CentOS 7网卡绑定 主备模式

更改主机名

hostnamectl set-hostname hadoopManger01

停止network服务

systemctl stop network.service

停止NetworkManager服务，并设置该服务开机不启动。NetworkManager不停止会导致配置网卡绑定之后network服务启动失败

systemctl stop NetworkManager
systemctl disable NetworkManager

检查开机自启动的程序

ls /etc/systemd/system/multi-user.target.wants/

更改网卡配置

cd /etc/sysconfig/network-scripts
mv ifcfg-em1 ifcfg-em1.bak
mv ifcfg-em2 ifcfg-em2.bak

vi ifcfg-bond0
DEVICE=bond0
BOOTPROTO=static
ONBOOT=yes
TYPE=Ethernet
IPADDR=172.16.20.11
NETMASK=255.255.255.128
GATEWAY=172.16.20.1
vi ifcfg-em1
	DEVICE=em1
	ONBOOT=yes
	BOOTPROTO=none
	MASTER=bond0
	SLAVE=yes
vi ifcfg-em2
	DEVICE=em2
	ONBOOT=yes
	BOOTPROTO=none
	MASTER=bond0
	SLAVE=yes

添加bonding模块

vi /etc/modprobe.d/bonding.conf
	alias bond0 bonding
	options bonding mode=1 miimon=50

用的mode