有时候公司调度机、数据库这些业务流量都比较大,为了提高网络吞吐量、链路冗余,所以我们都做端口绑定,linux下网卡绑定有多种模式,我这里用的是mode4
交换机上操作:
system-viewinterface Bridge-Aggregation 100link-aggregation mode dynamicquitinterface GigabitEthernet1/0/28port link-aggregation group 100quitinterface GigabitEthernet1/0/29port link-aggregation group 100quitinterface GigabitEthernet1/0/33port link-aggregation group 100quitinterface GigabitEthernet1/0/30port link-aggregation group 100quit
服务器上操作:
1、撰写bond0的配置文件
vi /etc/sysconfig/network-scripts/ifcfg-bond0DEVICE=bond0ONBOOT=yesBOOTPROTO=staticIPADDR=10.10.0.100NETMASK=255.255.0.0USERCTL=noTYPE=Ethernet
2、修改eth0、1、2、3的配置文件
/etc/sysconfig/network-scripts/ifcfg-eth0、1、2、3DEVICE=eth0(1、2、3对应修改)BOOTPROTO=noneONBOOT=yesUSERCTL=noMASTER=bond0SLAVE=yes
3、编辑模块载入配置文件,开机自动加载bonding模块到内核
vim /etc/modprobe.d/openfwwf.conf##########新增以下内容###########alias bond0 bondingoptions bond0 miimon=100 mode=4alias net-pf-10 off #关闭ipv6支持#################################
4、重启完全网卡
5、查看交换机绑定状态是否正常(Status都是S就ok了)
display link-aggregation verboseLoadsharing Type: Shar -- Loadsharing, NonS -- Non-LoadsharingPort Status: S -- Selected, U -- UnselectedFlags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,D -- Synchronization, E -- Collecting, F -- Distributing,G -- Defaulted, H -- ExpiredAggregation Interface: Bridge-Aggregation100Aggregation Mode: DynamicLoadsharing Type: SharSystem ID: 0x8000, c4ca-d9d6-d1f3Local:Port Status Priority Oper-Key Flag--------------------------------------------------------------------------------GE1/0/28 S 32768 1 {ACDEF}GE1/0/29 S 32768 1 {ACDEF}GE1/0/30 S 32768 1 {ACDEF}GE1/0/33 S 32768 1 {ACDEF}Remote:Actor Partner Priority Oper-Key SystemID Flag--------------------------------------------------------------------------------GE1/0/28 2 255 17 0xffff, 6cae-8b51-1c7a {ACDEF}GE1/0/29 4 255 17 0xffff, 6cae-8b51-1c7a {ACDEF}GE1/0/30 3 255 17 0xffff, 6cae-8b51-1c7a {ACDEF}GE1/0/33 1 255 17 0xffff, 6cae-8b51-1c7a {ACDEF}
做绑定之前首先需要知道服务器的网卡对应接交换机的那个网口,你可以登录到交换机上执行:
terminalmonitor(此功能默认是关闭的),然后在服务器上分别down网口,从交换机上就可以看到是那个端口down了。
缓存服务器Squid架构配置
随着网站访问人数越来越多,承受的并发和压力也越来越高,这时候我们需要对网站和架构进行优化,今天我们来讨论使用Squid对架构进行优化,缓存网站。
一:安装
安装之前我们需要对系统进行优化,主要优化系统内核相关参数
vi /etc/sysctl.conf#sysctl.conf config 2014-03-26net.ipv4.ip_forward = 0net.ipv4.conf.default.rp_filter = 1net.ipv4.conf.default.accept_source_route = 0kernel.sysrq = 0kernel.core_uses_pid = 1net.ipv4.tcp_syncookies = 1kernel.msgmnb = 65536kernel.msgmax = 65536kernel.shmmax = 68719476736kernel.shmall = 4294967296net.ipv4.tcp_max_tw_buckets = 10000net.ipv4.tcp_sack = 1net.ipv4.tcp_window_scaling = 1net.ipv4.tcp_rmem = 4096 87380 4194304net.ipv4.tcp_wmem = 4096 16384 4194304net.core.wmem_default = 8388608net.core.rmem_default = 8388608net.core.rmem_max = 16777216net.core.wmem_max = 16777216net.core.netdev_max_backlog = 262144net.core.somaxconn = 262144net.ipv4.tcp_max_orphans = 3276800net.ipv4.tcp_max_syn_backlog = 262144net.ipv4.tcp_timestamps = 0net.ipv4.tcp_synack_retries = 1net.ipv4.tcp_syn_retries = 1net.ipv4.tcp_tw_recycle = 1net.ipv4.tcp_tw_reuse = 1net.ipv4.tcp_mem = 94500000 915000000 927000000net.ipv4.tcp_fin_timeout = 1net.ipv4.tcp_keepalive_time = 15net.ipv4.ip_local_port_range = 1024 65535
优化Linux文件打开最大数:
vi /etc/security/limits.conf * soft nproc 65535* hard nproc 65535* soft nofile 65535* hard nofile 65535
自动化安装Squid脚本,里面分别配置了两个虚拟主机域名,前端有LVS,LVS均衡后端多组squid集群,根据命中率去调整squid集群的数量,Squid后端均衡Nginx或者Apache。(完整的架构LVS+Keepalived+Squid+Nginx+Resin/Tomcat/PHP+MySQL集群)
扩扑图如下:
#!/bin/sh#Auto make install squid serverSQUID_CNF=/etc/squid/squid.confCACHE_DIR=( /data/cache1 /data/cache2)#Install squid shellyum install -y squid#config squid.confcat >>$SQUID_CNF <
最后测试,前端LVS截图(注LVS此处不配置了)
通过浏览器查看head头,缓存命中情况截图如下:
通过命令
squidclient -p
80
mgr:info |egrep
"(Request Hit Ratios|Byte Hit Ratios)"
查看缓存命中率如下:
二、批量清空缓存
使用Shell脚本批量清空squid缓存脚本auto_clean_cache.sh
#!/bin/shDIR=/data/cache/Command=/usr/sbin/squidclientif [ "$1" = "" ];then echo "Usage:{$0 "\$1" ,Example exec $0 forum.php}" exitfigrep -r -a $1 ${DIR} | strings | grep "http:"|grep -v "=" >list.txtcount=`cat list.txt|wc -l`if [ "$count" -eq "0" ];then echo -e "---------------------------------\nThe $1 cache already update,Please exit ......" exitfiwhile read linedo $Command -m PURGE -p 80 "$line" >>/dev/null if [ $? -eq 0 ];then echo -e "----------------------------------\nThe $line cache update successfully!" fidone < list.txt
脚本执行:
[root@node2 ~]# sh auto_clean_cache.sh forum.php----------------------------------The http://www.wugk2.com/forum.php cache update successfully![root@node2 ~]#