{"record":{"id":"42cc494e499e0df0","repo":"kubernetes/kops","slug":"error-building-tasks-v","errorCode":null,"errorMessage":"error building tasks: %v","messagePattern":"error building tasks: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"upup/pkg/fi/cloudup/apply_cluster.go","lineNumber":740,"sourceCode":"\t\tcase kops.CloudProviderLinode:\n\t\t\tlinodeModelContext := &linodemodel.LinodeModelContext{\n\t\t\t\tKopsModelContext: modelContext,\n\t\t\t}\n\t\t\tl.Builders = append(l.Builders,\n\t\t\t\t&linodemodel.NetworkModelBuilder{LinodeModelContext: linodeModelContext, Lifecycle: networkLifecycle},\n\t\t\t\t&linodemodel.InstanceModelBuilder{LinodeModelContext: linodeModelContext, BootstrapScriptBuilder: bootstrapScriptBuilder, Lifecycle: clusterLifecycle, SSHKeyLifecycle: securityLifecycle},\n\t\t\t)\n\n\t\tcase kops.CloudProviderMetal:\n\t\t\t// No special builders for bare metal (yet)\n\n\t\tdefault:\n\t\t\treturn nil, fmt.Errorf(\"unknown cloudprovider %q\", cluster.GetCloudProvider())\n\t\t}\n\t}\n\tc.TaskMap, err = l.BuildTasks(ctx, c.LifecycleOverrides)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"error building tasks: %v\", err)\n\t}\n\n\tvar target fi.CloudupTarget\n\tshouldPrecreateDNS := true\n\n\tdeletionProcessingMode := c.DeletionProcessing\n\tswitch c.TargetName {\n\tcase TargetDirect:\n\t\tswitch cluster.GetCloudProvider() {\n\t\tcase kops.CloudProviderGCE:\n\t\t\ttarget = gce.NewGCEAPITarget(cloud.(gce.GCECloud))\n\t\tcase kops.CloudProviderAWS:\n\t\t\ttarget = awsup.NewAWSAPITarget(cloud.(awsup.AWSCloud))\n\t\tcase kops.CloudProviderDO:\n\t\t\ttarget = do.NewDOAPITarget(cloud.(do.DOCloud))\n\t\tcase kops.CloudProviderHetzner:\n\t\t\ttarget = hetzner.NewHetznerAPITarget(cloud.(hetzner.HetznerCloud))\n\t\tcase kops.CloudProviderOpenstack:","sourceCodeStart":722,"sourceCodeEnd":758,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/upup/pkg/fi/cloudup/apply_cluster.go#L722-L758","documentation":"Run calls l.BuildTasks(ctx, c.LifecycleOverrides) to construct the full task map (the dependency graph of cloud resources). Any failure inside task construction is wrapped as 'error building tasks'. This is a wrapper around deeper errors — the underlying cause (bad spec field, asset problem, template issue) is in the wrapped %v.","triggerScenarios":"`kops update cluster` where a builder produced tasks referencing invalid data — e.g. malformed cluster spec, missing AMI/asset, or a builder returning an error.","commonSituations":"Invalid instance group or cluster spec values that only surface during task building; asset-builder failures with custom assets; bugs after kOps upgrades changing task contracts.","solutions":["Read the full error output — the inner wrapped error names the actual failing task/field","Validate the spec: `kops validate cluster` or inspect `kops get ig -o yaml` for bad values","Try a newer/older kOps version if this started after an upgrade; file an issue with the inner error if it looks like a bug"],"exampleFix":"// inspect the real cause\nkops update cluster --name x --v=10 2>&1 | grep -A5 'error building tasks'\n// fix the inner issue, e.g. bad zone in instance group, then rerun","handlingStrategy":"try-catch","validationCode":"kops get cluster \"$NAME\" -o yaml && kops get ig --name \"$NAME\" -o yaml  # eyeball spec fields before apply","typeGuard":null,"tryCatchPattern":"taskMap, err := l.BuildTasks(ctx, overrides); if err != nil { log.Errorf(\"task build failed, inner cause: %v\", errors.Unwrap(err)); return err }","preventionTips":["Always read the inner wrapped error — this message is only a wrapper","Validate cluster/instance-group specs after edits before applying","Increase verbosity (--v=5+) to locate the failing builder/task","Test spec changes with --target=terraform first (dry-run style)"],"tags":["tasks","builder","apply"],"backgroundTag":"task-build-failed","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"}