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Ansible-快速添加免密码认证

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Ansible使用小技巧

生成管理机的私钥和公钥

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ssh-keygen -t rsa -b 2048 -P '' -f /root/.ssh/id_rsa

添加主机信息到主机清单中

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vim /etc/ansible/hosts
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#添加分组
[test-k8s]
172.20.21.249
172.20.21.250
172.20.21.251
172.20.21.252
172.20.21.253
172.20.21.254
172.20.21.255
172.20.22.0
172.20.22.1
172.20.22.2

配置playbook

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vim /etc/ansible/ssh-addkey.yml
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---
- hosts: pro-k8s
  gather_facts: no

  tasks:

  - name: install ssh key
    authorized_key: user=root
                    key="{{ lookup('file', '/root/.ssh/id_rsa.pub') }}"
                    state=present

运行playbook

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ansible-playbook -i /etc/ansible/hosts -k /etc/ansible/ssh-addkey.yml

输入服务器密码

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SSH password:

PLAY [pro-k8s] ***************************************************************************************************************************

TASK [install ssh key] *******************************************************************************************************************
changed: [172.21.5.197]
changed: [172.21.5.196]
changed: [172.21.5.199]
changed: [172.21.5.192]
changed: [172.21.5.195]
changed: [172.21.5.193]
changed: [172.21.2.240]
changed: [172.21.5.198]
changed: [172.21.2.238]
changed: [172.21.5.194]
changed: [172.21.2.236]
changed: [172.21.2.235]
changed: [172.21.2.237]
changed: [172.21.2.239]
changed: [172.21.2.234]
changed: [172.21.0.159]
changed: [172.21.0.155]
changed: [172.21.2.241]
changed: [172.21.0.154]
changed: [172.21.0.153]
changed: [172.21.0.158]
changed: [172.21.0.152]
changed: [172.21.0.160]
changed: [172.21.0.156]
changed: [172.21.0.157]
changed: [172.21.2.232]
changed: [172.21.2.233]
changed: [172.21.0.151]
changed: [172.21.5.191]

PLAY RECAP *******************************************************************************************************************************
172.21.0.151               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.152               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.153               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.154               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.155               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.156               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.157               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.158               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.159               : ok=1    changed=1    unreachable=0    failed=0
172.21.0.160               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.232               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.233               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.234               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.235               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.236               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.237               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.238               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.239               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.240               : ok=1    changed=1    unreachable=0    failed=0
172.21.2.241               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.191               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.192               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.193               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.194               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.195               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.196               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.197               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.198               : ok=1    changed=1    unreachable=0    failed=0
172.21.5.199               : ok=1    changed=1    unreachable=0    failed=0