Amazon Redshift¶
Amazon Redshift manages all the work of setting up, operating, and scaling a data warehouse: provisioning capacity, monitoring and backing up the cluster, and applying patches and upgrades to the Amazon Redshift engine. You can focus on using your data to acquire new insights for your business and customers.
Prerequisite Tasks¶
To use these operators, you must do a few things:
Create necessary resources using AWS Console or AWS CLI.
Install API libraries via pip.
pip install 'apache-airflow[amazon]'Detailed information is available Installation
Operators¶
Create an Amazon Redshift cluster¶
To create an Amazon Redshift Cluster with the specified parameters you can use
RedshiftCreateClusterOperator
.
create_cluster = RedshiftCreateClusterOperator(
task_id="create_cluster",
cluster_identifier=redshift_cluster_identifier,
vpc_security_group_ids=[set_up_sg],
publicly_accessible=True,
cluster_type="single-node",
node_type="dc2.large",
master_username=DB_LOGIN,
master_user_password=DB_PASS,
)
Resume an Amazon Redshift cluster¶
To resume a ‘paused’ Amazon Redshift cluster you can use
RedshiftResumeClusterOperator
You can also run this operator in deferrable mode by setting deferrable
param to True
resume_cluster = RedshiftResumeClusterOperator(
task_id="resume_cluster",
cluster_identifier=redshift_cluster_identifier,
)
Pause an Amazon Redshift cluster¶
To pause an available
Amazon Redshift cluster you can use
RedshiftPauseClusterOperator
.
You can also run this operator in deferrable mode by setting deferrable
param to True
pause_cluster = RedshiftPauseClusterOperator(
task_id="pause_cluster",
cluster_identifier=redshift_cluster_identifier,
)
Create an Amazon Redshift cluster snapshot¶
To create Amazon Redshift cluster snapshot you can use
RedshiftCreateClusterSnapshotOperator
create_cluster_snapshot = RedshiftCreateClusterSnapshotOperator(
task_id="create_cluster_snapshot",
cluster_identifier=redshift_cluster_identifier,
snapshot_identifier=redshift_cluster_snapshot_identifier,
poll_interval=30,
max_attempt=100,
retention_period=1,
wait_for_completion=True,
)
Delete an Amazon Redshift cluster snapshot¶
To delete Amazon Redshift cluster snapshot you can use
RedshiftDeleteClusterSnapshotOperator
delete_cluster_snapshot = RedshiftDeleteClusterSnapshotOperator(
task_id="delete_cluster_snapshot",
cluster_identifier=redshift_cluster_identifier,
snapshot_identifier=redshift_cluster_snapshot_identifier,
)
Delete an Amazon Redshift cluster¶
To delete an Amazon Redshift cluster you can use
RedshiftDeleteClusterOperator
delete_cluster = RedshiftDeleteClusterOperator(
task_id="delete_cluster",
cluster_identifier=redshift_cluster_identifier,
)
Sensors¶
Wait on an Amazon Redshift cluster state¶
To check the state of an Amazon Redshift Cluster until it reaches the target state or another terminal
state you can use RedshiftClusterSensor
.
wait_cluster_available = RedshiftClusterSensor(
task_id="wait_cluster_available",
cluster_identifier=redshift_cluster_identifier,
target_status="available",
poke_interval=15,
timeout=60 * 15,
)