{Compute} Fix vmss extension set bug#33755
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Pull request overview
Fixes a bug in the VMSS extension update flow where existing extensions weren’t being properly filtered out, leading to duplicate extensions and the service error extension name 'xxx' cannot be used for more than one extension. This is within the vm command module’s implementation of az vmss extension set.
Changes:
- Update the extension de-duplication filter to compare against the correct extension field (
type) when removing an existing extension before adding the new one.
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| extension_profile['extensions'] = \ | ||
| [x for x in extensions if | ||
| x.get('type_properties_type', '').lower() != extension_name.lower() or | ||
| x.get('type', '').lower() != extension_name.lower() or | ||
| x.get('publisher', '').lower() != publisher.lower()] |
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yanzhudd
approved these changes
Jul 21, 2026
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Related command
az vmss extension setDescription
Bug: Same type of extension will be parse together in a list causing
extension name 'xxx' cannot be used for more than one extension.Testing Guide
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