CentOS7 bonding

CentOS 7 nmcli를 이용한 본딩 방법

 

1. 본딩에 사용할 디바이스 확인

# nmcli dev

DEVICE       TYPE      STATE      CONNECTION          
eno16777736  ethernet  connected  ethernet-eno16777736
eno33554976  ethernet  connected  ethernet-eno33554976

 

 

2. 기존 Connection 확인 후 삭제

# nmcli con
NAME                  UUID                                  TYPE            DEVICE     
ethernet-eno33554976  e6b99dfd-f18f-4b85-bcf6-c79adb8676d7  802-3-ethernet  eno33554976
ethernet-eno16777736  f8a9db6c-2549-4cc3-a3ba-24703e521f55  802-3-ethernet  eno16777736

 

# nmcli con del ethernet-eno33554976

# nmcli con del ethernet-eno16777736

 

# nmcli con
NAME         UUID                  TYPE            DEVICE

 

3. 본딩 인터페이스 추가 하기

# nmcli con add type bond con-name bond0 ifname bond0 mode active-backup
Connection 'bond0' (7e9ac222-5445-484d-9aaa-81c9681980bb) successfully added.

 

4. 만들어진 본딩 인터페이스 bond0에 ip 수동 설정 (생략하면 디폴트로 dhcp가 구성 된다)

# nmcli con mod bond0 ipv4.addresses 192.168.3.125/24
# nmcli con mod bond0 ipv4.gateway 192.168.3.1
# nmcli con mod bond0 ipv4.method manual

 

5. 슬레이브 인터페이스 추가 (1번에서 확인한 디바이스 이름 사용)

# nmcli con add type bond-slave con-name bond0-eth0 ifname eno16777736 master bond0
Connection 'bond0-eth0' (29b2492c-222f-43fe-a8cd-da1ab35f9131) successfully added.

# nmcli con add type bond-slave con-name bond0-eth1 ifname eno33554976 master bond0
Connection 'bond0-eth1' (d9fce37a-fc58-4210-b9fc-601316cb031d) successfully added.

 

6. bond0 인터페이스를 up 시킨다

# nmcli con up bond0
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/6)

 

7. Connection 정보 확인

# nmcli con
NAME          UUID                                                  TYPE               DEVICE     
bond0-eth1   d9fce37a-fc58-4210-b9fc-601316cb031d    802-3-ethernet  eno33554976
bond0-eth0   29b2492c-222f-43fe-a8cd-da1ab35f9131    802-3-ethernet  eno16777736
bond0          7e9ac222-5445-484d-9aaa-81c9681980bb  bond               bond0 

 

# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eno16777736: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP mode DEFAULT qlen 1000
    link/ether 00:0c:29:2f:ba:26 brd ff:ff:ff:ff:ff:ff
3: eno33554976: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP mode DEFAULT qlen 1000
    link/ether 00:0c:29:2f:ba:26 brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
    link/ether 00:0c:29:2f:ba:26 brd ff:ff:ff:ff:ff:ff

 

 # ifconfig bond0
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>  mtu 1500
        inet 192.168.3.125  netmask 255.255.255.0  broadcast 192.168.3.255
        inet6 fe80::20c:29ff:fe2f:ba26  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2f:ba:26  txqueuelen 0  (Ethernet)
        RX packets 89  bytes 10605 (10.3 KiB)
        RX errors 0  dropped 2  overruns 0  frame 0
        TX packets 62  bytes 5692 (5.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

# 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: eno16777736
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

 

Slave Interface: eno33554976
MII Status: down
Speed: Unknown
Duplex: Unknown
Link Failure Count: 2
Permanent HW addr: 00:0c:29:2f:ba:30
Slave queue ID: 0

 

Slave Interface: eno16777736
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:0c:29:2f:ba:26
Slave queue ID: 0

 

 

 

음.. 그런데 통신이 안된다.. nmcli con에서도 bond0가 2개로 보이고..

아무래도 본딩을 이것저것 만들었다 지웠다하니 뭔가 꼬인거 같은데

여튼 재부팅 하니 잘된다. 하나씩 연결 끊어봐도 핑도 잘되고.

잘되면 된거지 뭐 -_-a

 

끝!

 

PS

1. nmtui로 하면 좀 더 직관적이긴한데 탭키로 왔다리 갔다리 하는게 너무 귀찮다.

2. 기존처럼 ifcfg 파일을 직접 수정해도 된다.(고 RHEL 메뉴얼에 나와있지만 안해봄.. 귀찮....)