LINUX环境下三节点服务器如何配置互信

Theme:LINUX环境下三节点服务器如何配置互信

三节点：

# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.3 (Maipo)

db1 192.168.10.111
db2 192.168.10.112
db3 192.168.10.113

三个节点分别执行 ： # ssh-keygen -t rsa
[root@db2 .ssh~]# scp id_rsa.pub 192.168.10.111：~/.ssh/id_rsa.pub1
[root@db3 .ssh~]# scp id_rsa.pub 192.168.10.111：~/.ssh/id_rsa.pub2
[root@db1 .ssh~]# cat id_rsa.pub id_rsa.pub1 id_rsa.pub2 > authorized_keys
[root@db1 .ssh~]# scp authorized_keys 192.168.10.112:~/.ssh/
[root@db1 .ssh~]# scp authorized_keys 192.168.10.113:~/.ssh/
shell > chmod 600 authorized_keys (三个节点都执行)

注意：三节点执行完，一定要用ssh 各访问下。命令如下

 # ssh db01 date
 # ssh db02 date
 # ssh db03 date

验证ssh配置是否正确，如果不需要输入密码就可以输出时间，说明ssh验证配置成功。必须把以上命令在两个节点都运行，每一个命令在第一次执行的时候需要输入yes。

如下框文处：

[root@db02 .ssh]# ssh db01 dateThe authenticity of host 'db01 (192.168.10.111)' \
 can't be established.ECDSA key fingerprint is \
 3d:90:b0:64:bc:95:07:fc:ba:e1:e3:90:11:f3:3a:14.\
 Are you sure you want to continue connecting (yes/no)? \
 yesWarning: Permanently added 'db01' (ECDSA) to the\
  list of known hosts.Mon Oct 23 14:10:32 CST 2019