linux -- Ubuntu14.04及之后版本重启网卡不生效

Ubuntu14.04修改配置，重启网卡没有生效，出现如下问题：

service  networking restart //重启网络服务

stop: Job failed while stopping

start: Job is already running: networking



tail -f /var/log/upstart/networking.log //查看错误日志

Stopping or restarting the networking job is not supported.

Use ifdown & ifup to reconfigure desired interface.

 

从以上日志内容可以看出，传统的service重启和停止网络已经不再支持了，需要通过使用ifdown & ifup来实现相应的操作。

• 重启指定网卡

　　ifdown eth0 && ifup eth0

• 重启除lo网卡的所有网卡

　　ifdown --exclude=lo -a && sudo ifup --exclude=lo -a

• 配置桥接

# apt-get install bridge-utils

# cat /etc/network/interfaces

auto lo

iface lo inet loopback



auto eth0

iface eth0 inet manual



auto br0

iface br0 inet static

address 192.168.0.10

netmask 255.255.255.0

gateway 192.168.0.1

bridge_ports eth0

bridge_stp off

bridge_fd 0

bridge_maxwait 0

dns-nameservers 192.168.0.1

# ifup br0

# brctl  show

bridge name   bridge id       STP enabled interfaces

br0       8000.02000a0080e1   no      eth0