LVS 集群配置

e21e1

用yum安装（先检查下yum是否可用，如果可用，就用yum安装）
#yum install ipvsadm piranha

修改LVS配置
#cd /etc/sysconfig/ha/
先对lvs默认配置文件进行备份，再创建新的配置文件
#mv lvs.cf lvs.cf.back
#vi lvs.cf   ####内容如下

serial_no = 39
primary = 10.5.20.12
service = lvs
backup_active = 1
backup = 10.5.20.13
heartbeat = 1
heartbeat_port = 539
keepalive = 3
deadtime = 9
network = direct
debug_level = NONE
monitor_links = 0
syncdaemon = 0
virtual XP {
     active = 1
     address = 10.5.20.14 bond0:0
     vip_nmask = 255.255.255.0
     port = 80
     send = "GET / HTTP/1.0\r\n\r\n"
     expect = "HTTP"
     use_regex = 0
     load_monitor = none
     scheduler = wlc
     protocol = tcp
     timeout = 5
     reentry = 5
     quiesce_server = 0
     server xp1 {
         address = 10.5.20.12
         active = 1
         weight = 1
     }
     server xp2 {
         address = 10.5.20.13
         active = 1
         weight = 1
     }
}

在两台物理机上分别启动心跳服务:
#  service pulse start
Starting pulse:                                            [  OK  ]
这时，能在主物理机10.5.20.12上看到负载均衡网卡已启动,
而10.5.20.13上是没有这个网卡的:
# ifconfig

bond0     Link encap:Ethernet  HWaddr 00:0C:29:E9:2F:F0  
          inet addr:10.5.20.12  Bcast:10.5.23.255  Mask:255.255.252.0
          inet6 addr: fe80::20c:29ff:fee9:2ff0/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:2039549 errors:0 dropped:0 overruns:0 frame:0
          TX packets:692572 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:748901428 (714.2 MiB)  TX bytes:153254084 (146.1 MiB)

bond0:0   Link encap:Ethernet  HWaddr 00:0C:29:E9:2F:F0  
          inet addr:10.5.20.14  Bcast:10.5.20.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
当主物理机的服务关闭时，在10.5.20.13上看到网卡已启动:
# ifconfig

bond0     Link encap:Ethernet  HWaddr 00:0C:29:4C:FC:A4  
          inet addr:10.5.20.13  Bcast:10.5.23.255  Mask:255.255.252.0
          inet6 addr: fe80::20c:29ff:fe4c:fca4/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:19679 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16633 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:18527316 (17.6 MiB)  TX bytes:1528599 (1.4 MiB)

bond0:0   Link encap:Ethernet  HWaddr 00:0C:29:4C:FC:A4  
          inet addr:10.5.20.14  Bcast:10.5.20.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1


查看虚拟服务器状态:
# ipvsadm -ln

IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.5.20.14:80 wlc

将服务设成开机自启动:
# chkconfig --level 345 pulse on