Zabbix监控MySQL

复制官方MySQL监控的userparameter到安装目录,

# cp /usr/local/src/zabbix-4.2.5/conf/zabbix_agentd/userparameter_mysql.conf /usr/local/zabbix/etc/zabbix_agentd.conf.d/

建立专门用于监控的用户，我这里由于zabbix是直接使用root登陆的，所以我使用zabbix用户进行监控

# mysql -uroot -p
grant all on *.* to "zabbix"@"localhost" identified by "USER_PASSWORD";

编辑/usr/local/zabbix/etc/zabbix_agentd.conf.d/userparameter_mysql.conf

修改前
# cat /usr/local/src/zabbix-4.2.5/conf/zabbix_agentd/userparameter_mysql.conf
# For all the following commands HOME should be set to the directory that has .my.cnf file with password information.

# Flexible parameter to grab global variables. On the frontend side, use keys like mysql.status[Com_insert].
# Key syntax is mysql.status[variable].
UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/var/lib/zabbix mysql -N | awk '{print $$2}'

# Flexible parameter to determine database or table size. On the frontend side, use keys like mysql.size[zabbix,history,data].
# Key syntax is mysql.size[<database>,<table>,<type>].
# Database may be a database name or "all". Default is "all".
# Table may be a table name or "all". Default is "all".
# Type may be "data", "index", "free" or "both". Both is a sum of data and index. Default is "both".
# Database is mandatory if a table is specified. Type may be specified always.
# Returns value in bytes.
# 'sum' on data_length or index_length alone needed when we are getting this information for whole database instead of a single table
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=/var/lib/zabbix mysql -N'

UserParameter=mysql.ping,HOME=/var/lib/zabbix mysqladmin ping | grep -c alive
UserParameter=mysql.version,mysql -V

修改后
# For all the following commands HOME should be set to the directory that has .my.cnf file with password information.

# Flexible parameter to grab global variables. On the frontend side, use keys like mysql.status[Com_insert].
# Key syntax is mysql.status[variable].
UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/usr/local/zabbix/etc  /usr/local/mysql/bin/mysql -uzabbix  -N | awk '{print $$2}'

# Flexible parameter to determine database or table size. On the frontend side, use keys like mysql.size[zabbix,history,data].
# Key syntax is mysql.size[<database>,<table>,<type>].
# Database may be a database name or "all". Default is "all".
# Table may be a table name or "all". Default is "all".
# Type may be "data", "index", "free" or "both". Both is a sum of data and index. Default is "both".
# Database is mandatory if a table is specified. Type may be specified always.
# Returns value in bytes.
# 'sum' on data_length or index_length alone needed when we are getting this information for whole database instead of a single table
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=/usr/local/zabbix/etc /usr/local/mysql/bin/mysql -uzabbix -N'

UserParameter=mysql.ping,HOME=/usr/local/zabbix/etc /usr/local/mysql/bin/mysqladmin -uzabbix  ping | grep -c alive
UserParameter=mysql.version,/usr/local/mysql/bin/mysql -V

UserParameter=mysql.variables[*],HOME=/usr/local/zabbix/etc /usr/local/mysql/bin/mysql -uzabbix -e "show variables like '$1';" | tail -n 1 | awk '{print $$2}'

修改主要指定了zabbix、mysql的位置和登录mysql的用户

创建并修改HOME目录中的.my.cnf

# cat /usr/local/zabbix/etc/.my.cnf 

[mysql]
host=localhost
user=zabbix
password=密码
port=3387

[mysqladmin]
host=localhost
user=zabbix
password=密码
port=3387

修改zabbix_agentd配置文件 ，增加一行

Include=/usr/local/zabbix/etc/zabbix_agentd.conf.d/

重启agentd

# service zabbix_agentd restart