Update docs - scripts (kubernetes-sigs#491)

* Update docs - scripts -

* Update docs - scripts -

scripts/README.md

@@ -3,6 +3,10 @@
 | Script Name | Description |
 |-------------|-------------|
 | aws_images_vpc.py | Vpc creation for images building (if no default vpc exists) |
+| ClusterWatch.py | Send mail if EKS clusters are active more then 3 days |
+| delete_oidc.py | Delete OIDC with no clusters associated |
+| delete_unused_ebs.py.py | Delete unused EBS Volumes |
+| delete_unused_epis.py | Delete unused Elastic IPs |
 | upgrade-provisioner.py | Stratio Cloud Provisioner upgrade |
 | upload-images.py | Upload keos images to the cloud-provisioner |
 
@@ -77,4 +81,4 @@ ec2 = session.client('ec2')
         # Remove 'deploy_tigera_operator' property on keos.yaml.
         # Do not copy get-keos-docker-images-list.yml on your home directory.
         # Remove bind_mount_var (variable) and bind mount (volume) on docker run command.
-        # Helm repo: helm-15.0-devel
+        # Helm repo: helm-15.0-devel

scripts/delete_unused_epis.py

@@ -0,0 +1,48 @@
+import boto3
+import logging
+
+logger = logging.getLogger()
+logger.setLevel(logging.INFO)
+
+def read_init_params(event):
+    operating_mode = event.get('operating_mode', 'report_only')
+    actual_deletion = operating_mode == 'actual_deletion'
+    logger.info(f'---- {"EIP deletion" if actual_deletion else "EIP report only"} mode enabled ----')
+    return actual_deletion
+
+def get_unassociated_eips(ec2_client):
+    unassociated_eips = []
+    eips = ec2_client.describe_addresses()['Addresses']
+    for eip in eips:
+        if 'AssociationId' not in eip:
+            unassociated_eips.append({
+                'AllocationId': eip['AllocationId']
+            })
+    return unassociated_eips
+
+def batch_release_addresses(ec2_client, region_name, unassociated_eips, actual_deletion):
+    for elasticip_to_release in unassociated_eips:
+        allocation_id = elasticip_to_release['AllocationId']
+        if actual_deletion:
+            logger.info(f'Releasing unassociated EIP in region {region_name}: {allocation_id}')
+            ec2_client.release_address(AllocationId=allocation_id)
+        else:
+            logger.info(f'Reporting unassociated EIP in region {region_name}: {allocation_id}')
+
+def invoke_eip_cleanup(actual_deletion):
+    ec2 = boto3.client('ec2')
+    regions = ec2.describe_regions()['Regions']
+
+    for region in regions:
+        region_name = region['RegionName']
+        ec2_client = boto3.client('ec2', region_name=region_name)
+        logger.info('--- Checking EIPs in region ---> ' + region_name)
+        unassociated_eips = get_unassociated_eips(ec2_client)
+        if unassociated_eips:
+            batch_release_addresses(ec2_client, region_name, unassociated_eips, actual_deletion)
+        else:
+            logger.info('No unassociated EIPs found in region')
+
+def main(event, context):
+    actual_deletion = read_init_params(event)
+    invoke_eip_cleanup(actual_deletion)