批量配置ssh免密登陆

1、主控端安装ansible

yum -y install ansible

2、主控端生成ssh密钥

ssh-keygen -t rsa
# 默认回车即可

3、主控端配置ansible

配置hosts
vi /etc/ansible/hosts
[ssh]
192.168.94.1[38:39]

[ssh:vars]
ansible_ssh_pass='Asdf1234'

编写pakybook
 vi /etc/ansible/ssh.yaml
- hosts: ssh
  user: root
  tasks:
  - name: ssh-copy
    authorized_key: user=root key="{{ lookup('file', '/root/.ssh/id_rsa.pub') }}"

执行playbook
ansible-playbook ssh.yaml

验证
ansible ssh -mshell -a "hostname"