步骤

通过SSH远程登录其它Linux服务器时，一般需要输入用户口令才能进入，也可以通过配置密钥的方式实现SSH的免密码登录，具体步骤如下：

1. 在本地生成一对公私钥匙对；
2. 私钥放在本地（SSH客户端）~/.ssh/id_rsa，权限为0600；
3. 公钥放在远端（SSH服务端）~/.ssh/authorized_keys文件内。

配置免密码登录的示例

编辑文件inventory

#file：inventory
node1 ansible_ssh_host=192.168.56.101 ansible_ssh_port=22 ansible_ssh_pass=*****
node2 ansible_ssh_host=192.168.56.102 ansible_ssh_port=22 ansible_ssh_pass=*****

[cluster]
node[1:2]

#部署节点，执行playbook的节点
[deploy]
node1

编辑文件set_nopasslogin.yml

---
#file：set_nopasslogin.yml
- hosts: deploy
  tasks:
    - name: Create SSH Directory
      file:
        path: ~/.ssh
        state: directory

    - name: Create Openssh Keypair
      openssh_keypair:
        path: ~/.ssh/id_rsa
        type: rsa

- hosts: cluster
  tasks:
    - name: Create SSH Directory
      file:
        path: ~/.ssh
        state: directory

    - name: Config Private Keys
      copy:
        dest: ~/.ssh/id_rsa
        src: ~/.ssh/id_rsa
        mode: 0600

    - name: Config Public Keys
      copy:
        dest: ~/.ssh/authorized_keys
        src: ~/.ssh/id_rsa.pub

执行playbook

截屏2021-06-22 上午8.49.02.png