Chapter 6

1. The cfn-init helper script processes these configuration sections in the following order: packages, groups, users, sources, files, commands, and then services.
2. Yes, and it is recommended to do so for complex configurations or to run configuration items in a different order.
3. No. Only one configuration set can be provided.
4. Not using the files directive in the config set. You will have to use the commands directive, but it is possible to add a missing directory to the full path of the file, and cfn-init will automatically create it (similar to the mkdir -p command).
5. WaitCondition is a CloudFormation resource that is used to make CloudFormation wait for resource completion. For example, you can use WaitCondition with cfn-signal to make CloudFormation inform the users about resource creation only when cfn-init has finished running.