centos6.5版本
编辑ifcfg-eth0
vi /etc/sysconfig/network-scripts/ifcfg-eth0
参照下面代码修改自己的配置
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#
DEVICE=eth0
TYPE=Ethernet
UUID=e8e5504f-6b1d-42b3-9b92-bd71a8b87517
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
HWADDR=00:0C:29:EC:45:D4
IPADDR=192.168.16.90
PREFIX=24
GATEWAY=192.168.16.1
DNS1=114.114.114.114
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME=”System eth0”
#
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UUID和HWADDR保留自己的其余的用这个替换, 注意修改之前先备份, 免得改错了
编辑network
vi /etc/sysconfig/network
参照一下代码修改自己的配置, 也就改个网关地址
#
NETWORKING=yes
HOSTNAME=localhost.localdomain
GATEWAY=192.168.16.1
#
编辑resolv.conf
vi /etc/resolv.conf
这个一般不用改, 改了上面, 这个自动就改过来了
#
nameserver 192.168.16.1
#
最后重启网关配置
service network restart
然后ping www.baidu.com 测试一下网络配置是否完成
centos7版本
使用场景, centos7, VMware Workstation Pro, 最小化安装之后, 执行ifconfig命令, 找不到eth0配置
有两个网卡配置
ens33(这里名称可能不同)
lo
解决思路:
- 在/etc/sysconfig/network-scripts/下创建ifcfg-eth0配置文件, 并填入以下内容:
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DEVICE=eth0
TYPE=Ethernet
IPADDR=192.168.191.131 # ip地址
PREFIX=24
NETMASK=255.255.255.0 # 子网掩码
NETWORK=192.168.191.0 # ip段
GATEWAY=192.168.191.2 # 网关地址
BROADCAST=192.168.191.255 # 广播地址, 网关地址最后一位换成255
DEFROUTE=yes
ONBOOT=yes
USERCTL=yes
BOOTPROTO=static
NAME=eth0
IPV4_FAILURE_FATAL=yes
HWADDR=00:0c:29:b4:e3:22 # 这里填执行ifconfig命令后, ens33(这里名称可能不同)的mac地址
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2. 编辑/etc/sysconfig/network
NETWORKING=yes
HOSTNAME=localhost.localdomain
GATEWAY=192.168.191.2 #网关地址
3. 编辑/etc/resolv.conf
nameserver 192.168.191.2
nameserver 114.114.114.114
4.重启网络服务
systemctl restart network.service #重启网络服务
systemctl status network.service #查看网络服务状态
如果重启网路服务失败, 或者执行systemctl status network.service命令提示错误
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Starting network (via systemctl): Job for network.service failed because the control process exited with error code. See “systemctl status network.service” and “journalctl -xe” for details
[root@localhost ~]# systemctl status network.service
● network.service - LSB: Bring up/down networking
Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)
Active: failed (Result: exit-code) since 日 2017-02-12 21:57:48 CST; 20s ago
Docs: man:systemd-sysv-generator(8)
Process: 3170 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)
2月 12 21:57:48 localhost.localdomain network[3170]: RTNETLINK answers: File exists
2月 12 21:57:48 localhost.localdomain network[3170]: RTNETLINK answers: File exists
2月 12 21:57:48 localhost.localdomain network[3170]: RTNETLINK answers: File exists
2月 12 21:57:48 localhost.localdomain network[3170]: RTNETLINK answers: File exists
2月 12 21:57:48 localhost.localdomain network[3170]: RTNETLINK answers: File exists
2月 12 21:57:48 localhost.localdomain network[3170]: RTNETLINK answers: File exists
2月 12 21:57:48 localhost.localdomain systemd[1]: network.service: control process exited, code=exited status=1
2月 12 21:57:48 localhost.localdomain systemd[1]: Failed to start LSB: Bring up/down networking.
2月 12 21:57:48 localhost.localdomain systemd[1]: Unit network.service entered failed state.
2月 12 21:57:48 localhost.localdomain systemd[1]: network.service failed.
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那么删掉/etc/sysconfig/network-scripts/下多余的ifcfg-配置, 保留ifcfg-eth0和ifcfg-lo这两个配置
再次执行systemctl restart network.service 重启网络服务, 这时, 应该就不会报错了
提示这种错误, 还有可能是步骤一里面标红的地方 mac地址填错了
如果这么做局域网内可以访问, 但是无法访问外网的话, VMware里面虚拟机设置->网络适配器->从NAT模式改为桥接模式
IP地址填写为和宿主机在一个IP段, 网关填写路由器IP
关闭防火墙命令
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
systemctl start iptables.service #打开防火墙
systemctl stop iptables.service #关闭防火墙