构建Zabbix高可用监控平台

下载heartbeat 依赖环境包cd /usr/srcwget http://hg.linux-ha.org/heartbeat-STABLE_3_0/archive/958e11be8686.tar.bz2 wget http://hg.linux-ha.org/glue/archive/0a7add1d9996.tar.bz2wget https://github.com/ ClusterLabs/resource-agents/archive/v3.9.6.tar.gz安装相关依赖库yum -y install gcc gcc-c++ autoconf automake libtool glib2-devel libxml2-devel bzip2 bzip2-devel e2fsprogs-devel libxslt-devel libtool-ltdl-devel asciidoc psmisc创建运行heartbeat 组及用户groupadd haclientuseradd -g haclient hacluster -s /sbin/nologin

部署heartbeat 编译安装依赖环境安装cluster-gluecd /usr/srctar -jxvf 0a7add1d9996.tar.bz2cd Reusable-Cluster-Components-glue--0a7add1d9996/./autogen.sh./configure --prefix=/usr/local/heartbeat --with-daemon-user=hacluster --with-daemon-group=haclient --enable-fatal-warnings=no LIBS='/lib64/libuuid.so.1' make && make install
安装resource-agentstar -zxvf v3.9.6.tar.gzcd resource-agents-3.9.6./autogen.sh./configure --prefix=/usr/local/heartbeat --with-daemon-user=hacluster --with-daemon-group=haclient --enable-fatal-warnings=no LIBS='/lib64/libuuid.so.1' make && make install
安装heartbeattar -jxvf 958e11be8686.tar.bz2cd Heartbeat-3-0-958e11be8686/./bootstrap
声明编译环境变量export CFLAGS="$CFLAGS -I/usr/local/heartbeat/include -L/usr/local/heartbeat/lib"./configure --prefix=/usr/local/heartbeat --with-daemon-user=hacluster --with-daemon-group=haclient --enable-fatal-warnings=no LIBS='/lib64/libuuid.so.1' make && make install
复制heartbeat 核心配置文件cp doc/{ha.cf,haresources,authkeys} /usr/local/heartbeat/etc/ha.d/授权认证文件600权限chmod 600 /usr/local/heartbeat/etc/ha.d/authkeys创建目录，配置网卡支持插件文件mkdir -p /usr/local/heartbeat/usr/lib/ocf/lib/heartbeat/cp /usr/lib/ocf/lib/heartbeat/ocf-* /usr/local/heartbeat/usr/lib/ocf/lib/heartbeat/
注：一般启动时会报错因为ping 和ucast 这些配置都需要插件支持，需要将lib64下面的插件软连接到lib目录才不会抛出异常 ln -svf /usr/local/heartbeat/lib64/heartbeat/plugins/RAExec/* /usr/local/heartbeat/lib/heartbeat/ plugins/RAExec/ln -svf /usr/local/heartbeat/lib64/heartbeat/plugins/* /usr/local/heartbeat/lib/heartbeat/plugins/
Heartbeat配置sed -i 's/#auth 1/auth 1/g' /usr/local/heartbeat/etc/ha.d/authkeyssed -i 's/#1 crc/1 crc/g' /usr/local/heartbeat/etc/ha.d/authkeys
2个节点分别复制drbd服务drbddisk脚本到heartbeat目录(编译安装heartbeat，默认没有该脚本)，实现DRBD主从节点资源组的挂载和卸载 cp -p /etc/ha.d/resource.d/drbddisk /usr/local/heartbeat/etc/ha.d/resource.d/
配置haresources资源文件，用于指定双机系统的主节点、 VIP、子网掩码、广播地址及启动的服务等集群资源设置Zabbix-HA1为主从节点角色中为主节点，同时2节点分别执行echo 'Zabbix-HA1 IPaddr::192.168.8.4/24/eth0 drbddisk::drbd0 Filesystem::/dev/drbd0::/opt::xfs' >> /usr/local/heartbeat/etc/ha.d/haresources注：drbd0为drbd创建资源名称，一定要与其一致，否则无法用drbddisk脚本实现DRBD主从节点资源组的挂载和卸载

分别在2节点配置heartbeat的主配置文件ha.cfmv /usr/local/heartbeat/etc/ha.d/ha.cf /usr/local/heartbeat/etc/ha.d/ha.cfbak Zabbix-HA1节点执行cat > /usr/local/heartbeat/etc/ha.d/ha.cf <<EOFdebugfile /var/log/ha-debug.log logfile /var/log/heartbeat.log ucast eth1 172.16.38.2keepalive 2warntime 6deadtime 10initdead 120udpport 694 auto_failback off node Zabbix-HA1 node Zabbix-HA2 ping 192.168.8.1respawn hacluster /usr/local/heartbeat/libexec/heartbeat/ipfail apiauth ipfail gid=haclient uid=haclusterEOF

