网站设计网站类型,长沙网站优化体验,wordpress工具包,网站建设作用概述#xff1a;通过网卡绑定#xff0c;处理网卡单点故障#xff0c;实验的操作系统是Redhat Linux Enterprise 5.3.绑定的前提条件#xff1a;芯片组型号相同#xff0c;而且网卡应该具备自己独立的BIOS芯片。网卡绑定时有四种模式#xff0c;其中常用的是模式0和模式1… 概述 通过网卡绑定处理网卡单点故障实验的操作系统是Redhat Linux Enterprise 5.3. 绑定的前提条件芯片组型号相同而且网卡应该具备自己独立的BIOS芯片。 网卡绑定时有四种模式其中常用的是模式0和模式1 模式0轮循模式负载均衡工作模式,他能提供两倍的带宽 这种情况下出现一块网卡失效,仅仅会是服务器出口带宽下降,也不会影响网络使用. 模式1主备模式当一个网络接口失效时(例如主交换机掉电等),不会出现网络中断,系统会按照cat /etc/rc.local里指定网卡的顺序工作,机器仍能对外服务,起到了失效保护的功能 案例: 模式1 1. modprobe bonding //调用模块bonding modinfo bonding //查看内核中加载的模块相关参数 内容: filename: /lib/modules/2.6.25.19/kernel/drivers/net/bonding/bonding.ko 2.编辑虚拟网络接口配置文件,指定网卡IP 注意不要指定单个网卡的IP 地址、子网掩码或网卡 ID。将上述信息指定到虚拟适配器(bonding)中即可。 cd /etc/sysconfig/network-scripts/ vim ifcfg-eth0 //模块别名 内容 DEVICEeth0 //设备 BOOTPROTOdhcp //自动获取地址 ONBOOTyes //启动激活 vim ifcfg-eth1 内容 DEVICEeth1 BOOTPROTOdhcp ONBOOTyes cp ifcfg-eth0 ifcfg-bond0 vim ifcfg-bond0 //编辑额外的网卡 内容 DEVICEbond0 BOOTPROTOnone IPADDR192.168.2.101 NETMASK255.255.255.0 ONBOOTyes 3.vim /etc/modprobe.conf //编辑模块配置文件以使系统在启动时加载bonding模块对外虚拟网络接口设备为 bond0 内容加入二行 alias bond0 bonding //内核模块 options bond0 miimon100 //链路监测 mode1 //工作模式 4.vim /etc/rc.local 内容加入一行 ifenslave bond0 eth0 eth1 配置完毕重新启动电脑 1.Xshell:\ ping 192.168.2.101 Pinging 192.168.2.101 with 32 bytes of data: Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Ping statistics for 192.168.2.101: Packets: Sent 4, Received 4, Lost 0 (0% loss), Approximate round trip times in milli-seconds: Minimum 0ms, Maximum 0ms, Average 0ms 2.ifconfig //查看网卡信息 bond0 Link encap:Ethernet HWaddr 00:0C:29:9E:49:28 inet addr:192.168.2.101 Bcast:192.168.2.255 Mask:25 5.255.255.0 inet6 addr: fe80::20c:29ff:fe9e:4928/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:87 errors:0 dropped:0 overruns:0 frame:0 TX packets:122 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:13696 (13.3 KiB) TX bytes:24910 (24.3 KiB) eth0 Link encap:Ethernet HWaddr 00:0C:29:9E:49:28 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:73 errors:0 dropped:0 overruns:0 frame:0 TX packets:98 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:10395 (10.1 KiB) TX bytes:19299 (18.8 KiB) Interrupt:19 Base address:0x2000 eth1 Link encap:Ethernet HWaddr 00:0C:29:9E:49:28 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:14 errors:0 dropped:0 overruns:0 frame:0 TX packets:24 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3301 (3.2 KiB) TX bytes:5611 (5.4 KiB) 3.cat /proc/net/bonding/bond0 //查看内核信息 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 Link Failure Count: 0 Permanent HW addr: 00:0c:29:9e:49:28 Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:0c:29:9e:49:32 断开网卡eth0后 1.Xshell:\ ping 192.168.2.101 -t Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Request timed out. Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 2.cat /proc/net/bonding/bond0 Bonding Mode: fault-tolerance (active-backup) 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: eth0 MII Status: down Link Failure Count: 1 Permanent HW addr: 00:0c:29:9e:49:28 Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:0c:29:9e:49:32 断开网卡eth1后 Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Request timed out. Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 模式0 注意只需修改模块配置文件就可以其它配置与模式1一样 1.vim /etc/modprobe.conf //编辑模块配置文件 文件内容修改一行 options bond0 miimon100 mode0 配置完毕重新启动电脑 断开网卡eth0后 Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Request timed out. Request timed out. Request timed out. 断开网卡eth1后 Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Request timed out. Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 Reply from 192.168.2.101: bytes32 time1ms TTL64 转载于:https://blog.51cto.com/yz406/962510
