Ansible -创建列表的with_items

Question

如何创建一个列表的with_items?我尝试了以下操作，但它只记录最后一个组ID，而不是创建一个列表。

- name: "Generate list"
set_fact:
my_new_list: "{{ [ item.group_id  ] }}" 
with_items:
- "{{ec2_info.instances[0].security_groups}}"

ec2_info.instances[0].security_groups有多个group_id

"security_groups": [
{
"group_id": "sg-0500c5b20f7c152b4",
"group_name": "ManageIQ"
},
{
"group_id": "sg-062178ea5fabaf350",
"group_name": "launch-wizard-1"
}
],

Answer 1

这个剧本陷阱所有的列表:

- name: "Generate list"
set_fact:
my_new_list: "{{ my_new_list|d([]) + [ item.group_id  ] }}" 
with_items:
- "{{ec2_info.instances[0].security_groups}}"