Heartbeat构建Linux双机热备系统v12.doc

天喻信息 使用Heartbeat构建Linux High Availability系统使用Heartbeat构建Linux双机热备系统1 部署环境OS: Redhat Linux AS4 Update2(x86_32), kernel: 2.6.9-22.ELSoftware: Heartbeat ver2.0.7, File: heartbeat-2.0.7.tar.gz Libnet ver1.1.2.1, File: libnet.tar.gz2 Heartbeat简介Heartbeat是Linux-HA的一个开源的Linux High-Availability群集项目, 支持如下应用群集: Web servers LVS director servers Mail servers Database servers Firewalls File servers DNS servers DHCP servers Proxy Caching servers etc.3 安装Heartbeat3.1 添加用户和组 # groupadd -g 800 haclient # useradd -u 800 -g haclient hacluster3.2 编译和安装libnet库 # su - root # cp libnet.tar.gz /usr/local # cd /usr/local # tar xzvf libnet.tar.gz # cd libnet # ./configure # make # make install3.3 编译和安装heartbeat HA # su - root # cp heartbeat-2.0.7.tar.gz /usr/local # cd /usr/local # tar xzvf heartbeat-2.0.7.tar.gz # cd heartbeat-2.0.7 # ./ConfigureMe configure # make # make install备注：/usr/local/lib/libltdl.a(ltdl.o): could not read symbols: Bad value解决方法：yum install libtool-ltdl-devel4 配置Heartbeat service4.1 配置/etc/hosts在所有节点上配置: 192.168.0.24 node1 192.168.0.25 node24.2 配置/etc/ha.d/ha.cf以root身份编辑所有节点的配置文件ha.cf:logfile /var/log/ha.log # Log filekeepalive 2 # Heartbeat intervaldeadtime 30 # How long to say the servers deathwarntime 10udpport 694 # Heartbeat portbcast eth0 # Linux Heartbeat interface#serial /dev/ttyS0 # Heartbeat by serial port #串口心跳，如果用网线可以注释掉该行auto_failback on # How to do when the failure server comes backnode node1 # How many servers in the HA systemnode node2ping 192.168.0.1 #ping a robust server to ensure the servers health;ping网关 #respawn hacluster /usr/lib/heartbeat/ipfail #监控IP失败的脚本，可以注释掉Heartbeat 启动后出现 IP地址被专用，需要改udpport 694 主备机需要改成一样。一般是1000+浮动IP地址为udp 端口4.3 配置/etc/ha.d/authkeys(所有节点) auth 1 1 crc以root身份更改授权文件的权限# chmod 600 authkeys4.4 配置/etc/ha.d/haresources配置所有节点:node1 192.168.0.26 haserver.sh或者cn-edu-I5-19 172.16.2.71/255.255.255.128/eth0 oracle.sh #教育云的配置 （虚拟IP）其中haserver.sh为HA在切换时运行的脚本。位于/etc/rc.d/init.d目录下.如: /etc/rc.d/init.d/haserver.shdate /tmp/ha.txtsu - vas -c vas_server.sh $1exit 0用户vas脚本vas_server.sh如下:if $1 = start ; thenecho Starting vas./home/vas/vas/bin/billing.sh &echo * * * * * /home/vas/vas/bin/billing.sh /dev/null /tmp/cron.vasecho 0,30 * * * * /home/vas/watch1.1/watch.sh /dev/null /tmp/cron.vascrontab /tmp/cron.vasfiif $1 = stop ; thenecho Stopping vas.crontab -recho Sleep 65 seconds.sleep 65 app_name=billingps -ef | grep $app_name | awk print $2 | xargs kill -9 /dev/null 2&1app_name=SMSAgentps -ef | grep $app_name | awk print $2 | xargs kill -9 /dev/null 2&1fiexit 04.5 启动和停止Heartbeatl 启动heartbeat# /etc/init.d/heartbeat startl 停止heartbeat# /etc/init.d/heartbeat stopl Start heartbeat server on all nodes, and add it to /etc/rc.local:# /etc/init.d/heartbeat start5 测试Heartbeat5.1 测试service IP是否成功可以用ping命令测试service IP(如192.168.0.26)是否成功, 也可以在HA的Active机器上使用ifconfig查看网卡是否绑定多个IP地址。5.2 服务脚本是否运行正常可以观察2台机器（1台Active, 1台Standby）是否运行了服务脚本haserver.sh.5.3 HA切换是否正常手工模拟网卡坏掉的情况，将处于Active状态的机