Ansible : Install2020/03/17

	Install Ansible which is the configuration management tool. Ansible does not require dedicated server/client program, it needs Ansible command and SSH only.
[1]	Start SSH service on all client hosts which you'd like to manage with Ansible.
[2]	Install Ansible.

# install from EPEL

[root@dlp ~]#

dnf --enablerepo=epel -y install ansible openssh-clients

[3]	Define client hosts as management targets.

[root@dlp ~]#

vi /etc/ansible/ansible.cfg

# line 71: change if need (check or not SSH host key)

host_key_checking = False

[root@dlp ~]#

vi /etc/ansible/hosts

# add to the end

# set target hosts

10.0.0.50

# set targets as a group

# any group name

[target_servers]

# set targets per line

10.0.0.51
10.0.0.52

# confirm settings

# show all defined hosts

[root@dlp ~]#

ansible all --list-hosts

  hosts (3):
    10.0.0.50
    10.0.0.51
    10.0.0.52

# show specific hosts in a group

[root@dlp ~]#

ansible target_servers --list-hosts

  hosts (2):
    10.0.0.51
    10.0.0.52

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