监控思路
先在zabbix主机上面配置好MySQL服务器的信息,添加好zabbix自带的Template App MySQL模版,然后去mysql服务器上安装agent,再添加mysql监控脚本。
1,建立mysql host groups组模板是 zabbix系统提供的,进入 zabbix web 后台,Configuration-->Hosts groups-->点击“Create host group”-->选择template选项卡,选择模板“TemplateApp MySQL,Templdate OS Linux”,最后点击update 即可(032.png)
2,建立hosts模板是 zabbix系统提供的,进入zabbix web 后台,configuration-->hosts-->点击你的主机 name-->选择template选 项卡,选择模板“Template App MySQL”,最后点击左边的“Add”按钮,最后点击“update”按钮即可(033.png)
3,rpm部署agent客户端rpm方式安装: #添加zabbix帐号
groupadd zabbix
useradd zabbix -g zabbix -s /sbin/nologin
# 下载安装包
wget http://repo.zabbix.com/zabbix/3. ... .0-2.el6.x86_64.rpm
rpm -ivh zabbix-agent-3.0.0-2.el6.x86_64.rpm
# 报错信息如下:
[root@db_m1_slave_1 zabbix]# rpm -ivh zabbix-agent-3.0.0-2.el6.x86_64.rpm
warning: zabbix-agent-3.0.0-2.el6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 79ea5ed4: NOKEY
error: Failed dependencies:
libodbc.so.2()(64bit) is needed by zabbix-agent-3.0.0-2.el6.x86_64
[root@db_m1_slave_1 zabbix]#
# 解决方法:
yum -y install unixODBC
启动agent: # 启动:
/usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
# 添加开机自启动:
chkconfig --add zabbix_agentd
4,源码方式agent客户端
tar zxvf zabbix-3.0.2.tar.gz
cd zabbix-3.0.2
./configure --enable-agent --with-mysql
make
make install
# 其它zabbix_agentd.conf配置信息和rpm方式一样
5,开始mysql性能监控这里可以采用zabbix自带的mysql模版,但是也需要在mysql服务器上准备获取mysql status的脚本chk_mysql.sh,zabbix通过调用这个脚本来获取mysql的运行信息。
在配置文件zabbix_agentd.conf里面添加mysql监控信息: # vim /etc/zabbix/zabbix_agentd.conf
UserParameter=mysql.version,mysql -V
UserParameter=mysql.status,/usr/local/zabbix/scripts/chk_mysql.sh $1
UserParameter=mysql.ping,mysqladmin -uzabbix -pys_ipowerlong0418 -P3306 -h127.0.0.1 ping | grep -c alive
添加mysql帐号: GRANT PROCESS,SUPER,REPLICATION CLIENT ON *.* TO zabbix@'127.0.0.1' IDENTIFIED BY 'ys_ipowerlong0418';
添加check脚本权限:
chmod u+x /usr/local/zabbix/chk_mysql.sh chown -R zabbix.zabbix /usr/local/zabbix/chk_mysql.sh
去zabbix服务器上面检查基本mysql服务器信息是否能正常获取到,zabbix_get -s 192.168.1..62 -p10050 -k"system.cpu.load[all,avg15]";: [root@hch_test_121_12 html]# zabbix_get -s 192.168.1..62 -p10050 -k "system.cpu.load[all,avg15]";
0.050000
[root@hch_test_121_12 html]#
接下来准备mysql的运行信息监控,需要准备新的mysql监控脚本chk_mysql.sh,/usr/local/zabbix/chk_mysql.sh: - #!/bin/sh
- # -------------------------------------------------------------------------------
- # FileName: check_mysql.sh
- # Revision: 1.0
- # Date: 2017/03/24
- # Author: 定位
- # Email: admin@cnblackhat.com
- MYSQL_SOCK="/usr/local/mysql/mysql.sock"
- MYSQL_USER='zabbix'
- MYSQL_PWD='ys_ipowerlong0418'
- MYSQL_HOST='127.0.0.1'
- MYSQL_PORT='3306'
- ARGS=1
- if [ $# -ne "$ARGS" ];then
- echo "Please input one arguement:"
- fi
- case $1 in
- Uptime)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK status|cut -f2 -d":"|cut -f1 -d"T"`
- echo $result
- ;;
- Com_update)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_update"|cut -d"|" -f3`
- echo $result
- ;;
- Slow_queries)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK status |cut -f5 -d":"|cut -f1 -d"O"`
- echo $result
- ;;
- Com_select)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_select"|cut -d"|" -f3`
- echo $result
- ;;
- Com_rollback)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_rollback"|cut -d"|" -f3`
- echo $result
- ;;
- Questions)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK status|cut -f4 -d":"|cut -f1 -d"S"`
- echo $result
- ;;
- Com_insert)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_insert"|cut -d"|" -f3`
- echo $result
- ;;
- Com_delete)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_delete"|cut -d"|" -f3`
- echo $result
- ;;
- Com_commit)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_commit"|cut -d"|" -f3`
- echo $result
- ;;
- Bytes_sent)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Bytes_sent" |cut -d"|" -f3`
- echo $result
- ;;
- Bytes_received)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Bytes_received" |cut -d"|" -f3`
- echo $result
- ;;
- Com_begin)
- result=`/usr/local/mysql/bin/mysqladmin -u$MYSQL_USER -h$MYSQL_HOST -p${MYSQL_PWD} -S $MYSQL_SOCK extended-status |grep -w "Com_begin"|cut -d"|" -f3`
- echo $result
- ;;
- *)
- echo "Usage:$0(Uptime|Com_update|Slow_queries|Com_select|Com_rollback|Questions)"
- ;;
- esac
复制代码
脚本准备完后,重启agent,然后在zabbix-server服务器上测试是否可以获取到mysql的status信息: [root@hch_test_121_12 html]# zabbix_get -s 192.168.1..71 -p10050 -k mysql.status[Com_update]
Warning: Using a password on the command line interface can be insecure.
