start a cluster if there is no cluster already running. Use start or stop after the file name. For e.g. # python redshift.py stop

redshift.py

#!/usr/bin/python

import boto
conn = boto.connect_redshift(aws_access_key_id='key', aws_secret_access_key='secret')

import datetime
mymonth = datetime.datetime.now().strftime("%b").lower()
myday = datetime.datetime.now().strftime("%d")
myvar = mymonth+myday+'-viva-mar5-deliveryreport-new'

response = conn.describe_cluster_snapshots()
snapshots = response['DescribeClusterSnapshotsResponse']['DescribeClusterSnapshotsResult']['Snapshots']
snapshots.sort(key=lambda d: d['SnapshotCreateTime'])
mysnapidentifier = snapshots[-1]['SnapshotIdentifier']

mydict=conn.describe_clusters()

def start_cluster():
    try:
        myidentifier=mydict['DescribeClustersResponse']['DescribeClustersResult']['Clusters'][0]['ClusterIdentifier']
    except IndexError:
        conn.restore_from_cluster_snapshot('viva-mar5-deliveryreport-new', mysnapidentifier, availability_zone='us-east-1a')
        print "start a new cluster if no cluster is active"

def stop_cluster():
    try:
        myidentifier=mydict['DescribeClustersResponse']['DescribeClustersResult']['Clusters'][0]['ClusterIdentifier']
        conn.delete_cluster(myidentifier, skip_final_cluster_snapshot=False, final_cluster_snapshot_identifier=myvar)
        print "stop cluster and take backup"
    except:
        print "No cluster is active right now"

print "viv.us-east-1.redshift.amazonaws.com:5439:mydb:root:passwd"

import argparse

parser = argparse.ArgumentParser(description="Manage the cluster")
parser.add_argument("action", choices=["stop", "start"], help="Choose start or stop")

args = parser.parse_args()
print args
if args.action == "start":
    start_cluster()
if args.action == "stop":
    stop_cluster()