linux服务器秘钥

服务器之间的ssh无密码连接；
准备机器

主机名	ip
es1	192.168.24.140
es2	192.168.24.128
es3	192.168.24.139

生成秘钥
ssh-keygen -t rsa

传输公钥

cd .ssh/

cat id_rsa.pub >>authorized_keys

chmod 600 authorized_keys

scp -rp .ssh 192.168.24.128:~

scp -rp .ssh 192.168.24.139:~

hosts解析
cat /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.24.140 es1
192.168.24.128 es3
192.168.24.139 es2

测试
[root@es1 .ssh]# ssh es2
Last login: Thu Feb 4 15:15:59 2021 from es1