How can these requirements be met with the LEAST management overhead and without requiring different script versions for each deployment group?
Tag the Amazon EC2 instances depending on the deployment group. Then place a script into the application revision that calls the metadata service and the EC2 API to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference the script as part of the AfterInstall lifecycle hook in the appspec.yml file.
Create a script that uses the CodeDeploy environment variable DEPLOYMENT_GROUP_ NAME to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference this script as part of the BeforeInstall lifecycle hook in the appspec.yml file.
Create a CodeDeploy custom environment variable for each environment. Then place a script into the application revision that checks this environment variable to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference this script as part of the ValidateService lifecycle hook in the appspec.yml file.
Create a script that uses the CodeDeploy environment variable DEPLOYMENT_GROUP_ID to identify which deployment group the instance is part of to configure the log level settings. Reference this script as part of the Install lifecycle hook in the appspec.yml file.
Explanations:
While tagging EC2 instances can be useful, it introduces additional complexity and management overhead by requiring a script to call the metadata service and EC2 API to identify the deployment group. This approach does not leverage built-in CodeDeploy features that simplify deployment configurations.
This option efficiently uses the CodeDeploy environment variableDEPLOYMENT_GROUP_NAME, which is automatically available during deployments. By configuring log levels in a script referenced in theBeforeInstalllifecycle hook, the development team can easily adjust log levels based on the deployment group with minimal management overhead and without needing different script versions.
Creating custom environment variables for each environment adds unnecessary complexity and management overhead. It would require additional setup in CodeDeploy and does not utilize the built-in environment variables provided by CodeDeploy, which would be simpler and more efficient.
UsingDEPLOYMENT_GROUP_IDis not the most suitable approach since it does not provide a direct reference to the deployment group name, which is more meaningful for configuration purposes. Additionally, using it in theInstalllifecycle hook may not be the best time to configure log settings, as it is preferable to do so earlier in the deployment process.
As I understand it, the answer is:
Create a script that uses the CodeDeploy environment variable DEPLOYMENT_GROUP_ NAME to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference this script as part of the BeforeInstall lifecycle hook in the appspec.yml file.