{"record":{"id":"ca1a3a1ff92f9387","repo":"kubernetes/kops","slug":"creating-updating-subnet-w","errorCode":null,"errorMessage":"creating/updating subnet: %w","messagePattern":"creating/updating subnet: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"upup/pkg/fi/cloudup/azure/subnet.go","lineNumber":43,"sourceCode":")\n\n// SubnetsClient is a client for managing subnets.\ntype SubnetsClient interface {\n\tCreateOrUpdate(ctx context.Context, resourceGroupName, virtualNetworkName, subnetName string, parameters network.Subnet) (*network.Subnet, error)\n\tList(ctx context.Context, resourceGroupName, virtualNetworkName string) ([]*network.Subnet, error)\n\tDelete(ctx context.Context, resourceGroupName, vnetName, subnetName string) error\n}\n\ntype subnetsClientImpl struct {\n\tc *network.SubnetsClient\n}\n\nvar _ SubnetsClient = (*subnetsClientImpl)(nil)\n\nfunc (c *subnetsClientImpl) CreateOrUpdate(ctx context.Context, resourceGroupName, virtualNetworkName, subnetName string, parameters network.Subnet) (*network.Subnet, error) {\n\tfuture, err := c.c.BeginCreateOrUpdate(ctx, resourceGroupName, virtualNetworkName, subnetName, parameters, nil)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"creating/updating subnet: %w\", err)\n\t}\n\tresp, err := future.PollUntilDone(ctx, nil)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"waiting for subnet create/update completion: %w\", err)\n\t}\n\treturn &resp.Subnet, err\n}\n\nfunc (c *subnetsClientImpl) List(ctx context.Context, resourceGroupName, virtualNetworkName string) ([]*network.Subnet, error) {\n\tvar l []*network.Subnet\n\tpager := c.c.NewListPager(resourceGroupName, virtualNetworkName, nil)\n\tfor pager.More() {\n\t\tresp, err := pager.NextPage(ctx)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"listing subnets: %w\", err)\n\t\t}\n\t\tl = append(l, resp.Value...)\n\t}","sourceCodeStart":25,"sourceCodeEnd":61,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/upup/pkg/fi/cloudup/azure/subnet.go#L25-L61","documentation":"BeginCreateOrUpdate for the subnet failed to start the LRO; fires on ARM validation errors (bad address prefix or delegation), conflicts with existing subnets, or authorization failures.","triggerScenarios":"Thrown at upup/pkg/fi/cloudup/azure/subnet.go:43 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Inspect the wrapped ResponseError code and fix address prefixes/delegations","Verify Network Contributor permissions on the virtual network","Retry after transient ARM failures"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4c8573c808a73d578c5eadc86d410646ea0b0d73","analyzedAt":"2026-09-05T04:13:19.212Z","contentChangedAt":"2026-09-05T04:13:19.212Z","schemaVersion":2},"datasetVersion":"2026-09-12T07:17:12.445Z"}