Request-based auto scaling in GCP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the target CPU utilization for auto scaling.

GCP

autoscaler = compute_v1.Autoscaler()
autoscaler.autoscaling_policy = compute_v1.AutoscalingPolicy(
    cpu_utilization=compute_v1.AutoscalingPolicyCpuUtilization(
        utilization_target=[1]
    )
)

Drag options to blanks, or click blank then click option'

A0.4

B0.6

C1.0

D0.8

Attempts:

3 left

💡 Hint

Common Mistakes

Using values greater than 1.0 which is invalid.

Setting too low a target causing frequent scaling.

The target CPU utilization is set to 0.8 (80%) to trigger scaling when CPU usage exceeds this threshold.

2fill in blank

medium

Complete the code to set the minimum number of instances for the autoscaler.

GCP

autoscaler.autoscaling_policy.min_num_replicas = [1]

Drag options to blanks, or click blank then click option'

A1

B0

C5

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Setting minimum replicas to 0 causing no instances to run.

Setting too high minimum causing unnecessary cost.

Setting min_num_replicas to 1 ensures at least one instance is always running.

3fill in blank

hard

Fix the error in the autoscaler configuration by completing the blank.

GCP

autoscaler.autoscaling_policy.max_num_replicas = [1]

Drag options to blanks, or click blank then click option'

A1000

B0

C10

D-1

Attempts:

3 left

💡 Hint

Common Mistakes

Using negative or zero values for max replicas.

Setting max replicas too high causing cost spikes.

max_num_replicas must be a positive integer greater than or equal to min_num_replicas. 10 is a reasonable max.

4fill in blank

hard

Fill both blanks to configure the autoscaler to scale based on request count per instance.

GCP

autoscaler.autoscaling_policy = compute_v1.AutoscalingPolicy(
    custom_metric_utilizations=[compute_v1.AutoscalingPolicyCustomMetricUtilization(
        metric=[1],
        utilization_target=[2]
    )]
)

Drag options to blanks, or click blank then click option'

A"custom.googleapis.com/request_count"

B1000

C0.8

D"compute.googleapis.com/instance/cpu/utilization"

Attempts:

3 left

💡 Hint

Common Mistakes

Using CPU utilization metric instead of request count.

Setting utilization target as a decimal instead of a count.

The metric for request count is "custom.googleapis.com/request_count" and the target utilization is set to 1000 requests per instance.

5fill in blank

hard

Fill all three blanks to create an autoscaler with a request count metric and set min and max replicas.

GCP

autoscaler.autoscaling_policy = compute_v1.AutoscalingPolicy(
    min_num_replicas=[1],
    max_num_replicas=[2],
    custom_metric_utilizations=[compute_v1.AutoscalingPolicyCustomMetricUtilization(
        metric=[3],
        utilization_target=500
    )]
)

Drag options to blanks, or click blank then click option'

A1

B10

C"custom.googleapis.com/request_count"

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Setting min replicas higher than max replicas.

Using wrong metric string for custom metric.

Minimum replicas set to 1, maximum to 10, and custom metric for request count with target 500 requests per instance.