subprocess of sudo, accessing /dev/sda : strange error: [Errno 2] No such file or directory

Question

我正在尝试使用此脚本（通过 nagios 用户）智能阅读： https://gist.github.com/mastbaum/10663894#file-smart_watch-py

我确实启用了 nagios 来执行该文件 (/etc/sudoers):

nagios  ALL= NOPASSWD: /git/check_smart/smart_watch.py
#(later on for testing)
nagios  ALL= NOPASSWD: ALL

我很确定我在子进程中获得了 root 权限，似乎没有授予对设备的访问权限：

nagios@x:/dir$ sudo /git/check_smart/smart_watch.py --device /dev/sda
Traceback (most recent call last):
  File "/git/check_smart/smart_watch.py", line 48, in <module>
    main(args.logfile, args.device)
  File "/git/check_smart/smart_watch.py", line 18, in main
    code = check_smart(device)
  File "/git/check_smart/smart_watch.py", line 10, in check_smart
    return subprocess.call(args)
  File "/usr/lib/python2.7/subprocess.py", line 493, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1259, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

$ ls -lahtr /dev/sda
brw-rw---- 1 root disk 8, 0 cze 13 14:55 /dev/sda

命令运行完美执行为root。

知道为什么会出现 "No such file" 错误吗？ 我确实期望权限被拒绝，但不是 /no file/

Answer 1

找到了

命令未找到 smartclt，更改为： /usr/sbin/smartctl