Centos7 配置静态ip及问题处理

进入对应的网卡配置目录

首先进入root用户

$sudo su
$cd /etc/sysconfig/network-scripts/

根据具体的网卡的情况编辑文件

vim ifcfg-eno1

完整配置示例

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
#BOOTPROTO=dhcp
BOOTPROTO=static    # 修改为static静态
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
HWADDR=xx:xx:xx:xx:xx:xx    # mac地址
NAME=eno2
UUID=34cad817-53a4-43e4-8747-c1e911d864f3
DEVICE=eno2
#ONBOOT=no
ONBOOT=yes    # 开机自启

IPADDR=192.168.33.61    # ip地址
GATEWAY=192.168.33.1    # 网关
NETMASK=255.255.255.0    # 子网
DNS1=114.114.114.114    #DNS服务器地址
#DNS2=8.8.8.8

修改完配置文件后，记得重启网络服务

systemctl restart network

虚拟机可能执行命名可以，但是实体机可能会有问题

解决报错Failed to start LSB: Bring up/down networking：MAC地址导致

报错大致如下

[root@ansible-control ~]# systemctl start network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@ansible-control ~]# systemctl status network
● 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 2019-09-29 22:44:34 CST; 1s ago
Docs: man:systemd-sysv-generator(8)
Process: 5042 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

9月 29 22:44:34 ansible-control network[5042]: RTNETLINK answers: File exists
9月 29 22:44:34 ansible-control network[5042]: RTNETLINK answers: File exists
9月 29 22:44:34 ansible-control network[5042]: RTNETLINK answers: File exists
9月 29 22:44:34 ansible-control network[5042]: RTNETLINK answers: File exists
9月 29 22:44:34 ansible-control network[5042]: RTNETLINK answers: File exists
9月 29 22:44:34 ansible-control network[5042]: RTNETLINK answers: File exists
9月 29 22:44:34 ansible-control systemd[1]: network.service: control process exited, code=exited...s=1
9月 29 22:44:34 ansible-control systemd[1]: Failed to start LSB: Bring up/down networking.
9月 29 22:44:34 ansible-control systemd[1]: Unit network.service entered failed state.
9月 29 22:44:34 ansible-control systemd[1]: network.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

解决方法

关闭NetworkManager，罪魁祸首就是这个服务！

• 一、查看NetworkManager服务状态：

• 二、关闭NetworkManager，并设置开启默认不启动该服务：

  [root@ansible-control ~]# systemctl stop NetworkManager
  [root@ansible-control ~]# systemctl disable NetworkManager
  Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
  Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
  Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.

• 三、重启network服务

[root@ansible-control ~]# 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 2019-09-29 22:53:32 CST; 9s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 3620 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

发现还是报错，此时，我又百度了其它方法尝试，发现是MAC地址的问题

• 四、查询主机的硬件地址

• 五、修改/etc/sysconfig/network-scripts/ifcfg-配置_1文件

• 六、再次重启网络

[root@ansible-control ~]# systemctl restart network
[root@ansible-control ~]# systemctl status network

或者重启电脑，发现可以连接网络

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