UltaMonkey-L7 实现高可用负载均衡测试文档
UltaMonkey-L7 实现高可用负载均衡测试文档作者:NetSeek http://www.linuxtone.org(IT运维专家网|集群架构|性能调优)
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一．UltaMoneky-L7 介绍
负载均衡之UltraMonkey-L7为Ultra Monkeyproject一扩展项目，提供基于特定Url字符集及Session persistence
进行的L7交换负载均衡.通过该架构可非常灵活把各种协议及负载均衡方式有机结合，支持High Availability和负载均衡技术.
二．UltaMonek-L7安装
1下载相关软件包wget http://apache.mirror.phpchina.com/apr/apr-1.3.3.tar.gz
•wget http://apache.mirror.phpchina.com/apr/apr-util-1.3.4.tar.bz2
•wgethttp://apache.etoak.com/logging/ ... g4cxx-0.10.0.tar.gz
•wget http://www.packetfactory.net/libnet/dist/libnet.tar.gz
•wget http://hg.linux-ha.org/lha-2.1/archive/STABLE-2.1.4.tar.bz2
•wgethttp://sourceforge.jp/projects/u ... ip?use_mirror=jaist复制代码2.安装相关软件包
Apr安装:# tar zxvf apr-1.3.3.tar.gz
•# cd apr-1.3.3.
•# ./configure --prefix=/usr --libdir=/usr/lib复制代码Apr-tuil安装# tar jxvf apr-util-1.3.4.tar.bz2
•# cd apr-util-1.3.4
•# ./configure --prefix=/usr --libdir=/usr/lib --with-apr=/usr复制代码apache-log4cxx 安装# tar zxvf apache-log4cxx-0.10.0.tar.gz
•# cd apache-log4cxx-0.10.0
•# ./configure --prefix=/usr --libdir=/usr/lib复制代码Libnet安装# tar zxvf libnet.tar.gz
•#cd libnet
•# ./configure &&make &&make install
•复制代码Heartbeat安装# groupadd -g 694 haclient
•# useradd -u 694 -g haclient hacluster 复制代码# yum install glib2-devel•# tar jxvf Heartbeat-STABLE-2-1-STABLE-2.1.4.tar.bz2
•# cd Heartbeat-STABLE-2-1-STABLE-2.1.4
•# ./ConfigureMe configure --disable-swig --disable-snmp-subagent
•# make && make install
•
•# cp doc/ha.cf doc/haresources doc/authkeys /etc/ha.d/复制代码ultramonkey-l7-2.0.0-1-rpm 安装# unzip ultramonkey-l7-2.0.0-1-rpm.zip
•# cd ultramonkey-l7-2.0.0-1-rpm
•# rpm -Uvh ultramonkey-l7-2.0.0-1.i386.rpm // 用rpm安装ultamonkey.复制代码三．UltraMonkey-L7配置(NAT)
方案结构:virtual= 192.168.1.200:80
• real=192.168.1.204:80 masq 1
• real=192.168.1.205:80 masq 1
•HA-IP(DR):
•LVS Director (Master) 192.168.1.202 primarylb.linuxtone.org
•LVS Director (Backup) 192.168.1.203 backuplb.linuxtone.org•RealServer: 192.168.1.204 192.168.1.205
复制代码1.配置/etc/hosts192.168.1.202 primarylb.linuxtone.org
•192.168.1.203 backuplb.linuxtone.org复制代码2.配置ha.cf# vi /etc/ha.d/ha.cf
logfile/var/log/ha-log
•logfacility
•local0
•keepalive2
•deadtime30
•warntime10
•initdead120
•udpport694
•baud
•19200
•serial
•/dev/ttyS0
•# Linux
•#ucasteth2 10.0.0.3
•ucast eth0 192.168.1.203
•#备份机上填写ucast eth0192.168.1.202
•auto_failbackon
•watchdog/dev/watchdog
•#crm on
•nodeprimarylb.linuxtone.org
•nodebackuplb.linuxtone.org
•ping192.168.1.203
•#ping_grouplbgroup 10.0.0.1 10.0.0.2
•ping_grouplbgroup 192.168.1.202 192.168.1.203
•respawnroot /usr/lib/heartbeat/ipfail
•apiauth ipfail gid=root uid=root复制代码3.配置authkeys
# vi/etc/ha.d/authkeys
auth 2
•2 sha1 Hey!
复制代码#chmod 600 /etc/ha.d/authkeys
4.配置haresources
主服务器配置：# vi /etc/ha.d/haresources
primarylb.linuxtone.org192.168.1.200/32/eth0:0 l7vsd l7directord复制代码备份服务器配置：# vi /etc/ha.d/haresources
backuplb.linuxtone.org 192.168.1.200/32/eth0:0 l7vsd l7directord复制代码将相关资源建立链接:# ln -s /usr/sbin/l7vsd /etc/ha.d/resource.d/
# ln -s /etc/init.d/l7directord /etc/ha.d/resource.d/
5.配置l7directord.conf (cat l7directord.cf |grep -v "#")
# vi /etc/ha.d/conf/l7directord.cf
checktimeout=4
•checkinterval=10
•autoreload=yes
•logfile="/var/log/l7directord.log"
•quiescent=no
•virtual=192.168.1.200:80
•real=192.168.1.204:80 masq 1
•real=192.168.1.205:80 masq 1
•module=cinsert --cookie-name 'linuxtone'--cookie-expire 5
•scheduler=wrr
•protocol=tcp
•maxconn=2000复制代码6.配置完成启动heartbeat
# /etc/init.d/heartbeatstart
7. Realserver配置（略，请参考http://www.linuxtone.org 相关文档.）
四. 故障排除与测试.1.查看日志.
# tail -f /var/log/messages 实时监听相看日志变化.
2.查看服务是否正常
# ps -ef |grepl7directord
# ps -ef |grepl7vsd
# ifconfig 或 ip add show
3. # watch l7vsadm?l
Layer-7 Virtual Server version 2.0.0-1
•Prot LocalAddressort ProtoMod Scheduler
•-> RemoteAddressort Forward Weight ActiveConn InactConn
•TCP 192.168.1.200:http cinsert wrr
•-> 192.168.1.204:http Masq 10 1
•-> 192.168.1.205:http Masq 10 0复制代码4. ha.cf 配置错误导致Heartbeat不能正常停止和接管相关资源[提醒]
在测试过程中在backuplb机器上，配置ha.cf的时候是直接copy了primarylb的配置
文件: ucast eth0 192.168.1.202 写成了ucast eth0 192.168.1.203 导致heartbeat不能正
停止和接管资源。所以朋友们在配置过程中尽量要仔细认真，多分析日志.
五.相关参考文档:
1. 负载均衡之UltraMonkey-L7[龙如俊大哥之作]: http://www.linuxtone.org/thread-1351-1-1.html
2. 官方参考文档:http://ultramonkey-l7.sourceforge.jp/index_en.html
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