lvs+keepalived
首先安装依赖包yum -y install openssl-develgcc gcc-c++ipvsadmyum安装lvs
yum -y install ipvsadm
yum安装keepalived
yum -y installkeepalived
/etc/init.d/ipvsadmrestartservice keepalivedrestart主服务器配置文件修改keepalived配置文件（删除原内容，粘贴后修改IP）vim/etc/keepalived/keepalived.conf! Configuration File for keepalived
global_defs {notification_email { linuxedu@foxmail.com mageedu@126.com}notification_email_from kanotify@magedu.comsmtp_connect_timeout 3smtp_server 172.18.5.43router_id LVS_DEVEL}
vrrp_script chk_schedown {script "[[ -f /etc/keepalived/down ]] && exit 1 || exit0"interval 2weight -2}
vrrp_instance VI_1 { interface eth0 state MASTER priority 101 #（大于从服务器） virtual_router_id 87 garp_master_delay 1
authentication { auth_type PASS auth_pass 1221 }
track_interface { eth0 }
virtual_ipaddress { 10.1.1.182 }
track_script { chk_schedown }}virtual_server 10.1.1.182 80 { # （VIP） delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 50 protocol TCP
real_server 10.1.1.167 80 { # （web服务IP） weight 1 HTTP_GET { url { path / status_code 301 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 }}real_server 10.1.1.16880 { # （web服务IP） weight 1 HTTP_GET { url { path / status_code 301 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } }}==========================================================================================附服务器配置文件修改keepalived配置文件（删除原内容，粘贴后修改IP）vim /etc/keepalived/keepalived.conf! Configuration File for keepalived
global_defs {notification_email { linuxedu@foxmail.com mageedu@126.com}notification_email_from kanotify@magedu.comsmtp_connect_timeout 3smtp_server 172.18.5.43router_id LVS_DEVEL}
vrrp_script chk_schedown {script "[[ -f /etc/keepalived/down ]] && exit 1 || exit0"interval 2weight -2}
vrrp_instance VI_1 { interface eth0 state BACKUP priority 100 #（大于从服务器） virtual_router_id 87 garp_master_delay 1
authentication { auth_type PASS auth_pass 1221 }
track_interface { eth0 }
virtual_ipaddress { 10.1.1.182 }
track_script { chk_schedown }}virtual_server 10.1.1.182 80 { # （VIP） delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 51 protocol TCP
real_server 10.1.1.168 80 { # （web服务IP） weight 1 HTTP_GET { url { path / status_code 301 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 }} real_server 10.1.1.167 80 { # （web服务IP） weight 1 HTTP_GET { url { path / status_code 301 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } }}
===========================================================================================查询ipvsadm -Lnservice ipvsadmrestartservice keepalivedrestart web服务段配置（web1和web2）直接粘贴echo 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_announce 修改IP后粘贴/sbin/ifconfig lo:0 192.168.11.31broadcast 192.168.11.31 netmask 255.255.255.255 up/sbin/route add -host 192.168.11.31dev lo:0
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