Zabbix-HA2节点执行cat > /usr/local/heartbeat/etc/ha.d/ha.cf <<EOFdebugfile /var/log/ha-debug.log logfile /var/log/heartbeat.log ucast eth1 172.16.38.1keepalive 2warntime 6deadtime 10initdead 120udpport 694 auto_failback off node Zabbix-HA1 node Zabbix-HA2 ping 192.168.8.1respawn hacluster /usr/local/heartbeat/libexec/heartbeat/ipfail apiauth ipfail gid=haclient uid=haclusterEOF注：ucast eth1参数中配置IP地址为对方节点的心跳IP，否则heartbeat无法进行心跳检测和服务故障切换
两机器启动heartbeat服务systemctl enable heartbeatsystemctl start heartbeat  #重点：heartbeat开机启动顺序，先主节点启动，后从节点启动 systemctl stop heartbeat   #实现主从节点之间切换及VIP漂移
查看端口号netstat -anup|grep 694

从节点停止zabbix-server服务和禁止开机自启动systemctl stop zabbix-server  &&  systemctl disable zabbix-server
从节点移除zabbix程序和webmkdir -p /data/backup  &&  mv /opt/zabbix/ /data/backup  &&  mv /opt/www_zabbix /data/backup/
主节点禁用zabbix-server服务开机自启动，服务由heartbeat托管systemctl disable zabbix-server
主节点都执行以下操作heartbeat接管zabbix-server服务启动停止cat > /usr/local/heartbeat/etc/ha.d/resource.d/zabbix-server <<EOF #!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin export PATH
case "$1" in start)systemctl start zabbix-server;;stop)systemctl stop zabbix-server;;esac exit 0 EOF
赋予执行权限chmod +x /usr/local/heartbeat/etc/ha.d/resource.d/zabbix-server
脚本拷贝到从节点scp -P36091 -p /usr/local/heartbeat/etc/ha.d/resource.d/zabbix-server 192.168.8.187:/usr/local/heartbeat/etc/ha.d/resource.d
把zabbix-server脚本名称放入haresources文件中vim /usr/local/heartbeat/etc/ha.d/haresourcesZabbix-HA1 IPaddr::192.168.8.4/24/eth0 drbddisk::drbd0 Filesystem::/dev/drbd0::/opt::xfs zabbix-server
Zabbix-HA1主节点拷贝到Zabbix-HA2从节点scp -P36091 /usr/local/heartbeat/etc/ha.d/haresources 192.168.8.187:/usr/local/heartbeat/ etc/ha.d/
防止mysql开机启动优先于禁用大页服务，导致tokudb 引擎加载失败(2个节点都要设置) systemctl disable mysqlecho 'systemctl start mysql' >> /etc/rc.localecho 'systemctl start keepalived' >> /etc/rc.local

Zabbix-HA2节点备份zabbix相关配置表(有VIP地址节点导出)注：拷贝sql文件到Zabbix-HA1节点，导入sql
Zabbix-HA1节点配置my.cnf 忽略要同步的历史大表############Open GTID Mode#########gtid_mode = on enforce_gtid_consistency =true log_slave_updates=truemaster-info-repository=TABLE relay-log-info-repository=TABLE slave-parallel-workers=4###########MySQL AB Replication##########relay-log = /data/mysql/relay-log auto-increment-increment = 2auto-increment-offset = 1replicate-wild-ignore-table=zabbix.history replicate-wild-ignore-table=zabbix.history_uint replicate-wild-ignore-table=zabbix.history_str replicate-wild-ignore-table=zabbix.history_log replicate-wild-ignore-table=zabbix.history_text
Zabbix-HA2节点配置my.cnf############Open GTID Mode#########gtid_mode = on enforce_gtid_consistency =true log_slave_updates=truemaster-info-repository=TABLE relay-log-info-repository=TABLE slave-parallel-workers=4###########MySQL AB Replication##########relay-log = /data/mysql/relay-log auto-increment-increment = 2auto-increment-offset = 2replicate-wild-ignore-table=zabbix.history replicate-wild-ignore-table=zabbix.history_uint replicate-wild-ignore-table=zabbix.history_str replicate-wild-ignore-table=zabbix.history_log replicate-wild-ignore-table=zabbix.history_text注：主从复制各个实例server-id必须唯一，分别重启mysql服务生效
分别在2个主节点上设置主从复制在Zabbix-HA1节点和Zabbix-HA2节点上分别创建具有复制权限的用户grant replication slave on *.* to repl@'192.168.8.%' identified by 'yanghui';flush privileges;
Zabbix-HA1节点授权允许Zabbix-HA2同步相关的表，才能开启start slave;)change master to master_host='192.168.8.187',master_user='repl',master_password='yanghui',master_auto_position=1;flush privileges;
Zabbix-HA2节点授权(允许从Zabbix-HA1同步相关的表，才能开启start slave;)change master to master_host='192.168.8.186',master_user='repl',master_password='yanghui',master_auto_position=1;flush privileges;
双节点分别授权允许通过VIP地址远程登陆MySQL Zabbix-HA1节点节点执行(8.186)grant all on *.* to root@'192.168.8.187' identified by 'Zabbix@2021'; select user,host,password from mysql.user;
Zabbix-HA2节点执行(8.187)grant all on *.* to root@'192.168.8.186' identified by 'Zabbix@2021'; select user,host,password from mysql.user;
分别登陆MySQL主从节点启动主从复制start slave;show slave status\G;
drbd挂载的节点更改zabbix-web的IP地址为VIP地址/opt/www_zabbix/conf/zabbix.conf.phpsed -i 's/192.168.8.186/192.168.8.5/g' /opt/www_zabbix/conf/zabbix.conf.php sed -i 's/192.168.8.186/192.168.8.5/g ' /opt/zabbix/etc/zabbix/zabbix_server.conf注：表示绿色为宿主机节点IP，红色为数据库的VIP，需重启zabbix-server服务