78055
[root@hch_test_121_12 html]#
[root@hch_test_121_12 html]#
[root@hch_test_121_12 html]# zabbix_get -s 192.168.1..71 -p10050 -k mysql.status[Com_insert]
Warning: Using a password on the command line interface can be insecure.
51332
[root@hch_test_121_12 html]#
6,监控性能视图监控脚本运行正常后,就会在zabbix-server的host下面的graph里面看到mysql的监控性能视图,monitoringààGraphsààHost(选择mysql服务器)ààGraph(选择mysql选项),可以看到性能监控视图,zabbix自带模版默认有2个性能图,这些图要等运行一段时间后才能画出来:
041.png,MySQL operations:
042.png,MySQL bandwidth:
7,mysqladmin的缺陷当mysql down了的时候,zabbix监控不到。因为默认的MySQL is down 的触发器的触发条件是mysql.ping.last(0),mysql.ping的实现方式是UserParameter=mysql.ping,mysqladmin -uzabbix -pys_ipowerlong0418-P3306 -h127.0.0.1 ping | grep -c alive,当mysql服务停止了后,mysqladmin执行报错是一推错误信息返回不了数字0,所以zabbix触发不了,所以zabbix界面会看到problems但是不会触发报警动作的,也就意味着你不会第一时间接到email、短信、电话报警了。
所以必须改正不能用mysqladmin这种方式,想到了用telnet mysql端口的方式来判断,如下所示:UserParameter=mysql.ping,netstat -ntpl |grep 3317 |grep mysql |wc|awk '{print $1}' 3317就是mysql运行的端口号,这样当mysqlis alive那么返回为1,当mysql is down返回为0,就满足了zabbix的mysql.ping.last(0)=0的触发条件了。
修改zabbix_agentd.conf配置信息: #先移除默认的配置
mv /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf /usr/local/zabbix/
# 添加新的配置
vim /etc/zabbix/zabbix_agentd.conf
UserParameter=mysql.version,mysql -V
UserParameter=mysql.status,/usr/local/zabbix/chk_mysql.sh $1
UserParameter=mysql.ping,netstat -ntpl |grep 3317 |grep mysql |wc |awk '{print $1}'
实战模拟:
在zabbix客户端把mysql服务给关闭了,执行service mysqld stop
等待报警.........
