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RHCE练习题 4.配置链路聚合 四种方法

2017-01-02 22:22 495 查看

题目 配置链路聚合

在server0和desktop0之间按一下要求配置：

- 此链路使用接口eth1和eth2

- 此链路在一个接口失效时仍然能工作

- 此链路在server0使用下面的地址 192.168.0.101/255.255.255.0

- 此链路在desktop0使用下面的地址 192.168.0.102/255.255.255.0

- 此链路在系统重启之后依然保持正常状态

接口现况

[root@server0 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:00:00:0b brd ff:ff:ff:ff:ff:ff
inet 172.25.0.11/24 brd 172.25.0.255 scope global dynamic eth0
valid_lft 17060sec preferred_lft 17060sec
inet6 fe80::5054:ff:fe00:b/64 scope link
valid_lft forever preferred_lft forever
4: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 26:d4:ed:35:28:b8 brd ff:ff:ff:ff:ff:ff
6: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 9a:4f:bb:1d:db:17 brd ff:ff:ff:ff:ff:ff


操作

操作要在server0和desktop0上均配置。但是以下只用server0做演示。方法都一样的。

方法1 
nmcli
Command-Line 工具

添加一个team类型的接口，配置名叫team0，接口名叫team0，JSON配置，由于需要一个接口失效的时候，依然能工作，所以指定的是 activebackup。

[root@server0 ~]# nmcli connection add type team con-name team0 ifname team0 config '{"runner":{"name":"activebackup"}}


将eth1和eth2添加进，team0。

[root@server0 ~]# nmcli connection add type team-slave con-name team0-eth1 ifname eth1 master team0
[root@server0 ~]# nmcli connection add type team-slave con-name team0-eth2 ifname eth2 master team0


修改IP地址

[root@server0 ~]# nmcli connection modify team0 ipv4.method manual ipv4.addresses '192.168.0.101/24'


重启网络服务 
systemctl restart network


方法2 
nmtui

[root@server0 ~]# nmtui
 -> 
[Edit a connection]
-> 
[Add]
-> 
Team
-> 
[create]


- 创建一个team类型接口

profile name
=> 
team0


- 配置名

Device
=> * 
team0
*

- 设备名

TEAM Slaves [Add]
-> 
Ethernet
-> 
[create]
#添加从网卡eth1

- 
profile name
=> 
team0-eth1


- 
Device
=> 
eth1


- [OK]

TEAM Slaves [Add]
-> 
Ethernet
-> 
[create]
#添加从网卡eth2

- 
profile name
=> 
team0-eth2


- 
Device
=> 
eth2


- [OK]

JSON configuration
-> 
[Add]
=> 
{"runner":{"name":"activebackup"}}


- 添加JSON配置

IPv4 CONFIGURATION
=> 
Manual
 -> 
[show]
#配置IP

- 
[Add]
-> 
Addresses
=> 
192.168.0.101/24


[ok]


[root@server0 ~]# systemctl restart network
重启网络服务生效

操作截图





方法3 
nm-connection-editor
GUI图形界面配置

其实和nmtui配置大同小异。就是界面不太一样。懒得重复，不赘述.

需要支持xdmcp服务。1. linux ssh连接的时候加 -X选项 2. windows用Xmanager 3. 直接进图形化的操作系统操作。

[root@server0 ~]# nm-connection-editor
打开图形化界面





方法4 直接新建配置文件

新建一个team的配置文件
[root@server0 ~]# vim /etc/sysconfig/network-scripts/ifcfg-team0


NAME=team0          #配置名
DEVICE=team0        #设备名
DEVICETYPE=Team     #网卡类型
TEAM_CONFIG="{\"runner\":{\"name\":\"activebackup\"}}"       #JSON配置
BOOTPROTO=none         #不启用
IPADDR0=192.168.0.101  #配置IP
PREFIX0=24             #掩码
ONBOOT=yes             #开机启用


添加从网卡eth1配置 
[root@server0 ~]# cat /etc/sysconfig/network-scripts/ifcfg-team0-eth1


NAME=team0-eth1
DEVICE=eth1
BOOTPROTO=none   #其实这里就是dhcp也无所谓，只要DEVICETYPE类型是teamport 就获取不了IP
ONBOOT=yes
TEAM_MASTER=team0
DEVICETYPE=TeamPort


添加从网卡eth2配置 
[root@server0 ~]# cat /etc/sysconfig/network-scripts/ifcfg-team0-eth2


NAME=team0-eth2
DEVICE=eth2
BOOTPROTO=none
ONBOOT=yes
TEAM_MASTER=team0
DEVICETYPE=TeamPort


[root@server0 ~]#  systemctl restart network
重启网络服务

如果存在eth1和eth2其它配置文件，建议删除，以免引起冲突。

检验 
ip addr
和 
teamdctl <team name> state

#查看网卡状态
[root@server0 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:00:00:0b brd ff:ff:ff:ff:ff:ff
inet 172.25.0.11/24 brd 172.25.0.255 scope global dynamic eth0
valid_lft 21404sec preferred_lft 21404sec
inet6 fe80::5054:ff:fe00:b/64 scope link
valid_lft forever preferred_lft forever
4: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team0 state UP qlen 1000
link/ether 26:d4:ed:35:28:b8 brd ff:ff:ff:ff:ff:ff
6: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team0 state UP qlen 1000
link/ether 26:d4:ed:35:28:b8 brd ff:ff:ff:ff:ff:ff
9: team0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 26:d4:ed:35:28:b8 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.101/24 brd 192.168.0.255 scope global team0
valid_lft forever preferred_lft forever
inet6 fe80::3cca:85ff:fe6e:a8e8/64 scope link
valid_lft forever preferred_lft forever
# 查看team0详细状态
[root@server0 ~]# teamdctl team0 state
setup:
runner: activebackup
ports:
eth1
link watches:
link summary: up
instance[link_watch_0]:
name: ethtool
link: up
eth2
link watches:
link summary: up
instance[link_watch_0]:
name: ethtool
link: up
runner:
active port: eth1


补充 常用的网卡绑定模式

类型描述
activebackup自动备援模式
loadbalance负载均衡模式
roundrobin轮换模式
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