Question

我一直在使用这个示例playbook来使用Ansible创建机架空间服务器

http://nicholaskuechler.com/2015/01/09/build-rackspace-cloud-servers-ansible-virtualenv/

哪个好用，但一次只能在一台服务器上运行，所以我试图让它更具动态性，使用with_items循环遍历我想要构建的服务器数量

tasks:
- name: Rackspace cloud server build request
    local_action:
        module: rax
        credentials: "{{ credentials }}"
        name: "{{ item }}"
        flavor: "{{ flavor }}"
        image: "{{ image }}"
        region: "{{ region }}"
        files: "{{ files }}"
        wait: yes
        state: present
        networks:
        - private
        - public
    with_items:
        - server-app-01
        - server-app-02
    register: rax

这样可以很好地创建服务器，但是当我尝试使用链接中的方法将其添加到部署组时，我收到错误，正如预期的那样，现在有一个“结果”键我已经尝试了各种各样的尝试以我认为文档提及的方式来定位的方法：

- name: Add new cloud server to host group
    local_action:
        module: add_host
        hostname: "{{ item.success.name }}"
        ansible_ssh_host: "{{ item.success.rax_accessipv4 }}"
        ansible_ssh_user: root
        groupname: deploy
    with_items: rax.results

（我也尝试了许多其他方法来定位）但我得到'一个或多个未定义的变量：'list object'没有属性'rax_accessipv4“

这是我从rax通过调试返回的对象的精简版本。这些服务器不再存在。 http://pastebin.com/NRvM7anS

任何人都可以告诉我我哪里出错了我开始有点生气了

Answer 1

如果您发现rax.results.success的类型为list。

所以：hostname: "{{ item.success.name }}"

应该是

hostname: "{{ item.success[0].name }}"或
hostname: "{{ item['success'][0]['name'] }}"

{
            "changed": true,
            "msg": "All items completed",
            "results": [
                {
                    "instances": [
                        {
                            "name": "server-app-01",
                            "rax_accessipv4": "134.213.51.171",
                            "rax_accessipv6": "2a00:1a48:7808:101:be76:4eff:fe08:5251",
                        }
                    ],
                    "item": "server-app-01",
                    "success": [
                        {
                            "name": "server-app-01",
                            "rax_accessipv4": "134.213.51.171",
                            "rax_accessipv6": "2a00:1a48:7808:101:be76:4eff:fe08:5251",
                        }
                    ],
                    "timeout": []
                },
          ......
}

Answer 2

我本周五只是在摔跤。这是我的解决方案：

---
- name: Provision rackspace webheads
  hosts: localhost
  gather_facts: false
  max_fail_percentage: 10
  tasks:
    - name: Provision a set of instances
      local_action:
          group: servers
          count: 5
          exact_count: yes
          credentials: cred.ini
          flavor: <FLAVOR ID>
          group: raxhosts
          image: <IMAGE ID>
          key_name: <SSH KEYNAME>
          module: rax
          name: webheads
          state: present
          wait: yes
      register: rax
    - name: Add new instances to the group 'raxhosts'
      local_action:
        module: add_host
        hostname: "{{ item.name }}"
        ansible_ssh_host: "{{ item.rax_accessipv4 }}"
        ansible_ssh_pass: "{{ item.rax_adminpass }}"
        groupname: raxhosts
      with_items: rax.success
      when: rax.action == 'create'
    - name: Wait for hosts
      local_action: wait_for host={{ item.rax_accessipv4 }} port=22 delay=60 timeout=600 state=started
      with_items: rax.success

这是我的cred.ini的样子：

[rackspace_cloud]
username = 
api_key =

像这样运行：

RAX_CREDS_FILE=cred.ini RAX_REGION=DFW ansible-playbook <playbook>.yml

无法在循环中访问寄存器变量

2 个答案: