Linux服务器调优（多网卡绑定技术）
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《Linux服务器调优（多网卡绑定技术）》要点： 一、网络状态查看： ss netstat iftop iptraf ethtool ss代替netstat ss -t -a Display all TCP sockets. ss -t -n--查看所已经连接上的TCP ss -t -l -n--查看所有正在监听的TCP ss -u -a Display all UDP sockets. ss -o state established ’( dport = :ssh or sport = :ssh )’ Display all established ssh connections. ss -x src /tmp/.X11-unix/* Find all local processes connected to X server. ip代替ifconfig/route ip link set DEVICE { up | down }--开启或者关闭网卡 ip link show [ DEVICE ]--查看网卡连接状态 ip addr { add | del } IFADDR dev STRING--添加IP地址 ip addr show {eth0 | eth1}--查看某个网卡的IP地址 ip route list--查看路由表 ip route add to 192.168.10.0/24 via 192.168.100.1 ip route add to 192.168.20.0/24 dev eth0--添加一条默认路由 ip route add to 0/0 via 192.168.100.1--添加默认路由 ip route del to 0/0 dev eth0--删除默认路由 # ethtool eth0－－查看当前网卡的硬件信息 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on Supports Wake-on: g Wake-on: d Link detected: yes 二、更改速率及网卡的协商模式： # ethtool -s eth0 speed 100 duplex full autoneg off
bond多网卡 网卡绑定技术有助于保证高可用性特性并提供其它优势以提高网络性能,在这介绍的Linux双网卡绑定实现就是使用两块网卡虚拟成为一块网卡,这个聚合起来的设备看起来是一个单独的以太网接口设备,通俗点讲就是两块网卡具有相同的IP地址而并行链接聚合成一个逻辑链路工作,这样即使其中的一块物理网卡出现故障,也不会导致连接中断. 网卡绑定就是多张网卡逻辑上作为一张网卡用.可分为,负载均衡绑定和冗余绑定两种. 1、负载均衡： # vim /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE=bond0 IPADDR=192.168.0.100 NETMASK=255.255.255.0 BROADCAST=192.168.0.255 NETWORK=192.168.0.0 GATEWAY=192.168.0.254 ONBOOT=yes BOOTPROTO=static TYPE=BOND BONDING_OPTS="mode=0 miimon=50" 2.编辑各网卡的配置文件 # vim /etc/sysconfig/network-scripts/ifcfg-eth0 BOOTPROTO=none TYPE=Ethernet DEVICE=eth0 ONBOOT=yes MASTER=bond0 SLAVE=yes USERCTL=no # vim /etc/sysconfig/network-scripts/ifcfg-eth1 BOOTPROTO=none TYPE=Ethernet DEVICE=eth1 ONBOOT=yes MASTER=bond0 SLAVE=yes USERCTL=no 3、加载内核模块 # vim /etc/modprobe.conf alias bond0 bonding options bond0 miimon=50 mode=0--mode=[0(banance-rr) | 1(active-backup)] # modprobe bonding 4、重启服务： # /etc/init.d/network restart 5、查看 # cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v2.6.1 (October 29,2006) Bonding Mode: load balancing (round-robin) 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: 1 Permanent HW addr: 00:1b:b9:58:8b:b2 Slave Interface: eth1 MII Status: down Link Failure Count: 0 Permanent HW addr: 00:07:40:6c:ac:c8 编程之家PHP培训学院每天发布《Linux服务器调优（多网卡绑定技术）》等实战技能，PHP、MYSQL、LINUX、APP、JS,CSS全面培养人才。 （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
