【云原生】-Zabbix6监控MySQL最佳实践

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前言

zabbix可以用来监控MySQL数据库可用性和性能，保证数据库的安全运营。并提供灵活的通知机制快速定位/解决存在的各种问题。

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⛳️ 1.部署Zabbix服务器

1.zabbix镜像下载
docker pull techerwang/dbhub:jemzabbix62

2.创建一个新的bridge网络
[root@jeames ~]# docker network create --driver bridge --subnet=172.18.12.0/16 --gateway=172.18.1.1 mynet

3.创建容器
docker rm -f jemzabbix6

docker run -d --name jemzabbix6 -h jemzabbix6 \
-p 225:22 -p 23306:3306 -p 280:80 -p 20051:10051 \
--net=mynet --ip 172.18.0.3 \
-v /sys/fs/cgroup:/sys/fs/cgroup \
--privileged=true \
techerwang/dbhub:jemzabbix62 /usr/sbin/init

--查看创建的容器
[root@jeames ~]# docker ps --format "table {{.ID}}\t{{.Names}}\t{{.Status}}" | grep -i jemzabbix6
9b658b6e1a38   jemzabbix6    Up About a minute

--设置容器开机自启动
[root@jeames ~]# docker update --restart=always jemzabbix6

--进入容器
[root@jeames ~]# docker exec -it jemzabbix6 bash
[root@jemzabbix6 /]# cat /etc/redhat-release 
CentOS Linux release 8.2.2004 (Core) 

⛳️ 2.Zabbix登陆使用

IP加端口号，端口号默认为80，可修改，后期下一步执行即可
默认用户名密码：Admin/zabbix

⛳️ 3.安装MySQL

本次采用yum在线rpm在线安装MySQL8.0

#repo下载
[root@mysql8030 ~]# rpm -Uvh https://repo.mysql.com//mysql80-community-release-el8.rpm
Retrieving https://repo.mysql.com//mysql80-community-release-el8.rpm
warning: /var/tmp/rpm-tmp.yHWBFD: Header V4 RSA/SHA256 Signature, key ID 3a79bd29: NOKEY
Verifying...                          ################################# [100%]
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql80-community-release-el8-4  ################################# [100%]
   
#查询yum里的MySQL版本
[root@mysql8030 ~]# yum repolist all | grep mysql
mysql-cluster-8.0-community           MySQL Cluster 8.0 Community       disabled
mysql-cluster-8.0-community-debuginfo MySQL Cluster 8.0 Community - Deb disabled
mysql-cluster-8.0-community-source    MySQL Cluster 8.0 Community - Sou disabled
mysql-connectors-community            MySQL Connectors Community        enabled
mysql-connectors-community-debuginfo  MySQL Connectors Community - Debu disabled
mysql-connectors-community-source     MySQL Connectors Community - Sour disabled
mysql-tools-community                 MySQL Tools Community             enabled
mysql-tools-community-debuginfo       MySQL Tools Community - Debuginfo disabled
mysql-tools-community-source          MySQL Tools Community - Source    disabled
mysql-tools-preview                   MySQL Tools Preview               disabled
mysql-tools-preview-source            MySQL Tools Preview - Source      disabled
mysql80-community                     MySQL 8.0 Community Server        enabled
mysql80-community-debuginfo           MySQL 8.0 Community Server - Debu disabled
mysql80-community-source              MySQL 8.0 Community Server - Sour disabled

#配置安装的MySQL的版本
[root@mysql8030 ~]# yum -y install yum-utils
[root@mysql8030 ~]# yum-config-manager --enable mysql80-community

#查询安装的MySQL的版本
[root@mysql8030 ~]# yum repolist enabled | grep mysql
mysql-connectors-community MySQL Connectors Community
mysql-tools-community      MySQL Tools Community
mysql80-community          MySQL 8.0 Community Server

#安装 MySQL
先执行：yum module disable mysql
再执行：yum -y install mysql-community-server

#初始化MySQL
[root@mysql8030 ~]# systemctl start mysqld
[root@mysql8030 ~]# systemctl status mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2022-09-11 03:32:18 UTC; 2s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 570 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 643 (mysqld)
   Status: "Server is operational"
    Tasks: 39 (limit: 24036)
   Memory: 424.1M
   CGroup: /docker/5cc7e4ce4e1cd6246b7a22e4aad1a32a0eccdab18e67b685023fd37c366be956/system.slice/mysqld.service
           └─643 /usr/sbin/mysqld

Sep 11 03:31:38 mysql8030 systemd[1]: Starting MySQL Server...
Sep 11 03:32:18 mysql8030 systemd[1]: Started MySQL Server.

