kubernetes/kops · error

error creating ManagedFile %q: %v

Error message

error creating ManagedFile %q: %v

What it means

After computing the destination path and ACL, Render writes the file contents with p.WriteFile. Any write failure from the VFS backend is wrapped as "error creating ManagedFile" including the target location.

Source

Thrown at upup/pkg/fi/fitasks/managedfile.go:181

	data, err := fi.ResourceAsBytes(e.Contents)
	if err != nil {
		return fmt.Errorf("error reading contents of ManagedFile: %v", err)
	}

	p, err := getBasePath(c, e)
	if err != nil {
		return err
	}
	p = p.Join(location)

	acl, err := e.getACL(c, p)
	if err != nil {
		return err
	}

	err = p.WriteFile(ctx, bytes.NewReader(data), acl)
	if err != nil {
		return fmt.Errorf("error creating ManagedFile %q: %v", location, err)
	}

	return nil
}

func getBasePath(c *fi.CloudupContext, e *ManagedFile) (vfs.Path, error) {
	base := fi.ValueOf(e.Base)
	if base != "" {
		p, err := vfs.Context.BuildVfsPath(base)
		if err != nil {
			return nil, fmt.Errorf("error parsing ManagedFile Base %q: %v", base, err)
		}
		return p, nil
	}

	return c.T.ClusterConfigBase, nil
}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Read the wrapped %v error to identify the backend failure (auth, permission, network).
2. Verify cloud credentials and IAM permissions for writing to the state-store path.
3. Confirm the bucket/container exists and is writable, then re-run kops update cluster.
4. Check network/proxy connectivity to the storage endpoint.

// preflight: verify write access to base path
probe := basePath.Join(".kops-probe")
if err := probe.WriteFile(ctx, strings.NewReader("probe"), nil); err != nil { return err }

var werr error
for i := 0; i < 3; i++ {
    if werr = p.WriteFile(ctx, bytes.NewReader(data), acl); werr == nil { break }
    time.Sleep(time.Duration(i+1) * time.Second)
}

When it happens

Trigger: p.WriteFile(ctx, reader, acl) fails — e.g. the bucket/object store is unreachable, credentials lack write permission, or the bucket does not exist.

Common situations: Expired cloud credentials, missing s3:PutObject permission, wrong region, or a state-store bucket deleted/moved since the last apply.

Related errors

• error reading contents of ManagedFile: %v
• error writing Cluster %q: %v
• error writing Cluster: %v
• error listing children of %s: %v
• reading file: %w

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/b21dcb9a2da9b9a1. Report an issue: GitHub.