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Pull request overview
Migrates the az vmss diagnostics command group (set / get-default-config) from the mgmt.compute SDK-backed command group registration to an AAZ-based registration, and updates the VMSS diagnostics extension setter to fetch VMSS via AAZ.
Changes:
- Register
vmss diagnosticswithout thecompute_vmss_sdkcommand type (AAZ migration pattern). - Update
set_vmss_diagnostics_extensionto retrieve VMSS viaget_vmss_by_aazand use_is_linux_os_aazfor OS detection.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
src/azure-cli/azure/cli/command_modules/vm/custom.py |
Switch VMSS retrieval to AAZ and adjust VMSS dict access paths for diagnostics extension logic. |
src/azure-cli/azure/cli/command_modules/vm/commands.py |
Move vmss diagnostics command group registration off the SDK command type to support AAZ-based implementation. |
Comments suppressed due to low confidence (1)
src/azure-cli/azure/cli/command_modules/vm/custom.py:5120
extscomes fromVMSSShow(AAZ) and is a list of dicts, but the incompatibility check uses attribute access (e.name,e.type_handler_version). This will raiseAttributeErrorat runtime and the check will never work. Update the predicate to use dict keys (e.g.e.get('name')ande.get('typeHandlerVersion')for the camelCase VMSSShow output, or convert to snake_case first and then usetype_handler_version).
major_ver = extension_mappings[_LINUX_DIAG_EXT]['version'].split('.', maxsplit=1)[0]
# For VMSS, we don't do auto-removal like VM because there is no reliable API to wait for
# the removal done before we can install the newer one
if next((e for e in exts if e.name == _LINUX_DIAG_EXT and
not e.type_handler_version.startswith(major_ver + '.')), None):
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| result = LongRunningOperation(cmd.cli_ctx)(poller) | ||
| UpgradeMode = cmd.get_models('UpgradeMode') | ||
| if vmss.upgrade_policy.mode == UpgradeMode.manual: | ||
| if vmss.get('upgradePolicy', {}).get('upgradePolicy') == UpgradeMode.MANUAL.value: |
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The manual upgrade policy check is using vmss.get('upgradePolicy', {}).get('upgradePolicy'), but the VMSS model has upgradePolicy.mode (and this file already uses .get('mode') elsewhere). As written, this condition will never be true, so instances won’t be updated for manual upgrade mode. Use vmss.get('upgradePolicy', {}).get('mode') == UpgradeMode.MANUAL.value (camelCase output) instead.
Suggested change
| if vmss.get('upgradePolicy', {}).get('upgradePolicy') == UpgradeMode.MANUAL.value: | |
| if vmss.get('upgradePolicy', {}).get('mode') == UpgradeMode.MANUAL.value: |
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/azp run |
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Azure Pipelines successfully started running 3 pipeline(s). |
JaysonTaiMicrosoft
approved these changes
Apr 7, 2026
JaysonTaiMicrosoft
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Looks good to me 👍 Would be a good idea for one of the other code owners to also take a look.
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/azp run |
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Azure Pipelines successfully started running 3 pipeline(s). |
yanzhudd
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Apr 8, 2026
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Related command
az vmss diagnostics setaz vmss diagnostics get-default-configDescription
Migration from mgmt.compute to aaz-based
Testing Guide
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