使用zabbix监控mysql的三种方式
1.只是安装agent
2.启用模板监控
3.启用自定义脚本的模板监控
zabbix中默认有mysql的监控模板。默认已经在zabbix2.2及以上的版本中。模板名称：Template App MySQL。
如果没有则要去zabbix官方下载 url：https://zabbix.org/mw/images/d/d4/Template_App_MySQL-2.2.0.xml，然后在Zabbix服务器的前端Web界面的组态->模板页面中选择汇入，在新的页面中导入下载的模板文件。
#模拟环境
mysql1 172.16.160.161 #zabbix server
mysql2 172.16.160.162 #zabbix agent
#mysql配置-在zabbix agent上操作
##添加帐户登录信息等，
执行mysql mysqladmin脚本命令时不需要帐户密码，也不再提示警告
$ cat /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
validate_password = off
innodb_file_per_table = 1
character_set_server=utf8
init_connect='SET NAMES utf8'
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
[mysql] #添加以下内容
user=root
password=Maks.123
[client]
user=root
password=Maks.123
[mysqladmin]
user=root
password=Maks.123
##添加帐户密码
mysql> GRANT USAGE ON *.* TO 'mysqlcheck'@'localhost' IDENTIFIED BY 'mysqlcheck';
mysql> FLUSH PRIVILEGES;
#zabbix配置-在zabbix agent上操作
##安装zabbix_agent并修改配置文件
$ rpm -Uv http://repo.zabbix.com/zabbix/3.2/rhel/7/x86_64/zabbix-agent-3.2.6-1.el7.x86_64.rpm
$ yum install -y zabbix-agent
$ cat /etc/zabbix/zabbix_agentd.conf |grep -v ^# |grep -v ^$
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=0
Server=172.16.160.161 #指向zabbix服务器
ListenPort=10050
ListenIP=0.0.0.0
ServerActive=172.16.160.161 #指向zabbix服务器
Hostname=mysql2 #zabbix服务器上配置主机的时候要用的名称
Include=/etc/zabbix/zabbix_agentd.d/*.conf #这一行是指向模板文件的
$
##添加用来关联mysql的配置文件.my.cnf，
mysql.sock文件通过find / -name mysql.sock找出路径
$ cat /etc/zabbix/.my.cnf
[mysql]
host = localhost
user = mysqlcheck
password = mysqlcheck
socket = /var/lib/mysql/mysql.sock
[mysqladmin]
host = localhost
user = mysqlcheck
password = mysqlchechk
socket = /var/lib/mysql/mysql.sock
##修改zabbix模板配置文件中的mysql路径
这个文件用于制定Zabbix Agent如何获取MySQL数据
我们需要将所有的/var/lib/zabbix修改为当前.my.cnf文件的路径/etc/zabbix。
$ sed -i 's@/var/lib/zabbix@/etc/zabbix@g' /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf
$ cat /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf |grep -v ^#|grep -v ^$
UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/etc/zabbix mysql -N | awk '{print $$2}'
UserParameter=mysql.size[*],bash -c 'echo "select sum($(case "$3" in both|"") echo "data_length+index_length";; data|index) echo "$3_length";; free) echo "data_free";; esac)) from information_schema.tables$([[ "$1" = "all" || ! "$1" ]] || echo " where table_schema=\"$1\"")$([[ "$2" = "all" || ! "$2" ]] || echo "and table_name=\"$2\"");" | HOME=/etc/zabbix mysql -N'
UserParameter=mysql.ping,HOME=/etc/zabbix mysqladmin ping | grep -c alive
UserParameter=mysql.version,mysql -V
##设置完 成之后保存并重启Zabbix Agent
$ systemctl restart zabbix-agent.service
##测试不用帐户密码就可以执行mysqladmin命令
$ mysqladmin ping | grep -c alive
1
#zabbix页面配置-在zabbix server上操作
##创建主机
Configuration—Hosts—创建主机
主机名称，群组选择,agent的IP地址和端口，然后点更新
##使用模板
Configuration—Hosts—主机名称—Tempaltes，搜索MySQL，添加弹出的模板Template App MySQL，然后点更新
注意：选完模板后，要点下添加按钮才行。
##查看监控效果
Monitoring—Graphs,选择组，然后选择host及展示的图形
这时候图形里会多出mysql bandwidth和mysql operations，而且有输出信息
#总结说明
说明一下，安装zabbix_agent后，已经可以监控mysql服务器的性能参数，
不过如果还需要进一步监控做些简单的监控，这时候就要用zabbix自带的模板；
然而如果只需要对mysql数据库做简单的监控，zabbix自带的模板完全能够满足要求；如果有更高的需求那需要自己写脚本，或者使用fromdual插件等。
参考：http://www.fromdual.com/mpm-installation-guide
zabbix在模板中预定义了一些key，但通常情况，并不能满足我们的需求。
幸运的是zabbix提供了自定义key的方法，因此我们可以灵活的监控各种我们想要监控的数据。
##启用
$ vi /etc/zabbix/zabbix_agentd.conf
UnsafeUserParameters=1
$ cat /etc/zabbix/zabbix_agentd.conf |grep -v ^# |grep -v ^$
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=0
Server=172.16.160.161 #指向zabbix服务器
ListenPort=10050
ListenIP=0.0.0.0
ServerActive=172.16.160.161 #指向zabbix服务器
Hostname=mysql2 #zabbix服务器上配置主机的时候要用的名称
Include=/etc/zabbix/zabbix_agentd.d/*.conf #这一行是指向模板文件的
UnsafeUserParameters=1
$ vi /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf
#UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/etc/zabbix mysql -N | awk '{print $$2}'
UserParameter=mysql.status[*],/script/getmysqlinfo.sh $1 $2
$ cat /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf |grep -v ^#|grep -v ^$
UserParameter=mysql.status[*],/script/getmysqlinfo.sh $1 $2
UserParameter=mysql.size[*],bash -c 'echo "select sum($(case "$3" in both|"") echo "data_length+index_length";; data|index) echo "$3_length";; free) echo "data_free";; esac)) from information_schema.tables$([[ "$1" = "all" || ! "$1" ]] || echo " where table_schema=\"$1\"")$([[ "$2" = "all" || ! "$2" ]] || echo "and table_name=\"$2\"");" | HOME=/etc/zabbix mysql -N'
UserParameter=mysql.ping,HOME=/etc/zabbix mysqladmin ping | grep -c alive
