boto3_list_instances_env_role

boto3_list_instances_env_role.py

#!/usr/bin/env python
import boto3


def list_instances_env_role(env, role):

    """
    List of instances with tag:Environment and tag:Role

    """

    ec2client = boto3.client('ec2')

    filter_env = {'Name': 'tag:Environment', 'Values': [env]}
    filter_role = {'Name': 'tag:Role', 'Values': [role]}

    response = ec2client.describe_instances(Filters=[filter_env, filter_role])

    instancelist = []

    for reservation in (response["Reservations"]):

        for instance in reservation["Instances"]:

            instancelist.append(instance["InstanceId"])

    return instancelist