1. 在playbook中使用循环with_items

[root@server4 ~]# vim /etc/ansible/hosts
172.25.60.2
testB.westos.com ansible_host=172.25.60.1
testC ansible_host=172.25.60.6

[testA]
test1 ansible_host=172.25.60.5

[testB]
172.25.60.3

[test:children]
testA
testB

with_items:将groups.ungrouped中返回的信息，一条一条的放到item中，并一条一条输出

[root@server4 ~]# cat xh.yml 
---
- hosts: testB
  remote_user: root
  gather_facts: no  # 禁止testB这台主机的fact的信息
  tasks:
  - debug:
      msg: "{
   {item}}"
    with_items: "{
   {groups.ungrouped}}"  

测试：

[root@server4 ~]# ansible-playbook xh.yml 

PLAY [testB] *******************************************************************

TASK [debug] *******************************************************************
ok: [172.25.60.3] => (item=172.25.60.2) => {
   
    "msg": "172.25.60.2"
}
ok: [172.25.60.3] => (item=testB.westos.com) => {
   
    "msg": "testB.westos.com"
}
ok: [172.25.60.3] => (item=testC) => {
   
    "msg": "testC"
}

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

2. 自定义with_items的值输出

[root@server4 ~]# cat xh.yml 
---
- hosts: testB
  remote_user: root
  gather_facts: no  # 禁止手机testB这台主机的fact的信息
  tasks:
  - debug:
      msg: "{
   {item}}"
    with_items:  # 或者[1,2,3]
    - 1
    - 2
    - 3

测试：

[root@server4 ~]# ansible-playbook xh.yml 

PLAY [testB] *******************************************************************

TASK [debug] *******************************************************************
ok: [172.25.60.3] => (item=1) => {
   
    "msg": 1
}
ok: [172.25.60.3] => (item=2) => {
   
    "msg": 2
}
ok: [172.25.60.3] => (item=3)