linux---LVS配置
前提說明：需要配置LVS的兩臺主機，其ip地址分別為：10.134.98.54和10.134.98.55VIP:10.134.98.511.安装
ipvsadm-1.24-6.1.i386.rpmpiranha-0.8.2-1.x86_64.rpm
ipvsadm-1.24-6.x86_64.rpmpiranha-0.8.3.1-3.i386.rpm
查看是64还是32位的方法直接 cat /proc/cpuinfo ，看flags里面有没有 lm (long mode).
rpm -iv ipvsadm-1.24-6.x86_64.rpm
piranha是圖形化工具，可不安裝（其最終操作的結果是生成/etc/sysconfig/ha/lvs.cf配置文件）
2.建立主機之间的信任关系。（AP主機之間）
3./etc/selinux/config 將SELINUX状态设置为disabled.(必須)
SELINUX=disabled
4./etc/sysconfig/ha/lvs.cf
serial_no = 69
primary = 10.134.98.54
service = lvs
backup_active = 1
backup = 10.134.98.55
heartbeat = 1
heartbeat_port = 539
keepalive = 6
deadtime = 18
network = direct
debug_level = NONE
monitor_links = 1
virtual hshwlvs {
active = 1
address = 10.134.98.51 eth0:1
vip_nmask = 255.255.255.0
port = 23
use_regex = 0
load_monitor = none
scheduler = wlc
protocol = tcp
timeout = 6
reentry = 15
quiesce_server = 0
server hshwap01 {
address = 10.134.98.54
active = 1
weight = 1
}
server hshwap02 {
address = 10.134.98.55
active = 1
weight = 1
}
}
5./etc/sysconfig/ha/lvs.sh
service pulse start
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "/proc/sys/net/ipv4/conf/lo/arp_ignore"
cat /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "/proc/sys/net/ipv4/conf/all/arp_ignore"
cat /proc/sys/net/ipv4/conf/all/arp_ignore
echo "1" > /proc/sys/net/ipv4/conf/default/arp_ignore
echo "/proc/sys/net/ipv4/conf/default/arp_ignore"
cat /proc/sys/net/ipv4/conf/default/arp_ignore
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "/proc/sys/net/ipv4/conf/lo/arp_ignore"
cat /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "/proc/sys/net/ipv4/conf/lo/arp_announce"
cat /proc/sys/net/ipv4/conf/lo/arp_announce
echo "2" > /proc/sys/net/ipv4/conf/default/arp_announce
echo "/proc/sys/net/ipv4/conf/default/arp_announce"
cat /proc/sys/net/ipv4/conf/default/arp_announce
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
echo "/proc/sys/net/ipv4/conf/all/arp_announce"
cat /proc/sys/net/ipv4/conf/all/arp_announce
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "/proc/sys/net/ipv4/conf/lo/arp_announce"
cat /proc/sys/net/ipv4/conf/lo/arp_announce
route
ifconfig lo:1 10.134.98.51 broadcast 10.134.98.51 netmask 255.255.255.255 up （廣播地址和虛擬公用地址相同）
route add -host 10.134.98.51 dev lo
6.配置如果成功，如下
# ipvsadm
IP Virtual Server version 1.2.0 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP10.134.98.51:telnet wlc
-> hshwap02:telnet Route 1 0 0
-> hshwap01:telnet Local 1 0 0
通過連接虛IP，查看是否會兩臺主機都可以連線。
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注：當做LVS的主機數目超過2臺，有以下一點注意事項：
1. 從的主機上面service pulse status 狀態為stop(即該服務不啟動)
2. 從的主機/etc/sysconfig/ha/lvs.cf文件中backup后所跟為本機地址（各個備援主機不同），/etc/sysconfig/ha/lvs.sh中內容需設置隨主機啟動（記錄在/etc/rc.d/rc.local中）
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1.查看timeout時間的默認值
#ipvsadm --list --timeout
timeout(tcp tcpfin udp):36000 120 300
根據需要設置timeout時間
ipvsadm --set 1000 100 100
2.服務切換測試：
停掉主LVS服務上的pulse查看slave能否自動接管
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