#查看临时密码
[root@mysql8030 ~]# grep 'temporary password' /var/log/mysqld.log
2022-09-11T03:32:09.311756Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: ?th)lB4Xc-1q

#登陆MySQL后修改密码
[root@mysql8030 ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.30

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> ALTER USER root@'localhost' IDENTIFIED BY 'Jeames@007';
Query OK, 0 rows affected (0.00 sec)

mysql> create user root@'%' identified by 'Jeames@007';
mysql> grant all on *.* to root@'%' with grant option;

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> status
--------------
mysql  Ver 8.0.30 for Linux on x86_64 (MySQL Community Server - GPL)

Connection id:          8
Current database:
Current user:           root@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server version:         8.0.30
Protocol version:       10
Connection:             Localhost via UNIX socket
Server characterset:    utf8mb4
Db     characterset:    utf8mb4
Client characterset:    utf8mb4
Conn.  characterset:    utf8mb4
UNIX socket:            /var/lib/mysql/mysql.sock
Binary data as:         Hexadecimal
Uptime:                 1 min 4 sec

Threads: 2  Questions: 7  Slow queries: 0  Opens: 131  Flush tables: 3  Open tables: 47  Queries per second avg: 0.109

⛳️ 4.安装Agent2

dnf install zabbix-agent2 zabbix-agent2-plugin-mongodb

[root@mysql8030 zabbix]# systemctl restart zabbix-agent2
[root@mysql8030 zabbix]# systemctl enable zabbix-agent2

[root@mysql8030 zabbix]# systemctl state zabbix-agent2       
Unknown operation state.
[root@mysql8030 zabbix]# systemctl status zabbix-agent2 
● zabbix-agent2.service - Zabbix Agent 2
   Loaded: loaded (/usr/lib/systemd/system/zabbix-agent2.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2022-09-11 05:57:57 UTC; 13s ago
 Main PID: 1212 (zabbix_agent2)
    Tasks: 7 (limit: 24036)
   Memory: 11.1M
   CGroup: /docker/5cc7e4ce4e1cd6246b7a22e4aad1a32a0eccdab18e67b685023fd37c366be956/system.slice/zabbix-agent2.service
           └─1212 /usr/sbin/zabbix_agent2 -c /etc/zabbix/zabbix_agent2.conf

Sep 11 05:57:57 mysql8030 systemd[1]: Started Zabbix Agent 2.
Sep 11 05:57:57 mysql8030 zabbix_agent2[1212]: Starting Zabbix Agent 2 (6.2.2)
Sep 11 05:57:57 mysql8030 zabbix_agent2[1212]: Zabbix Agent2 hostname: [Zabbix server]
Sep 11 05:57:57 mysql8030 zabbix_agent2[1212]: Press Ctrl+C to exit.

⛳️ 5.配置agent参数文件

[root@mysql8030 ~]# vi /etc/zabbix/zabbix_agent2.conf
Server=172.18.0.3
ServerActive=172.18.0.4
Hostname=mysql8030
Timeout=10

参数说明：
server改成zabbix服务端的IP地址，Zabbix-server 地址，多个用","隔开
serveractive改成zabbix服务端的IP地址，主动检查本主机数据发送给 Zabbix-server
hostname改成本机的主机名，或本机的IP地址，被监控的主机名，需要和后续 server 端监控的主机名保持一致


sed -i "s/Server=127.0.0.1/Server=172.18.0.3/g" /etc/zabbix/zabbix_agent2.conf
sed -i "s/ServerActive=127.0.0.1/ServerActive=172.18.0.4/g" /etc/zabbix/zabbix_agent2.conf


##重启进程生效
[root@mysql8030 ~]# systemctl restart zabbix-agent2

⛳️ 6.Zabbix Server添加主机

配置-->主机-->创建主机中操作
Zabbix6 自带MySQL模版，无须再使用第三方，也不用自己写监控脚本，
而且模板zabbix-agent2比zabbix-agent，功能更强大，应用也更简单

##主机server进程
[root@jemzabbix6 ~]# netstat -anp | grep 10051

##客户端服务器进程
[root@mysql8030 ~]# netstat -anp | grep 10050
tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      301/zabbix_agentd   
tcp6       0      0 :::10050                :::*                    LISTEN      301/zabbix_agentd  

说明：
1.主机名称和zabbix-agent2.conf文件中Hostname匹配即可
2.agent配置要监控的MySQL服务器IP,端口默认为10050


##zabbix测试是否监控到数据，以下在Zabbix Server端操作
--是否连接mysql
[root@jemzabbix6 ~]# mysql -uroot -p -h172.18.0.4

#查看Server日志
LogFile=/var/log/zabbix/zabbix_server.log
[root@jemzabbix6 ~]# tail -n 50 /var/log/zabbix/zabbix_server.log

#Web监控界面中文乱码处理
1.在windows下面文件夹C:\Windows\Fonts找一个简体字文件例如simkai.ttf
2.复制到zabbix server的文件夹/usr/share/zabbix/fonts
3.注意：zabbix5的文件夹位置为/usr/share/zabbix/assets/fonts
4.覆盖原来的graphfont.ttf文件即可

[root@jeames ~]# docker cp simkai.ttf jemzabbix6:/
[root@jemzabbix6 fonts]# pwd
/usr/share/zabbix/assets/fonts
[root@jemzabbix6 fonts]# cd /
[root@jemzabbix6 /]# cp simkai.ttf /usr/share/zabbix/assets/fonts
[root@jemzabbix6 fonts]# rm -rf graphfont.ttf

5.找到zabbix 字符配置，切换即可,刷新页面，无需重启
find / -name defines.inc.php
/usr/share/zabbix/include/defines.inc.php

define('ZBX_GRAPH_FONT_NAME',           'graphfont'); // font file name
替换graphfont为simkai即可