基于从IOS主机收集到的事实，我想看/学一个if-else逻辑的实用示例。例如，如果正在运行的固件版本更高，则执行此操作；否则，请执行其他操作。
- name: task1
hosts: all
gather_facts: no
tasks:
- name: Get facts
ios_facts:
gather_subset: all
- name: Define variable (version of compliant image version)
set_fact:
compliant_image: "16.04"
- debug:
var: ansible_net_image
- name: Print warning if not compliant
shell: echo "WARNING - Non compliant image! Should be {{ compliant_image }}"
register: compliance_output
when: ansible_net_image is not search(compliant_image)
- name: Print information if ok
shell: echo "INFO - Compliant image"
register: compliance_output
when: ansible_net_image is search(compliant_image)
- debug: var=compliance_output
这就是我得到的：
TASK [Define variable (version of compliant image version)] ******
ok: [My_IOS_Host]
TASK [debug] *****************************************************
ok: [My_IOS_Host] => {
"ansible_net_image": "bootflash:/isr4300-universalk9.03.16.04b.S.155-3.S4b-ext.SPA.bi"
}
TASK [Print warning if not compliant] ****************************
changed: [My_IOS_Host]
TASK [Print information if ok] ***********************************
skipping: [My_IOS_Host]
TASK [debug] *****************************************************
ok: [My_IOS_Host] => {
"compliance_output": {
"changed": false,
"skip_reason": "Conditional result was False",
"skipped": true
}
}
据我了解，任务：Print information if ok应该具有值：INFO - Compliant image。
我想使用这些信息或进一步的逻辑，但似乎还没有获得Ansible的变量逻辑
答案 0 :(得分：0)
（可使用2.7.9）
条件符合我的预期。以下任务
vars:
ansible_net_image: "bootflash:/isr4300-universalk9.03.16.04b.S.155-3.S4b-ext.SPA.bi"
tasks:
- set_fact:
compliant_image: "16.04"
- debug: msg="INFO - Compliant image"
when: ansible_net_image is search(compliant_image)
- debug: msg="WARNING - Not compliant image"
when: ansible_net_image is not search(compliant_image)
- set_fact:
compliant_image: "16.05"
- debug: msg="INFO - Compliant image"
when: ansible_net_image is search(compliant_image)
- debug: msg="WARNING - Not compliant image"
when: ansible_net_image is not search(compliant_image)
给予
PLAY [localhost] *******************************************************************************************
TASK [set_fact] ********************************************************************************************
ok: [localhost]
TASK [debug] ***********************************************************************************************
ok: [localhost] => {
"msg": "INFO - Compliant image"
}
TASK [debug] ***********************************************************************************************
skipping: [localhost]
TASK [set_fact] ********************************************************************************************
ok: [localhost]
TASK [debug] ***********************************************************************************************
skipping: [localhost]
TASK [debug] ***********************************************************************************************
ok: [localhost] => {
"msg": "WARNING - Not compliant image"
}
答案 1 :(得分：0)
我设法达到了半满意的解决方案：
# playbook.yml
---
- name: task1
hosts: all
gather_facts: no
tasks:
- name: Get facts
ios_facts:
gather_subset: all
- name: Define variable (non)
set_fact:
compliant_image: "{{ param1 }}"
- debug:
var: ansible_net_image
- name: Print warning if not compliant
shell: echo "WARNING - Non compliant image! Should be {{ compliant_image }}"
register: compliance_output
when: ansible_net_image is not search(compliant_image)
- debug: var=compliance_output
- name: Define variable (non)
set_fact:
compliant_image: "{{ param1 }}"
- name: Print information if ok
shell: echo "INFO"
register: compliance_output
when: ansible_net_image is search(compliant_image)
- debug: var=compliance_output
从CLI传递param1：
ansible-playbook playbook.yml -e "param1=16.03"触发第一个条件，而跳过第二个条件。
再次感谢弗拉基米尔！必须睡一会才能了解Ansible处理变量的方式。