Lab 3 - Solution
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Mandatory
=========

Try out ansible-doc
-------------------
* print out all available modules
* check the docu of the module ``command``
* check the docu of the modules ``yum`` and ``apt``

.. code-block:: bash

    ansible-doc -l
    ansible-doc command
    ansible-doc yum
    ansible-doc apt


Ping all hosts
--------------
* Run the ansible module "ping" on all hosts in your inventory
* Run the ansible module "ping" only on ``web1.<firstname>.lab``

.. code-block:: bash

    ansible -m ping all

    ansible -m ping web1.firstname.lab


Run the command modul
---------------------
* Run ``uname -a`` on all servers via ``command`` module
* Run ``whoami`` on all servers via ``command`` module
* Run ``cat /etc/redhat-release`` only on ``web2.<firstname>.lab``
* Run ``cat /etc/redhat-release`` only on ``web1.<firstname>.lab``

.. code-block:: bash

    ansible -a "uname -a" all

    # should be root
    ansible -a "whoami" all

    ansible -a "cat /etc/redhat-release" web2.pascal.lab

    # will fail! it's a Debian OS
    ansible -a "cat /etc/redhat-release" web1.pascal.lab