rename 修改
[root@centos6 ~]$ hostname # 查看當前的hostnmae
centos6
[root@centos6 ~]$ vim /etc/sysconfig/network # 編輯network文件修改hostname行(重啓生效)
[root@centos6 ~]$ cat /etc/sysconfig/network # 檢查修改
NETWORKING=yes
HOSTNAME=centos6
[root@centos6 ~]$ hostname centos6 # 設置當前的hostname(當即生效)
[root@centos6 ~]$ vim /etc/hosts # 編輯hosts文件,給127.0.0.1添加hostname
[root@centos6 ~]$ cat /etc/hosts # 檢查
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 centos6
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
[root@centos7 ~]$ hostnamectl set-hostname centos7 # 使用這個命令會當即生效且重啓也生效
[root@centos7 ~]$ hostname # 查看下
centos7
[root@centos7 ~]$ vim /etc/hosts # 編輯下hosts文件, 給127.0.0.1添加hostname
[root@centos7 ~]$ cat /etc/hosts # 檢查
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 centos7
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6