Скачать или смотреть How to Fix the Invalid Query Error When Creating Datadog Monitors with Terraform

Learn how to troubleshoot and fix the `Invalid Query` error in Terraform while setting up Datadog monitors for Google Pub/Sub. Our step-by-step guide simplifies the process for you.
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Understanding the Problem: Invalid Query Error in Datadog Monitor

If you are working with Terraform to set up monitoring for Google Pub/Sub using Datadog, you may encounter an error that states: "Invalid Query." This issue can be frustrating, especially when you’re trying to replicate a working query from another monitor. In this guide, we will delve into the reasons behind this error and offer a clear, step-by-step solution.

The Error Message

When you attempt to create the Datadog monitor, you might see an error message like this:

[[See Video to Reveal this Text or Code Snippet]]

This indicates that there is something wrong with the syntax or structure of your query.

Analyzing the Terraform Code

In your attempt to create a monitor, your Terraform configuration might look like this:

[[See Video to Reveal this Text or Code Snippet]]

In this configuration, the query seems to be missing critical elements that Datadog expects.

The Solution: Updating the Query Syntax

Upon investigation, we found that the error stems from the query syntax used in the Datadog monitor. We can resolve the "Invalid Query" error by making the following updates:

1. Specify a Time Range

Datadog requires you to specify a time frame for your metrics. In typical setups, you might want to monitor averages over the last 30 minutes.

2. Add a Comparison Threshold

Datadog also needs a comparison that aligns with your critical alert thresholds. For instance, if you want an alert when the number of undelivered messages exceeds a certain limit, include that in your query.

Example of the Correct Query

Here’s how you can restructure your query to avoid the invalid error:

[[See Video to Reveal this Text or Code Snippet]]

This revised query includes:

Timeframe: avg(last_30m) which averages the metric over the last 30 minutes.

Comparison: > 2 which sets the critical threshold for the alert.

Summary of Changes

Before: query = "avg:gcp.pubsub.subscription.num_undelivered_messages{project_id:terraform_gcp_test}"

After: query = "avg(last_30m):avg:gcp.pubsub.subscription.num_undelivered_messages{project_id:${var.project_name}} > 2"

Conclusion

Troubleshooting the "Invalid Query" error in Datadog when using Terraform can be straightforward if you break down the requirements of the query structure. By ensuring that you specify both a time range and a proper comparison for your metrics, you can create a robust monitoring solution for Google Pub/Sub.

If you're still facing issues, don't hesitate to refer back to the official Datadog documentation or community resources for more insights!