You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
tailscale/cmd/tailscale/cli/diag.go

75 lines
2.2 KiB
Go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build linux || windows || darwin
package cli
import (
"fmt"
"os/exec"
"path/filepath"
"runtime"
"strings"
ps "github.com/mitchellh/go-ps"
"tailscale.com/version/distro"
)
// fixTailscaledConnectError is called when the local tailscaled has
// been determined unreachable due to the provided origErr value. It
// returns either the same error or a better one to help the user
// understand why tailscaled isn't running for their platform.
func fixTailscaledConnectError(origErr error) error {
procs, err := ps.Processes()
if err != nil {
return fmt.Errorf("failed to connect to local Tailscaled process and failed to enumerate processes while looking for it")
}
var foundProc ps.Process
for _, proc := range procs {
base := filepath.Base(proc.Executable())
if base == "tailscaled" {
foundProc = proc
break
}
if runtime.GOOS == "darwin" && base == "IPNExtension" {
foundProc = proc
break
}
if runtime.GOOS == "windows" && strings.EqualFold(base, "tailscaled.exe") {
foundProc = proc
break
}
}
if foundProc == nil {
switch runtime.GOOS {
case "windows":
return fmt.Errorf("failed to connect to local tailscaled process; is the Tailscale service running?")
case "darwin":
return fmt.Errorf("failed to connect to local Tailscale service; is Tailscale running?")
case "linux":
var hint string
if isSystemdSystem() {
hint = " (sudo systemctl start tailscaled ?)"
}
return fmt.Errorf("failed to connect to local tailscaled; it doesn't appear to be running%s", hint)
}
return fmt.Errorf("failed to connect to local tailscaled process; it doesn't appear to be running")
}
return fmt.Errorf("failed to connect to local tailscaled (which appears to be running as %v, pid %v). Got error: %w", foundProc.Executable(), foundProc.Pid(), origErr)
}
// isSystemdSystem reports whether the current machine uses systemd
// and in particular whether the systemctl command is available.
func isSystemdSystem() bool {
if runtime.GOOS != "linux" {
return false
}
switch distro.Get() {
case distro.QNAP, distro.Gokrazy, distro.Synology, distro.Unraid:
return false
}
_, err := exec.LookPath("systemctl")
return err == nil
}