服務(wù)器維護(hù)CentOS 7.2 雙網(wǎng)卡綁定及相關(guān)問(wèn)題解決

2020-06-05 17:34 作者：艾銻無(wú)限 瀏覽量：

服務(wù)器維護(hù)小知識(shí)線上服務(wù)器，安裝CentOS 7.2 x64最小化安裝，需要做鏈路聚合，雙網(wǎng)卡綁定。在CentOS 6.x 和 CentOS 7上測(cè)試都OK，于是直接開(kāi)搞。

　　說(shuō)明下，以下環(huán)境是在虛擬機(jī)中實(shí)現(xiàn)的：

　　系統(tǒng)： CentOS 7.2 x64 最小化安裝。


eno16777736 ： 橋接網(wǎng)卡：10.0.0.11/24

剩下的兩張網(wǎng)卡準(zhǔn)備做綁定：

       eno33554984

       eno50332208

[root@linuxidc ~]# nmcli con sh 

NAME                UUID                                  TYPE            DEVICE      

Wired connection 2  bf0cf9b6-c7fb-4c0a-ada4-abfb650dd5f0  802-3-ethernet  --          

Wired connection 1  5b4e0b3e-c469-404c-8839-76d18442fc20  802-3-ethernet  --          

eno16777736         100e462e-c0d0-4271-9b5a-1c8e47ff0d03  802-3-ethernet  eno16777736

[root@linuxidc ~]# nmcli con del 5b4e0b3e-c469-404c-8839-76d18442fc20 bf0cf9b6-c7fb-4c0a-ada4-abfb650dd5f0

Connection 'Wired connection 1' (5b4e0b3e-c469-404c-8839-76d18442fc20) successfully deleted.

Connection 'Wired connection 2' (bf0cf9b6-c7fb-4c0a-ada4-abfb650dd5f0) successfully deleted.
 
[root@linuxidc ~]# nmcli con add type team ifname team0 con-name team0 config '{"runner":{"name":"roundrobin"}}'

Connection 'team0' (913f05c2-15d8-49a9-a35f-8bc5ee843c0c) successfully added.

[root@linuxidc ~]# nmcli con add type team-slave ifname eno50332208 con-name team0-port2 master team0

Connection 'team0-port2' (1583854c-1f85-4c76-8cc7-c643071d4b82) successfully added.

[root@linuxidc ~]# nmcli con mod team0 ipv4.address "192.168.121.100/24"

[root@linuxidc ~]# nmcli con mod team0 ipv4.method manual

 [root@linuxidc ~]# nmcli con sh 

NAME         UUID                                  TYPE            DEVICE      

eno16777736  100e462e-c0d0-4271-9b5a-1c8e47ff0d03  802-3-ethernet  eno16777736

team0-port2  1583854c-1f85-4c76-8cc7-c643071d4b82  802-3-ethernet  --          

team0-port1  bfd408b4-76d9-4f5c-ad5b-4d92430eb6ba  802-3-ethernet  --          

team0        913f05c2-15d8-49a9-a35f-8bc5ee843c0c  team            --  

服務(wù)器維護(hù)小知識(shí)到這里都沒(méi)毛病。


[root@linuxidc ~]# nmcli con up team0

Error: Connection activation failed: NetworkManager plugin for 'team' unavailable

什么鬼？NetworkManager "team"插件不可用。于是開(kāi)始排查。

是否存在team模塊

[root@linuxidc ~]# lsmod | egrep *team*

木有。那直接restart network好了。

[root@linuxidc ~]# systemctl restart network

Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.

 
[root@linuxidc ~]# systemctl status network

...

Mar 25 04:47:56 linuxidc network[2742]: Bringing up interface team0:  Error: Connection activation failed: NetworkManager plugin for 'team' unavailable

Mar 25 04:47:56 linuxidc network[2742]: [FAILED]

...

