what does this command Mean?

ansible -m ping all

Why am I getting the same warnings and Errors when I tried running my Playbook? (starfish.yml)

So, that means: My Playbook is Right? But something important is Not. What is that?
Please Help…Thank You.

With Hope,
Prabhakaran

The following are the Warnings and Errors:
/usr/lib/python2.7/site-packages/ansible/parsing/vault/_init.py:44: CyptographyDeprecationWarning: Python 2 is no longer supported by the Python core team. Support for it is now deprecated in cryptography, and will be removed in a future release.
from cryptography.exceptions import InvalidSignature
[WARNING]: * Failed to parse /etc/ansible/hosts with yaml plugin: We were unable to read either as JSON nor YAML, these are the errors we got from each: JSON: No JSON object could be decoded Syntax Error while loading YAML. expected ‘’, but found ‘[’ The error appears to be in ‘/etc/ansible/hosts’: line 4, column 1, but may be elsewhere in the file depending on the exact syntax problem. The offending line appears to be: ] [starfish] ^ here
[WARNING]: * Failed to parse /etc/ansible/hosts with ini plugin: need more than 2 values to upack
[WARNING]: Unable to parse /etc/ansible/hosts as an inventory source

[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match ‘all’

Hello Prabhakaran,

What exactly you want try is it ping or any other task

Please add the host/ target IP or DNS in hosts files the perform below operation

If ping then try
1 create playbookdemo.yml
2 copy below code and paste playbookdemo.yml