{"record":{"id":"05de9a38125ca473","repo":"GoogleContainerTools/skaffold","slug":"sync-failed-for-artifact-q","errorCode":null,"errorMessage":"sync failed for artifact %q","messagePattern":"sync failed for artifact %q","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/skaffold/sync/syncer_mux.go","lineNumber":40,"sourceCode":"\t\"io\"\n\n\t\"github.com/pkg/errors\"\n\n\t\"github.com/GoogleContainerTools/skaffold/v2/pkg/skaffold/output/log\"\n)\n\ntype SyncerMux []Syncer\n\nfunc (s SyncerMux) Sync(ctx context.Context, out io.Writer, item *Item) error {\n\tvar errs []error\n\tfor _, syncer := range s {\n\t\tif err := syncer.Sync(ctx, out, item); err != nil {\n\t\t\terrs = append(errs, err)\n\t\t}\n\t}\n\n\tif len(errs) > 0 {\n\t\terr := fmt.Errorf(\"sync failed for artifact %q\", item.Image)\n\n\t\tfor _, e := range errs {\n\t\t\terr = errors.Wrap(err, e.Error())\n\t\t}\n\n\t\t// Return an error only if all syncers fail\n\t\tif len(errs) == len(s) {\n\t\t\treturn err\n\t\t}\n\n\t\t// Otherwise log the error as a warning\n\t\tlog.Entry(ctx).Warn(err.Error())\n\t}\n\n\treturn nil\n}\n","sourceCodeStart":22,"sourceCodeEnd":57,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/pkg/skaffold/sync/syncer_mux.go#L22-L57","documentation":"Aggregated failure reported by the syncer mux when at least one, and possibly all, of the registered syncers failed to sync the artifact. Each syncer's error is collected and wrapped under this message; per the code comment, an error is returned only when all syncers fail, so seeing it means no syncer succeeded for the artifact.","triggerScenarios":"`mux.Sync` iterates its syncers, any returning errors are appended; when `len(errs) > 0` it builds `fmt.Errorf(\"sync failed for artifact %q\", item.Image)` and wraps every collected error. Triggered when e.g. container sync and pod-based sync both fail for `item.Image`.","commonSituations":"No running pod matches the image (not deployed yet); kubectl exec fails on all pods; file permissions prevent copying into the container; image name mismatch between built artifact and deployed pod.","solutions":["Read the wrapped per-syncer errors to see why each syncer failed","Confirm the artifact was deployed and its image tag matches (`kubectl get pods -o jsonpath='{.items[*].spec.containers[*].image}'`)","Ensure pods are Running and restart sync after redeploy","Check container filesystem permissions/paths in the sync rule (dest)"],"exampleFix":"// before: pod not yet running when sync fires\nskaffold dev  # sync fails for artifact my/image\n// after: wait for deploy, or redeploy\nkubectl rollout status deploy/myapp && skaffold dev","handlingStrategy":"try-catch","validationCode":"// confirm image is deployed before sync\npods, _ := kubeClient.CoreV1().Pods(ns).List(ctx, metav1.ListOptions{FieldSelector: \"status.phase=Running\"})\nfound := false\nfor _, p := range pods.Items {\n    for _, c := range p.Spec.Containers {\n        if c.Image == item.Image { found = true }\n    }\n}\nif !found { return fmt.Errorf(\"image %q not deployed; skip sync\", item.Image) }","typeGuard":"func imageDeployed(pods *corev1.PodList, image string) bool {\n    for _, p := range pods.Items {\n        for _, c := range p.Spec.Containers {\n            if c.Image == image { return true }\n        }\n    }\n    return false\n}","tryCatchPattern":"if err := mux.Sync(ctx, out, item); err != nil {\n    if strings.HasPrefix(err.Error(), \"sync failed for artifact\") {\n        log.Warnf(\"all syncers failed for %s: %v\", item.Image, err)\n        return // or fall back to full rebuild+redeploy\n    }\n}","preventionTips":["Deploy before the first file change so pods exist","Match image names/tags between skaffold.yaml and manifests","Keep dest paths writable inside the container","Redeploy after pod restarts instead of re-syncing"],"tags":["file-sync","kubernetes","artifact"],"backgroundTag":"file-sync-failed","analyzedSha":"a1189de023efc32d4b8e11f395acc678aa555011","analyzedAt":"2026-09-05T12:09:27.064Z","contentChangedAt":"2026-09-05T12:09:27.064Z","schemaVersion":2},"datasetVersion":"2026-09-12T17:17:11.597Z"}