確認環境
- CentOS 6.3 x86_64 on VMware
- 同一セグメントにつながるNICを2枚予め準備
1. 前準備
(1) NetworkManagerを停止
# service NetworkManager stop NetworkManager デーモンを停止中: [ OK ](2) NetworkManagerの無効化
# chkconfig NetworkManager off # chkconfig --list | grep NetworkManager NetworkManager 0:off 1:off 2:off 3:off 4:off 5:off 6:off※すべてoffであることを確認
2. NIC冗長化の定義
(1) /etc/modprobe.d/bonding の作成
# cat /etc/modprobe.d/bonding.conf
alias bond0 bonding
options bonding mode=1 miimon=100
(2) /etc/sysconfig/network-scripts/ifcfg-eth0 の編集# cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth0" BOOTPROTO="none" ONBOOT=no HWADDR=00:0C:29:87:23:5D USERCTL=no MASTER=bond0 SLAVE=yes(3) /etc/sysconfig/network-scripts/ifcfg-eth1 の作成
# cat /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE="eth1" BOOTPROTO="none" ONBOOT=no HWADDR=00:0C:29:87:23:67 USERCTL=no MASTER=bond0 SLAVE=yes3. bonding有効化
3. 定義有効化
# service network restart ...
4. 動作確認
(1) ipコマンドによる状態の確認
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast maste
r bond0 state UP qlen 1000
link/ether 00:0c:29:87:23:5d brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast maste
r bond0 state UP qlen 1000
link/ether 00:0c:29:87:23:5d brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP
link/ether 00:0c:29:87:23:5d brd ff:ff:ff:ff:ff:ff
inet 192.168.11.6/24 brd 192.168.11.255 scope global bond0
inet6 fe80::20c:29ff:fe87:235d/64 scope link
valid_lft forever preferred_lft forever
(2) /proc/net/bondingによる状態の確認# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: eth0 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth0 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:87:23:5d Slave queue ID: 0 Slave Interface: eth1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:87:23:67 Slave queue ID: 0
(2) 外部へのping
# ping 192.168.11.1 PING 192.168.11.1 (192.168.11.1) 56(84) bytes of data. 64 bytes from 192.168.11.1: icmp_seq=1 ttl=64 time=5.97 ms 64 bytes from 192.168.11.1: icmp_seq=2 ttl=64 time=1.29 ms 64 bytes from 192.168.11.1: icmp_seq=3 ttl=64 time=1.79 ms 64 bytes from 192.168.11.1: icmp_seq=4 ttl=64 time=1.04 ms 64 bytes from 192.168.11.1: icmp_seq=5 ttl=64 time=0.909 ms 64 bytes from 192.168.11.1: icmp_seq=6 ttl=64 time=0.979 ms ^C
