一、检查本地系统环境
1.检查系统版本
[root@Server001 ~]# cat /etc/os-release NAME="CentOS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="CentOS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7" HOME_URL="https://www.centos.org/" BUG_REPORT_URL="https://bugs.centos.org/" CENTOS_MANTISBT_PROJECT="CentOS-7" CENTOS_MANTISBT_PROJECT_VERSION="7" REDHAT_SUPPORT_PRODUCT="centos" REDHAT_SUPPORT_PRODUCT_VERSION="7"
2.查看服务器网卡
[root@Server001 network-scripts]# ifconfig -a bond0: flags=5123<UP,BROADCAST,MASTER,MULTICAST> mtu 1500 inet 192.168.30.122 netmask 255.255.255.0 broadcast 192.168.30.255 ether a6:ad:e5:84:f0:6e txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.3.55 netmask 255.255.255.0 broadcast 192.168.3.255 inet6 fe80::2a6e:d4ff:fe89:8720 prefixlen 64 scopeid 0x20<link> ether 28:6e:d4:89:87:20 txqueuelen 1000 (Ethernet) RX packets 2256 bytes 439140 (428.8 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 428 bytes 68770 (67.1 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 fe80::2a6e:d4ff:fe8a:3299 prefixlen 64 scopeid 0x20<link> ether 28:6e:d4:8a:32:99 txqueuelen 1000 (Ethernet) RX packets 1617 bytes 386452 (377.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 7 bytes 586 (586.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 fe80::2a6e:d4ff:fe88:f490 prefixlen 64 scopeid 0x20<link> ether 28:6e:d4:88:f4:90 txqueuelen 1000 (Ethernet) RX packets 1617 bytes 386452 (377.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 7 bytes 586 (586.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
二、创建网卡配置文件
1.进入网卡配置文件目录
[root@Server001 ~]# cd /etc/sysconfig/network-scripts/ [root@Server001 network-scripts]# ls ifcfg-bond0 ifdown-eth ifdown-ppp ifdown-tunnel ifup-ippp ifup-post ifup-TeamPort network-functions-ipv6 ifcfg-eth0 ifdown-ippp ifdown-routes ifup ifup-ipv6 ifup-ppp ifup-tunnel ifcfg-lo ifdown-ipv6 ifdown-sit ifup-aliases ifup-isdn ifup-routes ifup-wireless ifdown ifdown-isdn ifdown-Team ifup-bnep ifup-plip ifup-sit init.ipv6-global ifdown-bnep ifdown-post ifdown-TeamPort ifup-eth ifup-plusb ifup-Team network-functions
2.拷贝eth0的网卡配置文件
[root@Server001 network-scripts]# cp ifcfg-eth0 ifcfg-eth1 [root@Server001 network-scripts]# cp ifcfg-eth0 ifcfg-eth2 [root@Server001 network-scripts]# cp ifcfg-eth0 ifcfg-bond0
3.修改bond0网卡配置文件
[root@Server001 network-scripts]# cat ifcfg-bond0 DEVICE=bond0 BOOTPROTO=none TYPE=bond0 ONBOOT=yes IPADDR=192.168.30.122 NETMASK=255.255.255.0
4.修改eth1网卡配置文件
[root@Server001 network-scripts]# cat ifcfg-eth1 DEVICE=eth1 BOOTPROTO=none TYPE=Ethernet MASTER=bond0 SLAVE=yes
5.修改eth2网卡配置文件
[root@Server001 network-scripts]# cat ifcfg-eth2 DEVICE=eth2 BOOTPROTO=none TYPE=Ethernet MASTER=bond0 SLAVE=yes
三、创建bonding的配置文件
1.编辑bonding.conf
[root@node network-scripts]# vim /etc/modprobe.d/bonding.conf [root@node network-scripts]# cat /etc/modprobe.d/bonding.conf alias bond0 bonding options bonding mode=1 miimon=100
注:关于mode的说明 mode=0 //平衡循环 mode=1 //主备 mode=3 //广播 mode=4 //链路聚合
2.停止 NetworkManager 服务
systemctl stop NetworkManager systemctl disable NetworkManage
3.加载 bonding 模块
[root@Server001 network-scripts]# lsmod |grep bonding [root@Server001 network-scripts]# modprobe bonding [root@Server001 network-scripts]# lsmod |grep bonding bonding 152656 0
4.重启网络服务
systemctl restart network
四、查看网卡绑定情况
1.再次检查本地网卡
[root@Server001 network-scripts]# ifconfig bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST> mtu 1500 inet 192.168.30.122 netmask 255.255.255.0 broadcast 192.168.30.255 inet6 fe80::2a6e:d4ff:fe8a:3299 prefixlen 64 scopeid 0x20<link> ether 28:6e:d4:8a:32:99 txqueuelen 1000 (Ethernet) RX packets 2426 bytes 748394 (730.8 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 13 bytes 838 (838.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.3.55 netmask 255.255.255.0 broadcast 192.168.3.255 inet6 fe80::2a6e:d4ff:fe89:8720 prefixlen 64 scopeid 0x20<link> ether 28:6e:d4:89:87:20 txqueuelen 1000 (Ethernet) RX packets 2853 bytes 740694 (723.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 478 bytes 75189 (73.4 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth1: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST> mtu 1500 ether 28:6e:d4:8a:32:99 txqueuelen 1000 (Ethernet) RX packets 2229 bytes 689858 (673.6 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 13 bytes 838 (838.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST> mtu 1500 ether 28:6e:d4:8a:32:99 txqueuelen 1000 (Ethernet) RX packets 2243 bytes 690766 (674.5 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
2.查看网卡绑定状态
[root@Server001 network-scripts]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: eth1 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Speed: Unknown Duplex: Unknown Link Failure Count: 0 Permanent HW addr: 28:6e:d4:8a:32:99 Slave queue ID: 0 Slave Interface: eth2 MII Status: up Speed: Unknown Duplex: Unknown Link Failure Count: 0 Permanent HW addr: 28:6e:d4:88:f4:90 Slave queue ID: 0
五、测试网卡连通情况
1.本地客户端ping服务器
ping 192.168.30.122

六、关闭eth1网卡测试连通情况
1.关闭eth1网卡
[root@Server001 network-scripts]# ifdown eth1 [root@Server001 network-scripts]#
2.查看本地客户端连通情况
可以正常ping通
3.查看当前的bond0状态
当前活动网卡已经切换到eth2,eth2网卡提供服务
[root@Server001 network-scripts]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: eth2 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth2 MII Status: up Speed: Unknown Duplex: Unknown Link Failure Count: 0 Permanent HW addr: 28:6e:d4:88:f4:90 Slave queue ID: 0
七、关闭eth2网卡测试连通情况
1.开启eth1网卡,关闭eth2网卡
[root@Server001 network-scripts]# ifup eth1 [root@Server001 network-scripts]# ifdown eth2
2.测试本地客户端连通情况
可以正常ping通

3.查看当前的bond0状态
当前活动网卡已经切换到eth1,eth1网卡提供服务
[root@Server001 network-scripts]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: eth1 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Speed: Unknown Duplex: Unknown Link Failure Count: 0 Permanent HW addr: 28:6e:d4:8a:32:99 Slave queue ID: 0
原文始发于微信公众号(运维江湖客):Linux系统之Bonding网卡绑定配置方法
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