How to do installation of Ansible on AWS RHEL 8 EC2 server by Raj Gupta

User Name must be same on Master and all client

Install python on master and all client
[root@ip-172-31-91-21 ~]# yum install python3 -y

[root@ip-172-31-91-21 ~]# python3 --version
Python 3.6.8

If you want to use just python in place of python3 then

[root@ip-172-31-91-21 ~]# alternatives --set python /usr/bin/python3   ----Both master and client

Now python is also working 

[root@ip-172-31-91-21 ~]# python --version

Python 3.6.8

Now install pip   -------Only on Master

[root@ip-172-31-91-21 ~]# yum -y install python3-pip

Create a new user  (on Master and client )

[root@ip-172-31-91-21 ~]# useradd ansadmin
[root@ip-172-31-91-21 ~]# passwd ansadmin

Now add in visudo file (on Master and client )

[root@ip-172-31-91-21 ~]# echo "ansadmin ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers

Now for password base communication run the below command on both master and client

[root@ip-172-31-91-21 ~]# sed -ie 's/PasswordAuthentication no/PasswordAuthentication yes/' /etc/ssh/sshd_config

[root@ip-172-31-91-21 ~]# sudo service sshd reload

Redirecting to /bin/systemctl reload sshd.service

[root@ip-172-31-91-21 ~]#

Install Ansible as a ansadmin user (on Master)

[root@ip-172-31-91-21 ~]# su - ansadmin

[ansadmin@ip-172-31-91-21 ~]$ pip3 install ansible --user

[ansadmin@ip-172-31-91-21 ~]$ ansible --version

ansible 2.8.3

Log in as a ansadmin user on master and generate ssh key (on Control node)

[ansadmin@ip-172-31-91-21 ~]$ ssh-keygen

Copy keys onto all ansible managed hosts (on Control node)

ssh-copy-id ansadmin@<target-server-ip>

Validation test


Create a directory /etc/ansible and create an inventory file called "hosts" add control node IP address in it.(Because it is not avable by default in RHEL8)


Run ansible command as ansadmin user it should be successful (Master)

ansible all -m ping