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hcMWn0LTbaM4geAgtogsResume an AWS Redshift Cluster
Resume an AWS Redshift Cluster
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Resuming an AWS Redshift cluster is the process of reactivating a previously paused cluster, bringing it back to its full operational state. This task resumes a cluster which means that computational capabilities are restored, and users can immediately execute queries, access data, and perform other database tasks. Resuming is swift, ensuring minimal downtime and enabling seamless transitions between paused and available/active states. This feature is invaluable for organizations that pause their clusters during off-peak hours to save costs and need to promptly reactivate them when demand surges, ensuring optimal resource utilization and cost efficiency.
inputs
outputs
import boto3
creds = _get_creds(cred_label)['creds']
access_key = creds['username']
secret_key = creds['password']
# Check if 'cluster_identifier' has been provided from the parent task. If not, initialize it to an empty string.
cluster_identifier = cluster_identifier if 'cluster_identifier' in locals() else ""
def resume_redshift_cluster(cluster_id, region):
# Check if the cluster_id is empty or not
if not cluster_id:
print("No Redshift Cluster provided for resuming.")
return
try:
redshift = boto3.client('redshift',aws_access_key_id=access_key,aws_secret_access_key=secret_key, region_name = region)
# Attempt to resume the specified Redshift cluster
response = redshift.resume_cluster(ClusterIdentifier=cluster_id)
# Check the cluster status to confirm the resume operation
if response['Cluster']['ClusterStatus'] == 'resuming':
print(f"Resuming cluster {cluster_id}.")
return True
else:
print(f"Unexpected status {response['Cluster']['ClusterStatus']} for cluster {cluster_id}.")
return False
# Handle specific exceptions
except redshift.exceptions.ClusterNotFoundFault:
print(f"Cluster {cluster_id} not found.")
return False
except redshift.exceptions.InvalidClusterStateFault:
print(f"Cluster {cluster_id} is in an invalid state for resuming. Ensure it is currently paused.")
return False
except redshift.exceptions.UnauthorizedOperation:
print(f"Unauthorized to resume cluster {cluster_id}. Check your AWS IAM permissions.")
return False
# Handle general exceptions
except Exception as e:
print(f"Error resuming cluster {cluster_id}: {e}")
return False
# Try resuming the cluster and print feedback
success = resume_redshift_cluster(cluster_identifier, resume_cluster_region)
if success is not None:
if success:
print("Resume operation initiated successfully.")
else:
print("Failed to initiate resume operation.")
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