This repo is part of the ECS Tasks Scaling POC, which contains an API Gateway + Lambda + ECS stack in account 2.
The first Lambda is to update the ECS tasks size, and the API Gateway calls the second Lambda to check if the ECS tasks size has been updated.
Please see SNSForECSScaling repo for SNS in account 1.
This architecture does not enable auto scaling for ECS. We use boto3 ECS.update_service API to update the ECS tasks size.
With auto scaling enabled, we can disable scale in while manually updating the ECS tasks size.
Use the update_scaling_plan API to set DisableScaleIn as True, and set DisableScaleIn as False when scale down to original size.
The cdk.json file tells the CDK Toolkit how to execute your app.
This project is set up like a standard Python project. The initialization
process also creates a virtualenv within this project, stored under the .venv
directory. To create the virtualenv it assumes that there is a python3
(or python for Windows) executable in your path with access to the venv
package. If for any reason the automatic creation of the virtualenv fails,
you can create the virtualenv manually.
To manually create a virtualenv on MacOS and Linux:
$ python3 -m venv .venv
After the init process completes and the virtualenv is created, you can use the following step to activate your virtualenv.
$ source .venv/bin/activate
If you are a Windows platform, you would activate the virtualenv like this:
% .venv\Scripts\activate.bat
Once the virtualenv is activated, you can install the required dependencies.
$ pip install -r requirements.txt
At this point you can now synthesize the CloudFormation template for this code.
$ cdk synth
Then, you can deploy your cdk.
$ cdk deploy