Ansible-使用用户输入来选择变量

问题描述

我想根据Ansible剧本中的用户输入选择特定的变量.具体来说，我想在服务器的位置上请求用户输入，然后根据输入执行特定的操作.

I would like to select a specific variable based on user input in an Ansible playbook. Specifically, I would like to ask for user input on a location of a server, and then execute a specific action based on the input.

这是当前的剧本:

    - hosts: all
      remote_user: root
      gather_facts: True
      vars:
        loc1: "10.13.1.140"
        loc2: "10.13.1.141"
        loc3: "10.13.1.142"

    vars_prompt:
      - name: location
        prompt: "Location of server?  Input options: loc1/loc2/loc3"
        private: no

    tasks:
      - name: Test connectivity to user selected location
        wait_for: host={{ vars.location }} port=9999 delay=0 timeout=10 state=started

运行剧本时的输出:

[root@ansmgtpr-labc01 cfengine]# ansible-playbook testpoo.yaml -i /tmp/test
SSH password:
Location of server?  Input options: loc1/loc2/loc3: loc2

PLAY     ***************************************************************************

TASK [setup] *******************************************************************
ok: [hostname.domain.com]

TASK [Test connectivity to user selected location] *****************************
fatal: [hostname.domain.com]: FAILED! => {"changed": false, "elapsed": 10, "failed": true, "msg": "Timeout when waiting for loc2:9999"}

PLAY RECAP *********************************************************************
hostname.domain.com : ok=1    changed=0    unreachable=0    failed=1

我想知道如何或最佳方式将位置的已读用户输入与变量部分顶部定义的位置的实际值(IP地址)相关联.也许评估或其他?

I would like to know how or the best way to link the read-in user input of the location with the actual value (IP address) of the location that is defined at the top in the variables section. Possibly eval or something else?

推荐答案

您的任务正在等待loc2，因此消息为Timeout when waiting for loc2:9999.

Your task is waiting for loc2, hence the message Timeout when waiting for loc2:9999.

改为使用host={{ vars[location] }}.

比较以下任务的输出:

tasks:
  - name: Show the value user entered
    debug: var=vars.location

  - name: Use the entered value as an index
    debug: var=vars[location]

结果(缩写):

TASK [Show the value user entered] *********************************************
ok: [localhost] => {
    "vars.location": "loc2"
}

TASK [Use the entered value as an index] ***************************************
ok: [localhost] => {
    "vars[location]": "10.13.1.141"
}

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