NIC Bonding on CentOS 7 with nmcli

標籤：bonding centos7 nmcli

NIC Bonding on CentOS 7 with nmcli

當系統管理員希望增加可用頻寬，並提供冗餘和Server Load Balancer的資料轉送，核心支援bonding允許以彙總的方式實現。簡單地說，綁定意味著將兩個或多個物理網路介面（稱為奴隸）彙總成一個單獨的邏輯節點（稱為主網路）。如果一個特定的NIC（網路介面卡）的經驗問題，通訊不受影響只要其他保持活躍。

1.先決條件

預設情況下，bonding核心模組沒有啟用。因此，我們將需要載入它並確保它持久。使用modprobe--first-time載入bonding模組，如果載入模組失敗，會發出警告。

# modprobe --first-time bonding

以上的命令僅載入bondiing模組為當前會話，伺服器重啟後模組不會自動載入。為了確保持續載入，建立/etc/modules-load.d/bonding.conf檔案放置於檔案夾/etc/modules-load.d目錄中，確保每次伺服器重啟時載入bonding模組。

# echo "# Load thebonding kernel module at boot" > /etc/modules-load.d/bonding.conf

# echo "bonding">> /etc/modules-load.d/bonding.conf

伺服器重啟之後確保bonding模組自動載入

# lsmod|grep bonding

bonding              136705  0

#

2、nucli建立bond

查看現有串連及可用的網路裝置

# nmcli connection show

NAME  UUID  TYPE  DEVICE 

# nmcli device status

DEVICE       TYPE      STATE         CONNECTION 

eno16777736  ethernet  disconnected  --         

eno33554992  ethernet  disconnected  --         

bond0        bond      unmanaged     --         

lo           loopback  unmanaged     --         

#   

建立bond   

# nmcli con add type bond con-name bond0 ifname bond0 ip4 192.168.31.108/24 mode balance-rr

Connection ‘bond0‘ (599582b0-346b-48d3-8f1d-f3bcee5deca7) successfully added.

# nmcli connection add type bond-slave con-name slave1 ifname eno16777736 master bond0

Connection ‘slave1‘ (6a1dd331-bb90-4e92-9af6-654ed8b2d2ca) successfully added.

# nmcli connection add type bond-slave con-name slave2 ifname eno33554992 master bond0

Connection ‘slave2‘ (e31f40c9-4a1c-45d5-9832-8a1705f0b1f7) successfully added.

#nmcli con mod bond0 ipv4.method manual

#nmcli con mod bond0 ipv4.gateway 192.168.31.1

#nmcli connection modify bond0 ipv4.dns 192.168.31.1

#nmcli connection modify bond0 bond.options mode=balance-rr,miimon=100,downdelay=0,updelay=0

建立後重啟網路服務

#systemctl restart network

# nmcli device status

DEVICE       TYPE      STATE      CONNECTION 

bond0        bond      connected  bond0      

eno16777736  ethernet  connected  slave1     

eno33554992  ethernet  connected  slave2     

lo           loopback  unmanaged  --     

再次查看網路連結與網路裝置    

# nmcli connection show

NAME    UUID                                  TYPE            DEVICE      

bond0   599582b0-346b-48d3-8f1d-f3bcee5deca7  bond            bond0       

slave1  6a1dd331-bb90-4e92-9af6-654ed8b2d2ca  802-3-ethernet  eno16777736 

slave2  e31f40c9-4a1c-45d5-9832-8a1705f0b1f7  802-3-ethernet  eno33554992 

# ip addr list

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: eno16777736: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000

    link/ether 00:0c:29:51:e8:75 brd ff:ff:ff:ff:ff:ff

3: eno33554992: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000

    link/ether 00:0c:29:51:e8:75 brd ff:ff:ff:ff:ff:ff

4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 

    link/ether 00:0c:29:51:e8:75 brd ff:ff:ff:ff:ff:ff

    inet 192.168.31.108/24 brd 192.168.31.255 scope global bond0

       valid_lft forever preferred_lft forever

    inet6 fe80::233b:2da9:bddd:c8dc/64 scope link tentative dadfailed 

       valid_lft forever preferred_lft forever

    inet6 fe80::875c:5f79:646d:8446/64 scope link tentative dadfailed 

       valid_lft forever preferred_lft forever

    inet6 fe80::bf1c:1978:9c5:6ed7/64 scope link tentative dadfailed 

       valid_lft forever preferred_lft forever

#

本文出自 “技術成就夢想！” 部落格，請務必保留此出處http://dreamsanqin.blog.51cto.com/845412/1886212

NIC Bonding on CentOS 7 with nmcli