UserParameter=mysql.version,mysql -V
$
脚本内容：可从https://github.com/flashyhl/Zabbix-Monitor/blob/master/zabbix_mysql/script/getmysqlinfo.sh下载并修改
修改变量定义和删除-u$User -p$Password，不在命令中使用帐户密码，因为我们前面已经在my.cnf文件中配置了帐户密码
```bash
$ cat /script/getmysqlinfo.sh
#!/bin/bash
#Name: MySQLMontior.sh
#From: flashyhl <2015/08/06>
#Action: Zabbix monitoring mysql plug-in
MySQlBin=/usr/bin/mysql
MySQLAdminBin=mysqladmin
Host=172.16.160.162
User=root
Password=Maks.123
if [[ $# == 1 ]];then
case $1 in
Ping)
result=`$MySQLAdminBin -h$Host ping|grep alive|wc -l`
echo $result
;;
Threads)
result=`$MySQLAdminBin -h$Host status|cut -f3 -d":"|cut -f1 -d"Q"`
echo $result
;;
Questions)
result=`$MySQLAdminBin -h$Host status|cut -f4 -d":"|cut -f1 -d"S"`
echo $result
;;
Slowqueries)
result=`$MySQLAdminBin -h$Host status|cut -f5 -d":"|cut -f1 -d"O"`
echo $result
;;
Qps)
result=`$MySQLAdminBin -h$Host status|cut -f9 -d":"`
echo $result
;;
Slave_IO_State)
result=`if [ "$($MySQlBin -h$Host -e "show slave status\G"| grep Slave_IO_Running|awk '{print $2}')" == "Yes" ];then echo 1; else echo 0;fi`
echo $result
;;
Slave_SQL_State)
result=`if [ "$($MySQlBin -h$Host -e "show slave status\G"| grep Slave_SQL_Running|awk '{print $2}')" == "Yes" ];then echo 1; else echo 0;fi`
echo $result
;;
Key_buffer_size)
result=`$MySQlBin -h$Host -e "show variables like 'key_buffer_size';"| grep -v Value |awk '{print $2/1024^2}'`
echo $result
;;
Key_reads)
result=`$MySQlBin -h$Host -e "show status like 'key_reads';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Key_read_requests)
result=`$MySQlBin -h$Host -e "show status like 'key_read_requests';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Key_cache_miss_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'key_reads';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'key_read_requests';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%1.4f\n",$1/$2*100);}'`
echo $result
;;
Key_blocks_used)
result=`$MySQlBin -h$Host -e "show status like 'key_blocks_used';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Key_blocks_unused)
result=`$MySQlBin -h$Host -e "show status like 'key_blocks_unused';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Key_blocks_used_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'key_blocks_used';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'key_blocks_unused';"| grep -v Value |awk '{print $2}')| awk '{if(($1==0) && ($2==0))printf("%1.4f\n",0);else printf("%1.4f\n",$1/($1+$2)*100);}'`
echo $result
;;
Innodb_buffer_pool_size)
result=`$MySQlBin -h$Host -e "show variables like 'innodb_buffer_pool_size';"| grep -v Value |awk '{print $2/1024^2}'`
echo $result
;;
Innodb_log_file_size)
result=`$MySQlBin -h$Host -e "show variables like 'innodb_log_file_size';"| grep -v Value |awk '{print $2/1024^2}'`
echo $result
;;
Innodb_log_buffer_size)
result=`$MySQlBin -h$Host -e "show variables like 'innodb_log_buffer_size';"| grep -v Value |awk '{print $2/1024^2}'`
echo $result
;;
Table_open_cache)
result=`$MySQlBin -h$Host -e "show variables like 'table_open_cache';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Open_tables)
result=`$MySQlBin -h$Host -e "show status like 'open_tables';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Opened_tables)
result=`$MySQlBin -h$Host -e "show status like 'opened_tables';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Open_tables_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'open_tables';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'opened_tables';"| grep -v Value |awk '{print $2}')| awk '{if(($1==0) && ($2==0))printf("%1.4f\n",0);else printf("%1.4f\n",$1/($1+$2)*100);}'`
echo $result
;;
Table_open_cache_used_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'open_tables';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show variables like 'table_open_cache';"| grep -v Value |awk '{print $2}')| awk '{if(($1==0) && ($2==0))printf("%1.4f\n",0);else printf("%1.4f\n",$1/($1+$2)*100);}'`
echo $result
;;
Thread_cache_size)
result=`$MySQlBin -h$Host -e "show variables like 'thread_cache_size';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Threads_cached)
result=`$MySQlBin -h$Host -e "show status like 'Threads_cached';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Threads_connected)
result=`$MySQlBin -h$Host -e "show status like 'Threads_connected';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Threads_created)
