修改CentOS主机名
1.打开network文件
[root@yxy ~]# vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=yxy(你要修改的主机名)
2.修改系统主机表文件
[root@yxy ~]# vi /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1 yxy localhost.localdomain localhost4 localhost4.localdomain4(增加这一行)
3.重启系统
[root@yxy ~]# reboot
Broadcast message from root@yxy
(/dev/pts/0) at 0:20 ...
The system is going down for reboot NOW!
[root@yxy ~]#
设置免密登录
设置免密登录:
[root@yxy ~]# ssh-keygen (按3个回车)
[root@yxy ~]# ssh-copy-id yxy(主机名) 1032763126(密码)
若出现-bash: ssh-copy-id: command not found
先用命令安装
[root@yxy ~]# yum -y install openssh-clients
安装之后再用
[root@yxy ~]# ssh-copy-id yxy 1032763126
测试免密登录是否生效:
[root@yxy ~]# ssh yxy