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问如何在带有某些条件的Ansible中向字典中添加字符串
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Stack Overflow用户

提问于 2021-09-08 19:44:03

回答 1查看 167关注 0票数 0

我的剧本有问题，实际上我想在一些Windows主机上做一个ping测试，我想通过Slack发送结果。我已经做了所有的这一切，问题是，我想要发出的信息，只是什么是什么是好的，什么不是。

这就是ping的作用：

---
- name: get powershell version
  ignore_unreachable: true
  raw: $PSVersionTable
- name: ping
  ignore_unreachable: true
  win_ping:
  register: ping_results

为了有一个远景，这是ping_results输出：

ok: [frsv000003.local.cloud.com] => {
    "msg": {
        "changed": false, 
        "failed": false, 
        "ping": "pong"
    }
}
ok: [frsv000023.local.cloud.com] => {
    "msg": {
        "changed": false, 
        "failed": false, 
        "ping": "pong"
    }
}
ok: [besv000075.local.cloud.com] => {
    "msg": {
        "changed": false, 
        "msg": "psrp connection failure during runspace open: Received a broken RunspacePoolState message: Requested registry access is not allowed.", 
        "skip_reason": "Host besv000075.local.cloud.com is unreachable", 
        "unreachable": true
    }
}
ok: [frsv000007.local.cloud.com] => {
    "msg": {
        "changed": false, 
        "msg": "psrp connection failure during runspace open: Received a WSManFault message. (Code: 2150858811, Machine: 172.9.1.xxx, Reason: The WS-Management service cannot process the request. The resource URI (http://schemas.microsoft.com/powershell/Microsoft.PowerShell) was not found in the WS-Management catalog. The catalog contains the metadata that describes resources, or logical endpoints.)", 
        "skip_reason": "Host frsv000007.local.cloud.com is unreachable", 
        "unreachable": true
    }
}

现在，对于发送空闲的消息，我已经创建了一个条件，将可以和不确定的主机放在两个不同的列表中。

- name: set fact
  set_fact:
    ok_list: []
- name: set fact2  
  set_fact:
    ok_list: "{{ ok_list + [item.value] }}"
  when: item.value is match('pong')
  with_dict: "{{ ping_results }}"
- name: set fact
  set_fact:
    nok_list: []
- name: set fact2  
  set_fact:
    nok_list: "{{ nok_list + [item.value] }}"
  when:
   - item.value is not match('pong')
  with_items: "{{ ping_results | dict2items }}"

我遇到的问题是：

TASK [Hello-windows : Print variable ok] ***************************************
ok: [frsv000003.local.cloud.com] => {
    "msg": [
        "pong"
    ]
}
ok: [frsv000023.local.cloud.com] => {
    "msg": [
        "pong"
    ]
}
ok: [besv000075.local.cloud.com] => {
    "msg": []
}
ok: [frsv000007.local.cloud.com] => {
    "msg": []
}

我只需要获得主机名就可以在Slack中打印它，问题是如何从一个列表中获取这些主机，而不需要空值。谢谢。

编辑部分：@larsks，我会把这个作为一个答案，库存是基于ansible塔，包含了很多主机，比如第一个例子：

  frsv000003.local.cloud.com
  frsv000004.local.cloud.com
  frsv000005.local.cloud.com
  frsv000006.local.cloud.com
  frsv000007.local.cloud.com
  frsv000008.local.cloud.com
  frsv000009.local.cloud.com
  frsv000010.local.cloud.com
 ...

对于剧本，我使用一个角色，因此该角色的主文件与您的相同

- name: set ok_list
  set_fact:
    ok_list: "{{ ok_list + [item] }}"
  when: hostvars[item].ping_results.ping|default('') == "pong"
  loop: "{{ groups.all }}"

- name: set nok_list
  set_fact:
    nok_list: "{{ nok_list + [item] }}"
  when: hostvars[item].ping_results.ping|default('') != "pong"
  loop: "{{ groups.all }}"

- debug:
    msg:
      - "ok_list: {{ ok_list }}"
      - "nok_list: {{ nok_list }}"

此外，对于主文件(而不是角色)，我有以下内容：

- name: Test windows Connectivity
  hosts: all
  gather_facts: no
  vars:
    ping_results:
    slack_msg:
    ok_list: []
    nok_list: []
  roles:
    - Hello-windows

