过滤ansible攻略输出

Question

我有一个ansible剧本的输出，我需要在这样的方式应用过滤器，以继续下一步的任务。请找到下面的输出。

ok: [localhost] => {
"results": [
    {
        "actions": {
            "namespaces": {}, 
            "state": "present", 
            "xpath": "/Storage/SSL/KeyStorePath"
        }, 
        "ansible_loop_var": "item", 
        "changed": false, 
        "pod": 1, 
        "failed": false, 
        "invocation": {
            "module_args": {
                "mount": true, 
                "input_type": "yaml",
            }
        }, 
        "item": "100.108.22.102", 
        "msg": "found 1 nodes"
    }, 
    {
        "actions": {
            "namespaces": {}, 
            "state": "present", 
            "xpath": "/Storage/SSL/KeyStorePath"
        }, 
        "ansible_loop_var": "item", 
        "changed": false, 
        "pod": 0, 
        "failed": false, 
        "invocation": {
            "module_args": {
                "mount": true, 
                "input_type": "yaml",
            }
        }, 
        "item": "100.108.22.103", 
        "msg": "found 0 nodes"
    }
]

}

在这里，我希望下一个任务在节点各自的pod值为1时执行。如果节点的pod值为0，则下一个任务不应该在相应的节点ip上运行。

请协助..

Answer 1

Q:当节点各自的pod值为1"时，"Execute下一个任务

答:有很多方法可以继续下一项任务。例如，给定变量results

1. 使用delegate_to和loop selected items

- hosts: localhost
  tasks:
    - debug:
        msg: 'Task is running on {{ item.item }}'
      loop: "{{ results|selectattr('pod', 'eq', 1)|list }}"
      loop_control:
        label: "{{ item.item }}"
      delegate_to: "{{ item.item }}"

给予(删节)

TASK [debug] ****
ok: [localhost -> 100.108.22.102] => (item=100.108.22.102) => 
  msg: Task is running on 100.108.22.102

1. 创建选定主机的列表，并测试该主机是否在list

中

- hosts: 100.108.22.102,100.108.22.103
  tasks:
    - debug:
        msg: "Task is running on {{ inventory_hostname }}"
      when: inventory_hostname in pods
      vars:
        pods: "{{ results|
                  selectattr('pod', 'eq', 1)|
                  map(attribute='item')|
                  list }}"

给予(删节)

TASK [debug] ****
ok: [100.108.22.102] => 
  msg: Task is running on 100.108.22.102
skipping: [100.108.22.103]

1. 在第一个播放中使用add_host创建一个库存组，并在第二个播放中使用

- hosts: localhost
  tasks:
    - add_host:
        name: '{{ item }}'
        groups: pods_enabled
      loop: "{{ results|
                selectattr('pod', 'eq', 1)|
                map(attribute='item')|
                list }}"

- hosts: pods_enabled
  tasks:
    - debug:
        msg: "Task is running on {{ inventory_hostname }}"

给予(删节)

PLAY [localhost] ****

TASK [add_host] ****
changed: [localhost] => (item=100.108.22.102)

PLAY [pods_enabled] ****

TASK [debug] ****
ok: [100.108.22.102] => 
  msg: Task is running on 100.108.22.102

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

Answer 2

您可以在下一个任务中使用with_items和when，如下所示

- name: validate pod value
  debug:
    msg: "The pod value is 1"
  with_items: "{{ your_var.results }}"
  when: item.pod == "1"