Question

我有这本剧本：

---
# Run it like this:
# ansible-playbook --extra-vars '{"VAR":"var-value", "VAR":"var-value"}' playbook-name.yml
- hosts: localhost
  vars:
    instance_tag : "{{ TAG }}"
    instances_num: 2
  tasks:
  - name: Create new AWS instances
    local_action:
      module: ec2
      region: us-east-1 
      key_name: integration 
      instance_type: m3.medium 
      image: ami-61dcvfa 
      group: mysecgroup 
      instance_tags:
        Name: "{{ instance_tag }}"
    with_sequence: count = {{ instances_num | int }}

当我运行它时会抛出这个：

TASK: [Create new AWS instances] **********************************************
fatal: [localhost] => unknown error parsing with_sequence arguments: u'count = 1'

FATAL: all hosts have already failed -- aborting

我做错了什么？我也试过了2，但是抛出了同样的错误。我也试过了"{{instances_num}}"，但没有尝试过。

Answer 1

ec2 module有一个count参数，您可以直接使用，而不是尝试loop the task over a sequence。

你可以像这样使用它：

---
# Run it like this:
# ansible-playbook --extra-vars '{"VAR":"var-value", "VAR":"var-value"}' playbook-name.yml
- hosts: localhost
  vars:
    instance_tag : "{{ TAG }}"
    instances_num: 2
  tasks:
  - name: Create new AWS instances
    local_action:
      module: ec2
      region: us-east-1 
      key_name: integration 
      instance_type: m3.medium 
      image: ami-61dcvfa 
      group: mysecgroup 
      instance_tags:
        Name: "{{ instance_tag }}"
      count: "{{ instances_num }}"

使用Ansible创建许多AWS实例，＆＃39; count＆＃39;不起作用

1 个答案: