TypeError：“NoneType”对象在ansible中不可订阅

Question

这是我的playbook.yml调用

playbook.yml

---
- hosts: localhost
  name: ec2 launcher
  connection: local
  roles:
       - {role: aws-vpc}

我的角色aws包含任务vars目录。

任务中的main.yml

---
# tasks file for aws-vpc


- name: create VPC
  ec2_vpc_net:
    name: "{{ vpc_name }}"
    cidr_block: "{{ vpc_cidr }}"
    region: "{{ region }}"
    state: present
    aws_access_key: "{{ aws_access_key }}"
    aws_secret_key: "{{ aws_secret_key }}"
  register: vpc

- name: print vpc details
  debug:
        var: vpc

- name: create public subnet2
  ec2_vpc_subnet:
    state: present
    vpc_id: "{{ vpc.vpc.id }} "
    cidr: "{{ subnet2_cidr }}"
    az: "{{ az2 }}"
    aws_access_key: "{{ aws_access_key }}"
    aws_secret_key: "{{ aws_secret_key }}"
    map_public: yes
    resource_tags:
       Name: "{{ subnet2_name }}"
  register: subnet2

- name: print subnet2 details
  debug:
        var: subnet2

vars中的main.yml

# vars file for aws-vpc

aws_access_key: "..........."
aws_secret_key: "............"
region: "us-west-2"

# VPC
vpc_cidr: 10.10.0.0/26
vpc_name: "my vpc"

# Subnet1
subnet1_name: "td-sb1"
subnet1_cidr: 10.10.0.0/27

# Subnet2
subnet2_name: "td-sb2"
subnet2_cidr: 10.10.0.32/27

# Availability zones
az1: "us-west-2a"
az2: "us-west-2b"
az3: "us-west-2c"
az4: "us-west-2d"

但是，如果执行ansible- playbook.yml，则会显示以下错误：

TASK [aws-vpc : create public subnet2] *********************************************************************************************************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: TypeError: 'NoneType' object is not subscriptable
fatal: [localhost]: FAILED! => {"changed": false, "module_stderr": "Traceback (most recent call last):\n  File \"/home/prudhvi/.ansible/tmp/ansible-tmp-1567259099.58-219222309055552/AnsiballZ_ec2_vpc_subnet.py\", line 114, in <module>\n    _ansiballz_main()\n  File \"/home/prudhvi/.ansible/tmp/ansible-tmp-1567259099.58-219222309055552/AnsiballZ_ec2_vpc_subnet.py\", line 106, in _ansiballz_main\n    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\n  File \"/home/prudhvi/.ansible/tmp/ansible-tmp-1567259099.58-219222309055552/AnsiballZ_ec2_vpc_subnet.py\", line 49, in invoke_module\n    imp.load_module('__main__', mod, module, MOD_DESC)\n  File \"/usr/lib/python3.6/imp.py\", line 235, in load_module\n    return load_source(name, filename, file)\n  File \"/usr/lib/python3.6/imp.py\", line 170, in load_source\n    module = _exec(spec, sys.modules[name])\n  File \"<frozen importlib._bootstrap>\", line 618, in _exec\n  File \"<frozen importlib._bootstrap_external>\", line 678, in exec_module\n  File \"<frozen importlib._bootstrap>\", line 219, in _call_with_frames_removed\n  File \"/tmp/ansible_ec2_vpc_subnet_payload_v3vahv3o/__main__.py\", line 602, in <module>\n  File \"/tmp/ansible_ec2_vpc_subnet_payload_v3vahv3o/__main__.py\", line 592, in main\n  File \"/tmp/ansible_ec2_vpc_subnet_payload_v3vahv3o/__main__.py\", line 504, in ensure_subnet_present\n  File \"/tmp/ansible_ec2_vpc_subnet_payload_v3vahv3o/__main__.py\", line 517, in ensure_final_subnet\nTypeError: 'NoneType' object is not subscriptable\n", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}

PLAY RECAP *************************************************************************************************************************************************************************************************
localhost     

它为什么会来，如何解决它？

在这里，vpc是成功创建的，但子网却造成了问题。为什么？

Answer 1

最后，我找到了答案，并想和你分享

任务中的main.yml

- name: create public subnet2
  ec2_vpc_subnet:
    state: present
    vpc_id: "{{ vpc.vpc.id }}"     # initially it was vpc_id: "{{ vpc.vpc.id }} " 
    cidr: "{{ subnet2_cidr }}"
    az: "{{ az2 }}"
    aws_access_key: "{{ aws_access_key }}"
    aws_secret_key: "{{ aws_secret_key }}"
    map_public: yes
    resource_tags:
       Name: "{{ subnet2_name }}"
  register: subnet2

- name: print subnet2 details
  debug:
        var: subnet2

问题与space.So有关，请注意这些问题。