Question

我正在尝试从Ansible playbook更改非root Linux用户的密码。为此，我尝试按照this link

按照说明我可以通过在终端输入以下代码来成功更改非root用户的密码。

$ echo -e "your_current_pass\nlinuxpassword\nlinuxpassword" | passwd
Changing password for testuser.
(current) UNIX password: Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully

之后我尝试用下面的Ansible playbook自动化代码，

---
- hosts: all
  gather_facts: no

  tasks:
    - name: "Check if user exists"
      register: user1_exists
      raw: getent passwd {{ ansible_user }}
      ignore_errors: true

    - name: "Change {{ ansible_user }} password"
      raw: echo -e "my_current_pass\nmy_new_pass\nmy_new_pass" | passwd
      when: user1_exists|success

我在这里使用Ansible的raw module，因为我的大多数机器都没有安装Python。我没有superuser (sudo)权限在playbook中使用become: True。

此处还使用基于密码的身份验证在目标计算机上运行Ansible playbook。不是基于ssh的身份验证。

但是当我执行剧本时，我收到了这个错误，

TASK [change user1 password] ***************************************************
fatal: [192.168.0.57]: FAILED! => {"changed": true, "failed": true, "rc": 10, 
"stderr": "Shared connection to 192.168.0.57 closed.\r\n", "stdout": "Changing 
password for testuser.\r\n(current) UNIX password: passwd: Authentication 
token manipulation error\r\npasswd: password unchanged\r\n", "stdout_lines": 
["Changing password for testuser.", "(current) UNIX password: passwd: 
Authentication token manipulation error", "passwd: password unchanged"]}

有人能告诉我我在这里犯的错误吗？

Answer 1

使用built-in user module代替shell命令。这需要您的剧本中的become: True。请注意，用户模块的password参数需要加密值。 password_hash jinja过滤器可以帮助您。

  - name: change user's password
    user:
      name: foo
      password: "{{ 'passwordsaresecret' | password_hash('sha512') }}"

Answer 2

您的剧本几乎是正确的。我有同样的要求，并且使用了您的剧本。您的剧本中只有一个错误，您忘记了将密码变量括在“ {{}}”花括号中。因此，我像下面那样更改了您的剧本，并且对我有用。

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        self.tableView.reloadRows(at: [indexPath], with: .none)
    })

Answer 3

我共同努力解决以下问题。密码不会显示在日志中，甚至不会显示冗长的日志“ -vvvvv”，并且在远程系统的历史记录中也不可见：

---
- name: Change password when connecting as a non-root/non-sudoer user.
#
# Ansible's 'user' module can only change a password if it is ran as a root user or 'become' is used.
# For a non-root user, when you run 'passwd', it asks for current password before you can enter a new one.
# Workaround: Create a a temporary script that updates the password and run that script remoteley 
#             and use 'no_log' directive to prevent passwords being visible in any log.
#             Tested that passwords not visible in verbose output '-vvvvv' and not in 'history' of remote computers.
#             The temporary script is deleted remotley automatically by 'script' module.
# Note:
# New password must comply with your passwd security policy.

  hosts: all
  gather_facts: no

  vars_prompt:
  - name: "curr_pass"
    prompt: Type in current password
    private: yes

  - name: "new_pass"
    prompt: Type in new password
    private: yes
    confirm: yes

  ## If you need to *temporary* hard-code credentials, use below.
  ## Delete after use or use vault if you want long-term storage.
  #vars:
  #- curr_pass: MyOldPass
  #- new_pass: MyNewPass123!!

  tasks:
  - name: Create a temporary local script which will change the users password
    copy:
      dest: updatePassNonRootDynamic.sh
      content: echo -e '{{curr_pass}}\n{{new_pass}}\n{{new_pass}}' | passwd
    delegate_to: localhost
    no_log: True
    run_once: true

  - name: Change password via temporary script on all hosts
    script: updatePassNonRootDynamic.sh

  - name: Remove the temporary local script
    file:
      path: updatePassNonRootDynamic.sh
      state: absent
    delegate_to: localhost
    run_once: true

当以非root用户身份连接而没有sudo权限时，使用Ansible playbook脚本更改linux密码

3 个答案: