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在 Ansible Playbook 中將字串轉換為整數

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在 Ansible Playbook 中將字串轉換為整數

我從 powershell 命令獲取計數並將其註冊到變數上。我必須在條件下使用該計數。在when條件下使用它之前我也將其更改為int。儘管這裡的計數為 0，但該任務（郵件通知）仍然被跳過。有人可以告訴我我在這裡做錯了什麼嗎？下面是我正在執行的程式碼

      - name: Get message_count
        shell:  echo "{{ (output.stdout | from_json).MessageCount  }}"
        register: message_count   #message_count is Zero here
        delegate_to: localhost
     
      - set_fact:
          countt: "{{ message_count | int}}"

#在使用 set_fact 傳遞給條件之前嘗試轉換為整數

      - debug: var=countt
      - name: send mail notification
        mail:
           host: abc.zzzz.net
           port: 25
           from: <[email protected]>
           to:
           - [email protected]        

           subject: Test mail sent from core server 
           body: Test mail sent from core server        
        delegate_to: localhost
        when: countt==0

答案1

這是我為使其發揮作用所做的事情：

---
- name: answer serverfault
  hosts: all
  become: yes

  tasks:
    - name: Get message_count
      shell: ls /tmp/empty | wc -l
      register: tmp_count
      delegate_to: localhost
    - debug: var=tmp_count.stdout
    - name: do something else when tmp_count.stdout == 0
      shell: echo "I am doing it"
      delegate_to: localhost
      when: tmp_count.stdout | int == 0

這是劇本運行結果：

ripper@mini-ripper:~/Devel/ansible$ ansip ./test_playbook.yml  -i localhost,

PLAY [answer serverfault] **************************************************************************************************************************************************************************************

TASK [Gathering Facts] ********************************************************************************************************************************************************************************************
[WARNING]: Platform linux on host localhost is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python interpreter could change this. See
https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.
ok: [localhost]

TASK [Get message_count] ******************************************************************************************************************************************************************************************
changed: [localhost -> localhost]

TASK [debug] ******************************************************************************************************************************************************************************************************
ok: [localhost] => {
    "tmp_count.stdout": "0"
}

TASK [do something else when tmp_count.stdout == 0] ***************************************************************************************************************************************************************
changed: [localhost -> localhost]

PLAY RECAP ********************************************************************************************************************************************************************************************************
localhost                  : ok=4    changed=2    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

回顧一下：

  • 您應該檢查暫存器變數是否不是更複雜的結構 - 通常是
  • 你不需要另一個自訂事實
  • 您需要{{ }}在不使用條件的when情況下轉換變數

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