（一）简介

zabbix在监控mysql数据库时，会使用自带的模板Template App MySQL，是不能直接使用的，因为没有key,而获取不到数据，前端会出现如下报错“Warning: Using a password on the command line interface can be insecure.”报错原因是mysql 5.6以后的版本增加了密码安全策略，在命令行里加上密码就会强制报错，而5.6之前版本可以直接使用的。

前边有篇文章是通过mysql --login-path=local来进行无密码验证登录，而本文是通过另一种方法通过修改/etc/my.cnf来进行无密码验证登录。

错误探究： 这个提示在mysql 5.5之后会出现。而且，这个提示，会被zabbix-servre捕捉到，在zabbix-server.log日志中会出现24123:20160826:101433.609 error reason for "110:mysql.status[Bytes_sent]" changed: Received value [mysqladmin: [Warning] Using a password on the command line interface can be insecure.8991074] is not suitable for value type [Numeric (float)]提示参数不符合在zabbix-server服务器上面，使用zabbix-get命令时[root@localhost ~]# /usr/local/zabbix/bin/zabbix_get -s 172.21.100.12 -p10050 -k mysql.status[Uptime]mysqladmin: [Warning] Using a password on the command line interface can be insecure.522345也就是说zabbix_key获取的key值是“mysqladmin: [Warning] Using a password on the command line interface can be insecure.”而不是522345,造成服务端的数值类型不对，为解决这个问题必须使用无密码登录才可以，为了安全，只允许localhost进行登录。

（二）背景简介

（三）具体实施步骤

一，zabbix_agentd客户端设置

[root@localhost ~]# mysql -uroot -pEnter password: Welcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 756Server version: 5.5.58-log MySQL Community Server (GPL)Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> grant all PRIVILEGES on *.* to lqb@'localhost' identified by '123456';  ###创建一个有权限的访问用户lqb密码设置123456Query OK, 0 rows affected (0.04 sec)mysql> update mysql.user set authentication_string=password('123456') where user='lqb' and Host = 'localhost';     ###更新下改用户的密码Query OK, 1 row affected (0.00 sec)Rows matched: 1  Changed: 1  Warnings: 0mysql> flush privileges;Query OK, 0 rows affected (0.01 sec)mysql> exitBye

2.修改/etc/my.cnf文件创建无密码登录

[root@localhost ~]# vim /etc/my.cnf[client]user=lqbpassword=123456[mysqladmin]host=localhostuser=lqbpassword=123456

3.测试是否可以直接访问，如果输入命令mysql -ulqb直接进去说明已OK。

[root@localhost ~]# mysql -ulqbWelcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 761Server version: 5.5.58-log MySQL Community Server (GPL)Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> select Host,User,authentication_string from mysql.user;+-----------------------+--------+-------------------------------------------+| Host                  | User   | authentication_string                     |+-----------------------+--------+-------------------------------------------+| localhost             | root   |                                           || localhost.localdomain | root   |                                           || 127.0.0.1             | root   |                                           || ::1                   | root   |                                           || %                     | root   | NULL                                      || %                     | zabbix | NULL                                      || localhost             | lqb    | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 || 172.21.100.12         | zabbix | NULL                                      |+-----------------------+--------+-------------------------------------------+8 rows in set (0.01 sec)mysql> exit;Bye[root@localhost scripts]# mysqladmin extended-status |grep -w "Bytes_received" |cut -d"|" -f3   ###有数据返回说明正常 10792596272

