Ansible

Question

这是我正在处理的问题。

我有一个ansible服务器我有另一个服务器 M 我还有其他服务器 B1、B2、B3... ansible 都知道

我有一个这样的主机文件

[CTRL]
M

[SLAVES]
B1
B2
B3

我想在我的主服务器上生成一个 ssh 密钥（不是 ansible 本身）并将它部署到我的其他从服务器上以允许主服务器通过密钥连接到从服务器。

这是我尝试过的：

- hosts: CTRL
  remote_user: root
  vars_prompt:
   - name: ssh_password
     prompt : Please enter password for ssh key copy on remote nodes
     private: yes
  tasks:
   - yum: name=sshpass state=present
     sudo: yes
   - name: generate ssh key on the controller
     shell : ssh-keygen -b 2048 -t rsa -f /root/.ssh/id_rsa -q -N /dev/null
   - name: copy ssh key to the other nodes
     shell : sshpass -p '{{ ssh_password }}' ssh-copy-id root@'{{ item }}'
     with_items: groups['SLAVES']
     delegate_to: "{{ groups['CTRL'][0] }}"

密钥生成有效，但无论我如何工作，我都无法将密钥复制到从属主机

failed: [M -> M] => (item=B1) => {"changed": true, "cmd": "sshpass -p 'mypassword' ssh-copy-id root@'B1'", "delta": "0:00:00.101102", "end": "2016-07-18 11:08:56.985623", "item": "B1", "rc": 6, "start": "2016-07-18 11:08:56.884521", "warnings": []}
failed: [M -> M] => (item=B2) => {"changed": true, "cmd": "sshpass -p 'mypassword' ssh-copy-id root@'B2'", "delta": "0:00:00.101102", "end": "2016-07-18 11:08:56.985623", "item": "B1", "rc": 6, "start": "2016-07-18 11:08:56.884521", "warnings": []}
failed: [M -> M] => (item=B3) => {"changed": true, "cmd": "sshpass -p 'mypassword' ssh-copy-id root@'B3'", "delta": "0:00:00.101102", "end": "2016-07-18 11:08:56.985623", "item": "B1", "rc": 6, "start": "2016-07-18 11:08:56.884521", "warnings": []}

您知道我如何更正我的代码吗？或者您是否有更简单的方法来完成我想做的事情？

谢谢。

Answer 1

这是没有文件获取的更简洁的解决方案：

---
- hosts: M
  tasks:
    - name: generate key pair
      shell: ssh-keygen -b 2048 -t rsa -f /root/.ssh/id_rsa -q -N /dev/null
      args:
        creates: /root/.ssh/id_rsa 

    - name: test public key
      shell: ssh-keygen -l -f /root/.ssh/id_rsa.pub
      changed_when: false

    - name: retrieve public key
      shell: cat /root/.ssh/id_rsa.pub
      register: master_public_key
      changed_when: false

- hosts: SLAVES
  tasks:
    - name: add master public key to slaves
      authorized_key:
        user: root
        key: "{{ hostvars['M'].master_public_key.stdout }}"

可能的解决方案之一（我的第一个答案）：

---
- hosts: M
  tasks:
    - name: generate key pair
      shell: ssh-keygen -b 2048 -t rsa -f /root/.ssh/id_rsa -q -N /dev/null

    - name: fetch public key
      fetch:
        src: /root/.ssh/id_rsa.pub
        dest: tmp/
        flat: yes

- hosts: SLAVES
  tasks:
    - name: add master public key to slaves
      authorized_key:
        user: root
        key: "{{ lookup('file', 'tmp/id_rsa.pub') }}"

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