What File to Include with Your Source Code Binaries for EC2/On-Premises Deployment using AWS Code Deploy

Answer - A.

The AWS Documentation mentions the below.

The application specification file (AppSpec file) is a YAML-formatted file used by AWS CodeDeploy to determine:

what it should install onto your instances from your application revision in Amazon S3 or GitHub.

which lifecycle event hooks to run in response to deployment lifecycle events.

An AppSpec file must be named appspec.yml and it must be placed in the root of an application's source code's directory structure.

Otherwise, deployments will fail.

For more information on the appspec file , please visit the below URL:

http://docs.aws.amazon.com/codedeploy/latest/userguide/reference-appspec-file.html

Note: If you deploying your code on AWS Lambda compute platform, An AppSpec file can be YAML-formatted or JSON-formatted.

You can also enter the contents of an AppSpec file directly into AWS CodeDeploy console when you create a deployment.

However, this question is about along with your source code binaries on an EC2/On-Premises Compute Platform.

So, an AppSpec file must be a YAML-formatted file named appspec.yml and it must be placed in the root of the directory structure of an application's source code.

Otherwise, deployments fail.

The correct answer is A. appspec.yml.

When using the AWS CodeDeploy service to deploy an application on EC2 instances or on-premises servers, an appspec.yml file needs to be included along with the source code binaries. This file specifies how the deployment should be executed on the target instances.

The appspec.yml file is a YAML-formatted file that defines the deployment lifecycle events that CodeDeploy will use to deploy the application. The file can contain various sections such as version, os, files, hooks, and permissions.

The version section specifies the version of the appspec file. The os section specifies the operating system on which the deployment will be executed. The files section lists the source code files that will be deployed. The hooks section defines the deployment lifecycle events, such as BeforeInstall, AfterInstall, ApplicationStart, and ApplicationStop, and specifies scripts or commands to be executed during these events. The permissions section specifies the permissions that the deployment needs to execute scripts and access files.

An example appspec.yml file:

yamlCopy code
version: 0.0 os: linux files:   - source: /     destination: /var/www/html/ hooks:   BeforeInstall:     - location: scripts/before_install.sh       runas: root   AfterInstall:     - location: scripts/after_install.sh       runas: root   ApplicationStart:     - location: scripts/start_server.sh       runas: root permissions:   - object: /var/www/html/     pattern: "**"     owner: apache     group: apache     mode: 755 

In this example, the files section specifies that all source code files should be deployed to /var/www/html/ on the target instance. The hooks section specifies scripts to be executed during different deployment events. For example, before_install.sh script will run before the installation process, after_install.sh will run after the installation process is completed, and start_server.sh will run after the application is started. The permissions section sets the ownership and permissions of the /var/www/html/ directory.

In conclusion, the appspec.yml file is a crucial component of the AWS CodeDeploy deployment process, and it is required when deploying applications on EC2 instances or on-premises servers.