GSP092

You can view your Cloud Functions with their execution times, execution counts, and memory usage in the Cloud Console using Cloud Monitoring, where you can set up custom alerting on these metrics.

Setup and requirements

Before you click the Start Lab button

Read these instructions. Labs are timed and you cannot pause them. The timer, which starts when you click Start Lab, shows how long Google Cloud resources will be made available to you.

This hands-on lab lets you do the lab activities yourself in a real cloud environment, not in a simulation or demo environment. It does so by giving you new, temporary credentials that you use to sign in and access Google Cloud for the duration of the lab.

To complete this lab, you need:

• Access to a standard internet browser (Chrome browser recommended).

__Note:__ Use an Incognito or private browser window to run this lab. This prevents any conflicts between your personal account and the Student account, which may cause extra charges incurred to your personal account.

• Time to complete the lab---remember, once you start, you cannot pause a lab.

__Note:__ If you already have your own personal Google Cloud account or project, do not use it for this lab to avoid extra charges to your account.

How to start your lab and sign in to the Google Cloud Console

1. Click the Start Lab button. If you need to pay for the lab, a pop-up opens for you to select your payment method. On the left is a panel populated with the temporary credentials that you must use for this lab.

   

2. Copy the username, and then click Open Google Console. The lab spins up resources, and then opens another tab that shows the Sign in page.

   

   Tip: Open the tabs in separate windows, side-by-side.

3. In the Sign in page, paste the username that you copied from the left panel. Then copy and paste the password.

   Important: You must use the credentials from the left panel. Do not use your Google Cloud Training credentials. If you have your own Google Cloud account, do not use it for this lab (avoids incurring charges).

4. Click through the subsequent pages:

   • Accept the terms and conditions.
   • Do not add recovery options or two-factor authentication (because this is a temporary account).
   • Do not sign up for free trials.

After a few moments, the Cloud Console opens in this tab.

Activate Cloud Shell

Cloud Shell is a virtual machine that is loaded with development tools. It offers a persistent 5GB home directory and runs on the Google Cloud. Cloud Shell provides command-line access to your Google Cloud resources.

In the Cloud Console, in the top right toolbar, click the Activate Cloud Shell button.

Click Continue.

It takes a few moments to provision and connect to the environment. When you are connected, you are already authenticated, and the project is set to your PROJECT_ID. For example:

gcloud is the command-line tool for Google Cloud. It comes pre-installed on Cloud Shell and supports tab-completion.

You can list the active account name with this command:

gcloud auth list

(Output)

ACTIVE: * ACCOUNT: student-01-xxxxxxxxxxxx@qwiklabs.net To set the active account, run: $ gcloud config set account `ACCOUNT`

You can list the project ID with this command:

gcloud config list project

(Output)

[core] project = <project_ID>

(Example output)

[core] project = qwiklabs-gcp-44776a13dea667a6

Viewing Cloud Function logs & metrics in Cloud monitoring

Before you collect logs and alerts, you need something to monitor. In this section, you create a Hello World cloud function to monitor.

1. In the Cloud Console, select Navigation menu > Cloud Functions, and then CREATE FUNCTION.

2. Set the following:

• Function Name: helloWorld
• Trigger type: HTTP
• Authentication: check the box next to Allow unauthenticated invocations

Click SAVE.

3. Expand Runtime, build, connections and security settings. Under Autoscaling, set the Maximum number of instances to 5. Click NEXT.

4. You will see the following:

5. Click DEPLOY.

The cloud function automatically deploys and is listed on the Cloud Function page. This takes a few minutes. When you see a green check mark next to the name, the cloud function is complete.

Test Completed Task

Click Check my progress to verify your performed task. If you have completed the task successfully you will be granted with an assessment score.

Creating a Cloud Function

6. In Cloud Shell, run the following to get a tool called vegeta that will let you send some test traffic to your cloud function:

curl -LO 'https://github.com/tsenart/vegeta/releases/download/v6.3.0/vegeta-v6.3.0-linux-386.tar.gz'

7. Unpack the vegeta tool by running the following:

tar xvzf vegeta-v6.3.0-linux-386.tar.gz

8. Still in the Cloud Functions page, click the name of your function, and then click on the Trigger tab. Click the Trigger URL for your function.

