高可用web服務(wù)構(gòu)建2

高可用Web服務(wù)介紹2安裝和配置HAProxyandKeepalived這所有的節(jié)點（ubuntu系統(tǒng)）上安裝HAProxyandKeepalivedapt-getinstallhaproxyapt-getinstallkeepalived3net.ipv4設(shè)定HAProxy中的負(fù)載均衡還需要能夠綁定到非本地IP地址，這意味著它不會分配給本地系統(tǒng)上的設(shè)備。添加下面的配置，以便可以將浮動/共享IP分配給其中一個負(fù)載平衡器。net.ipv4.ip_nonlocal_bind=1現(xiàn)在你知道上面的事情了，讓我們編輯一下sysctl.conf。vim/etc/sysctl.conf增加如下一行net.ipv4.ip_nonlocal_bind=1如果想讓修改生效，必須返回命令行輸入一下使其生效sysctl-p4keepalived.conf現(xiàn)在讓我們在每個節(jié)點上創(chuàng)建keepalived.conf文件。以下所有的Keepalived配置都在Keepalived提供的用戶指南中進(jìn)行了介紹，并參考本指南。主節(jié)點配置servicekeepalivedstartglobal_defs{lvs_idhaproxy_DH#Keepalivedprocessidentifiervrrp_scriptcheck_haproxy{script"killall-0haproxy"#ScriptusedtocheckifHAProxyisrunninginterval2weight2}#Virtualinterfacvrrp_instanceVI_01{stateMASTERinterfaceeth0virtual_router_id51priority101#Thevirtualipaddresssharedbetweenthetwoloadbalancersvirtual_ipaddress{64}track_script{check_haproxy}}從節(jié)點配置servicekeepalivedstartglobal_defs{lvs_idhaproxy_DH_passive#Keepalivedprocessidentifier}#ScriptusedtocheckifHAProxyisrunningvrrp_scriptcheck_haproxy{script"killall-0haproxy"interval2weight2}#Virtualinterface，Thepriorityspecifiestheorderinwhichtheassignedinterfacetotakeoverinafailovervrrp_instanceVI_01{stateSLAVEinterfaceeth0virtual_router_id51priority100virtual_ipaddress{64#Thevirtualipaddresssharedbetweenthetwoloadbalancers}track_script{check_haproxy}}5haproxy.confgloballoglocal0loglocal1notice#logloghostlocal0infomaxconn4096#chroot/usr/share/haproxyuserhaproxygrouphaproxydaemondefaultslogglobalmodehttpoptionhttplogoptiondontlognullretries3optionredispatchmaxconn2000contimeout5000clitimeout50000srvtimeout50000listenstats192.168.6.ABC:8989modehttpstatsenablestatsuri/statsstatsrealmHAProxy\Statisticsstatsauthadmin:adminlistenam_cluster:80modehttpbalanceroundrobinoptionhttpcloseoptionforwardforcookieSERVERNAMEinsertindirectnocacheserveram-