nmcli 上篇已经介绍了创建网卡配置，网卡切换等
在CentOS7里面如何实现多网卡绑定
也可以修改文件，这里是用命令
我们先定义一个IP：我定义的是172.17.250.89
ping下IP,他是不通的
[root@localhost ~]# ping 172.17.250.89
PING 172.17.250.89 (172.17.250.89) 56(84) bytes of data.
From 172.17.254.78 icmp_seq=2 Destination Host Unreachable
From 172.17.254.78 icmp_seq=3 Destination Host Unreachable
From 172.17.254.78 icmp_seq=4 Destination Host Unreachable
From 172.17.254.78 icmp_seq=6 Destination Host Unreachable
From 172.17.254.78 icmp_seq=7 Destination Host Unreachable
From 172.17.254.78 icmp_seq=8 Destination Host Unreachable
nmcli绑定
首先我们先用命令来生成配置文件 ,用命令nmcli connection add type bond con-name bond0 ifname bond0 mode active-backup
[root@localhost ~]# nmcli connection add type bond con-name bond0 ifname bond0 mode active-backup
Connection 'bond0' (282d8832-e1ea-43de-b769-fae4b26d7244) successfully added.
来查看下配置生成了没有，使用命令nmcli connection show，下面的bond0就是我们生成的文件
[root@localhost ~]# nmcli connection show
NAME UUID TYPE DEVICE
Wired connection 1 d2444c8a-2a16-3338-9558-5920b573bc91 802-3-ethernet eth0
Wired connection 2 679bea27-b8ed-3e8e-94a5-62329f148f3e 802-3-ethernet eth1
Wired connection 3 d094d2c1-6fac-3b62-81c8-4bbae33bbc12 802-3-ethernet eth2
bond0 282d8832-e1ea-43de-b769-fae4b26d7244 bond
ens33 d5b2a714-b9f6-44dc-9724-45d60edbde62 802-3-ethernet --
ens34 a688a753-ba50-416b-bd37-02d240901857 802-3-ethernet --
[root@localhost network-scripts]# cat ifcfg-bond0
DEVICE=bond0
BONDING_OPTS=mode=active-backup
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=bond0
UUID=282d8832-e1ea-43de-b769-fae4b26d7244
ONBOOT=yes
接下来我们给他配地址m,使用命令 nmcli connection modify bond0 ipv4.method manual ipv4.addresses 172.17.250.89/24
[root@localhost network-scripts]# nmcli connection modify bond0 ipv4.method manual ipv4.addresses 172.17.250.89/24
[root@localhost network-scripts]# cat ifcfg-bond0
DEVICE=bond0
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=bond0
UUID=282d8832-e1ea-43de-b769-fae4b26d7244
ONBOOT=yes
BONDING_OPTS=mode=active-backup
IPADDR=172.17.250.89
PREFIX=24
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
查看下地址，没有获取到IP不能ping通，只是配置文件里面有IP
[root@localhost network-scripts]# ifconfig
bond0: flags=5123 mtu 1500
ether be:bf:fb:4a:60:e2 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
接下来我们使用nmcli connection up bond0命令让配置文件生效
[root@localhost network-scripts]# nmcli connection up bond0
查看下配置文件，bond0已经生效里面已经有了IP，我们看看他是否通了
[root@localhost ~]# ifconfig
bond0: flags=5123 mtu 1500
inet 172.17.250.89 netmask 255.255.255.0 broadcast 172.17.250.255
ether be:bf:fb:4a:60:e2 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
查看下，另外一台电脑是否ping通
已经ping通
[root@localhost ~]# ping 172.17.250.89
PING 172.17.250.89 (172.17.250.89) 56(84) bytes of data.
