一、heartbeat准备
1、接上文HA集群准备工作
2、 安装heartbeat-ldirectord组件包
[root@node1 heartbeat]# yum localinstall heartbeat-ldirectord-2.1.4-12.el6.x86_64.rpm
3、ldirectord组件简介
ldirectord依赖于自己的配置文件来生成ipvs的规则，因此，定义LVS集群、添加RS都是在ldirectord的配置文件中指定，而无需手动执行ipvsadm命令。ldirectord对LVS集群的director高可用，并对LVS进群的RS提供健康状态监测，若某节点出现故障，则会把它从集群系统中剔除，并在其回复正常后，将它重新加入集群系统。ldirectord还可以调用ipvsadm命令创建LVS路由表信息，只需要在/etc/ha.d/ldirectord.cf配置文件中指明即可。
4、基本信息
二、配置
RS：
1、准备RS脚本#!/bin/bashvip=192.168.0.17interface="lo:0"case $1 instart) echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce ifconfig $interface $vip broadcast $vip netmask 255.255.255.255 up route add -host $vip dev $interface ;;stop) echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/eth0/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce echo 0 > /proc/sys/net/ipv4/conf/eth0/arp_announce ifconfig $interface down ;;status) if ifconfig lo:0 | grep $vip &> /dev/null; then echo "ipvs is running." else echo "ipvs is stopped." fi ;;*) echo "please input : `basename $0` {start|stop|status}" exit 1esac[root@node3 ~]# chmod +x rs.sh2、准备httpd[root@node3 ~]# yum install httpd[root@node3 ~]# echo "This is RS" > /var/www/html/index.html[root@node3 ~]# service httpd start[root@node3 ~]# curl 192.168.0.20This is RS[root@node3 ~]# ./rs.sh start
主备Director测试
[root@node1 ~]# ifconfig eth0:0 192.168.0.17 broadcast 192.168.0.17 netmask 255.255.255.255 up[root@node1 ~]# route add -host 192.168.0.17 dev eth0:0[root@node1 ~]# ipvsadm -A -t 192.168.0.17:80 -s rr[root@node1 ~]# ipvsadm -a -t 192.168.0.17:80 -r 192.168.0.20 -g
[root@node1 ~]# ipvsadm -C[root@node1 ~]# route del -host 192.168.0.17[root@node1 ~]# ifconfig eth0:0 down
主Director：node1配置
1、cp样例配置文件[root@node1 ~]# cd /usr/share/doc/heartbeat-ldirectord-2.1.4/[root@node1 heartbeat-ldirectord-2.1.4]# cp ldirectord.cf /etc/ha.d[root@node1 heartbeat-ldirectord-2.1.4]# cd /etc/ha.d2、配置文件##全局配置# Global Directives ##健康状态检测超时时间间隔 checktimeout=3 ##每一秒检查一次 checkinterval=1#fallback=127.0.0.1:80##自动装载配置文件autoreload=yes##日志文件logfile="/var/log/ldirectord.log"##日志文件级别#logfile="local0"##邮件通知警告信息#emailalert="admin@x.y.z"##邮件通知间隔1小时#emailalertfreq=3600##邮件通知所有的状态信息#emailalertstatus=all##是否工作于静默模式quiescent=yes##虚拟服务配置# Sample for an http virtual service##VIP virtual=192.168.0.17:80##RS gate为dr类型 real=192.168.0.20:80 gate #real=192.168.6.3:80 gate #real=192.168.6.6:80 gate##backserver fallback=127.0.0.1:80 gate##健康状态检查基于http协议 service=http##请求的页面 request=".health.html"##检查request=“”页面中的字符串是否一致 receive=""##对多个虚拟主机进行检查 virtualhost=some.domain.com.au##调度类型为rr scheduler=rr##持久连接时长 #persistent=600##掩码 #netmask=255.255.255.255##基于tcp的检查，集群服务类型 protocol=tcp##检查类型为交互式检查##checktype：connect是传输层检查，ping是网络层检查，negotlate是应用层检查##当checktype=negotlate时，ldirectord将基于指定的协议与各RS建立连接，完成应用层检查 checktype=negotia##检查端口为80 checkport=80##请求的页面 request="index.html"##请求的字符串检查 #receive="Test Page"##对虚拟主机检查 #virtualhost= 3、准备web服务，node1作为back server提供sorry server服务[root@node1 ha.d]# vim /var/www/html/index.htmlThis is sorry server(node1)[root@node1 ha.d]# service httpd startStarting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 192.168.0.15 for ServerName [ OK ][root@node1 ha.d]# curl 192.168.0.15This is sorry server(node1)4、将配置文件cp给node2[root@node1 ha.d]# scp ldirectord.cf node2:/etc/ha.d/
备Director：node2配置
[root@node2 ~]# vim /var/www/html/index.html This is sorry server(node2)[root@node2 ~]# service httpd startStarting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 192.168.0.16 for ServerName [ OK ][root@node2 ~]# curl 192.168.0.16This is sorry server(node2)
RS准备测试页
[root@node3 ~]# echo "ok" > /var/www/html/.health.html
启动服务
[root@node1 ~]# service heartbeat start; ssh node2 'service heartbeat start'
gui界面配置资源
1、定义资源组ipvs，定义集群ip资源（vip）
2、定义ipvs规则，lsb格式不提供参数，ocf格式的资源代理须提供配置文件
3、启动资源
4、验证node2节点
[root@node2 ~]# ipvsadm -L -nIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 192.168.0.17:80 rr -> 192.168.0.20:80 Route 1 0 0 [root@node2 ~]# ip add show eth02: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:15:ea:32 brd ff:ff:ff:ff:ff:ff inet 192.168.0.16/24 brd 192.168.0.255 scope global eth0 inet 192.168.0.17/24 brd 192.168.0.255 scope global secondary eth0 inet6 fe80::20c:29ff:fe15:ea32/64 scope link valid_lft forever preferred_lft forever
5、验证负载均衡集群效果
6、检测RS下线，director错误页面
[root@node3 ~]# mv /var/www/html/.health.html /var/www/html/a.html[root@node2 ~]# ipvsadm -L -nIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 192.168.0.17:80 rr -> 127.0.0.1:80 Local 1 0 0 -> 192.168.0.20:80 Route 0 0 0
同理检查node1。
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