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,没有则创建些文件。
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, 用以下方式:
[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
机器多的情况下,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,可以参考官方文档http://docs.ansible.com/authorized_key_module.html
将以下文件命名为:push.ssh.ymal
# Using alternate directory locations:
- hosts: tomcat-servers
user: tomcat (互信用户)
tasks:
- name: ssh-copy
authorized_key: user=tomcat(互信用户) key="{{ lookup('file', '/home/tomcat/.ssh/id_rsa.pub(master端公钥)') }}"
tags:
- sshkey
5.执行推送命令
ansible-playbook push.ssh.ymal -f 10 (并发数)
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 # 作用同上
#ping
ansible all -m ping
输出结果:
$ ansible all -m ping
192.168.100.1 | SUCCESS => {
"changed": false,
"ping": "pong"
}
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