ansible - Ansible：根据计数有条件地加载组变量

Question

1 - name: Test
2 - hosts: webserv
3   connection: local
4   gather_facts: False
5 
6   tasks:
7   - name: Provision web instances
8     local_action:
9         module: rax
10         credentials: "{{ rax_cred | mandatory }}"
11         name: "{{ rax_name | default(w0) }}"
12         flavor: "{{ rax_flavor | default(6) }}"
13         image: debian-7-wheezy-pvhvm
14         files:
15           /root/.ssh/authorized_keys: "{{ rax_ssh_keys | mandatory }}"
16         count: "{{ rax_count | default(1) }}"
17         group: "{{ rax_group }}"
18         region: DFW
19         wait: yes
20         state: present
21     register: rax

我有这个 ansible-playbook，但是由于该组，新服务器的名称会附加一个数字计数器。我希望能够将它用于单个服务器实例以及多个服务器实例。有没有办法我可以做类似的事情：

如果计数大于 1，则设置组变量。

谢谢！

Answer 1

如果我理解正确，您希望group仅在rax_count大于 1 时才设置该值。您必须在两次播放中执行此操作：

- name: Provision web instances
     local_action:
         module: rax
         credentials: "{{ rax_cred | mandatory }}"
         name: "{{ rax_name | default(w0) }}"
         flavor: "{{ rax_flavor | default(6) }}"
         image: debian-7-wheezy-pvhvm
         files:
           /root/.ssh/authorized_keys: "{{ rax_ssh_keys | mandatory }}"
         count: "{{ rax_count | default(1) }}"
         group: "{{ rax_group if rax_count > 1 else None }}"
         region: DFW
         wait: yes
         state: present
     register: rax