Google Pub/Sub INVALID_SUBSCRIPTION_NAME error encountered when trying to create or manage a subscription.

The subscription name does not conform to the required format.

Understanding Google Pub/Sub

Google Cloud Pub/Sub is a messaging service designed to provide reliable, many-to-many, asynchronous messaging between applications. It enables developers to send and receive messages between independent applications, ensuring that messages are delivered in a timely and reliable manner. Pub/Sub is often used in event-driven architectures and for decoupling systems, allowing for scalable and flexible application design.

Identifying the Symptom

When working with Google Pub/Sub, you might encounter the INVALID_SUBSCRIPTION_NAME error. This error typically appears when you attempt to create or manage a subscription, and the operation fails due to an improperly formatted subscription name.

What You See

The error message will usually look something like this:

ERROR: (gcloud.pubsub.subscriptions.create) INVALID_ARGUMENT: Invalid subscription name.

This indicates that the subscription name provided does not meet the required format.

Understanding the Issue

The INVALID_SUBSCRIPTION_NAME error occurs because the subscription name does not conform to the expected naming conventions. In Google Pub/Sub, subscription names must follow a specific format to be valid.

Required Format

The correct format for a subscription name is:

projects/{project_id}/subscriptions/{subscription_name}

Here, {project_id} is your Google Cloud project ID, and {subscription_name} is the name you choose for your subscription. The subscription name must be a valid string that adheres to Pub/Sub naming rules.

Steps to Fix the Issue

To resolve the INVALID_SUBSCRIPTION_NAME error, follow these steps:

Step 1: Verify the Subscription Name Format

  • Ensure that your subscription name is prefixed with projects/{project_id}/subscriptions/.
  • Check that the {subscription_name} part is a valid string. It should only contain letters, numbers, dashes, underscores, and periods.
  • The subscription name should not exceed 255 characters.

Step 2: Use the Correct Command

When creating a subscription via the command line, use the following command:

gcloud pubsub subscriptions create projects/{project_id}/subscriptions/{subscription_name} --topic=projects/{project_id}/topics/{topic_name}

Replace {project_id}, {subscription_name}, and {topic_name} with your actual project ID, desired subscription name, and topic name, respectively.

Step 3: Validate with the Google Cloud Console

You can also create and manage subscriptions through the Google Cloud Console. Navigate to the Pub/Sub section, and ensure that your subscription name is correctly formatted when creating a new subscription.

Additional Resources

For more information on naming conventions and best practices, refer to the Google Cloud Pub/Sub Documentation. This resource provides comprehensive guidelines on naming and managing resources in Pub/Sub.

By following these steps and ensuring your subscription names are correctly formatted, you can avoid the INVALID_SUBSCRIPTION_NAME error and successfully manage your Pub/Sub subscriptions.

Master

Google Pub/Sub

in Minutes — Grab the Ultimate Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Real-world configs/examples
Handy troubleshooting shortcuts
Your email is safe with us. No spam, ever.

Thankyou for your submission

We have sent the whitepaper on your email!
Oops! Something went wrong while submitting the form.

Google Pub/Sub

Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Your email is safe with us. No spam, ever.

Thankyou for your submission

We have sent the whitepaper on your email!
Oops! Something went wrong while submitting the form.

MORE ISSUES

Made with ❤️ in Bangalore & San Francisco 🏢

Doctor Droid