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标题: CentOS6_网络基础（网卡bonding的配置） [打印本页]
作者: admin    时间: 2019-12-27 19:49     标题: CentOS6_网络基础（网卡bonding的配置）

先查看主机有哪些物理网卡可用： [root@localhost ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0C:29:2B:17:3A inet addr:192.168.168.130 Bcast:192.168.168.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe2b:173a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:46 errors:0 dropped:0 overruns:0 frame:0 TX packets:46 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5669 (5.5 KiB) TX bytes:6647 (6.4 KiB) eth1 Link encap:Ethernet HWaddr 00:0C:29:2B:17:44 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) 生产环境中，主机如果有两张网卡，网卡bonding的配置，一般建议采用主备模式（mode=1） [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE=bond0 TYPE=Bond ONBOOT=yes BOOTPROTO=static IPADDR=192.168.168.130 NETMASK=255.255.255.0 GATEWAY=192.168.168.2 DNS1=8.8.8.8 DNS2=114.114.114.114 USERCTL=no BONDING_OPTS="mode=1 miimon=100 fail_over_mac=1" [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ONBOOT=yes SLAVE=yes USERCTL=no BOOTPROTO=static MASTER=bond0 [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 ONBOOT=yes SLAVE=yes USERCTL=no BOOTPROTO=static MASTER=bond0 重启网络服务： service network restart 网卡bonding的配置成功： [root@localhost ~]# ifconfig bond0 Link encap:Ethernet HWaddr 00:0C:29:2B:17:3A inet addr:192.168.168.130 Bcast:192.168.168.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe2b:173a/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:25 errors:0 dropped:0 overruns:0 frame:0 TX packets:24 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1804 (1.7 KiB) TX bytes:2680 (2.6 KiB) eth0 Link encap:Ethernet HWaddr 00:0C:29:2B:17:3A UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:163 errors:0 dropped:0 overruns:0 frame:0 TX packets:133 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:16186 (15.8 KiB) TX bytes:19103 (18.6 KiB) eth1 Link encap:Ethernet HWaddr 00:0C:29:2B:17:44 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:480 (480.0 b) TX bytes:0 (0.0 b) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) 笺注：服务器重启后，依旧生效的。 查看bond0接口的状态: [root@localhost ~]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active) Primary Slave: None Currently Active Slave: eth0 #可以看到网卡eth0处于活跃状态 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:29:2b:17:3a Slave queue ID: 0 Slave Interface: eth1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:2b:17:44 Slave queue ID: 0 查看网卡eth0的配置： [root@localhost ~]# ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: off (auto) Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: yes #网卡开启时的值 ### 查看网卡eth1的配置： [root@localhost ~]# ethtool eth1 Settings for eth1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: off (auto) Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: yes ###### 测试两张网卡的自动切换 正常的话，当网卡eth0 down了之后，当前活跃的网卡会自动变为eth1 [root@localhost ~]# ifdown eth0 [root@localhost ~]# [root@localhost ~]# ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: Unknown (auto) Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: no #网卡没开启时的值 查看bond0接口的状态: [root@localhost ~]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active) Primary Slave: None Currently Active Slave: eth1 #可以看到网卡eth1处于活跃状态 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:2b:17:44 Slave queue ID: 0 备注： 只要还有一张网卡正常，主机的网络通讯都是正常的。 开启网卡eht0 [root@localhost ~]# ifup eth0 [root@localhost ~]# [root@localhost ~]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active) Primary Slave: None Currently Active Slave: eth1 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:2b:17:44 Slave queue ID: 0 Slave Interface: eth0 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:2b:17:3a Slave queue ID: 0 相关文章： CentOS6_网络基础 CentOS6.9编译安装Zabbix4.4.5



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