1. Enter cd /etc/sysconfig/network-scripts/
View catalog Ls
Check network card status ip a
2. Back up the network card configuration file
cp ifcfg-em1ifcfg-em1-bak
cp ifcfg-em2ifcfg-em2-bak
3. Create a network card binding (bond) file
vim ifcfg-bond0
Press i to edit and enter the following
TYPE=bond
DEVICE=bond0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.100.17
NETMASK=255.255.255.0
GATEWAY=192.168.100.1
BONDING_OPTS="mode=1 miimon=100"
After inputting, press ESC, then enter: wq to exit: q!
4. Modify the ifcfg-eth0 file as follows:
Press i to edit
TYPE=Ethernet
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
After inputting, press ESC, then enter: wq to exit: q!
Then modify the ifcfg-eth1 file as follows:
Press i to edit
TYPE=Ethernet
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
After inputting, press ESC, then enter: wq to exit: q!
5. Restart network service
systemctl restart network或者service network restart
6. Turn off the firewall
systemctl stop firewalld
7. Edit selinux files
vim /etc/selinux/config
Press i to edit
Change enforcing to disabled
After inputting, press ESC, then enter: wq to exit: q!
8. Turn off selinux firewall
setenforce 0
PS：
1. Change the network card name (to abc)
mv ifcfg-em1 ifcfg-abc
2. Delete the network card
rm –rf ifcfg-em1
3. Restart the network card service control window
systemctl stop NetworkManager ( letters are case sensitive)
systemctl disable NetworkManager (letters are case sensitive)
4. Firewall settings
Check the firewall status: systemctl status firewalld.service
Shut down: systemctl stop firewalld
Start: systemctl start firewalld
Automatically shut down at boot: systemctl disable firewalld
Start automatically at boot: systemctl enable firewalld
Check whether it starts at boot: chkconfig --list|grep network(RHLE6)