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Linux system how to achieve double network card binding, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

The work is mainly based on SuSE. Network, as one of the most important links in the whole high availability architecture, is generally bound by dual network cards physically, and the default mode=1 (active-backup) is usually used as the active / standby relationship.

In the production server that recently tested big data, considering the priority of performance, the binding mode is set to mode=6 (balance-alb), and the traffic is doubled using load balancer. At the same time, in the testing process of SuSE HA architecture from Skybility HA to Corosync/Openais+Pacemaker, mode=0 (balance-rr) is adopted in cooperation with network switch Port Channel link aggregation, and network interruption 0 packet loss is realized by means of balanced polling.

Basic configuration information

Three commonly used Bond modes

The configuration process takes mode=6 as an example. For the other 7 modes, please refer to the extension.

Mode=0: load balancing mode, with automatic backup, but requires "Switch" support and setting. Mode=1: automatic backup mode. If one line is disconnected, the other lines will be backed up automatically. Mode=6: load balancing mode, automatic backup, no need for "Switch" support and setting.

Physical interface

CentOS version

The code is as follows:

Datanode01:~ > cat / etc/redhat-release

CentOS release 6.4 (Final)

Disable NetworkManager

The code is as follows:

# disable NetworkManager immediately and disable boot self-startup

/ etc/init.d/NetworkManager stop

Chkconfig NetworkManager off

/ etc/init.d/network restart

Close iptables and selinux (optional)

The code is as follows:

# close iptables immediately and disable boot self-startup

/ etc/init.d/iptables stop

Chkconfig iptables off

# close selinux immediately and disable it permanently

Setenforce 0

Sed-I's Union SELINUXPRENTENTFORCING sed'/ etc/selinux/config

Modify hostname

The code is as follows:

Vi / etc/sysconfig/network

NETWORKING=yes

HOSTNAME=namenode01

# refresh takes effect

Hostname namnode01

Source / etc/sysconfig/network

Configure IP

Private address

The code is as follows:

Cd / etc/sysconfig/network-scripts

[root@datanode09 network-scripts] # cat ifcfg-eth4

DEVICE=eth4

ONBOOT=yes

BOOTPROTO=none

IPADDR=10.129.46.19

NETMASK=255.255.255.0

IPV6INIT=no

USERCTL=no

Double network card binding

The code is as follows:

Cd / etc/sysconfig/network-scripts

# Editing eth0

Cat > ifcfg-eth0 ifcfg-eth3 ifcfg-bond0 / etc/modprobe.conf > / etc/rc.local

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