ansible - ansible-语句不应包含jinja2模板分隔符

Question

我希望有人可以提供帮助。我想知道使用when语句的正确语法是什么？我有这本剧本:

- set_fact:
   sh_vlan_id: "{{ output.response|map(attribute='vlan_id')|list|join(',') }}"

- name: create vlans
  ios_config:
    provider: "{{ provider }}"
    parents: vlan {{ item.id }}
    lines: name {{ item.name }}
    with_items: "{{ vlans }}"
  register: result
  when: '"{{ item.id }}" not in sh_vlan_id'

在运行过程中，它会向我发出警告，但实际上它会接受它。我不确定这是否可以。

TASK [set_fact]    *************************************************************************************************************************
ok: [acc_sw_01]

TASK [create vlans] *********************************************************************************************************************
[WARNING]: when statements should not include jinja2 templating delimiters such as {{ }} or {% %}. Found: "{{ item.id }}" not in sh_vlan_id

skipping: [acc_sw_01] => (item={u'id': 10, u'name': u'voice-1'}) 
skipping: [acc_sw_01] => (item={u'id': 101, u'name': u'data-2'}) 
skipping: [acc_sw_01] => (item={u'id': 100, u'name': u'data-1'}) 
changed: [acc_sw_01] => (item={u'id': 11, u'name': u'voice-2'})

但是，如果我删除 item.id语句中 when中的花括号

when: item.id not in sh_vlan_id

它给我一个错误:

TASK [set_fact] *************************************************************************************************************************
ok: [acc_sw_01]

TASK [create vlans] *********************************************************************************************************************
fatal: [acc_sw_01]: FAILED! => {"failed": true, "msg": "The conditional check 'item.id not in sh_vlan_id' failed. The error was: Unexpected templating type error occurred on ({% if item.id not in sh_vlan_id %} True {% else %} False {% endif %}): coercing to Unicode: need string or buffer, int found\n\nThe error appears to have been in '/ansible/cisco-ansible/config_tasks/vlan.yml': line 16, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: create vlans\n  ^ here\n"}

我正在使用Ansible 2.3.0(devel cbedc4a12a)btw。谢谢

Answer 1

如警告所示，“正确”语法不包括Jinja模板。否则您的条件将不起作用，因为类型不兼容。

您可以尝试输入强制:

when: ' item.id|string not in sh_vlan_id'

See: http://jinja.pocoo.org/docs/dev/templates/#list-of-builtin-filters