Linux怎么修改主机IP地址与主机名

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  ]

[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

~

~

[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!

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