调试消息中的Ansible when条件

Question

我想从一个标准输出中创建一个when条件的任务。实战手册示例如下：

---
 - hosts: localhost
   gather_facts: false
   ignore_errors: yes
   vars:
     - dev_ip: '192.168.20.192'

   tasks:
    - name: checkking ssh status
      wait_for:
        host: "{{dev_ip}}"
        port: 22
        timeout: 2
        state: present
      register: ssh_stat

    - name: checkcondition
      debug:
        msg: "{{ssh_stat}}"

消息输出为：

ok: [localhost] => {
    "msg": {
        "changed": false, 
        "elapsed": 2, 
        "failed": true, 
        "msg": "Timeout when waiting for 192.168.20.192:22"
    }
}

如果字符串"Timeout when waiting for 192.168.20.192:22“在ssh_stat.stdout中，我想创建一个when条件任务

Answer 1

这是你需要的：

---
- name: answer stack overflow
  hosts: localhost
  gather_facts: false
  ignore_errors: yes

  tasks:
    - name: checkking ssh status
      wait_for:
        host: 192.168.1.23
        port: 22
        timeout: 2
        state: present
      register: ssh_stat
    - name: do something else when ssh_stat.msg == "Timeout when waiting for 192.168.1.23:22"
      shell: echo "I am doing it"
      when: ssh_stat.msg == "Timeout when waiting for 192.168.1.23:22"

输出：

PLAY [answer stack overflow] **************************************************************************************************************************************************************************************

TASK [checkking ssh status] ***************************************************************************************************************************************************************************************
[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.
fatal: [localhost]: FAILED! => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": false, "elapsed": 3, "msg": "Timeout when waiting for 192.168.1.23:22"}
...ignoring

TASK [do something else when ssh_stat.msg == "Timeout when waiting for 192.168.1.23:22"] ************************************************************************************************************************
changed: [localhost]

PLAY RECAP ********************************************************************************************************************************************************************************************************
localhost                  : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=1