result=`$MySQlBin -h$Host -e "show status like 'Threads_created';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Threads_running)
result=`$MySQlBin -h$Host -e "show status like 'Threads_running';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_free_blocks)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_free_blocks';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_free_memory)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_free_memory';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_hits)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_hits';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_inserts)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_inserts';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_lowmem_prunes)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_lowmem_prunes';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_not_cached)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_not_cached';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_queries_in_cache)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_queries_in_cache';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_total_blocks)
result=`$MySQlBin -h$Host -e "show status like 'Qcache_total_blocks';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Qcache_fragment_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'Qcache_free_blocks';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'Qcache_total_blocks';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%1.4f\n",$1/$2*100);}'`
echo $result
;;
Qcache_used_rate)
result=`echo $($MySQlBin -h$Host -e "show variables like 'query_cache_size';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'Qcache_free_memory';"| grep -v Value |awk '{print $2}')| awk '{if($1==0)printf("%1.4f\n",0);else printf("%1.4f\n",($1-$2)/$1*100);}'`
echo $result
;;
Qcache_hits_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'Qcache_hits';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'Qcache_inserts';"| grep -v Value |awk '{print $2}')| awk '{if($1==0)printf("%1.4f\n",0);else printf("%1.4f\n",($1-$2)/$1*100);}'`
echo $result
;;
Query_cache_limit)
result=`$MySQlBin -h$Host -e "show variables like 'query_cache_limit';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Query_cache_min_res_unit)
result=`$MySQlBin -h$Host -e "show variables like 'query_cache_min_res_unit';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Query_cache_size)
result=`$MySQlBin -h$Host -e "show variables like 'query_cache_size';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Sort_merge_passes)
result=`$MySQlBin -h$Host -e "show status like 'Sort_merge_passes';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Sort_range)
result=`$MySQlBin -h$Host -e "show status like 'Sort_range';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Sort_rows)
result=`$MySQlBin -h$Host -e "show status like 'Sort_rows';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Sort_scan)
result=`$MySQlBin -h$Host -e "show status like 'Sort_scan';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Handler_read_first)
result=`$MySQlBin -h$Host -e "show status like 'Handler_read_first';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Handler_read_key)
result=`$MySQlBin -h$Host -e "show status like 'Handler_read_key';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Handler_read_next)
result=`$MySQlBin -h$Host -e "show status like 'Handler_read_next';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Handler_read_prev)
result=`$MySQlBin -h$Host -e "show status like 'Handler_read_prev';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Handler_read_rnd)
result=`$MySQlBin -h$Host -e "show status like 'Handler_read_rnd';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Handler_read_rnd_next)
result=`$MySQlBin -h$Host -e "show status like 'Handler_read_rnd_next';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Com_select)
result=`$MySQlBin -h$Host -e "show status like 'com_select';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Com_insert)
result=`$MySQlBin -h$Host -e "show status like 'com_insert';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Com_insert_select)
result=`$MySQlBin -h$Host -e "show status like 'com_insert_select';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Com_update)
result=`$MySQlBin -h$Host -e "show status like 'com_update';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Com_replace)
