• https://www.ansible.com/
• ANSIBLE Documentation http://docs.ansible.com/ansible/index.html
• ANSIBLE Documentation Module Index http://docs.ansible.com/ansible/modules_by_category.html

yum install ansible

yum install epel-release
yum install ansible

useradd ansible
echo 'ansible:ansible' | chpasswd     <-  change password

cp -pi /etc/sudoers{,.`date '+%Y%m%d'`}
echo "ansible ALL=(ALL)       NOPASSWD:ALL" >> /etc/sudoers

useradd ansible
echo 'ansible:ansible' | chpasswd     <-  change password

su - ansible
ssh-keygen -t rsa
ssh-copy-id   x.x.x.x    <- Copy Publick Key to Target Server

[ansible@centos7 ~]$ ansible all -i 192.168.0.37, -a "hostname" -k
SSH password:
192.168.0.37 | SUCCESS | rc=0 >>
centos7b

cd /home/ansible
mkdir ansible1   <- ansible working directory
cd ansible1

touch hosts
vi hosts
-----------------------
[test]
192.168.0.37
-----------------------

[ansible@centos7 ansible1]$ ansible test -i hosts -a "hostname" -k
SSH password:
192.168.0.37 | SUCCESS | rc=0 >>
centos7b

[ansible@centos7 ansible1]$

[ansible@centos7 ansible1]$cat hosts
----------------------------
[all:vars]
ansible_ssh_pass=ansible

[test]
192.168.0.37
----------------------------

[ansible@centos7 ansible1]$ ansible test -i hosts -a "hostname"
192.168.0.37 | SUCCESS | rc=0 >>
centos7b

[ansible@centos7 ansible1]$

[ansible@centos7 ansible1]$ cat hosts
[test]
192.168.0.37 ansible_ssh_pass=ansible

[ansible@centos7 ansible1]$
[ansible@centos7 ansible1]$ ansible test -i hosts -a "hostname"
192.168.0.37 | SUCCESS | rc=0 >>
centos7b

[ansible@centos7 ansible1]$

$ ansible testservers -a "/bin/date"
$ ansible webservers -a "/sbin/reboot" -f 10 --sudo

$ ansible all -m ping
$ ansible -i /tmp/hosts all -m ping

$ ansible group1 -i /tmp/hosts all -m command -a "touch /tmp/test1.txt"

$ ansible testserver -m shell -a 'echo $TERM'

$ ansible testservers -m copy -a "src=/etc/hosts dest=/tmp/hosts"

$ ansible testservers -m file -a "dest=/tmp/hosts mode=600 owner=root group=root" -s -K

$ ansible webservers -m yum -a "name=httpd state=installed"

$ man ansible

NAME
       ansible - run a task on a target host(s)

SYNOPSIS
       ansible <host-pattern> [-m module_name] [-a args] [options]

ARGUMENTS
       host-pattern
           A name of a group in the inventory, a shell-like glob selecting hosts in inventory or any combination
           of the two separated by commas.

OPTIONS
       -i PATH, --inventory=PATH
           The PATH to the inventory, which defaults to /etc/ansible/hosts. Alternatively you can use a comma
           separated list of hosts or single host with traling comma host,.

       -a 'ARGUMENTS', --args='ARGUMENTS'
           The ARGUMENTS to pass to the module.

       -m NAME, --module-name=NAME
           Execute the module called NAME.

       -s, --sudo
           Run the command as the user given by -u and sudo to root (deprecated, use become).

       K, --ask-become-pass
           Ask for privilege escalation password.