How to install ansible on AWS-setup ansible lab in aws with ec2 instances

How to install ansible on AWS ec2 instances

to install ansible on Amazon Linux or to setup ansible lab in aws we need two or three ec2 instances. one is ansible master ec2 instance remaining ec2 instances are clients. in the master ec2 instance only we will install ansible.

Launch three or two ubuntu 16.04 instances

give Name one ubuntu ec2 instances as ansible-master

give remaining ec2 instances names as client1, clinet2

in both ansible master and clients security groups

open ssh port no 22 from anywhere

How to setup ansible practice lab in aws ec2 instances

ansible built on python so install python in all machines

install python in ansible master and clients instances

ansible and its modules are built on python, so we have to install python in all master and client machines.

to install python execute below commands as root user

sudo -i

apt-get install python-minimal

apt-get install python3

check python version with

 python --version
Python 2.7.12

installing ansible in ansible master instance

run below commands as root user

sudo -i

apt-get update

apt-get install software-properties-common

apt-add-repository ppa:ansible/ansible

apt-get update

apt-get install ansible

check ansible with

ansible --version
ansible 2.6.3
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.12 (default, Dec  4 2017, 14:50:18) [GCC 5.4.0 20160609]

establish ssh connection between ansible master and clients

to establish a connection between master and clients we have to generate the id_rsa.pub key in master and paste this key in authorized_keys file of client machines. This file exists in the .ssh directory. So if the .ssh directory has not existed in client ec2 instances, We have to create the .ssh directory and inside that, we have to create the authorized_keys file.

generating id_rsa.pub public key in ansible master instance

in master, ec2 instance execute below commands

sudo –i

ssh-keygen -t rsa

setup ansible lab in aws ec2 instanaces

It will create the id_rsa.pub key in the .ssh directory

cd .ssh

ls

id_rsa  id_rsa.pub known_hosts

cat id_rsa.pub

setup ansible in aws

Copy this id_rsa.pub key

In All Client Ec2 Instances

Sudo -i

cd .ssh

Here you can see the authorized_keys file. [If the file is not existed here create the file with touch command

touch authorized_keys and paste the id_rsa.pub key in this file

Vi authorized_keys

configure ansible in aws ec2

Paste id_rsa.pub key of the master here

setup ansible in aws ec2 now we have shared ssh keys between master and clients

Adding clients to ansible master

to add clients to ansible master machine, we need to add all IP's of clients in master machine /etc/ansible/hosts file

now go to ansible master machine

Ansible AWS Inventory

cd /etc/ansible

vi hosts

add like below

[web]

10.0.0.14

install ansible in aws ec2 instance

here 10.0.0.14 is private IP of the client1 machine

here you can mention all client machines private IP's

configure ansible in aws

the first time it will ask are you sure you want to continue connecting yes/no

write yes and click on enter

you can see the output in green color.

now we have successfully configured ansible practice lab in aws.

now you can run your playbooks and roles in clients.

IMP POINTS

allow ssh port forwarding between clients and master by opening port no 22
install python in all master and client ec2 instances
install ansible in master ec2 instance
generate the public key in ansible master instance
copy id_rsa.pub key and paste in all clients instances authorized_keys file
enter all client IPs in master /etc/ansible/hosts file
now you can run your playbooks

install ansible in aws ec2 instances
ansible aws
ansible training in dilsukhnagar
aws ansible
install ansible on Amazon Linux
ansible aws example
ansible connect to the ec2 instance
how to install ansible on aws ec2 instance

vamsi krishna dhulipala says:

at

I am creating and working Ansible roles, followed the procedure till the end (procedure copy pasted below) receiving the error message I would like to request for a resolution and assistance to this issue.

Procedure:
Create two aws ec2 (ubuntu) instances, for Ansible Master and Ansible Client

On Ansible Master
** Do not use root privileges (NO sudo su)

sudo apt-get update &&
sudo apt install software-properties-common &&
sudo apt-add-repository ppa:ansible/ansible &&
sudo apt-get update &&
sudo apt install ansible &&
sudo apt-get update

On Ansible Client
** Do not use root privileges (NO sudo su)

sudo apt-get update &&
sudo apt-get install python &&
sudo apt-get update

On Ansible Master

cd .ssh
ssh ubuntu@172.31.85.140
ls
ssh-keygen
ls
sudo cat id_rsa.pub

On Ansible Client

cd .ssh
ls
sudo nano authorized_keys
Paste the key from Ansible Master id_rsa.pub to authorized_keys in ansible client

