2023.6.7 02.⽹路进阶管理

1.1 Linux7配置bond聚合链路

1.2 LInux7配置team聚合链路

1.3 Linux7配置brige桥接⽹络

1.4 Linux6配置bond链路聚合

Atuor: Wing

 

管理聚合链路和桥接⽹络s

通过⽹⼝绑定技术 Bonding ,实现⽹络冗余, 负载均衡, 从⽽提升⽹络传输能⼒,避免⽹络链路单点故障, 达到⾼可⽤

⾼可靠的⽬的。

Bonding 的两种绑定⼯作模式：实际上有7种，其他不常⽤

模式0 balance-rr 负载轮询（

 

2⽹卡单独都是100MB，聚合为1个⽹络传输带宽200MB）

模式1 active-backup ⾼可⽤(其中⼀条线若断线，其他线路将会⾃动备援)

1.1 Linux7配置bond聚合链路

完成 bond0, balance-rr

--> eth0 ----\

app --发送数据到--> bond0 <---> switch

--> eth1 ----/

centos7`系统配置链路聚合`bond

[root@wing ~]# nmcli device

DEVICE TYPE STATE CONNECTION

ens32 ethernet connected ens32

ens36 ethernet disconnected --

ens37 ethernet disconnected --

//创建bond0, 模式为balance-rr

[root@wing ~]# nmcli connection add type bond \

mode balance-rr con-name bond0 ifname bond0 \

ipv4.method manual \

ipv4.addresses 192.168.69.223/24 \

ipv4.gateway 192.168.69.1 \

ipv4.dns 8.8.8.8

//添加物理⽹卡连接⾄bond0

[root@wing ~]# nmcli connection add type bond-slave \

con-name bond-slave36 ifname ens36 master bond0

 

[root@wing ~]# nmcli connection add type bond-slave \

con-name bond-slave37 ifname ens37 master bond0

//查看bond配置信息

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

//关闭ens36⽹卡, 测试bond0是否正常

[root@wing ~]# nmcli device disconnect ens36

完成 bond1, active-backup

[root@wing ~]# nmcli device

DEVICE TYPE STATE CONNECTION

ens32 ethernet connected ens32

ens36 ethernet disconnected --

ens37 ethernet disconnected --

 

//创建bond1相关设备

[root@wing ~]# nmcli connection add type bond \

con-name bond1 ifname bond1 mode active-backup \

ipv4.method manual ipv4.addresses '192.168.69.222/24' \

ipv4.gateway='192.168.69.2' ipv4.dns='192.168.69.2'

//添加连接⾄bond1

[root@wing ~]# nmcli connection add type bond-slave \

con-name bond-slave36 ifname ens36 master bond1

[root@wing ~]# nmcli connection add type bond-slave \

con-name bond-slave37 ifname ens37 master bond1

//启⽤相关连接

[root@wing ~]# nmcli connection up bond1

[root@wing ~]# nmcli connection up bond-slave36

[root@wing ~]# nmcli connection up bond-slave37

//验证

[root@wing ~]# cat /proc/net/bonding/bond1

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

Bonding Mode: fault-tolerance (active-backup)

Primary Slave: None

Currently Active Slave: ens36 //⽬前是ens36⽹卡提供⽀撑

MII Status: up

MII Polling Interval (ms): 100

Up Delay (ms): 0

Down Delay (ms): 0

Slave Interface: ens36

 

1.2 LInux7配置team聚合链路

centos7/rhce7 使⽤ teaming 实现聚合链路,能够提供⽹卡绑定之后的⽹络吞吐性能,并且提供⽹卡的故障切换处

理能⼒。

Team 是基于⼀个⼩型内核驱动实现聚合链路，在⽤户层提供 teamd 命令实现链路管理。

teamd 可以实现以下模式的聚合链路

broadcast ⼴播容错

roundrobin 负载轮询

activebackup 主备(必考)

loadbalance 负载均衡

lacp 需要交换机⽀持lacp协议

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:34:92:06

Slave queue ID: 0

Slave Interface: ens37

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:34:92:10

Slave queue ID: 0

//停⽌ens36物理⽹卡设备

[root@wing ~]# nmcli device disconnect ens36

//ens37物理⽹卡设备会进⾏⾃动切换

[root@wing ~]# grep "Currently Active Slave" /proc/net/bonding/bond1

Currently Active Slave: ens37

//考试建议使⽤命令⾏配置，图形界⾯配置不稳定

[root@wing ~]# nmcli connection add type team con-name team0 ifname team0 \

config '{"runner":{"name":"activebackup"}}' \

ipv4.addresses 192.168.56.111/24 \

ipv4.gateway 192.168.56.2 \

ipv4.dns 192.168.56.2 ipv4.method manual

[root@wing ~]# nmcli connection add type team-slave \

con-name team0-port1 ifname eth1 master team0

[root@wing ~]# nmcli connection add type team-slave \

con-name team0-port2 ifname eth2 master team0

 

动态修改team模式

1.3 Linux7配置brige桥接⽹络

建⽴桥接接⼝

1.4 Linux6配置bond链路聚合

//检查team0状态

[root@wing ~]# ping -I team0 192.168.56.1

[root@wing ~]# teamdctl team0 state

//断掉后检测

[root@wing ~]# nmcli dev disconnect eth1

[root@wing ~]# teamdctl team0 state

// 导出配置进⾏修改 (man teamd.conf)

[root@wing ~]# teamdctl team0 config dump > /tmp/team.conf

[root@wing ~]# vim /tmp/team.conf

//以最新修改的配置选项修改team0属性

[root@wing ~]# nmcli con mod team0 team.config /tmp/team.conf

//修改之后需要重启team0

[root@wing ~]# nmcli connection down team0;nmcli connection up team0

[root@wing ~]# nmcli connection up team0-port1

[root@wing ~]# nmcli connection up team0-port2

+------eth0-----+

| | |

| [ br0 ] |

| | |

| +--eth0--+ |

| | vm | |

| +--------+ |

+---------------+

创建桥接⽹络br1

[root@wing ~]# nmcli connection add type bridge \

con-name br1 ifname br1 \

ipv4.addresses 192.168.56.222/24 ipv4.method manual

桥接⾄eth1

[root@wing ~]# nmcli connection add type bridge-slave \

con-name br1-port1 ifname eth1 master br1

[root@wing ~]# ping -I br1 192.168.56.1

[root@wing ~]# brctl show

 

1.4 Linux6配置bond链路聚合

适⽤于 RedHat6 以及 CentOS6

 

//1.创建绑定⽹卡配置⽂件

[root@wing ~]# cat ifcfg-bond0

DEVICE=bond0

TYPE=Ethernet

ONBOOT=yes

USERCTL=no

BOOTPROTO=static

IPADDR=192.168.56.200

NETMASK=255.255.255.0

GATEWAY=192.168.56.2

DNS1=192.168.56.2

BONDING_OPTS="mode=0 miimon=50" #如果使⽤模式1将mode修改为1即可

//2.修改eth0和eth1⽹卡配置⽂件

[root@wing ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

TYPE=Ethernet

ONBOOT=yes

USERCTL=no

BOOTPROTO=none

MASTER=bond0

SLAVE=yes

[root@wing ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1

TYPE=Ethernet

ONBOOT=yes

USERCTL=no

BOOTPROTO=none

MASTER=bond0

SLAVE=yes

//3.添加驱动⽀持bond0

[root@wing ~]# vim /etc/modprobe.d/bonding.conf

alias bond0 bonding