Can the CDK be used to reboot both RDS and EC2 instances simultaneously?

After diving into using CDK, I am a newcomer to programming.

I have successfully set up a basic environment including an EC2 instance, a VPC with 2 subnets, and an RDS instance. Additionally, I've configured CloudWatch Alarms to monitor the CPU usage of the RDS DB:

      const CPUUsage = new cw.Alarm(this, 'CPUUsage', {
        metric: cpuUsage,
        threshold: 4,
        evaluationPeriods: 2,
        alarmName: 'DB CPU Usage',
      });

My goal is to create alarms that can automatically restart instances (one for EC2 and one for RDS) if their CPU usage exceeds a certain percentage (e.g., 4).

However, I have yet to find a solution to automatically restarting the RDS instance. For the EC2 instance, I came across the InitCommand class, but it doesn't fully meet my requirements as I prefer to avoid using shell commands in the code unless absolutely necessary.

Your assistance on this matter would be greatly appreciated. Thank you!

typescriptamazon-web-servicesamazon-ec2amazon-rdsaws-cdk

Answer №2

CDK does not directly interact with the cloud environment. Instead, it is responsible for generating the CloudFormation template through synthesis. When you execute cdk deploy, the synthesized template is then sent to CloudFormation for execution.

If you require specific functionality to be executed during or after deployment, a more effective approach would involve utilizing a combination of CodePipeline and custom resources to monitor certain conditions and take appropriate actions.

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