因此，当我使用带有5个主机的作业模板运行作业时，问题是我得到了这样一个列表，这意味着nok列表包含所有主机：

TASK [Hello-windows : debug] ***************************************************
ok: [frsv000003.local.cloud.com] => {
    "msg": [
        "ok_list: [u'frsv000003.local.cloud.com', u'frsv000023.local.cloud.com']", 
        "nok_list: [u'frsv005207.local.cloud.com', u'frsv005336.local.cloud.com', u'uksv000232.local.cloud.com', u'frsv001871.local.cloud.com', u'frsv005090.local.cloud.com', u'frsv005333.local.cloud.com', u'frsv002043.local.cloud.com', u'frsv001811.local.cloud.com', u'frsv005150.local.cloud.com', u'frsv000928.local.cloud.com', u'frsv005529.local.cloud.com', u'frsv001606.local.cloud.com', u'frsv000236.local.cloud.com', u'frsv000929.local.cloud.com', u'frsv000363.local.cloud.com', u'frsv000539.local.cloud.com', u'frsv000653.local.cloud.com', u'frsv000508.local.cloud.com', u'frsv000654.local.cloud.com', u'frsv000205.local.cloud.com', u'frsv000632.local.cloud.com', u'frsv000516.local.cloud.com', u'frsv000427.local.cloud.com', u'frsv000137.local.cloud.com', u'frsv000466.local.cloud.com', u'frsv000324.local.cloud.com', u'frsv000974.local.cloud.com', u'frsv001451.local.cloud.com', u'frsv005432.local.cloud.com', u'besv005627.local.cloud.com',
    ]
}
ok: [frsv000023.local.cloud.com] => {
    "msg": [
        "ok_list: [u'frsv000003.local.cloud.com', u'frsv000023.local.cloud.com']", 
        "nok_list: [u'frsv005207.local.cloud.com', u'frsv005336.local.cloud.com', u'uksv000232.local.cloud.com', u'frsv001871.local.cloud.com', u'frsv005090.local.cloud.com', u'frsv005333.local.cloud.com', u'frsv002043.local.cloud.com', u'frsv001811.local.cloud.com', u'frsv005150.local.cloud.com', u'frsv000928.local.cloud.com', u'frsv005529.local.cloud.com', u'frsv001606.local.cloud.com', u'frsv000236.local.cloud.com', u'frsv000929.local.cloud.com', u'frsv000363.local.cloud.com', u'frsv000539.local.cloud.com', u'frsv000653.local.cloud.com', u'frsv000508.local.cloud.com', u'frsv000654.local.cloud.com', u'frsv000205.local.cloud.com', u'frsv000632.local.cloud.com', u'frsv000516.local.cloud.com', u'frsv000427.local.cloud.com', u'frsv000137.local.cloud.com', u'frsv000466.local.cloud.com', u'frsv000324.local.cloud.com', u'frsv000974.local.cloud.com', u'frsv001451.local.cloud.com', u'frsv005432.local.cloud.com', u'besv005627.local.cloud.com',
    ]
}
ok: [besv000075.local.cloud.com] => {
    "msg": [
        "ok_list: [u'frsv000003.local.cloud.com', u'frsv000023.local.cloud.com']", 
        "nok_list: [u'frsv005207.local.cloud.com', u'frsv005336.local.cloud.com', u'uksv000232.local.cloud.com', u'frsv001871.local.cloud.com', u'frsv005090.local.cloud.com', u'frsv005333.local.cloud.com', u'frsv002043.local.cloud.com', u'frsv001811.local.cloud.com', u'frsv005150.local.cloud.com', u'frsv000928.local.cloud.com', u'frsv005529.local.cloud.com', u'frsv001606.local.cloud.com', u'frsv000236.local.cloud.com', u'frsv000929.local.cloud.com', u'frsv000363.local.cloud.com', u'frsv000539.local.cloud.com', u'frsv000653.local.cloud.com', u'frsv000508.local.cloud.com', u'frsv000654.local.cloud.com', u'frsv000205.local.cloud.com', u'frsv000632.local.cloud.com', u'frsv000516.local.cloud.com', u'frsv000427.local.cloud.com', u'frsv000137.local.cloud.com', u'frsv000466.local.cloud.com', u'frsv000324.local.cloud.com', u'frsv000974.local.cloud.com', u'frsv001451.local.cloud.com', u'frsv005432.local.cloud.com', u'besv005627.local.cloud.com',
    ]
}
ok: [frsv000007.local.cloud.com] => {
    "msg": [
        "ok_list: [u'frsv000003.local.cloud.com', u'frsv000023.local.cloud.com']", 
        "nok_list: [u'frsv005207.local.cloud.com', u'frsv005336.local.cloud.com', u'uksv000232.local.cloud.com', u'frsv001871.local.cloud.com', u'frsv005090.local.cloud.com', u'frsv005333.local.cloud.com', u'frsv002043.local.cloud.com', u'frsv001811.local.cloud.com', u'frsv005150.local.cloud.com', u'frsv000928.local.cloud.com', u'frsv005529.local.cloud.com', u'frsv001606.local.cloud.com', u'frsv000236.local.cloud.com', u'frsv000929.local.cloud.com', u'frsv000363.local.cloud.com', u'frsv000539.local.cloud.com', u'frsv000653.local.cloud.com', u'frsv000508.local.cloud.com', u'frsv000654.local.cloud.com', u'frsv000205.local.cloud.com', u'frsv000632.local.cloud.com', u'frsv000516.local.cloud.com', u'frsv000427.local.cloud.com', u'frsv000137.local.cloud.com', u'frsv000466.local.cloud.com', u'frsv000324.local.cloud.com', u'frsv000974.local.cloud.com', u'frsv001451.local.cloud.com', u'frsv005432.local.cloud.com', u'besv005627.local.cloud.com',
    ]
}

