HAProxy+Keepalived實現雙主高可用負載均衡

阿新 • • 發佈：2020-10-14

一、規劃

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OS:CentOS764bitHAProxy+Keepalived-1:192.168.10.128HAProxy+Keepalived-2:192.168.10.129VIP1:192.168.10.111VIP2:192.168.10.222WEB1:192.168.10.130:80WEB2:192.168.10.131:80

二、配置Keepalived(注:安裝及配置詳見http://wangzhijian.blog.51cto.com/6427016/1701577)

①配置keepalived主配置檔案(配置檔案大部相同)

配置192.168.10.128做192.168.10.111的MASTER,192.168.10.222的BACKUP;

配置192.168.10.128做192.168.10.111的BACKUP,192.168.10.222的MASTER.

a.192.168.10.128配置如下:

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#vi/etc/keepalived/keepalived.conf!ConfigurationFileforkeepalivedglobal_defs{notification_email{[email protected][email protected]

##設定郵件報警地址}notification_email_from[email protected]smtp_server127.0.0.1smtp_connect_timeout3router_idLVS_DEVEL}vrrp_scriptcheck_haproxy{##新增haproxy服務監控指令碼script"/etc/keepalived/check_haproxy.sh"interval2weight2}vrrp_instanceVI_1{##配置vrrp例項1stateMASTERinterfaceeno16777736virtual_router_id51##例項1虛擬路由標識priority101advert_int1authentication{auth_typePASSauth_pass1111}track_script{##檢測執行指令碼check_haproxy}virtual_ipaddress{192.168.10.111}}vrrp_instanceVI_2{##配置vrrp例項2stateBACKUPinterfaceeno16777736virtual_router_id52##例項2虛擬路由標識priority100advert_int1garp_master_delay5authentication{auth_typePASSauth_pass1111}virtual_ipaddress{192.168.10.222}

b.192.168.10.129配置如下:

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#vi/etc/keepalived/keepalived.conf!ConfigurationFileforkeepalivedglobal_defs{notification_email{[email protected][email protected]##設定郵件報警地址}notification_email_from[email protected]smtp_server127.0.0.1smtp_connect_timeout3router_idLVS_DEVEL}vrrp_scriptcheck_haproxy{##新增haproxy服務監控指令碼script"/etc/keepalived/check_haproxy.sh"interval2weight2}vrrp_instanceVI_1{##配置vrrp例項1stateBACKUPinterfaceeno16777736virtual_router_id51##例項1虛擬路由標識priority100advert_int1garp_master_delay5authentication{auth_typePASSauth_pass1111}track_script{##檢測執行指令碼check_haproxy}virtual_ipaddress{192.168.10.111}}vrrp_instanceVI_2{##配置vrrp例項2stateMASTERinterfaceeno16777736virtual_router_id52##例項2虛擬路由標識priority101advert_int1garp_master_delay5authentication{auth_typePASSauth_pass1111}virtual_ipaddress{192.168.10.222}

②配置HAProxy檢測指令碼

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#vi/etc/keepalived/check_haproxy.sh#!/bin/bashif[$(ps-Chaproxy--no-header|wc-l)-eq0]thensystemctlstarthaproxyfisleep2if[$(ps-Chaproxy--no-header|wc-l)-eq0]thensystemctlstopkeepalivedfi#chmodu+x/etc/keepalived/check_haproxy.sh

③開啟keepalived並檢視

1	#systemctlstartkeepalived

192.168.10.128:

192.168.10.129:

三、配置HAProxy(注:安裝及配置詳見http://wangzhijian.blog.51cto.com/6427016/1702795)

①配置HAProxy主配置檔案(配置檔案相同)

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#vi/etc/haproxy/haproxy.cfg#thisconfigneedshaproxy-1.1.28orhaproxy-1.2.1global##全域性配置log127.0.0.1local0log127.0.0.1local1notice#logloghostlocal0infomaxconn4096chroot/usr/share/haproxyuid99gid99daemon#debug#quietdefaults##預設配置logglobalmodehttpoptionhttplogoptiondontlognullretries3optionredispatchmaxconn4000timeoutconnect5000timeoutclient50000timeoutserver50000frontendweb##前端代理bind0.0.0.0:80aclwww.zhi.comhdr(host)-iuse_backendwww.zhi.comifwww.zhi.comaclwww.fly.comhdr(host)-iwww.fly.comuse_backendwww.fly.comifbackend##後端www.zhi.com作用域modehttpbalancesource##儲存session值optionhttpchk/index.htmlserver192.168.10.130192.168.10.130:80checkinter2000rise2fall1backend##後端www.fly.com作用域modehttpbalancesource##儲存session值optionhttpchk/index.htmlserver192.168.10.131192.168.10.131:80checkinter2000rise2fall1listenstatus##監控頁面設定modehttpbind0.0.0.0:80statsenablestatshide-versionstatsuri/haproxyadminstatsauthadmin:adminstatsadminifTRUE

②開啟HAProxy並檢視