850304-Tanmay

#!/usr/bin/env python
 
import boto3
 
ec2 = boto3.resource('ec2')
ec2client = boto3.client('ec2')

 
#-----Define Lambda function-----#
def lambda_handler(event, context):
 
#-----Check& filter Instances which  Kloud_managed equal true-----#
    instances = ec2client.describe_instances(Filters=[{'Name': 'tag:kloud_managed', 'Values': ['True']}])
 
#-----Define dictionary to store Tag Key & value------#
    dict={}
 
#-----Store Key & Value of Instance Tag:“Name” ------#
    for reservation in instances['Reservations']:
        for instance in reservation['Instances']:
           for tag in instance['Tags']: 
                if tag['Key'] == 'Name':
                    #print ( instance['InstanceId'],tag['Value'])
                    #ids.append(( instance['InstanceId'],tag['Value']))
                    dict[instance['InstanceId']]= tag['Value']
                    
#-----Store Key & Value with attached instance ID of all volumes ------#     
    volumes = ec2.volumes.all() 
    for volume in volumes:
 
#-----compare dictionary value Key:InstanceID and volume attached Key:InstanceID ------#     
        for a in volume.attachments:
            for key, value in dict.items():
 
#-----compare dictionary value Key:InstanceID and volume attached Key:InstanceID ------# 
#-----If the InstanceID matched create new Tag:’Kloud_Name’ with key of value: servername ------#     
    
            if a['InstanceId'] == key:
                     volume.create_tags(Tags=[{'Key': 'Kloud_Name', 'Value': value}])