【经验】ansible 批量推送公钥

1.使用 ssh-keygen -t rsa生成密钥对

 ssh-keygen -t rsa

 

2.推送单个公钥到远程机器

格式： ssh-copy-id -i ~/.ssh/id_rsa.pub username@[ip,hostname]

ssh-copy-id -i ~/.ssh/id_rsa.pub username@192.168.100.2

 

3.添加ansible hosts

编辑/etc/ansible/hosts,没有则建立些文件。

 

格式：【主机名】 【主机地址】 【主机密码】  默认是root用户来进行的

[tomcat-servers]
1 ansible_ssh_user="tomcat"  ansible_ssh_host=192.168.100.1 ansible_ssh_pass="test"
2 ansible_ssh_user="tomcat"  ansible_ssh_host=192.168.100.2 ansible_ssh_pass="test"

 

新版的ansible(2.4) hosts有更新， 用如下方式：

[tomcat-servers]

192.168.100.1   ansible_user=tomcat  ansible_ssh_pass="test"
192.168.100.2   ansible_user=tomcat  ansible_ssh_pass="test"

 

4.批量推送公钥到远程机器

机器多的状况下，使用ssh-copy-id方法有些费时，使用ansible-playbook推送ymal，这里使用到了authoried_keys模块，能够参考 http://docs.ansible.com/authorized_key_module.html

将如下文件命名为：push.ssh.ymal 

 # Using alternate directory locations:
  - hosts: tomcat-servers
    user: tomcat
    tasks:
     - name: ssh-copy
       authorized_key: user=tomcat key="{{ lookup('file', '/home/tomcat/.ssh/id_rsa.pub') }}"
       tags:
         - sshkey

 

5.执行推送命令

ansible-playbook push.ssh.ymal 

 

6.如若报错,解决

Using a SSH password instead of a key is not possible because Host Key checking is enabled and sshpass does not support this.  Please add this host's fingerprint to your known_hosts file to manage this host.

修改host_key_checking(默认是check的)：

vi /home/xiangdong/ansible/ansible.cfg
# uncomment this to disable SSH key host checking
host_key_checking = False

 

7.测试

#查看各机器时间
ansible all -a date
#ansible all -m command -a date # 做用同上

#ping
 ansible all -m ping

 输出结果：

$ ansible all  -m ping 
192.168.100.1 | SUCCESS => {
    "changed": false, 
    "ping": "pong"
}

 

 

参考：

1.http://mageedu.blog.51cto.com/4265610/1412028

2.http://www.justwinit.cn/post/8973/