keepalived+mysql HA方案完善补充缘由：使用脚本和定时任务监测keepalived 服务运行状态，实现mysql 故障切换后，keepalived 通过后台定时任务实现自动恢复服务。
keepalived脚本分别放到2个节点的/etc/keepalived目录echo '*/2 * * * * root /etc/keepalived/monitor-keepalived.sh' >> /etc/crontab systemctl restart crond注：修改定时任务调用脚本后，一定要重启crond任务才会生效
heartbeat+zabbix HA方案完善补充缘由：heartbeat本身不对应用服务状态做判断，需要编写脚本来判断服务异常，弥补该架构的不足。
部署supervisoryum install -y supervisormkdir -p /etc/supervisor/config.decho_supervisord_conf > /etc/supervisor/supervisord.conf
配置supervisord主配置文件cat >> /etc/supervisor/supervisord.conf <<EOF [include]files = /etc/supervisor/config.d/*.ini EOF
配置监视zabbix-server进程cat > /etc/supervisor/config.d/zabbix-server.ini <<EOF [program:zabbix-heartbeat]user=rootdirectory= /etc/supervisorcommand= /bin/sh /etc/supervisor/heartbeat.sh numprocs=1autostart=true autorestart=true startretries=3 EOF
启动supervisord服务systemctl enable supervisord && systemctl start supervisord && systemctl status supervisord
补充：heartbeat编译参数注解：vim /usr/local/heartbeat/etc/ha.d/ha.cfdebugfile /var/log/ha-debug  ##用于记录heartbeat的调试信息logfile/var/log/ha-log  ##用于记录heartbeat的日志信息logfacilitylocal0  ##设置heartbeat的日志,这里用的是系统日志keepalive 2  ##设定心跳(监测)时间时间为2秒deadtime 30  ##指定若备用节点在30秒内未收到主节点心跳信号,则接管主服务器资源warntime 10  ##指定心跳延迟的时间为10秒,10秒内备节点不能接收主节点心跳信号，即往日志写入警告日志，但不会切换服务initdead 60  ##系统启动或重启后预留的忽略时间段，取值至少为deadtime的两倍udpport 694  ##广播/单播通讯使用的Udp端口#bcast ens32  ##使用网卡eno32发送心跳检测#mcast eth0 225.0.0.1 694 1 0  ##采用网卡eth0的Udp多播来组织心跳，一般在备用节点ucast ens32 192.168.1.64
##采用网卡eth32的udp单播来组织心跳，后面跟的IP地址为双机对方IP地址auto_failback on  ##定义当主节点恢复后，是否将服务自动切回，争抢VIP地址node xuegod63.cn node xuegod64.cn ping 192.168.1.1
##主节点名称##备用节点名称##通过ping网关检测心跳是否正常，仅用来测试网络
apiauth ipfail gid=haclient uid=hacluster  ##设置启动IPfail的用户和组respawn hacluster /usr/local/heartbeat/libexec/heartbeat/ipfail  ##指定和heartbeat一起启动、关闭的进程注：Bcast、ucast和mcast分别代表广播、单播和多播，是组织心跳的的方式，任选其一