收到报警了,如下图:
mysql服务重新启动,会收到mysql恢复的提醒,如下图:
最后就是mysql性能的监控,关于增删改查,慢查询,回滚,提交等等的监控,这些就是通过脚本来实现的,如下图:
8,报错汇总记录
8.1报错信息[root@db_m1_slave_1 zabbix-3.0.2]# tail -f/var/log/zabbix/zabbix_agentd.log …… 17336:20160422:163813.319 no active checkson server [192.168.121.12:10051]: host [hch_test_121_12] not found 17336:20160422:164013.503 no active checks onserver [192.168.121.12:10051]: host [hch_test_121_12] not found
解决办法: 出现该错误的原因是一般是zabbix_agentd.conf里面的Hostname和前端zabbix web里面的配置不一样所造成的,即在zabbix web页面Monitoring->Configuration->Hosts 页面的Host Name和zabbix_agentd.conf里面的Hostname要一样。
再看后台日志信息,正常如下: [root@db_m1_slave_1 zabbix-3.0.2]# tail -f/var/log/zabbix/zabbix_agentd.log 17468:20160422:164350.284 IPv6 support: YES 17468:20160422:164350.284 TLS support: YES 17468:20160422:164350.284************************** 17468:20160422:164350.284 using configurationfile: /etc/zabbix/zabbix_agentd.conf 17468:20160422:164350.293 agent #0 started[main process] 17469:20160422:164350.294 agent #1 started[collector] 17470:20160422:164350.294 agent #2 started[listener #1] 17471:20160422:164350.294 agent #3 started[listener #2] 17472:20160422:164350.295 agent #4 started[listener #3] 17473:20160422:164350.295 agent #5 started[active checks #1]
8.2问题is not suitable for value type [Numeric (unsigned)] and datatype [Decimal]
12394:20160422:200640.676 error reason for "db_master_1:mysql.status[Questions]" changed: Received value [Warning: Using a password on the command line interface can be insecure.18463244] is not suitable for value type [Numeric (float)]
12393:20160422:200642.678 error reason for "db_master_1:mysql.status[Uptime]" changed: Received value [Warning: Using a password on the command line interface can be insecure.580661] is not suitable for value type [Numeric (unsigned)] and data type [Decimal]
后台zabbix服务器日志:
[root@hch_test_121_12 ~]# /usr/local/zabbix/bin/zabbix_get -s 192.168.1..71 -p10050 -k mysql.status[Com_update]
Warning: Using a password on the command line interface can be insecure.
92315
[root@hch_test_121_12 ~]#
解决办法是,在zabbix客户端,添加用户名密码配置,这样避免shell密码外泄也不会报错,(这里报这种错误是因为返回的结果集中有字符串提醒信息,而后台zabbix的item的是decimal所以存储不进去报错):
vim /usr/local/mysql/my.cnf
[mysqladmin]
user=zabbix
password=ys_ipowerlong0418
然后重启zabbix_agent
然后在后台zabbix测试,没有报多余的信息:
[root@hch_test_121_12 ~]# /usr/local/zabbix/bin/zabbix_get -s 192.168.1..71 -p10050 -k mysql.status[Com_insert]
58272
[root@hch_test_121_12 ~]#
之后再看zabbix_server后台日志,正常了不会报错了,如下所示:
12855:20160422:233520.636 item "db_master_2:mysql.status[Bytes_received]" became supported
12857:20160422:233521.636 item "db_master_2:mysql.status[Bytes_sent]" became supported
12854:20160422:233522.637 item "db_master_2:mysql.status[Com_begin]" became supported
12856:20160422:233523.638 item "db_master_2:mysql.status[Com_commit]" became supported
12857:20160422:233524.641 item "db_master_2:mysql.status[Com_delete]" became supported
12855:20160422:233525.642 item "db_master_2:mysql.status[Com_insert]" became supported
12856:20160422:233526.642 item "db_master_2:mysql.status[Com_rollback]" became supported
12854:20160422:233527.643 item "db_master_2:mysql.status[Com_select]" became supported
12855:20160422:233528.645 item "db_master_2:mysql.status[Com_update]" became supported
12857:20160422:233529.646 item "db_master_2:mysql.status[Questions]" became supported
12856:20160422:233530.646 item "db_master_2:mysql.status[Slow_queries]" became supported
8.3报错Check access restrictions in Zabbix agent configuration:[root@hch_test_121_12 alertscripts]#zabbix_get -s 192.168.1..72 -p10050 -k "system.hostname"; zabbix_get [17730]: Check accessrestrictions in Zabbix agent configuration
[root@hch_test_121_12 alertscripts]# 解决: 配置文件坏了,copy一个备份的过来,改下,重启agent。
在zabbix服务器上测试: [root@hch_test_121_12 alertscripts]#/usr/local/zabbix/bin/zabbix_get -s 192.168.1.63 -p10050 -k mysql.ping (Not all processes could be identified,non-owned process info willnot be shown, you would have to be root to see it all.) 0 [root@hch_test_121_12 alertscripts]#
去mysql服务器上赋予s权限 [root@db_m1_slave2 soft]# chmod +s /bin/netstat You have new mail in /var/spool/mail/root [root@db_m1_slave2 soft]#
8.4、场景:因为使用了netstat -p参数。权限问题,zabbix_agentd是zabbix用户启动的,默认不能执行netstat -p等命令,导致从服务器取到的自动发现脚本为空
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
解决方法 :
chmod +s /bin/netstat
chmod +s 是什么意思
为了方便普通用户执行一些特权命令,SUID/SGID程序允许普通用户以root身份暂时执行该程序,并在执行结束后再恢复身份。
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