If you see Hello World! in the new browser tab that opens, you're up and running!

9. Now send traffic to your cloud function. Run the following in Cloud Shell, replacing <YOUR_PROJECT_ID> with your Project ID and qwiklabsDemo with your function name.

echo "GET https://us-central1-<YOUR_PROJECT_ID>.cloudfunctions.net/qwiklabsDemo" | ./vegeta attack -duration=300s > results.bin

Create logs-based metric

Now you'll create a Distribution type logs based metric using a regular expression to extract the value of latency from the log entries textPayload field.

1. In the Console, select Navigation menu > Logging > Logs Explorer. The Cloud Logging opens in the Console.

2. To look at just the logs from your Cloud Function, in the Resource dropdown, select Cloud Function > helloWorld then click Add. In the Log name dropdown, select cloud-functions checkbox then click Add.

3. Click Run query.

4. Click Create metric.

5. In the Create logs metric:

• Change the Metric Type to Distribution.

• Name your metric CloudFunctionLatency-Logs.

• Enter textPayload for Field name.

• Enter the following in the Regular Expression field.

execution took (\d+)

The Create logs metric should look like this:

6. Click CREATE METRIC.

Now you'll see your user-defined metric added to your Logs-based Metrics page.

Test Completed Task

Click Check my progress to verify your performed task. If you have completed the task successfully you will be granted with an assessment score.

Create logs-based metric

Metrics Explorer

Next, use Metrics Explorer to look at the data for your cloud function.

Create a Monitoring Metrics Scope

Now set up a Monitoring Metrics Scope that's tied to your Google Cloud Project. The following steps create a new account that has a free trial of Monitoring.

1. In the Cloud Console, click Navigation menu > Monitoring.

2. When the Monitoring Overview page opens, your metrics scope project is ready.

3. In the left menu, click Metrics explorer.

4. Start typing executions into the Select a Metric dropdown, and then select Cloud Function > Function > Executions from the suggested metrics and click Apply.

5. Change the graph type to Stacked bar chart using the dropdown menu above the graph.

6. Explore other graph options, try a different metric. For example, click the X next to the Metric, select Execution times, and change the graph type to Heatmap chart.

7. Continue to explore and experiment. For example, go back to the Executions metric and change the aggregator to the 95th percentile. Select the graph type Line.

Create charts on the Monitoring Overview window

Creating charts on the Monitoring Overview window is a great way to track metrics that are important to you. In this section, you set up the same charts you created in the previous section, but now they'll be saved into the Monitoring Overview window.

1. In the left menu, click Dashboard.

2. Click on + CREATE DASHBOARD.

3. Click on + ADD CHART.

4. In dropdown menu, select Stacked bar

Note: If the Add chart option is greyed out then delete existing charts from the overview page.

5. Choose the Resource type and Metric you used for the first chart in the last section, and then click SAVE.

6. After you create the first chart, click + ADD CHART to create the next one, using the same metric you use for the second chart in the last section. Click SAVE.

By default, the charts name themselves after the metric you're using, but you can rename them.

For a quick reference, you can see these charts in the Monitoring Dashboard section.

Test your Understanding

Below are multiple-choice questions to reinforce your understanding of this lab's concepts. Answer them to the best of your abilities.

Congratulations!

Finish Your Quest

This self-paced lab is part of the Google Cloud's Operations Suite and Cloud Logging Quests. A Quest is a series of related labs that form a learning path. Completing a Quest earns you the badge above, to recognize your achievement. You can make your badge (or badges) public and link to them in your online resume or social media account. Enroll in either Quest and get immediate completion credit if you've taken this lab. See other available Quests.

Take Your Next Lab

Continue your Quest with Autoscaling an Instance Group with Custom Cloud Monitoring Metrics, or check out these suggestions:

• Cloud Monitoring: Qwik Start
• Monitoring Multiple Projects with Cloud Monitoring

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Manual Last Updated April 27, 2022

Lab Last Tested April 27, 2022

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