CentOS7和RHEL7配置主备模式端口聚合实现冗余目的
一、实施步骤
1、备份网卡目录# cp -r /etc/sysconfig/network-scripts/ /etc/sysconfig/network-scripts.bak
2、查看需要聚合的端口是否为“UP”状态:ethtool eth0 |grep "Link detected: yes" 如未激活则使用命令 # ifup eth0
3、创建脚本文件
4、增加可执行权限 chmox +x test.sh
5、运行脚本文件 ./test.sh
6、由于NetWorkManager服务和network服务两者有冲突,需关闭NetWorkManager服务,并永久关闭,再重启network服务。
7、脚本执行完毕查看聚合信息是否成功cat /proc/net/bonding/bond0
二、回退方案
1、查看状态聚合状态
# cat /proc/net/bonding/bond0
2、删除聚合端口
# rmmod bond0
3、把之前备份网卡目录覆盖掉当前的网卡目录
# cp -r /etc/sysconfig/network-scripts.bak /etc/sysconfig/network-scripts
# /etc/init.d/network restart
三、聚合脚本
1、主备模式脚本
为容错设定 active-backup 策略。数据传输将会通过第一个可用的 slave 接口接收和发送。只有在当前使用的绑定 slave 接口失败时才会使用另一个绑定 slave 接口。
#!/bin/bash ethtool enp7s0f0 |grep "Link detected: yes"> /dev/null if [ $? -ne 0 ] ;then echo Can not detect the link of enp7s0f0 exit 1 fi ethtool enp7s0f1 |grep "Link detected: yes"> /dev/null if [ $? -ne 0 ] ;then echo Can not detect the link of enp7s0f1 exit 1 fi set_rhel7_bond_config () { unset OPTIND while getopts \'b:m:i:n:g:s:t:\' opt; do case $opt in b) bond_name=$OPTARG;; m) bond_mode=$OPTARG;; i) ip=$OPTARG;; n) mask=$OPTARG;; g) gateway=$OPTARG;; s) bond_opts=$OPTARG;; t) network_type=$OPTARG;; esac done bond_config_file="/etc/sysconfig/network-scripts/ifcfg-$bond_name" echo $bond_config_file if [ -f $bond_config_file ]; then echo "Backup original $bond_config_file to bondhelper.$bond_name" mv $bond_config_file /etc/sysconfig/network-scripts/bondhelper.$bond_name -f fi if [ "static" == $network_type ]; then if [ ! -n "$gateway" ]; then ip_setting="IPADDR=$ip NETMASK=$mask USERCTL=no" else ip_setting="IPADDR=$ip NETMASK=$mask GATEWAY=$gateway USERCTL=no" fi else ip_setting="USERCTL=no" fi cat << EOF > $bond_config_file DEVICE=$bond_name ONBOOT=yes BOOTPROTO=$network_type $ip_setting BONDING_OPTS="mode=$bond_mode $bond_opts" NM_CONTROLLED=yes EOF } set_rhel7_bond_config -b bond0 -m 1 -i 192.168.43.51 -n 255.255.255.128 -g 192.168.43.2 -t static -s "miimon=100 primary=enp7s0f0" set_rhel7_ethx_config() { bond_name=$1 eth_name=$2 eth_config_file="/etc/sysconfig/network-scripts/ifcfg-$eth_name" if [ -f $eth_config_file ]; then echo "Backup original $eth_config_file to bondhelper.$eth_name" mv $eth_config_file /etc/sysconfig/network-scripts/bondhelper.$eth_name -f fi cat << EOF > $eth_config_file DEVICE=$eth_name BOOTPROTO=none ONBOOT=yes MASTER=$bond_name SLAVE=yes USERCTL=no NM_CONTROLLED=yes EOF } set_rhel7_ethx_config bond0 enp7s0f0 set_rhel7_ethx_config bond0 enp7s0f1 echo "Network service will be restarted." service network restart cat /proc/net/bonding/bond0
2、负载均衡脚本
为容错和负载均衡设定 round-robin 策略。数据传输将会从第一个可用的 slave 接口开始,顺序地向每个绑定的接口发送和接收。
#!/ bin/bash ethtool ens1f0 |grep "Link detected: yes"> /dev/null if [ $? -ne 0 ] ;then echo Can not detect the link of ens1f0 exit 1 fi ethtool ens2f0 |grep "Link detected: yes"> /dev/null if [ $? -ne 0 ] ;then echo Can not detect the link of ens2f0 exit 1 fi set_rhel7_bond_config () { unset OPTIND while getopts \'b:m:i:n:g:s:t:\' opt; do case $opt in b) bond_name =$OPTARG;; m) bond_mode =$OPTARG;; i) ip =$OPTARG;; n) mask =$OPTARG;; g) gateway =$OPTARG;; s) bond_opts =$OPTARG;; t) network_type =$OPTARG;; esac done bond_config_file="/etc/sysconfig/network-scripts/ifcfg-$bond_name" echo $bond_config_file if [ -f $bond_config_file ]; then echo "Backup original $bond_config_file to bondhelper.$bond_name" mv $bond_config_file /etc/sysconfig/network-scripts/bondhelper.$bond_name -f fi if [ "static" == $network_type ]; then if [! -n "$gateway"]; then ip_setting="IPADDR=$ip NETMASK=$mask USERCTL=no" else ip_setting="IPADDR=$ip NETMASK=$mask GATEWAY=$gateway USERCTL=no" fi else ip_setting="USERCTL=no" fi cat << EOF > $bond_config_file DEVICE=$bond_name ONBOOT=yes BOOTPROTO=$network_type $ip_setting BONDING_OPTS="mode=$bond_mode $bond_opts" NM_CONTROLLED=yes EOF } set_rhel7_bond_config -b bond0 -m 0 -i 192.168.43.51 -n 255.255.255.0 -g 192.168.43.254 -t static -s "miimon=100" set_rhel7_ethx_ config( ) { bond_name=$1 eth_name=$2 eth_config_file="/etc/sysconfig/network-scripts/ifcfg-$eth_name" if [ -f $eth_config_file ]; then echo "Backup original $eth_config_file to bondhelper.$eth_name" mv $eth_config_file /etc/sysconfig/network-scripts/bondhelper.$eth_name -f fi cat << EOF > $eth_config_file DEVICE=$eth_name BOOTPROTO=none ONBOOT=yes MASTER=$bond_name SLAVE=yes USERCTL=no NM_CONTROLLED=yes EOF } set_rhel7_ethx_config bond0 ens1f0 set_rhel7_ethx_config bond0 ens2f0 echo "Network service will be restarted." service network restart cat /proc/net/bonding/ bond0