Linux下修改主机IP、主机名

 　　1. 修改网络配置,　　Last login: Sat Sep 6 17:33:02 2014,　　[root@centos ~]# vi/etc/sysconfig/network-scripts/ifcfg-eth0,　　--修改前,　　# Intel Corporation 82540EM GigabitEthernet Controller,　　DEVICE=eth0,　　BOOTPROTO=dhcp,　　ONBOOT=yes,　　HWADDR=08:00:27:80:63:5b,　　~,　　~,　　--修改后,　　# Intel Corporation 82540EM GigabitEthernet Controller,　　DEVICE=eth0,　　BOOTPROTO=static,　　IPADDR=10.53.105.65,　　NETMASK=255.255.255.0,　　ONBOOT=yes,　　HWADDR=08:00:27:80:63:5b,　　~,　　[root@centos ~]# service network restart,　　Shutting down interface eth0: [ OK ],　　Shutting down loopback interface: [ OK ],　　Bringing up loopback interface: [ OK ],　　Bringing up interface eth0: RTNETLINK answers: Invalid argument,　　[ OK ],　　2. 修改hosts配置,　　[root@centos ~]# vi /etc/hosts,　　# Do not remove the following line, orvarious programs,　　# that require network functionality willfail.,　　127.0.0.1 centos localhost.localdomainlocalhost,　　::1 localhost6.localdomain6 localhost6,　　10.53.105.65 hyldb,　　~,　　~,　　3. 修改network配置,　　[root@centos ~]# vi /etc/sysconfig/network,　　--修改前,　　NETWORKING=yes,　　NETWORKING_IPV6=yes,　　HOSTNAME=centos,　　GATEWAY=10.53.105.255,　　~,　　~,　　--修改后,　　NETWORKING=yes,　　NETWORKING_IPV6=no,　　HOSTNAME=hyldb,　　GATEWAY=10.53.105.255,　　~,　　~,　　--重启系统，使配置生效,　　[root@centos ~]# reboot,　　Broadcast message from root (pts/3) (SunSep 7 00:00:08 2014):,　　The system is going down for reboot NOW!,　　重启后效果如下：,　　Last login: Sat Sep 6 23:55:38 2014 from 10.53.105.69,　　[root@hyldb ~]# ifconfig,　　eth0 Link encap:Ethernet HWaddr08:00:27:80:63:5B,　　inet addr:10.53.105.65 Bcast:10.53.105.255 Mask:255.255.255.0,　　inet6 addr: fe80::a00:27ff:fe80:635b/64 Scope:Link,　　UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1,　　RX packets:44 errors:0 dropped:0 overruns:0 frame:0,　　TX packets:73 errors:0 dropped:0 overruns:0 carrier:0,　　collisions:0 txqueuelen:1000,　　RX bytes:5283 (5.1 KiB) TXbytes:10654 (10.4 KiB),　　lo Link encap:Local Loopback,　　inet addr:127.0.0.1 Mask:255.0.0.0,　　inet6 addr: ::1/128 Scope:Host,　　UP LOOPBACK RUNNING MTU:16436 Metric:1,　　RX packets:5900 errors:0 dropped:0 overruns:0 frame:0,　　TX packets:5900 errors:0 dropped:0 overruns:0 carrier:0,　　collisions:0 txqueuelen:0,　　RX bytes:10634248 (10.1 MiB) TXbytes:10634248 (10.1 MiB),　　[root@hyldb ~]#  hostname,　　hyldb,　　[root@hyldb ~]#,