linux修改主机名

1.查看当前的主机名

[root@center-2 ~]# hostname center-2 [root@center-2 ~]# hostnamectl Static hostname: localhost.localdomain Transient hostname: center-2 Icon name: computer-vm Chassis: vm Machine ID: c6cdeba96dae5d459d9ed7e60ec11236 Boot ID: 268034afb07045e980911c03fdb1a3c4 Virtualization: kvm Operating System: CentOS Linux 7 (Core) CPE OS Name: cpe:/o:centos:centos:7 Kernel: Linux 3.10.0-693.el7.x86_64 Architecture: x86-64

2.临时修改主机名

[root@center-3 ~]# hostname center-2 临时修改，重启服务器后就不生效了 [root@center-3 ~]# hostname center-2 [root@center-3 ~]# hostname -i 查看本机器名对应的ip地址 fe80::1086:2b08:1685:4c92%eth0 fe80::42:2aff:fe22:e645%docker0 fe80::1072:13ff:fe68:4cbc%veth3a64865 fe80::5449:7ff:fe7f:8365%veth14480fb fdb2:2c26:f4e4:0:5328:86b9:7584:f64%2 10.211.55.4 172.17.0.1

3.永久修改主机名 需要修改以下两个配置文件

1、方法一使用hostnamectl命令 [root@center-2 ~]# hostnamectl set-hostname center-3 [root@center-2 ~]# hostname center-3 2、方法二：修改配置文件 /etc/hostname 保存退出 [root@center-2 ~]# vim /etc/hostname center-3 :wq 保存