Salt 无法使用管道或重定向执行命令

Question

当我运行任何带有管道或重定向的命令时，它都会失败。

主人和仆从都运行正在为测试 Salt 而创建的 Ubuntu 14.04 Digital Ocean 盒子。

两者都是使用 bootstrap 脚本从 git 拉取最新分支安装的。

这是我得到的：

# salt-call --local cmd.run "ps aux | grep hello" -l debug
[DEBUG   ] Reading configuration from /etc/salt/minion
[DEBUG   ] Using cached minion ID from /etc/salt/minion_id: XXX.XXX.XX
[DEBUG   ] Configuration file path: /etc/salt/minion
[DEBUG   ] Reading configuration from /etc/salt/minion
[DEBUG   ] Failed to import module debian_service. The exeception was No module named systemd. Another attempt will be made to try to resolve dependencies.
[DEBUG   ] compile template:
[ERROR   ] Template does not exist:
[INFO    ] Executing command 'ps aux | grep hello' in directory '/root'
[ERROR   ] Command 'ps aux | grep hello' failed with return code: 1
[ERROR   ] output: error: garbage option

Usage:
  ps [options]

  Try 'ps --help <simple|list|output|threads|misc|all>'
  or 'ps --help <s|l|o|t|m|a>'
  for additional help text.

For more details see ps(1).

没有管道也能正常工作，但显然 returns 完整输出。

Answer 1

尝试使用 python_shell=True 或 cmd.shell:

root@323be0968814:/# salt-call --local cmd.run "ps aux | grep hello" python_shell=True
[INFO    ] Executing command 'ps aux | grep hello' in directory '/root'
local:
    root      4796  0.0  0.1 134688 24200 ?        S+   14:50   0:00 /usr/bin/python /usr/bin/salt-call --local cmd.run ps aux | grep hello python_shell=True
    root      4819  0.0  0.0   4444   652 ?        S+   14:50   0:00 /bin/sh -c ps aux | grep hello
    root      4821  0.0  0.0   4444   104 ?        R+   14:50   0:00 /bin/sh -c ps aux | grep hello

root@323be0968814:/# salt-call --local cmd.shell "ps aux | grep hello" 
[INFO    ] Executing command 'ps aux | grep hello' in directory '/root'
local:
    root      4822  0.0  0.1 134688 24204 ?        S+   14:52   0:00 /usr/bin/python /usr/bin/salt-call --local cmd.shell ps aux | grep hello
    root      4845  0.0  0.0   4444   648 ?        S+   14:52   0:00 /bin/sh -c ps aux | grep hello
    root      4847  0.0  0.0   4444   100 ?        R+   14:52   0:00 /bin/sh -c ps aux | grep hello

来自 the cmd.run docs（强调我的）：

WARNING: This function does not process commands through a shell unless the python_shell flag is set to True. This means that any shell-specific functionality such as 'echo' or the use of pipes, redirection or &&, should either be migrated to cmd.shell or have the python_shell=True flag set here.

Salt 无法使用管道或重定向执行命令

Salt fails to execute commands with pipes or redirects

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