GKE spot instance launches fail due to InstanceTaxonomies incompatibility

Title

You may see an InstanceTaxonomies error when Flexera attempts to launch new GKE spot instances. This issue occurs when the selected machine family is not compatible with the configured boot disk type. When this mismatch exists, Google Cloud blocks instance creation and scaling cannot proceed.

The troubleshooting steps below help you identify the incompatibility and adjust your configuration so instance launches succeed.

Solution

When Flexera tries to create a new spot instance, the following error may appear:
- ERROR, Can't Spin Instance Code: Error Message: [pd-standard] features and [instance_type: VIRTUAL_MACHINE family: COMPUTE_OPTIMIZED generation: GEN_3 cpu_vendor: INTEL architecture: X86_64] InstanceTaxonomies are not compatible for creating instance.
Validate machine family and disk compatibility
This error means the selected machine family does not support the configured boot disk type. Compare the machine family you are using with the boot disk type, such as pd-standard. Some compute optimized machine families require a different persistent disk type.

Decide which option best fits your workload:
- Change the machine family to one that supports the current disk type.
- Change the boot disk type to one that is compatible with the selected machine family.
Update the allowed instance configuration
If an incompatible machine family or instance type is included in your allowlist, remove it to prevent future launch attempts that will fail.
Engage Flexera Support for validation
If you are unsure which machine family or disk type to use, contact Flexera Support. Support can help validate the selected instance types and ensure only compatible options remain in the allowlist.

Outcome

After aligning the machine family and boot disk type, Flexera can successfully launch new GKE spot instances and scaling resumes without InstanceTaxonomies errors.

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Case id: 00001065