Linux modifies hostname with password free login methods
- 2020-12-07 04:35:06
- OfStack
Modify hostname
[root@centos7 ~]$ hostnamectl set-hostname hadoop001 # Using this command takes effect immediately and the restart takes effect
[root@centos7 ~]$ hostname # Look at the
hadoop001
[root@centos7 ~]$ vim /etc/hosts # Under the edit hosts File, to 127.0.0.1 add hostname
[root@centos7 ~]$ cat /etc/hosts # check
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 hadoop001
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
Password-free login
scp id_rsa.pub lau@192.168.1.108:/home/lau/.ssh/pub_key
# The logged in user
cd ~/.ssh/
cat pub_key >> authorized_keys
chmod 600 /home/lau/.ssh/authorized_keys
conclusion
Above is the site to you Linux modification hostname and password-free login method, I hope to help you, if you have any questions welcome to leave a message, this site will promptly reply you!