linux系统安装后初始化网络配置

系统 centoOS

网卡桥接  特别注意这个地方

临时修改当前IP地址
ifconfig eth0 192.168.1.200

配置网络 连接外网

vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=08:00:27:EC:9A:D4
TYPE=Ethernet
UUID=b9656ea1-7f88-48fe-ac45-8c5a29cfc833
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
IPADDR=192.168.1.200
NETMASK=255.255.255.0
NETWORK=192.168.1.0
GATEWAY=192.168.1.1
PEERDNS=yes
BROADCAST=192.168.1.255
IPV6INT=yes

vi /etc/resolv.conf
nameserver 116.228.111.118
nameserver 192.168.1.1

vi /etc/sysconfig/network
NETWORKING=yes
GATEWAY=192.168.1.1


service network restart

设置HOSTNAME
vi /etc/hosts
192.168.1.200 my01

vi /etc/sysconfig/network
HOSTNAME=my01

同步时间
yum install -y perl
yum install -y ntp
crontab -l >/tmp/crontab.bak
echo "*/10 * * * * /usr/sbin/ntpdate pool.ntp.org | logger -t NTP" >> /tmp/crontab.bak
crontab /tmp/crontab.bak

crontab -l
*/10 * * * * /usr/sbin/ntpdate pool.ntp.org | logger -t NTP

ntpdate pool.ntp.org

CentOS关掉防火墙以及selinux
/etc/init.d/iptables stop
永久关闭:
chkconfig --level 35 iptables off
检查防火墙
chkconfig  --list | grep ip

永久关闭SELinux
vi /etc/selinux/config
SELINUX=disabled

重启系统。