Deep Dive with Ansible Dynamic inventory for aws cloud

Aws Cloud is so vast in services and it will be great if we can integrate with Ansible : 

Requirment : 

1.    setup and install ansible 
2.    install boto  2.24.0 +

Note :   I am using  ubuntu  16.04  for  setting up amazon  dynamic  Inventory.

Steps :

1.     Installing   ansible  and  boto

    root@adhoc:~#    sudo apt-add-repository ppa:ansible/ansible

    root@adhoc:~#    sudo apt  update

    root@adhoc:~#    sudo  apt  install ansible 

BOTO  Installation : 

     root@adhoc:~#    sudo  apt  install python-pip

     root@adhoc:~#    pip  install  boto

AWS CLI  Installation  : 

      root@adhoc:~#    pip  install  awscli  

      

AWS CLI  CONFIGURATION : 

      adhoc@adhoc:~$ sudo -i

      [sudo] password for adhoc: 

      root@adhoc:~# aws configure

       AWS Access Key ID [****************W5UQ]: 

       AWS Secret Access Key [****************0QTW]: 

       Default region name [us-west-2]: 

       Default output format [None]: 

Downloading  Ec2.py and  Ec2.ini  file  for Dynamic  Inventory 

  root@adhoc:~#   cd  /etc/ansible/

  root@adhoc:~#   wget  https://raw.githubusercontent.com/ansible/ansible/devel/contrib/inventory/ec2.py

  root@adhoc:~#   wget  https://raw.githubusercontent.com/ansible/ansible/devel/contrib/inventory/ec2.ini

  root@adhoc:~#   chmod  +x   ec2.py  ec2.ini


exporting some variables : 

  root@adhoc:~# export ANSIBLE_HOSTS=/etc/ansible/ec2.py

root@adhoc:~# export ANSIBLE_INI=/etc/ansible/ec2.ini


Now get all running Instances details info : 

Important: make sure your ansible time is updated as per internet Time.

root@adhoc:/etc/ansible# /etc/ansible/ec2.py  --list

{
  "_meta": {
    "hostvars": {
      "52.41.118.0": {
        "ansible_ssh_host": "52.41.118.0", 
        "ec2__in_monitoring_element": false, 
        "ec2_account_id": "904182454435", 

        "ec2_ami_launch_index": "0", 

Checking  Ping  module if firewall is configured : 

root@adhoc:/etc/ansible# ansible  all -u ec2-user --private-key /home/adhoc/Downloads/class1.pem -m ping 

52.41.118.0 | SUCCESS => {
    "changed": false,
    "ping": "pong"
}

Tip:    you can add private key location using ssh-agent so you don't have to specify ssh-keys

 root@adhoc:/etc/ansible#  ssh-agent  bash 
 root@adhoc:/etc/ansible#  ssh-add ~/.ssh/keypair.pem


Now you can ping to all ec2 instances

[root@localhost ~]# ansible all -m ping  -u ec2-user

[DEPRECATION WARNING]: ANSIBLE_HOSTS option, The variable is misleading as it can be a list of hosts and/or paths to
 inventory sources . This feature will be removed in version 2.8. Deprecation warnings can be disabled by setting
deprecation_warnings=False in ansible.cfg.
13.126.182.236 | SUCCESS => {
    "changed": false,
    "failed": false,
    "ping": "pong"
}

Note: ping only specific tag machine 
 
[root@localhost ~]# ansible  -m ping  -u ec2-user tag_ansible_machine[DEPRECATION WARNING]: ANSIBLE_HOSTS option, The variable is misleading as it can be a list of hosts and/or paths to
 inventory sources . This feature will be removed in version 2.8. Deprecation warnings can be disabled by setting
deprecation_warnings=False in ansible.cfg.
13.126.182.236 | SUCCESS => {
    "changed": false,
    "failed": false,
    "ping": "pong"
}
 

Some tasks :  

1.   Installing  httpd  software  

root@adhoc:/etc/ansible# ansible  all -s -u ec2-user --private-key /home/adhoc/Downloads/class1.pem -m yum -a "name=httpd state=present"

Note :   here   -s  means  sudo     and  -m for module

52.41.118.0 | SUCCESS => {
    "changed": true,
    "msg": "",
    "rc": 0,
    "results": [

        "Loaded plugins: priorities, update-motd, upgrade-helper\nResolving Dependencies\n--> Running transaction check\n---> Package httpd.x86_64 0:2.2.31-1.8.amzn1 will be installed\n--> Processing Dependency: httpd-tools = 2.2.31-1.8.amzn1 for package: httpd-2.2.31-1.8.amzn1.x86_64\n--> Processing Dependency: apr-util-ldap for package: httpd-2.2.31-1.8.amzn1.x86_64\n--> Processing Dependency: libaprutil-1.so.0()(64bit) for package: httpd-2.2.31-1.8.amzn1.x86_64\n--> Processing Dependency: libapr-1.so.0()(64bit) for package: httpd-2.2.31-1.8.amzn1.x86_64\n--> Running transaction check\n---> Package apr.x86_64 0:1.5.1-1.12.amzn1 will be installed\n---> Package apr-util.x86_64 0:1.4.1-4.17.amzn1 will be installed\n---> Package apr-util-ldap.x86_64 0:1.4.1-4.17.amzn1 will be installed\n---> Package httpd-tools.x86_64 0:2.2.31-1.8.amzn1 will be installed\n--> Finished Dependency Resolution\n\nDependencies Resolved\n\n================================================================================\n Package             Arch         Version                 Repository       Size\n================================================================================\nInstalling:\n httpd               x86_64       2.2.31-1.8.amzn1        amzn-main       1.2 M\nInstalling for dependencies:\n apr                 x86_64       1.5.1-1.12.amzn1        amzn-main       116 k\n apr-util            x86_64       1.4.1-4.17.amzn1        amzn-main        87 k\n apr-util-ldap       x86_64       1.4.1-4.17.amzn1        amzn-main        17 k\n httpd-tools         x86_64       2.2.31-1.8.amzn1        amzn-main