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Ansible

Devops: it is technology that use for the automation engineering( to do  work many times that's repeating many of time and do easily  perform that so we are do this work on only one system and doing all which is connected by one network that is called automation ).
in 1991 use the c language and  making CFengine, it is  more popular and frequently use .
in 2005  use the Ruby language and making puppet its more popular and use
in 2009 use the Ruby and chef  that is best
in 2012 use the python language and making many of the tool like ansible, salt stack, juju, teraform

We are learn here ansible and use the linux to linux communication host
 In the ansibe  we doing automation, open source, powerful, and in the redhat we  exam Ex407   and easy to setup the ansible.
Requirement:

  1. Two are more machine in a network
  2. to run the task need to protocol to access all machine
  3. node machine and targate machine accessible by the ssh
  4. password authentication method change, we are use the private and public key 
  5. node to targate machine (ssh must be password less) 
We are generate public and private key
# ssh-keygen -t rsa 
the key will generate by the rsa key  


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