Required resources for Amazon ECS blue/green deployments
To use a blue/green deployment with managed traffic shifting, your service must use one of the following features:
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Elastic Load Balancing
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Service Connect
Services that don't use Service Discovery, Service Connect, VPC Lattice or Elastic Load Balancing can also use blue/green deployments, but don't get any of the managed traffic shifting benefits.
The following list provides a high-level overview of what you need to configure for Amazon ECS blue/green deployments:
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Your service uses an Application Load Balancer, Network Load Balancer, or Service Connect. Configure the appropriate resources.
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Application Load Balancer - For more information, see Application Load Balancer resources for blue/green deployments.
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Network Load Balancer - For more information, see Network Load Balancer resources for Amazon ECS blue/green deployments.
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Service Connect - For more information, see Service Connect resources for Amazon ECS blue/green deployments.
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Set the service deployment controller to
ECS. -
Configure the deployment strategy as
blue/greenin your service definition. -
Optionally, configure additional parameters such as:
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Bake time for the new deployment
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CloudWatch alarms for automatic rollback
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Deployment lifecycle hooks for testing (these are Lambda functions that run at specified deployment stages)
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Best practices
Follow these best practices for successful Amazon ECS blue/green deployments:
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Configure appropriate health checks that accurately reflect your application's health.
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Set a bake time that allows sufficient testing of the green deployment.
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Implement CloudWatch alarms to automatically detect issues and trigger rollbacks.
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Use lifecycle hooks to perform automated testing at each deployment stage.
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Ensure your application can handle both blue and green environments running simultaneously.
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Plan for sufficient cluster capacity to handle both environments during deployment.
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Test your rollback procedures before implementing them in production.