Troubleshooting: Creating and updating an Amazon MWAA environment

Check package versions. We recommend always specifying either a specific version (==) or a maximum version (>=) for the Python dependencies in your requirements.txt.

Check Apache Airflow logs. If you enabled Apache Airflow logs, verify your log groups were created successfully on the Logs groups page on the CloudWatch console. If you see blank logs, the most common reason is due to missing permissions in your execution role for CloudWatch or Amazon S3 where logs are written. To learn more, see Execution role.

Check Apache Airflow configuration options. If you're using Secrets Manager, verify that the key-value pairs you specified as an Apache Airflow configuration option were configured correctly. To learn more, see Configuring an Apache Airflow connection using a Amazon Secrets Manager secret.

Check VPC network configuration. To learn more, see I tried to create an environment and it's stuck in the "Creating" state.

Check execution role permissions. An execution role is an Amazon Identity and Access Management (IAM) role with a permissions policy that grants Amazon MWAA permission to invoke the resources of other Amazon services (such as Amazon S3, CloudWatch, Amazon SQS, Amazon ECR) on your behalf. Your Customer managed key or Amazon owned key also needs to be permitted access. To learn more, see Execution role.

To run a troubleshooting script that checks the Amazon VPC network setup and configuration for your Amazon MWAA environment, see the Verify Environment script in Amazon Support Tools on GitHub.

Follow the steps to Attach a JSON policy to your execution role.

Attach the following JSON policy:

{
   "Effect":"Allow",
   "Action":[
      "s3:GetObject*",
      "s3:GetBucket*",
      "s3:List*"
   ],
   "Resource":[
      "arn:aws:s3:::YOUR_S3_BUCKET_NAME",
      "arn:aws:s3:::YOUR_S3_BUCKET_NAME/*"
   ]
}

Substitute the sample placeholders in YOUR_S3_BUCKET_NAME with your Amazon S3 bucket name, such as my-mwaa-unique-s3-bucket-name.

To run a troubleshooting script that checks the Amazon VPC network setup and configuration for your Amazon MWAA environment, see the Verify Environment script in Amazon Support Tools on GitHub.

Check VPC network with public routing. If you're using an Amazon VPC with Internet access, verify the following:

1. That your Amazon VPC is configured to allow network traffic between the different Amazon resources used by your Amazon MWAA environment, as defined in About networking on Amazon MWAA. For example, your VPC security group must either allow all traffic in a self-referencing rule, or optionally specify the port range for HTTPS port range 443 and a TCP port range 5432.

Check VPC network with private routing. If you're using an Amazon VPC without Internet access, verify the following:

1. That your Amazon VPC is configured to allow network traffic between the different Amazon resources for your Amazon MWAA environment, as defined in About networking on Amazon MWAA. For example, your two private subnets must not have a route table to a NAT gateway (or NAT instance), nor an Internet gateway.

To run a troubleshooting script that checks the Amazon VPC network setup and configuration for your Amazon MWAA environment, see the Verify Environment script in Amazon Support Tools on GitHub.

Check VPC network configuration. To learn more, see I tried to create an environment and it's stuck in the "Creating" state.

Check user permissions. Amazon MWAA performs a dry run against a user's credentials before creating an environment. Your Amazon account may not have permission in Amazon Identity and Access Management (IAM) to create some of the resources for an environment. For example, if you chose the Private network Apache Airflow access mode, your Amazon account must have been granted access by your administrator to the AmazonMWAAFullConsoleAccess access control policy for your environment, which allows your account to create VPC endpoints.

Check execution role permissions. An execution role is an Amazon Identity and Access Management (IAM) role with a permissions policy that grants Amazon MWAA permission to invoke the resources of other Amazon services (such as Amazon S3, CloudWatch, Amazon SQS, Amazon ECR) on your behalf. Your Customer managed key or Amazon owned key also needs to be permitted access. To learn more, see Execution role.

Check Apache Airflow logs. If you enabled Apache Airflow logs, verify your log groups were created successfully on the Logs groups page on the CloudWatch console. If you see blank logs, the most common reason is due to missing permissions in your execution role for CloudWatch or Amazon S3 where logs are written. To learn more, see Execution role.

To run a troubleshooting script that checks the Amazon VPC network setup and configuration for your Amazon MWAA environment, see the Verify Environment script in Amazon Support Tools on GitHub.

If you are using an Amazon VPC without internet access, ensure that you've created an Amazon S3 gateway endpoint, and granted the minimum required permisions to Amazon ECR to access Amazon S3. To learn more about creating an Amazon S3 gateway endpoint, see the following:

Check VPC security group configuration. To learn more, see I tried to create an environment and it's stuck in the "Creating" state.

Confirm that any Apache Airflow packages you listed in the requirements.txt correspond to the Apache Airflow version you're running on Amazon MWAA. To learn more, see Installing Python dependencies.

To run a troubleshooting script that checks the Amazon VPC network setup and configuration for your Amazon MWAA environment, see the Verify Environment script in Amazon Support Tools on GitHub.

Test your DAGs, custom plugins, and Python dependencies locally using the aws-mwaa-local-runner on GitHub.

To run a troubleshooting script that checks the Amazon VPC network setup and configuration for your Amazon MWAA environment, see the Verify Environment script in Amazon Support Tools on GitHub.

Check user permissions. You may not have been granted access to a permissions policy that allows you to view the Apache Airflow UI. To learn more, see Accessing an Amazon MWAA environment.

Check network access. This may be because you selected the Private network access mode. If the URL of your Apache Airflow UI is in the following format 387fbcn-8dh4-9hfj-0dnd-834jhdfb-vpce.c10.us-west-2.airflow.amazonaws.com, it means that you're using private routing for your Apache Airflow Web server. You can either update the Apache Airflow access mode to the Public network access mode, or create a mechanism to access the VPC endpoint for your Apache Airflow Web server. To learn more, see Managing access to service-specific Amazon VPC endpoints on Amazon MWAA.