====== lvs構築 ======

  - インストール<code>
yum install --exclude=*.i386 ipvsadm iproute curl keepalived</code>
  - arp<code>
less /etc/sysctl.conf
 net.ipv4.conf.lo.arp_ignore = 1
 net.ipv4.conf.lo.arp_announce = 2
 net.ipv4.conf.eth0.arp_ignore=1
 net.ipv4.conf.eth0.arp_announce=2
sysctl -p</code>
  - lo:0<code>
vi /etc/sysconfig/network-scripts/ifcfg-lo:0
 DEVICE=lo:0
 IPADDR=192.168.24.183　←lvsのvip
 NETMASK=255.255.255.255
 NETWORK=192.168.24.0
 BROADCAST=192.168.24.255
 ONBOOT=yes
 NAME=loopback
/etc/init.d/network restart</code>
  - keepalived.conf<code>
vi /etc/keepalived/keepalived.conf 
 # 
 # Configuration File for keepalived
 # 
 
 global_defs {
    notification_email {
      taro@clown.com
    }
    notification_email_from keepalived@clown
    smtp_server 127.0.0.1
    smtp_connect_timeout 30
    router_id moca_lvs_0
 }
 
 vrrp_instance VI_1 {
     state BACKUP
     interface eth0
     virtual_router_id 51
     priority 100
     advert_int 1
     authentication {
         auth_type PASS
         auth_pass 1111
     }
     virtual_ipaddress {
         192.168.24.183
     }
 }
 
 # for MySQL Slave service
 virtual_server 192.168.24.183 3306 {
     delay_loop 1
     lb_algo wrr
     lb_kind DR
     nat_mask 255.255.255.0
     persistence_timeout 50
     protocol TCP
 
     real_server 192.168.24.233 3306 {
         weight 100
         inhibit_on_failure
         TCP_CHECK {
             connect_port 3306
             connect_timeout 15
         } # TCP_CHECK
     } # real_server
 
     real_server 192.168.24.234 3306 {
         weight 100
         inhibit_on_failure
         TCP_CHECK {
             connect_port 3306
             connect_timeout 15
         } # TCP_CHECK
     } # real_server
 }
 
 # for Kyototycoon service
 virtual_server 192.168.24.183 11221 {
   delay_loop  1
   #lvs_sched   wlc
   lvs_sched   wrr
   lvs_method  DR
   protocol    TCP
 
   # sorry server
   # KT standby server
   sorry_server 192.168.24.230 11221
 
   real_server 192.168.24.229 11221 {
     weight 100
     inhibit_on_failure
     TCP_CHECK {
       connect_port 11221
       connect_timeout 15
     } # TCP_CHECK
   } # real_server
 
 } # virtual_server</code>
  - keepalived start<code>
/etc/init.d/keepalived start</code>