Version     : 2.2.0.0
[root@redis ~]# yum info ansible1.9.noarch | grep Version
Version     : 1.9.6
</sxh>
Note: older syntax (1.9.x) is compatible with ansible 2.2.x.
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2.2.x syntax is NOT compatible with 1.9.x