服務(wù)器維護(hù)小知識(shí)一樣的報(bào)錯(cuò)，難道什么包沒(méi)有安裝到？

[root@linuxidc ~]# yum list all | grep NetworkManager*

NetworkManager.x86_64                   1:1.0.6-27.el7                 @anaconda

NetworkManager-libnm.x86_64             1:1.0.6-27.el7                 @anaconda

NetworkManager-tui.x86_64               1:1.0.6-27.el7                 @anaconda

NetworkManager-wifi.x86_64              1:1.0.6-27.el7                 @anaconda

NetworkManager-adsl.x86_64              1:1.0.6-27.el7                 yum      

NetworkManager-bluetooth.x86_64         1:1.0.6-27.el7                 yum      

NetworkManager-glib.x86_64              1:1.0.6-27.el7                 yum      

NetworkManager-libreswan.x86_64         1.0.6-3.el7                    yum      

NetworkManager-libreswan-gnome.x86_64   1.0.6-3.el7                    yum      

NetworkManager-team.x86_64              1:1.0.6-27.el7                 yum      

NetworkManager-wwan.x86_64              1:1.0.6-27.el7                 yum 

哎喲，還真有個(gè)NetworkManager-team沒(méi)有安裝叻。

[root@linuxidc ~]# yum install NetworkManager-team -y

然后再次嘗試：

[root@linuxidc ~]# nmcli con sh 

NAME         UUID                                  TYPE            DEVICE      

eno16777736  100e462e-c0d0-4271-9b5a-1c8e47ff0d03  802-3-ethernet  eno16777736

team0-port2  1583854c-1f85-4c76-8cc7-c643071d4b82  802-3-ethernet  --          

team0-port1  bfd408b4-76d9-4f5c-ad5b-4d92430eb6ba  802-3-ethernet  --          

team0        913f05c2-15d8-49a9-a35f-8bc5ee843c0c  team            -- 

 [root@linuxidc ~]# nmcli con up team0

Error: Connection activation failed: NetworkManager plugin for 'team' unavailable

服務(wù)器維護(hù)小知識(shí)還是同樣的錯(cuò)，這就尷尬了。那就重啟下NetworkManager 在看看。

[root@linuxidc ~]# systemctl restart NetworkManager

 
[root@linuxidc ~]# nmcli con sh 

NAME         UUID                                  TYPE            DEVICE      

team0-port2  1583854c-1f85-4c76-8cc7-c643071d4b82  802-3-ethernet  eno50332208

eno16777736  100e462e-c0d0-4271-9b5a-1c8e47ff0d03  802-3-ethernet  eno16777736

team0-port1  bfd408b4-76d9-4f5c-ad5b-4d92430eb6ba  802-3-ethernet  eno33554984

team0        913f05c2-15d8-49a9-a35f-8bc5ee843c0c  team            team0

好了？ 緊查看是不是roundrobin模式

[root@linuxidc ~]# teamdctl team0 st

setup:

  runner: roundrobin

ports:

  eno33554984

    link watches:

      link summary: up

      instance[link_watch_0]:

        name: ethtool

        link: up

        down count: 0

  eno50332208

    link watches:

      link summary: up

      instance[link_watch_0]:

        name: ethtool

        link: up

        down count: 0

[root@linuxidc ~]# teamnl team0 ports

 4: eno50332208: up 1000Mbit FD

 3: eno33554984: up 1000Mbit FD

一切OK，老鐵，扎心了。

服務(wù)器維護(hù)小知識(shí)接下來(lái)測(cè)試下roundrobin

   這里說(shuō)明下：roundrobin這種bind模式：

       先來(lái)講下網(wǎng)卡bind的原理：

           通過(guò)將兩張或者多張網(wǎng)卡通過(guò)軟件虛擬出來(lái)一張邏輯網(wǎng)卡來(lái)傳輸數(shù)據(jù)，這里bind的模式有很多種。比如我們上面的這種，就是其中的鏈路聚合模式。當(dāng)使用該模式的時(shí)候，兩張物理網(wǎng)卡和邏輯網(wǎng)卡的mac地址都被設(shè)置為一致，大家都知道，我們做鏈路聚合就是為了讓多張物理網(wǎng)卡聚合在一塊
擴(kuò)展數(shù)據(jù)帶寬的方式，既然我們?cè)谶壿嬌鲜且粡埦W(wǎng)卡，那mac地址也就必須一致對(duì)吧。不然我們接到交換機(jī)或者路由器上，邏輯網(wǎng)卡一會(huì)是物理網(wǎng)卡服務(wù)器維護(hù)小知識(shí)1的mac地址，一會(huì)又是物理網(wǎng)卡2的地址，交換機(jī)一會(huì)找的到人，一會(huì)又找不到人。那數(shù)據(jù)還怎么傳輸。


           在鏈路聚合中，因?yàn)槭莾蓮埼锢砭W(wǎng)卡捆綁的模式，如果其中一張網(wǎng)卡down掉了，整個(gè)鏈路也就癱了。

　　　　如下：



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