On Ansible Master

ssh ubuntu@172.31.85.140  (—> Ansible client IP Address)
Connected to Ansible Client
exit (to close the connection)

On Ansible Master

sudo nano /etc/ansible/hosts
Inside hosts

[production]
client1 ansible_ssh_host=172.31.85.140 (–> client ip address)

save & exit
ansible -m ping client1

On Ansible Master
Creating Ansible Roles

cd /etc/ansible/roles/
inside roles Install tree
sudo apt install tree
To create Ansible Role
sudo ansible-galaxy init <role name> –offline
To see the tree
tree web (–>role name)
ubuntu@ip-172-31-84-177:/etc/ansible/roles$ tree web
web(–> role name)
├── README.md
├── defaults
│   └── main.yml
├── files
├── handlers
│   └── main.yml
├── meta
│   └── main.yml
├── tasks
│   └── main.yml
├── templates
├── tests
│   ├── inventory
│   └── test.yml
└── vars
└── main.yml

cd web
cd tasks
ubuntu@ip-172-31-84-177:/etc/ansible/roles/web/tasks$

ls (shows main.yml file)
sudo nano main.yml

inside main.yml file

—

# tasks file for web

– include: install.yml

– include: configure.yml

– include: service.yml

save & exit

Inside tasks folder create
install.yml
configure.yml
service.yml

inside install.yml

—

– name: install apache2

apt: name=apache2 update_cache=yes state=latest

inside configure.yml

—

– name: configure website

copy: src=index.html dest=/var/www/html

inside service.yml

—

– name: starting apache2 service

service: name=apache2 state=started

cd .. (inside the web directory)

ubuntu@ip-172-31-84-177:/etc/ansible/roles/web$

ls

cd files

sudo nano index.html

inside index.html

<html> Hello world !</html>

cd ..

cd ..

cd .. (inside the ansible directory)

ubuntu@ip-172-31-84-177:/etc/ansible$

sudo nano site.yml
inside site.yml

—

– hosts: client1

roles:

– web

save & exit

ansible-playbook site.yml –syntax-check

ansible-playbook site.yml

Error:

[WARNING]: Updating cache and auto-installing missing dependency: python-apt
fatal: [client1]: FAILED! => {“changed”: false, “cmd”: “apt-get update”, “msg”:
“E: Could not open lock file /var/lib/apt/lists/lock – open (13: Permission denied)\nE: Unable to lock directory /var/lib/apt/lists/\nW: Problem unlinking the file /var/cache/apt/pkgcache.bin – RemoveCaches (13: Permission denied)\nW: Problem unlinking the file /var/cache/apt/srcpkgcache.bin – RemoveCaches (13: Permission denied)”, “rc”: 100, “stderr”:
“E: Could not open lock file /var/lib/apt/lists/lock – open (13: Permission denied)\nE: Unable to lock directory /var/lib/apt/lists/\nW: Problem unlinking the file /var/cache/apt/pkgcache.bin – RemoveCaches (13: Permission denied)\nW: Problem unlinking the file /var/cache/apt/srcpkgcache.bin – RemoveCaches (13: Permission denied)\n”, “stderr_lines”:
[“E: Could not open lock file /var/lib/apt/lists/lock – open (13: Permission denied)”, “E: Unable to lock directory /var/lib/apt/lists/”, “W: Problem unlinking the file /var/cache/apt/pkgcache.bin – RemoveCaches (13: Permission denied)”, “W: Problem unlinking the file /var/cache/apt/srcpkgcache.bin – RemoveCaches (13: Permission denied)”], “stdout”: “Reading package lists…\n”, “stdout_lines”: [“Reading package lists…”]}

PLAY RECAP ********************************************************************************************************************************************
client1 : ok=1 changed=0 unreachable=0 failed=1 skipped=0 rescued=0 ignored=0

How to resolve it, can you please assist me.

Reply
- decoding devops says:
  
  at
  1. first kill the process which started apt get update
  2. where did you paste the code i mean on which user(client) .ssh/authorized_keys file
  3. when u r connecting to the client machine u have to know through which user(client) u r connecting, check this article once https://www.decodingdevops.com/ansible-become-tutorial/
  4. if u want to run commands like apt get update or apt get install, the user(client) should be in sudo user
  Reply