今天写一个playbook的时候，使用when条件，ansible报了如下错误
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[WARNING]: when statements should not include jinja2
templating delimiters such as {{ }} or
{% %}. Found: {{ item.value.ip }} == {{
inventory_hostname}}
反复尝试几种写法都不行，于是google了一下，找到参考文档这么一个有价值的回答。
其实就是使用 单引号包裹，里边再用双引号。
示例playbook如下：
---
- name: test yaml
hosts: all
vars:
hostinfo:
server1: {ip: 10.18.105.8,user_id: "it's current server!!"}
server2:
ip: 10.18.105.2
user_id: 1b03wre
server3:
ip: 10.18.105.3
user_id: 1ew111e
server4:
ip: 10.18.105.4
user_id: 1b04311
server5:
ip: 10.18.105.5
user_id: 1122232
tasks:
- name: show all
variables
debug:
msg: Server {{item.key}} IP is {{ item.value.ip
}} and ID is {{ item.value.user_id }}
with_dict: "{{ hostinfo }}"
when: '"{{ item.value.ip }}" == "{{ inventory_hostname}}"'
《-----
就是这里，单引号包裹，里边双引号
register: aaa
- name: print name
debug: msg="{{ aaa }}"
参考文档：
http://oki2a24.com/2017/05/03/fix-when-statements-should-not-include-jinja2-templating-delimiters-in-ansible-2-3/
