【移動應(yīng)用開發(fā)技術(shù)】18.11 LVS DR模式搭建；18.12 keepalived lvs

【移動應(yīng)用開發(fā)技術(shù)】18.11LVSDR模式搭建；18.12keepalivedlvs

擴展：haproxy+keepalived

/xrt95050/article/details/40926255nginx、lvs、haproxy比較

/article/2014-07-24/2820837keepalived中自定義腳本

vrrp_script

/hncscwc/blog/158746lvs

dr模式只使用一個公網(wǎng)ip的實現(xiàn)方法

/628458/33872618.11LVSDR模式搭建1.改回hao2hao3機器ens33網(wǎng)卡中網(wǎng)關(guān)（.2）[root@hao-02~]#vi/etc/sysconfig/network-scripts/ifcfg-ens33[root@hao-03~]#vi/etc/sysconfig/network-scripts/ifcfg-ens332.重啟網(wǎng)卡：[root@hao-02~]#systemctlrestartnetwork[root@hao-03~]#systemctlrestartnetworkhao1機器(dir)上操作：1.hao1機器(dir)上，創(chuàng)建lvs_dr.sh腳本：[root@hao-01~]#vim/usr/local/sbin/lvs_dr.sh添加內(nèi)容：#!/bin/bashecho1>/proc/sys/net/ipv4/ip_forwardipv=/usr/sbin/ipvsadmvip=00rs1=29rs2=30#注意這里的網(wǎng)卡名字(ens33上面設(shè)置了vip虛擬網(wǎng)卡ip)ifdownens33ifupens33ifconfigens33:2$vipbroadcast$vipnetmask55uprouteadd-host$vipdevens33:2$ipv-C$ipv-A-t$vip:80-swrr$ipv-a-t$vip:80-r$rs1:80-g-w1$ipv-a-t$vip:80-r$rs2:80-g-w12.執(zhí)行l(wèi)vs_dr.sh腳本：[root@hao-01~]#sh/usr/local/sbin/lvs_dr.shhao2機器(rr)上操作：1.hao2機器(rr)上，創(chuàng)建lvs_rs.sh腳本：[root@hao-02~]#vim/usr/local/sbin/lvs_rs.sh添加內(nèi)容：#/bin/bashvip=00#把vip綁定在lo上，是為了實現(xiàn)rs直接把結(jié)果返回給客戶端ifdownloifuploifconfiglo:0$vipbroadcast$vipnetmask55uprouteadd-host$viplo:0#以下操作為更改arp內(nèi)核參數(shù)，目的是為了讓rs順利發(fā)送mac地址給客戶端#參考文檔/lgfeng/archive/2012/10/16/2726308.htmlecho"1">/proc/sys/net/ipv4/conf/lo/arp_ignoreecho"2">/proc/sys/net/ipv4/conf/lo/arp_announceecho"1">/proc/sys/net/ipv4/conf/all/arp_ignoreecho"2">/proc/sys/net/ipv4/conf/all/arp_announce2.執(zhí)行l(wèi)vs_rs.sh腳本：[root@hao-02~]#sh/usr/local/sbin/lvs_rs.shhao3機器(rr)上操作：1.hao3機器(rr)上，創(chuàng)建lvs_rs.sh腳本：[root@hao-03~]#vim/usr/local/sbin/lvs_rs.sh添加內(nèi)容：#/bin/bashvip=00#把vip綁定在lo上，是為了實現(xiàn)rs直接把結(jié)果返回給客戶端ifdownloifuploifconfiglo:0$vipbroadcast$vipnetmask55uprouteadd-host$viplo:0#以下操作為更改arp內(nèi)核參數(shù)，目的是為了讓rs順利發(fā)送mac地址給客戶端#參考文檔/lgfeng/archive/2012/10/16/2726308.htmlecho"1">/proc/sys/net/ipv4/conf/lo/arp_ignoreecho"2">/proc/sys/net/ipv4/conf/lo/arp_announceecho"1">/proc/sys/net/ipv4/conf/all/arp_ignoreecho"2">/proc/sys/net/ipv4/conf/all/arp_announce2.執(zhí)行l(wèi)vs_rs.sh腳本：[root@hao-03~]#sh/usr/local/sbin/lvs_rs.sh測試：游覽器訪問vip：0018.12

keepalivedlvshao1機器(dir)上操作：yuminstall-ykeepalived1.編輯keepalived.conf配置文件：[root@hao-01~]#vim/etc/keepalived/keepalived.conf添加內(nèi)容：vrrp_instanceVI_1{#備用服務(wù)器上為BACKUPstateMASTER#綁定vip的網(wǎng)卡為ens33，你的網(wǎng)卡和阿銘的可能不一樣，這里需要你改一下interfaceens33virtual_router_id51#備用服務(wù)器上為90priority100advert_int1authentication{auth_typePASSauth_passhaomima}virtual_ipaddress{00}}virtual_server0080{#(每隔10秒查詢realserver狀態(tài))delay_loop10#(lvs算法)lb_algowlc#(DR模式)lb_kindDR#(同一IP的連接0秒內(nèi)被分配到同一臺realserver)persistence_timeout0#(用TCP協(xié)議檢查realserver狀態(tài))protocolTCPreal_server2980{#(權(quán)重)weight100TCP_CHECK{#(10秒無響應(yīng)超時)connect_timeout10nb_get_retry3delay_before_retry3connect_port80}}real_server3080{weight100TCP_CHECK{connect_timeout10nb_get_retry3delay_before_retry3connect_port80}}}2.啟動keepalived：[root@hao-01~]#systemctlstartkeepalived3.hao1機器（dir）上，先關(guān)閉keepalived：[root@hao-01~]#systemctlstopkeepalived4.hao2機器（rr1）上，先關(guān)閉nginx，再啟動nginx：[root@hao-02~]#systemctlstopnginx[root@hao-02~]#systemctlstartnginx5.hao3機器（rr2）上，先關(guān)閉nginx，再啟動nginx：先關(guān)閉nginx，再啟動nginx：[root@hao-03~]#systemctlstopnginx[root@hao-03~]#system