PLAY RECAP *********************************************************************
besv000075.local.cloud.com : ok=3    changed=0    unreachable=1    failed=0    skipped=1    rescued=0    ignored=0   
frsv000003.local.cloud.com : ok=10   changed=1    unreachable=0    failed=0    skipped=10   rescued=0    ignored=0   
frsv000007.local.cloud.com : ok=3    changed=0    unreachable=1    failed=0    skipped=1    rescued=0    ignored=0   
frsv000023.local.cloud.com : ok=4    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

ansible

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-09-08 21:06:00

您的问题是，ping_results不是结果列表；它是单个主机的单个结果。当你跑步时：

- name: ping
  ignore_unreachable: true
  win_ping:
  register: ping_results

这在每个主机上运行一次，并为该主机注册一个名为ping_results的变量。您可以在调试输出中看到这一点。

要获得两个列表，一个是可访问的主机，另一个是不可访问的主机，您需要在单个主机(例如localhost)上运行一个play，并在所有目标主机上循环查找ping_results变量。例如：

- hosts: localhost
  gather_facts: false
  tasks:
    - name: set ok_list
      set_fact:
        ok_list: "{{ ok_list + [item] }}"
      when: hostvars[item].ping_results.ping|default('') == "pong"
      vars:
        ok_list: []
      loop: "{{ groups.all }}"

    - name: set nok_list
      set_fact:
        nok_list: "{{ nok_list + [item] }}"
      when: hostvars[item].ping_results.ping|default('') != "pong"
      vars:
        nok_list: []
      loop: "{{ groups.all }}"

    - debug:
        msg:
          - "ok_list: {{ ok_list }}"
          - "nok_list: {{ nok_list }}"

使用示例数据运行此操作将产生以下结果：

PLAY [localhost] ***************************************************************

TASK [set ok_list] *************************************************************
ok: [localhost] => (item=frsv000003.local.cloud.com)
ok: [localhost] => (item=frsv000023.local.cloud.com)
skipping: [localhost] => (item=besv000075.local.cloud.com) 
skipping: [localhost] => (item=frsv000007.local.cloud.com) 

TASK [set nok_list] ************************************************************
skipping: [localhost] => (item=frsv000003.local.cloud.com) 
skipping: [localhost] => (item=frsv000023.local.cloud.com) 
ok: [localhost] => (item=besv000075.local.cloud.com)
ok: [localhost] => (item=frsv000007.local.cloud.com)

TASK [debug] *******************************************************************
ok: [localhost] => {
    "msg": [
        "ok_list: ['frsv000003.local.cloud.com', 'frsv000023.local.cloud.com']",
        "nok_list: ['besv000075.local.cloud.com', 'frsv000007.local.cloud.com']"
    ]
}

PLAY RECAP *********************************************************************
localhost                  : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

我想这就是你要找的。

注意:我在hosts.yml中使用这个库存文件测试了上面的剧本

all:
  hosts:
    frsv000003.local.cloud.com:
      ansible_host: localhost
      ping_results:
        changed: false
        failed: false
        ping: pong
    frsv000023.local.cloud.com:
      ansible_host: localhost
      ping_results:
        changed: false
        failed: false
        ping: pong
    besv000075.local.cloud.com:
      ansible_host: localhost
      ping_results:
        changed: false
        msg: "psrp connection failure during runspace open: Received a broken RunspacePoolState message: Requested registry access is not allowed."
        skip_reason: "Host besv000075.local.cloud.com is unreachable"
        unreachable: true
    frsv000007.local.cloud.com:
      ansible_host: localhost
      ping_results:
        changed: false
        msg: "psrp connection failure during runspace open: Received a WSManFault message. (Code: 2150858811, Machine: 172.9.1.xxx, Reason: The WS-Management service cannot process the request. The resource URI (http://schemas.microsoft.com/powershell/Microsoft.PowerShell) was not found in the WS-Management catalog. The catalog contains the metadata that describes resources, or logical endpoints.)"
        skip_reason: "Host frsv000007.local.cloud.com is unreachable"
        unreachable: true

像这样运行：

ansible-playbook -i hosts.yml playbook.yml

票数 1

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/69108843

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