Troubleshooting error: Cannot access an application URL - AWS Mainframe Modernization
Common causeResolution

Troubleshooting error: Cannot access an application URL

This page describes how you can resolve your error when you can't access URL for a running AWS Mainframe Modernization application.

  • Engine: AWS Blu Age and Micro Focus

  • Component: applications

If you can't access the URL for a running AWS Mainframe Modernization application that you created and deployed to an AWS Mainframe Modernization runtime environment, you might need to configure the inbound rules on the security group that you associated with the runtime environment.

Common cause

When you create a runtime environment, the security group you provide, including the default security group, must have inbound rules configured to allow traffic to the deployed applications from outside the VPC, if you want to allow this type of access.

Resolution

Check whether the Amazon VPC security group associated with the runtime environment allows traffic to the environment on the appropriate application ports. To check the security group rules, complete the following steps:

  1. Open the AWS Mainframe Modernization console at https://console.aws.amazon.com/m2/.

  2. In the left navigation, choose Environments.

  3. Choose the runtime environment that hosts the application you want to connect to.

  4. Choose Configurations.

  5. In Security & Network, choose the security group. The link opens the details of the security group in the Amazon VPC console.

  6. If necessary, choose Edit inbound rules and add the following rule if not already present:

    Type

    Custom TCP

    Port

    8196 or the port that matches the listener properties specified in the application definition. For more information, see Step 2: Create the application definition.

    Source

    The IP address from where you are calling the application. You can choose myIP from the dropdown. If you still have timeout issues, try choosing Anywhere IPV4 or Anywhere IPV6. Make sure to stop the application and start it again after you add the inbound rule on the security group.

    For more information, see Work with security group rules in Amazon VPC User Guide.