4.创建mysql监控脚本在目录/usr/local/zabbix/scripts/chk_mysql.sh并赋予相关的权限。

[root@localhost scripts]# cat /usr/local/zabbix/scripts/chk_mysql.sh #!/bin/bash# -------------------------------------------------------------------------------# FileName:    check_mysql.sh# Revision:    1.0# Date:        2018/01/04# Author:      lqb# Email:       # Website:     # Description: # Notes:       ~# -------------------------------------------------------------------------------# Copyright:   2015 (c) DengYun# License:     GPL# 用户MYSQL_USER='zabbix'MYSQL_USER='lqb'# 密码MYSQL_PWD='123456'# 主机地址/IPMYSQL_HOST='localhost'# 端口MYSQL_PORT='3306'# 数据连接#MYSQL_CONN="/usr/local/mysql/bin/mysqladmin -u${MYSQL_USER} -p${MYSQL_PWD} -h${MYSQL_HOST} -P${MYSQL_PORT}"MYSQL_CONN="/usr/local/mysql/bin/mysqladmin "# 参数是否正确if [ $# -ne "1" ];then     echo "arg error!" fi # 获取数据case $1 in     Uptime)         result=`${MYSQL_CONN} status|cut -f2 -d":"|cut -f1 -d"T"`         echo $result         ;;     Com_update)         result=`${MYSQL_CONN} extended-status |grep -w "Com_update"|cut -d"|" -f3`         echo $result         ;;     Slow_queries)         result=`${MYSQL_CONN} status |cut -f5 -d":"|cut -f1 -d"O"`         echo $result         ;;     Com_select)         result=`${MYSQL_CONN} extended-status |grep -w "Com_select"|cut -d"|" -f3`         echo $result                 ;;     Com_rollback)         result=`${MYSQL_CONN} extended-status |grep -w "Com_rollback"|cut -d"|" -f3`                 echo $result                 ;;     Questions)         result=`${MYSQL_CONN} status|cut -f4 -d":"|cut -f1 -d"S"`                 echo $result                 ;;     Com_insert)         result=`${MYSQL_CONN} extended-status |grep -w "Com_insert"|cut -d"|" -f3`                 echo $result                 ;;     Com_delete)         result=`${MYSQL_CONN} extended-status |grep -w "Com_delete"|cut -d"|" -f3`                 echo $result                 ;;     Com_commit)         result=`${MYSQL_CONN} extended-status |grep -w "Com_commit"|cut -d"|" -f3`                 echo $result                 ;;     Bytes_sent)         result=`${MYSQL_CONN} extended-status |grep -w "Bytes_sent" |cut -d"|" -f3`                 echo $result                 ;;     Bytes_received)         result=`${MYSQL_CONN} extended-status |grep -w "Bytes_received" |cut -d"|" -f3`                 echo $result                 ;;     Com_begin)         result=`${MYSQL_CONN} extended-status |grep -w "Com_begin"|cut -d"|" -f3`                 echo $result                 ;;         *)         echo "Usage:$0(Uptime|Com_update|Slow_queries|Com_select|Com_rollback|Questions|Com_insert|Com_delete|Com_commit|Bytes_sent|Bytes_received|Com_begin)"         ;; esac

[root@localhost zabbix]# chmod +x scripts/chk_mysql.sh [root@localhost zabbix]# chown -R zabbix.zabbix scripts/chk_mysql.sh [root@localhost zabbix]# ll scripts/total 4-rwxr-xr-x 1 zabbix zabbix 2675 Jan  4 04:01 chk_mysql.shnull

5.修改zabbix_agentd.conf添加以下参数：

UserParameter=mysql.version,mysql -VUserParameter=mysql.status[*], /usr/local/zabbix/scripts/chk_mysql.sh $1UserParameter=mysql.ping,/usr/local/mysql/bin/mysqladmin -ulqb ping | grep -c alive

[root@localhost scripts]# grep '^[a-Z]' /usr/local/zabbix/etc/zabbix_agentd.confLogFile=/tmp/zabbix_agentd.logServer=172.20.66.110Hostname=172.21.100.12RefreshActiveChecks=120Timeout=20UserParameter=mysql.version,mysql -VUserParameter=mysql.status[*], /usr/local/zabbix/scripts/chk_mysql.sh $1UserParameter=mysql.ping,/usr/local/mysql/bin/mysqladmin -ulqb ping | grep -c alive

6.重启zabbix_agentd客户端服务，查看有没有报错。

[root@localhost scripts]# /etc/init.d/zabbix_agentd restartRestarting zabbix_agentd (via systemctl):                  [  OK  ][root@localhost scripts]# tail -f /tmp/zabbix_agentd.log  24025:20180104:041135.331 **** Enabled features **** 24025:20180104:041135.331 IPv6 support:           NO 24025:20180104:041135.331 TLS support:            NO 24025:20180104:041135.331 ************************** 24025:20180104:041135.331 using configuration file: /usr/local/zabbix/etc/zabbix_agentd.conf 24025:20180104:041135.331 agent #0 started [main process] 24030:20180104:041135.332 agent #4 started [listener #3] 24028:20180104:041135.332 agent #2 started [listener #1] 24027:20180104:041135.332 agent #1 started [collector] 24029:20180104:041135.333 agent #3 started [listener #2]

二.在zabbix_server端的浏览器设置

[root@localhost slow]# /usr/local/zabbix/bin/zabbix_get -s 172.21.100.12 -p10050 -k mysql.status[Uptime]2165105

2.添加主机。配置--主机填写相关信息。

3.链接相关模板。点击模板选项卡--选择--选中Templeate DB MySQL模板--添加--更新

4.查看监控项有没有红色告警，没有就算正常的。

5.等两分钟(数据默认1分钟来获取数据)，就可以获取相关数据了

至此监控mysql完成。