ansible-playbook -i myInventory demo.yml

-

PLAY [all] ******************************************************************** 

TASK: [ping ] ***************************************************************** 
ok: [head0001]
ok: [head0002]
ok: [cpu0001]
ok: [cpu0002]
ok: [head0003]

TASK: [shell uname -a] ******************************************************** 
changed: [head0001]
changed: [head0002]
changed: [cpu0002]
changed: [head0003]
changed: [cpu0001]

TASK: [debug var=UNAME] ******************************************************* 
ok: [head0002] => {
    "var": {
        "UNAME": {
            "changed": true, 
            "cmd": "uname -a", 
            "delta": "0:00:00.002711", 
            "end": "2015-08-04 09:16:23.247174", 
            "invocation": {
                "module_args": "uname -a", 
                "module_name": "shell"
            }, 
            "rc": 0, 
            "start": "2015-08-04 09:16:23.244463", 
            "stderr": "", 
            "stdout": "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux", 
            "stdout_lines": [
                "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux"
            ], 
            "warnings": []
        }
    }
}
ok: [head0003] => {
    "var": {
        "UNAME": {
            "changed": true, 
            "cmd": "uname -a", 
            "delta": "0:00:00.002311", 
            "end": "2015-08-04 09:16:23.503052", 
            "invocation": {
                "module_args": "uname -a", 
                "module_name": "shell"
            }, 
            "rc": 0, 
            "start": "2015-08-04 09:16:23.500741", 
            "stderr": "", 
            "stdout": "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux", 
            "stdout_lines": [
                "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux"
            ], 
            "warnings": []
        }
    }
}
ok: [cpu0001] => {
    "var": {
        "UNAME": {
            "changed": true, 
            "cmd": "uname -a", 
            "delta": "0:00:00.002420", 
            "end": "2015-08-04 09:16:23.593219", 
            "invocation": {
                "module_args": "uname -a", 
                "module_name": "shell"
            }, 
            "rc": 0, 
            "start": "2015-08-04 09:16:23.590799", 
            "stderr": "", 
            "stdout": "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux", 
            "stdout_lines": [
                "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux"
            ], 
            "warnings": []
        }
    }
}
ok: [head0001] => {
    "var": {
        "UNAME": {
            "changed": true, 
            "cmd": "uname -a", 
            "delta": "0:00:00.002707", 
            "end": "2015-08-04 09:16:23.130455", 
            "invocation": {
                "module_args": "uname -a", 
                "module_name": "shell"
            }, 
            "rc": 0, 
            "start": "2015-08-04 09:16:23.127748", 
            "stderr": "", 
            "stdout": "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux", 
            "stdout_lines": [
                "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux"
            ], 
            "warnings": []
        }
    }
}
ok: [cpu0002] => {
    "var": {
        "UNAME": {
            "changed": true, 
            "cmd": "uname -a", 
            "delta": "0:00:00.002626", 
            "end": "2015-08-04 09:16:23.452591", 
            "invocation": {
                "module_args": "uname -a", 
                "module_name": "shell"
            }, 
            "rc": 0, 
            "start": "2015-08-04 09:16:23.449965", 
            "stderr": "", 
            "stdout": "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux", 
            "stdout_lines": [
                "Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux"
            ], 
            "warnings": []
        }
    }
}

PLAY RECAP ******************************************************************** 
cpu0001                    : ok=3    changed=1    unreachable=0    failed=0   
cpu0002                    : ok=3    changed=1    unreachable=0    failed=0   
head0001                   : ok=3    changed=1    unreachable=0    failed=0   
head0002                   : ok=3    changed=1    unreachable=0    failed=0   
head0003                   : ok=3    changed=1    unreachable=0    failed=0