64 bytes from 172.17.250.89: icmp_seq=1 ttl=64 time=0.758 ms
64 bytes from 172.17.250.89: icmp_seq=2 ttl=64 time=0.753 ms
64 bytes from 172.17.250.89: icmp_seq=3 ttl=64 time=0.471 ms
64 bytes from 172.17.250.89: icmp_seq=4 ttl=64 time=1.06 ms
64 bytes from 172.17.250.89: icmp_seq=5 ttl=64 time=0.487 ms
64 bytes from 172.17.250.89: icmp_seq=6 ttl=64 time=0.429 ms
现在只是给他IP 还没有给他绑定物理网卡，他没有容错功能
接下来把eth0和eth1绑定到bond0里面
[root@localhost ~]# ifconfig
bond0: flags=5123 mtu 1500
inet 172.17.250.89 netmask 255.255.255.0 broadcast 172.17.250.255
ether be:bf:fb:4a:60:e2 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163 mtu 1500
inet 192.168.31.128 netmask 255.255.255.0 broadcast 192.168.31.255
inet6 fe80::a29b:8116:eaca:f436 prefixlen 64 scopeid 0x20 mtu 1500
inet 172.17.254.77 netmask 255.255.0.0 broadcast 172.17.255.255
inet6 fe80::edc6:9ab6:837e:b8f7 prefixlen 64 scopeid 0x20
我们用nmcli connection add type bond-slave ifname eth0 master命令来执行，添加eth0和eth1
[root@localhost ~]# nmcli connection add type bond-slave ifname eth0 master bomd0
Warning: master='bomd0' doesn't refer to any existing profile.
Connection 'bond-slave-eth0-1' (5d1bf5be-89da-4983-bff8-c06d12ace0bb) successfully added.
现在我们查看下/etc/sysconfig/network-scripts/路径下的文件
已经多了些配置文件
[root@localhost network-scripts]# ls
ifcfg-bond0 ifcfg-ens34 ifdown-ib ifdown-ppp ifdown-tunnel ifup-ib ifup-plusb ifup-Team network-functions
ifcfg-lo ifdown-ippp ifdown-routes ifup ifup-ippp ifup-post ifup-TeamPort network-functions-ipv6
ifcfg-bond-slave-eth0ifdown ifdown-ipv6 ifdown-sit ifup-aliases ifup-ipv6 ifup-ppp ifup-tunnel ifdown-bnep ifdown-isdn ifdown-Team ifup-bnep ifup-isdn ifup-routes ifup-wireless
ifcfg-ens33 ifdown-eth ifdown-post ifdown-TeamPort ifup-eth ifup-plip ifup-sit init.ipv6-global
[root@localhost network-scripts]# nmcli connection up bond-slave-eth0
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/12)
[root@localhost network-scripts]# nmcli connection up bond-slave-eth1
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/12)
我们在来查询绑定的情况
他们MAC地址完全相同
绑定成功
[root@localhost ~]# ifconfig
bond0: flags=5187 mtu 1500
inet 172.17.250.89 netmask 255.255.255.0 broadcast 172.17.250.255
inet6 fe80::28c9:f0c9:1483:a02d prefixlen 64 scopeid 0x20 mtu 1500
ether 00:0c:29:52:72:d2 txqueuelen 1000 (Ethernet)
RX packets 1627 bytes 156249 (152.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1050 bytes 139562 (136.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=6211 mtu 1500
ether 00:0c:29:52:72:d2 txqueuelen 1000 (Ethernet)
RX packets 600 bytes 61748 (60.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 134 bytes 18898 (18.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
接下来我们去 /proc/net/bonding/bond0路径下面查看下他们的绑定关系
None表示运行中，up表示待命状态
绑定配置成功
[root@localhost ~]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:52:72:d2
Slave queue ID: 0
Slave Interface: eth1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:52:72:e6
Slave queue ID: 0
[root@localhost ~]#
接下来删除bond0 用命令connection down bond0，先下线
[root@localhost ~]# nmcli connection down bond0
Connection 'bond0' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/11)
下线以后我们来看下配置
bond0 模块也自动下线了
[root@localhost ~]# ifconfig
eth0: flags=4163 mtu 1500
ether 00:0c:29:52:72:d2 txqueuelen 1000 (Ethernet)
RX packets 1636 bytes 157932 (154.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1066 bytes 140574 (137.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163 mtu 1500
ether 00:0c:29:52:72:dc txqueuelen 1000 (Ethernet)
RX packets 52659 bytes 4215036 (4.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5397 bytes 554782 (541.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
接下来我们删除链接 用nmcli connection delete命令删除，也可以直接删除文件，我就直接删除文件了
[root@localhost network-scripts]# rm -rf /etc/sysconfig/network-scripts/ifcfg-bond*
在用nmcli connection reload 读取一下就完成了[root@localhost network-scripts]# nmcli connection reload
