EC2 Force Terminate Explained! How to Kill Stuck Instances + Troubleshoot Terminations

Force terminate the instance

Use the Amazon EC2 console or the AWS CLI to force terminate the instance. For the steps, see Force terminate an instance.

The instance will first attempt a graceful shutdown, which includes flushing file system caches and metadata (although you can optionally bypass the graceful shutdown). If the graceful shutdown fails to complete within the timeout period, the instance shuts down forcibly without flushing the file system caches and metadata.

AWS CLI
aws ec2 terminate-instances \
--instance-ids i-1234567890abcdef0 \
--force

Feature Launch
https://aws.amazon.com/about-aws/what...

Details
https://docs.aws.amazon.com/AWSEC2/la...

User Data
#!/bin/bash
echo "Simulating a long shutdown..."
sleep 600
shutdown -h now

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