[Linux Setting] CentOS 6.9 Setting Guide : 기본설정 : 네트워크 설정(bonding)

[Linux Setting] CentOS 6.9 Setting Guide : 기본설정 : 네트워크 설정(bonding)

1. 용도 및 목적

Linux 설치 및 다양한 테스트 환경을 만들기 위함

네트워크 이중화 및 연결을 위한 NIC Setting 및 테스트

2. 설치 환경

-O/S

 Windows 10 Pro , VirtualBox(CentOS6.9)

-H/W

 Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz

 RAM 8GB

 SDD 256GB

3. 로그 인 후 아래 절차를 따른다.

-root로 로그인한다

ID : root, PW : 기존에설정한PW

4. 네트워크 이중화 구성 (NIC 설정)

인터페이스 bond0 생성 (fail_over_mac=1 옵션은 리얼장비에서 보통 안쓰나, Virtualbox 에서 저 옵션을 안하면 인터페이스 절체가 안된다, 추측으로는 실제 스위치가 아닌 가상머신의 네트워크 어댑터 문제로 보인다)

-bond0 인터페이스 생성

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0

IPADDR=192.168.35.11

PREFIX=24

ONBOOT=yes

BOOTPROTO=none

BONDING_OPTS="mode=1 miimon=100 fail_over_mac=1" 

GATEWAY=192.168.35.1

-bond0 에 eth0 멤버 추가

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

HWADDR=08:00:27:AB:3F:36

TYPE=Ethernet

UUID=e76a3e8d-9274-4360-aec6-2f21d53a862b

ONBOOT=yes

BOOTPROTO=none

MASTER=bond0

SLAVE=yes

-bond0 에 eth1 멤버 추가

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1

HWADDR=08:00:27:E6:5B:1D

TYPE=Ethernet

UUID=8cc4944b-d06d-4b38-92a8-0581f8c44e60

ONBOOT=yes

BOOTPROTO=none

MASTER=bond0

SLAVE=yes

-bond0 상태 확인

[root@localhost ~]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active)

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: 08:00:27:ab:3f:36

Slave queue ID: 0

Slave Interface: eth1

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 08:00:27:e6:5b:1d

Slave queue ID: 0

-network 재시작

#service network restart

4.interface failover 테스트

-현재 상태확인(Active : eth0)

[root@localhost ~]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active)

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: 08:00:27:ab:3f:36

Slave queue ID: 0

Slave Interface: eth1

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 08:00:27:e6:5b:1d

Slave queue ID: 0

-수동으로 eth0을 다운시킨다.

[root@localhost ~]# ifdown eth0

-절체 후 상태확인(Active : eth1)

[root@localhost ~]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active)

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: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 08:00:27:e6:5b:1d

Slave queue ID: 0