CentOS 使用最小桌面安裝完成，預設網路服務 NetworkManager ，由於伺服器使用固定ip，所以要關掉這個連線功能。
#service NetworkManager stop
#chkconfig NetworkManager off
#chkconfig NetworkManager --list
#service network restart
設定固ip方法：
＃vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE = eth0
ONBOOT = yes
IPADDR = 192.168.1.101
NETMASK = 255.255.255.0
#vi /etc/sysconfig/network
NETWORKING =yes
HOSTNAME =centos.localhost.localhost
GATEWAY=192.168.1.254
＃vi /etc/resolv.conf
search localhost.localhost
nameserver 168.95.1.1
#vi /etc/hosts
127.0.0.1 localhost
#service network restart
#ping www.hinet.net
#ifconfig
