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 OSLinux”，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: mchdba@sohu.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:"

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

;;

;;

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]# 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.)

[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 ~]#