zabbix3.0 监控mysql服务器性能实现过程

-->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/rhel/6/x86_64/zabbix-agent-3.0.0-2.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

 

blog源地址：http://blog.csdn.net/mchdba/article/details/51288767，谢绝转载

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:        2016/04/22 # Author:      tim # Email:       [email protected] 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

 

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}'

 

 

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 zabbix_get [1291]: Get value error

 

[root@hch_test_121_12 ~]#/usr/local/zabbix/bin/zabbix_get -s 192.168.1.21 -p10050 -k system.info

zabbix_get [1291]: Get value error: cannotconnect to [[10.254.1.21]:10050]: [111] Connection refused

[root@hch_test_121_12 ~]#