🪴 Zero's Garden

Unexpected Costs on GCP

3 min read

Cost Analysis

Reports

Group by SKU, exclude “Promotions”-type credits, and sort by Subtotal.

BigQuery

Enable standard usage cost export to BigQuery, and run the following queries.

/* List billing data from yesterday excluding those using discounts */
SELECT *
  FROM
    `<project>.<dataset_name>.gcp_billing_export_v1_***` CROSS JOIN UNNEST(credits) AS credit
  WHERE
    DATE(_PARTITIONTIME) = DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY) AND
    cost > 0 AND
    credit.type <> "DISCOUNT"
  LIMIT 1000;
 
/* List *discounted* SKUs and type of discount on a specific day */
SELECT DISTINCT sku.id, sku.description, credit.type, credit.id, credit.name
  FROM
    `<project>.<dataset_name>.gcp_billing_export_v1_***` CROSS JOIN UNNEST(credits) AS credit
  WHERE
    TIMESTAMP_TRUNC(_PARTITIONTIME, DAY) = TIMESTAMP("2023-11-**") AND
    cost > 0 AND
    credit.type = "DISCOUNT"
  LIMIT 1000;
 
/* Filter for a specific SKU, return original records */
SELECT service, sku, usage_start_time, usage_end_time, cost, credits
  FROM
    `<project>.<dataset_name>.gcp_billing_export_v1_***`
  WHERE
    TIMESTAMP_TRUNC(_PARTITIONTIME, DAY) = TIMESTAMP("2023-11-**") AND
    cost > 0 AND
    sku.id = "CF4E-A0C7-E3BF"
  LIMIT 1000;
 
/* Filter for a specific SKU in a month, return cost per day */
SELECT TIMESTAMP_TRUNC(_PARTITIONTIME, DAY) AS ts, service.description, sku.description, sum(cost) AS cost
  FROM
    `billing-management-400904.all_billing_data.gcp_billing_export_v1_01D2EE_85D75C_0DBFA9`
  WHERE
    TIMESTAMP_TRUNC(_PARTITIONTIME, MONTH) = TIMESTAMP("2023-11-01") AND
    sku.id = "D34A-7997-2D03"
  GROUP BY ts, service.description, sku.description
  HAVING cost > 0
  ORDER BY ts ASC
  LIMIT 1000;

The second query shows discounted costs, including the Free Tier discount.

See https://cloud.google.com/bigquery/docs/reference/standard-sql/operators for more SQL operators supported by BigQuery.

Unexpected Costs

Free Tier

  • Google Kubernetes Engine
    • Zonal Kubernetes Clusters
  • Compute Engine
    • E2 Instance Core running in XXX
    • E2 Instance Ram running in XXX

Compute Engine’s free tier is applied via transactions with negative cost that cancel out the real transactions.

Networking

Private Service Connect (GKE Cluster Endpoint)

  • Networking Private Service Connect Partner Select End Point (6882-BFB0-B7E5)

100% discount for Networking Private Service Connect Partner Select End Point.

  • Networking Service Directory Registered Resource (D34A-7997-2D03), 0.10 USD per month

Access services in another VPC network by using Private Service Connect endpoints. You can connect to your own services, or those provided by other service producers, including by Google.

Run gcloud services enable servicedirectory.googleapis.com to enable the required API to inspect the resource.

Service directory registration by GKE is handled regardless of the status of the API. Service name is gk3-*-pe, type is Private Service Connect, namespace is the default goog-psc-default, and endpoint IP is the internal endpoint, which means it is immutable.

Network Intelligence Center

  • Network Intelligence Center Network Analyzer Resource Hours
  • Network Intelligence Center Internet to Google Cloud Performance Resource Hours
  • Network Intelligence Center Topology and Google Cloud Performance Resource Hours

The Network Topology and Performance Dashboard modules are available to all users for 100% discount. The cost of these modules will be shown in your billing details, but you will not be charged for them. Any changes to the discount structure will be effective with a 90 days prior notice. The updates to the discount rates will appear in your billing information only after you choose to re-enable the modules.

References

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