flipped-aurora/gin-vue-admin · error

停用 MCP 独立服务失败: %w

Error message

停用 MCP 独立服务失败: %w

What it means

Thrown by StopManagedStandalone when terminateProcess(meta.PID) fails to signal/kill the managed MCP standalone process. The manager knows the recorded PID exists but could not terminate it (e.g. permission or already-reaped edge cases).

Source

Thrown at server/mcp/standalone_manager.go:212

		return GetManagedStandaloneStatus(context.Background()), err
	}

	return waitForManagedProcess(ctx, meta)
}

func StopManagedStandalone(ctx context.Context) (ManagedStandaloneStatus, error) {
	meta, err := readManagedProcessMeta()
	if err != nil {
		status := GetManagedStandaloneStatus(ctx)
		if status.Reachable {
			return status, errors.New("当前 MCP 服务不是由页面启动的，无法自动停用")
		}
		return status, nil
	}

	if meta.PID > 0 && processExists(meta.PID) {
		if err := terminateProcess(meta.PID); err != nil {
			return GetManagedStandaloneStatus(context.Background()), fmt.Errorf("停用 MCP 独立服务失败: %w", err)
		}
	}

	deadline := time.NewTimer(mcpStopWaitTimeout)
	ticker := time.NewTicker(200 * time.Millisecond)
	defer deadline.Stop()
	defer ticker.Stop()

	for {
		select {
		case <-ctx.Done():
			return GetManagedStandaloneStatus(context.Background()), ctx.Err()
		case <-deadline.C:
			_ = removeManagedProcessMeta()
			return GetManagedStandaloneStatus(context.Background()), nil
		case <-ticker.C:
			if meta.PID <= 0 || !processExists(meta.PID) {
				_ = removeManagedProcessMeta()

View on GitHub (pinned to 3136500ef3)

Solutions

1. Check the wrapped cause: 'operation not permitted' usually means ownership mismatch — stop the process as the same user that started it.
2. Kill the PID manually (kill <pid>) and re-run StopManagedStandalone; the manager reconciles status via GetManagedStandaloneStatus.
3. Delete/clean stale managed-process metadata if the PID was reused, then start fresh.
4. Verify in the log file whether the process is actually healthy/running and what it is doing (stuck children may need process-group kill).

// confirm we can signal the PID before attempting stop
if err := syscall.Kill(meta.PID, 0); err != nil {
    return fmt.Errorf("cannot signal pid %d as this user: %w", meta.PID, err)
}

status, err := StopManagedStandalone(ctx)
if err != nil && strings.Contains(err.Error(), "operation not permitted") {
    // fallback: escalate or ask the owning user to stop it
    log.Printf("manual intervention required for pid %d", meta.PID)
}

When it happens

Trigger: Stopping the managed standalone while terminateProcess returns an error: process owned by another user (started under different identity), PID reused by an unrelated process the caller cannot signal, or the kill syscall fails for OS reasons.

Common situations: MCP process was started by a different user or via sudo; container restricts signals across PIDs; stale meta with a recycled PID; Windows/Linux permission differences.

Related errors

• 启动 MCP 独立服务失败: %w
• 未找到 MCP 独立配置文件，请在当前目录、cmd/mcp 目录或通过 -config / GVA_MCP_CONFIG
• 未能自动识别项目根目录，请在 MCP 配置中设置 autocode.root
• go.mod 中未找到 module 定义
• path 参数是必需的

AI-assisted analysis of flipped-aurora/gin-vue-admin@3136500ef3 (2026-08-31). Data as JSON: /api/errors/b732cce91c423968. Report an issue: GitHub.