Dynamic Inventory file

To get list of inventory plugins

ansible-doc -t inventory -l

Steps to dynamically get hosts from aws

Add Enable plugin syntax in ansible cfg file (Ansible Manager Machine)

[inventory]

enable_plugin = host_list,script,auto,yaml,ini,toml

2. Install boto3(aws uses boto packages to connect with cloud) (Ansible Manager Machine)

pip3 install boto3

pip3 install botocore

3. Create AWS User and export creds on ansible engine (Ansible Manager Machine)

Using env variable add the AWS_ACCESS_KEY AND AWS_SECRET_KEY in ansible engine

export AWS_ACCESS_KEY=''

export AWS_SECRET_KEY=''

4. Create yml file for AWS plugin (AWS_PLUGIN_FILE_NAME.yml)

plugin: amazon.aws.aws_ec2

filters:

instance-state-name: running

5. Now we can verify and populate our dynamic inventory using the command:

ansible-inventory -i <AWS_PLUGIN_FILE_NAME> --graph

To get full information use --list

ansible-inventory -i <AWS_PLUGIN_FILE_NAME> --list

6. Using dynamic inventory file to ping the machines using a adhoc command

ansible all -i <AWS_PLUGIN_FILE_NAME> -m ping

To pass a specific user through which we want to connect to our aws machine we can use

-u flag

ansible all -i <AWS_PLUGIN_FILE_NAME> -u ec2_user -m ping

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