result=`$MySQlBin -h$Host -e "show status like 'com_replace';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Com_replace_select)
result=`$MySQlBin -h$Host -e "show status like 'com_replace_select';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Table_scan_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'Handler_read_rnd_next';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'com_select';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%1.4f\n",$1/$2*100);}'`
echo $result
;;
Open_files)
result=`$MySQlBin -h$Host -e "show status like 'open_files';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Open_files_limit)
result=`$MySQlBin -h$Host -e "show variables like 'open_files_limit';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Open_files_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'open_files';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show variables like 'open_files_limit';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%1.4f\n",$1/$2*100);}'`
echo $result
;;
Created_tmp_disk_tables)
result=`$MySQlBin -h$Host -e "show status like 'created_tmp_disk_tables';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Created_tmp_tables)
result=`$MySQlBin -h$Host -e "show status like 'created_tmp_tables';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Created_tmp_disk_tables_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'created_tmp_disk_tables';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'created_tmp_tables';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%1.4f\n",$1/$2*100);}'`
echo $result
;;
Max_connections)
result=`$MySQlBin -h$Host -e "show variables like 'max_connections';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Max_used_connections)
result=`$MySQlBin -h$Host -e "show status like 'Max_used_connections';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Processlist)
result=`$MySQlBin -h$Host -e "show processlist" | grep -v "Id" | wc -l`
echo $result
;;
Max_connections_used_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'Max_used_connections';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show variables like 'max_connections';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%1.4f\n",$1/$2*100);}'`
echo $result
;;
Connection_occupancy_rate)
result=`echo $($MySQlBin -h$Host -e "show status like 'Threads_connected';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show variables like 'max_connections';"| grep -v Value |awk '{print $2}')| awk '{if($2==0)printf("%1.4f\n",0);else printf("%5.4f\n",$1/$2*100);}'`
echo $result
;;
Table_locks_immediate)
result=`$MySQlBin -h$Host -e "show status like 'Table_locks_immediate';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Table_locks_waited)
result=`$MySQlBin -h$Host -e "show status like 'table_locks_waited';"| grep -v Value |awk '{print $2}'`
echo $result
;;
Engine_select)
result=`echo $($MySQlBin -h$Host -e "show status like 'Table_locks_immediate';"| grep -v Value |awk '{print $2}') $($MySQlBin -h$Host -e "show status like 'table_locks_waited';"| grep -v Value | awk '{print $2}') | awk '{if($2==0)printf("%1.4f\n",0);else printf("%5.4f\n",$1/$2*100);}'`
echo $result
;;
*)
echo -e "\033[33mUsage: ./getmysqlinfo {Ping|Threads|Questions|Slowqueries|Qps|Slave_IO_State|Slave_SQL_State|Key_buffer_size|Key_reads|Key_read_requests|Key_cache_miss_rate|Key_blocks_used|Key_blocks_unused|Key_blocks_used_rate|Innodb_buffer_pool_size|Innodb_log_file_size|Innodb_log_buffer_size|Table_open_cache|Open_tables|Opened_tables|Open_tables_rate|Table_open_cache_used_rate|Thread_cache_size|Threads_cached|Threads_connected|Threads_created|Threads_running|Qcache_free_blocks|Qcache_free_memory|Qcache_hits|Qcache_inserts|Qcache_lowmem_prunes|Qcache_not_cached|Qcache_queries_in_cache|Qcache_total_blocks|Qcache_fragment_rate|Qcache_used_rate|Qcache_hits_rate|Query_cache_limit|Query_cache_min_res_unit|Query_cache_size|Sort_merge_passes|Sort_range|Sort_rows|Sort_scan|Handler_read_first|Handler_read_key|Handler_read_next|Handler_read_prev|Handler_read_rnd|Handler_read_rnd_next|Com_select|Com_insert|Com_insert_select|Com_update|Com_replace|Com_replace_select|Table_scan_rate|Open_files|Open_files_limit|Open_files_rate|Created_tmp_disk_tables|Created_tmp_tables|Created_tmp_disk_tables_rate|Max_connections|Max_used_connections|Processlist|Max_connections_used_rate|Table_locks_immediate|Table_locks_waited|Engine_select|Connection_occupancy_rate} \033[0m"
;;
esac
fi
```