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今天小編給大家分享一下Centos中雙網(wǎng)卡綁定及相關(guān)問題怎么解決的相關(guān)知識點(diǎn),內(nèi)容詳細(xì),邏輯清晰,相信大部分人都還太了解這方面的知識,所以分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后有所收獲,下面我們一起來了解一下吧。
說明下,以下環(huán)境是在虛擬機(jī)中實現(xiàn)的:
系統(tǒng): centos7.2 x64 最小化安裝。
為了方便演示,這里共有三張網(wǎng)卡:
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@bogon ~]# 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@bogon ~]# 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@bogon ~]# nmcli con add type team ifname team0 con-name team0 config '{"runner":{"name":"roundrobin"}}' connection 'team0' (913f05c2-15d8-49a9-a35f-8bc5ee843c0c) successfully added. [root@bogon ~]# 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@bogon ~]# nmcli con mod team0 ipv4.address "192.168.121.100/24" [root@bogon ~]# nmcli con mod team0 ipv4.method manual [root@bogon ~]# 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 --
到這里都沒毛病。
[root@bogon ~]# nmcli con up team0 error: connection activation failed: networkmanager plugin for 'team' unavailable
什么鬼?networkmanager "team"插件不可用。于是開始排查。
是否存在team模塊
[root@bogon ~]# lsmod | egrep *team*
木有。那直接restart network好了。
[root@bogon ~]# 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@bogon ~]# systemctl status network ... mar 25 04:47:56 bogon network[2742]: bringing up interface team0: error: connection activation failed: networkmanager plugin for 'team' unavailable mar 25 04:47:56 bogon network[2742]: [failed] ...
一樣的報錯,難道什么包沒有安裝到?
[root@bogon ~]# 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networkmanager-team沒有安裝叻。
[root@bogon ~]# yum install networkmanager-team -y
然后再次嘗試:
[root@bogon ~]# 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@bogon ~]# nmcli con up team0 error: connection activation failed: networkmanager plugin for 'team' unavailable
尼瑪,還是同樣的錯,這就尷尬了。那就重啟下networkmanager 在看看。
[root@bogon ~]# systemctl restart networkmanager [root@bogon ~]# 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? what the fuck!趕緊查看是不是roundrobin模式
[root@bogon ~]# 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@bogon ~]# teamnl team0 ports 4: eno50332208: up 1000mbit fd 3: eno33554984: up 1000mbit fd
一切ok,老鐵,扎心了。
接下來測試下roundrobin
這里說明下:roundrobin這種bind模式:
先來講下網(wǎng)卡bind的原理:
通過將兩張或者多張網(wǎng)卡通過軟件虛擬出來一張邏輯網(wǎng)卡來傳輸數(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,既然我們在邏輯上是一張網(wǎng)卡,那mac地址也就必須一致對吧。不然我們接到交換機(jī)或者路由器上,邏輯網(wǎng)卡一會是物理網(wǎng)卡1的mac地址,一會又是物理網(wǎng)卡2的地址,交換機(jī)一會找的到人,一會又找不到人。那數(shù)據(jù)還怎么傳輸。
在鏈路聚合中,因為是兩張物理網(wǎng)卡捆綁的模式,如果其中一張網(wǎng)卡down掉了,整個鏈路也就癱了。
如下:
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