1)配置ssh
(1)基本语法
ssh 另一台电脑的ip地址
(2)ssh连接时出现Host key verification failed的解决方法
[root@hadoop61 opt]# ssh 192.168.110.62
The authenticity of host '192.168.110.62 (192.168.110.62)' can't be established.
RSA key fingerprint is cf:1e:de:d7:d0:4c:2d:98:60:b4:fd:ae:b1:2d:ad:06.
Are you sure you want to continue connecting (yes/no)?
Host key verification failed.
(3)解决方案如下:直接输入yes
2)无密钥配置
(1)进入到我的home目录
cd ~/.ssh
(2)生成公钥和私钥:
ssh-keygen -t rsa
然后敲(三个回车),就会生成两个文件id_rsa(私钥)、id_rsa.pub(公钥)
(3)将公钥拷贝到要免密登录的目标机器上
ssh-copy-id hadoop62
3).ssh文件夹下的文件功能解释
(1)~/.ssh/known_hosts :记录ssh访问过计算机的公钥(public key)
(2)id_rsa :生成的私钥
(3)id_rsa.pub :生成的公钥
(4)authorized_keys :存放授权过得无秘登录服务器公钥