Created
November 5, 2020 02:06
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Detach EC2 from ASG for SPOT interruptions events
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| import boto3 | |
| def lambda_handler(event, context): | |
| instanceId = event['detail']['instance-id'] | |
| asgName = 'xxx' | |
| ec2client = boto3.client('ec2') | |
| describeTags = ec2client.describe_tags(Filters=[{'Name': 'resource-id','Values':[instanceId]}]) | |
| for tag in describeTags['Tags']: | |
| if tag['Key'] == 'aws:autoscaling:groupName': | |
| asgName = tag['Value'] | |
| asgclient = boto3.client('autoscaling') | |
| asgclient.detach_instances( | |
| InstanceIds=[ | |
| instanceId, | |
| ], | |
| AutoScalingGroupName=asgName, | |
| ShouldDecrementDesiredCapacity=False | |
| ) | |
| print("Detaching success instance", instanceId, " from ASG: ", asgName) |
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