LVS+Keepalived负载均衡架构搭建
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步骤：
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1 ?在43和45机器上操作
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安装lvs和keepalived
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# yum install ipvs*
# ipvsadm
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#tar zxvf keepalived-1.2.7.tar.gz
#cd keepalived-1.1.15
#./configure ?&& make && make install
#find / -name keepalived ?# 查看keepalived位置 ? ? ? ? ? ? ? ?
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#cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
#cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
#mkdir /etc/keepalived
#cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
#cp /usr/local/sbin/keepalived /usr/sbin/
#service keepalived start|stop ? ? #做成系统启动服务方便管理.
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?配置keepalived
vi /etc/keepalived/keepalived.conf
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bal_defs {
? ?notification_email {
? ?email_from sns-lvs@gmail.com
? ?smtp_server 127.0.0.1
? ?router_id LVS_DEVEL
}
vrrp_instance VI_1 {
? ? state MASTER ? ? #?备份服务器上将MASTER改为BACKUP
? ? interface eth1
? ? lvs_sync_daemon_inteface eth1
? ? virtual_router_id 51
? ? priority 100 ? ?#?备份服务上将100改为90
? ? advert_int 1
? ? authentication {
? ? ? ? auth_type PASS
? ? ? ? auth_pass 1111
? ? }
? ? virtual_ipaddress {
? ? ? ? 10.27.0.40
? ? }
}
virtual_server 10.27.0.40 5222 {
? ? delay_loop 6
? ? lb_algo wrr
? ? lb_kind DR
? ? persistence_timeout 60
? ? protocol TCP
? ? real_server 10.27.0.34 5222 {
? ? ? ? weight 3
? ? ? ? TCP_CHECK {
? ? ? ? connect_timeout 10
? ? ? ? nb_get_retry 3
? ? ? ? delay_before_retry 3
? ? ? ? connect_port 5222
? ? ? ? }
? ? }
? ? real_server 10.27.0.36 5222 {
? ? ? ? weight 3
? ? ? ? TCP_CHECK {
? ? ? ? connect_timeout 10
? ? ? ? nb_get_retry 3
? ? ? ? delay_before_retry 3
? ? ? ? connect_port 5222
? ? ? ? }
? ? ?}
}
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# service keepalived start ?# 启动lvs
# ip add ? # 查看lvs状况
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?2 ?34和36机器上的配置
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# cd /opt
# vi?lvs_real.sh
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cription: Config realserver
#Written by : http://kerry.blog.51cto.com
SNS_VIP=10.27.0.40
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/etc/rc.d/init.d/functions
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case "$1" in
start)
? ? ? ?/sbin/ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
? ? ? ?/sbin/route add -host $SNS_VIP dev lo:0
? ? ? ?echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
? ? ? ?echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
? ? ? ?echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
? ? ? ?echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
? ? ? ?sysctl -p >/dev/null 2>&1
? ? ? ?echo "RealServer Start OK"
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? ? ? ?;;
stop)
? ? ? ?/sbin/ifconfig lo:0 down
? ? ? ?/sbin/route del $SNS_VIP >/dev/null 2>&1
? ? ? ?echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
? ? ? ?echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
? ? ? ?echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
? ? ? ?echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
? ? ? ?echo "RealServer Stoped"
? ? ? ?;;
*)
? ? ? ?echo "Usage: $0 {start|stop}"
? ? ? ?exit 1
esac
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exit 0
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# chmod a+x?lvs_real.sh?
# ./lvs_real.sh start
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