使用来自一个主机组的事实用Ansible配置另一个主机组

Question

我试图使用来自另一组主机[etcd]的事实来配置一组主机[节点]。这是我的主机文件

[master]
kubernetes ansible_ssh_host=10.2.23.108

[nodes]
n1 ansible_ssh_host=10.2.23.192
n2 ansible_ssh_host=10.2.23.47

[etcd]
etcd01 ansible_ssh_host=10.2.23.11
etcd02 ansible_ssh_host=10.2.23.10
etcd03 ansible_ssh_host=10.2.23.9

请注意，组[etcd]不是供应的目标，[nodes]是。但是提供[节点]需要了解[etcd]的事实。

---
- name: Configure common
  hosts: nodes
  sudo: True
  tasks:
    - name: etcd endpoints
      file: dest=/etc/kubernetes state=directory

    - name: etcd endpoints
      template: src=files/k.j2 dest=/etc/kubernetes/apiserver

KUBE_ETCD_SERVERS="--etcd_servers="{% for host in groups['etcd'] %}https://{{hostvars[host]['ansible_eth0']["ipv4"]["address"]}}:2380{% if not loop.last %},{% endif %}{% endfor %}"

--etcd_servers=https://10.2.23.11:2380,https://10.2.23.10:2380,https://10.2.23.10:2380

当我运行这个playbook时，我得到控制台输出

TASK [etcd endpoints] **********************************************************
fatal: [n1]: FAILED! => {"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'ansible_eth0'"}
fatal: [n2]: FAILED! => {"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'ansible_eth0'"}

使etcd事实对节点播放可用的惯用Ansible方法是什么？

Answer 1

如果要使用某些主机的事实，应首先收集它们。
在[etcd]主机上运行安装任务以填充主机变量。

---
- name: Gather etcd facts
  hosts: etcd
  tasks:
    - setup:

- name: Configure common
  hosts: nodes
  sudo: True
  tasks:
    - name: etcd endpoints
      file: dest=/etc/kubernetes state=directory

    - name: etcd endpoints
      template: src=files/k.j2 dest=/etc/kubernetes/apiserver