如何在 Ansible 中使用命令 stdin? [英] How to use command stdin in Ansible?

问题描述

我试过这个:

- name: Log into Docker registry
  command: docker login --username "{{ docker_registry_username }}" --password-stdin
  stdin: "{{ docker_registry_password }}"

这会导致警告和命令失败:

This results in a warning and a failing command:

[警告]:忽略无效属性:stdin

[WARNING]: Ignoring invalid attribute: stdin

…

无法从非 TTY 设备执行交互式登录

Cannot perform an interactive login from a non TTY device

我也试过这个:

- name: Log into Docker registry
  command: docker login --username "{{ docker_registry_username }}" --password-stdin
    stdin: "{{ docker_registry_password }}"

这会导致语法错误:

错误！加载 YAML 时出现语法错误.

ERROR! Syntax Error while loading YAML.

command stdin 在 Ansible 2.7 中真的有效吗?如果是这样，我应该如何使用它?

Does command stdin actually work in Ansible 2.7? If so, how am I supposed to use it?

推荐答案

如果您想在 command 模块中使用 stdin 参数，请查看 文档，其中展示了使用其他选项(例如 creates，如下所示:

If you want to use the stdin argument to the command module, take a look at the docs, which show examples using other options such as creates, which looks like this:

# You can also use the 'args' form to provide the options.
- name: This command will change the working directory to somedir/ and will only run when /path/to/database doesn't exist.
  command: /usr/bin/make_database.sh arg1 arg2
  args:
    chdir: somedir/
    creates: /path/to/database

对于您的用例，您需要:

For your use case, you would want:

- name: Log into Docker registry
  command: docker login --username "{{ docker_registry_username }}" --password-stdin
  args:
    stdin: "{{ docker_registry_password }}"

您的第一次尝试失败，因为您将 stdin 设置为任务级别的键(例如 when 或 ignore_errors 等)，当您实际上希望它成为 command 模块的参数.

Your first attempt failed because you were setting stdin as a key at the task level (like when or ignore_errors, etc), when you actually want it to be an argument to the command module.

您的第二次尝试失败，因为它不是有效的 YAML.

Your second attempt failed because it wasn't valid YAML.

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