zabbix--自帶模板監控MySQL服務

zabbix有內置的模板，不過須要修改下配置，配置文件路徑在：

[root@localhost ~]# cd /etc/zabbix/
[root@localhost zabbix]# ls
web  zabbix_agentd.conf  zabbix_agentd.d  zabbix_server.conf  zabbix_server.conf_bak
[root@localhost zabbix]# ll zabbix_agentd.d/userparameter_mysql.conf 
-rw-r--r--. 1 root root 1531 Dec 27  2017 zabbix_agentd.d/userparameter_mysql.conf
[root@localhost zabbix]# 

配置文件裏須要：

一、修改HOME路徑，建立.my.cnf文件。

二、mysql和mysqladmin須要改爲絕對路徑

# 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 "$3_length";; free) echo "data_free";; esac)) from inform
ation_schema.tables$([[ "$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

.my.cnf

[root@localhost zabbix]# pwd
/etc/zabbix
[root@localhost zabbix]# cat .my.cnf 
[mysql]
host=localhost
user=zabbix
password=123456

[mysqladmin]
host=localhost
user=zabbix
password=123456

正常狀況須要建立一個zabbix用戶，限定權限，供zabbix-server調用，不過我這裏監控的是zabbix-server在的數據庫，用戶是現成的。

UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/etc/zabbix  /usr/bin/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 "$3_length";; free) echo "data_free";; esac)) from inform
ation_schema.tables$([[ "$1" = "all" || ! "$1" ]] || echo " where table_schema=\"$1\"")$([[ "$2" = "all" || ! "$2" ]] || echo "and table_name=\"$2\"");" | HOME=/etc/zabbix /usr/bin/mysql
 -N'

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

mysql和mysqladmin路徑能夠經過whereis查看

[root@localhost ~]# whereis mysql
mysql: /usr/bin/mysql /usr/lib/mysql /usr/lib64/mysql /usr/include/mysql /usr/local/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
[root@localhost ~]# whereis mysqladmin
mysqladmin: /usr/bin/mysqladmin /usr/share/man/man1/mysqladmin.1.gz

修改完畢，記得重啓zabbix-agent

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