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HomeDatabaseMysql TutorialHow to monitor MySQL_MariaDB database using Netdata on CentOS 8?

如何在 CentOS 8 上使用 Netdata 监控 MySQL_MariaDB 数据库?

在当今数据驱动的世界中,监控数据库的性能和健康对于确保应用程序的顺利运行和基础设施的整体效率至关重要。当涉及到在CentOS 8上监控MySQL或MariaDB数据库时,Netdata成为一个强大且用户友好的工具。Netdata提供实时洞察各种指标和性能指标,让您能够主动识别瓶颈,优化资源利用,并确保数据库环境的可靠性。

在这篇博文中,我们将探讨如何设置和配置 Netdata 以监控 CentOS 8 上的 MySQL/MariaDB 数据库。我们将引导您完成安装过程,演示与数据库的集成,并展示关键指标和Netdata 提供的可视化。在本教程结束时,您将全面了解如何在 CentOS 8 上使用 Netdata 有效监控和管理 MySQL/MariaDB 数据库。

先决条件

在我们开始设置Netdata并监控CentOS 8上的MySQL/MariaDB数据库之前,您需要确保一些先决条件 

  • CentOS 8  确保您有一个正在运行且可以通过SSH访问的CentOS 8服务器。

  • MySQL/MariaDB  在您的CentOS 8服务器上安装并配置一个可用的MySQL或MariaDB数据库。确保配置正确并且可访问。

  • Netdata  在您的CentOS 8服务器上安装Netdata。要做到这一点,请按照以下步骤操作:

    • 通过 SSH 连接到您的 CentOS 8 服务器。

    • 运行以下命令添加 Netdata 存储库并安装 Netdata

sudo bash -c 'cat << EOF > /etc/yum.repos.d/netdata.repo
[netdata]
name=netdata
baseurl=https://packagecloud.io/netdata/netdata/el/8/\$basearch
gpgcheck=0
enabled=1
EOF'

sudo dnf install -y netdata
  • 启动并启用Netdata 

sudo systemctl start netdata
sudo systemctl enable netdata

配置Netdata进行数据库监控

现在 Netdata 已安装在 CentOS 8 服务器上,是时候配置它来监视 MySQL/MariaDB 数据库了。 Netdata 通过提供特定监控功能的模块来实现这一目标。在本节中,我们将重点配置 Netdata MySQL 模块。

安装 Netdata MySQL 模块

为了监控MySQL/MariaDB数据库,我们需要安装Netdata MySQL模块。请按照以下步骤操作 -

  • 通过SSH访问您的CentOS 8服务器。

  • 运行以下命令安装 MySQL 模块

sudo yum install -y python3-pip
sudo pip3 install mysql-connector-python

将Netdata与MySQL/MariaDB集成

接下来,我们需要配置Netdata与您的MySQL/MariaDB服务器连接。以下是配置步骤 -

  • 编辑Netdata配置文件 

sudo nano /etc/netdata/python.d/mysql.conf
  • 取消注释 [mysql] 部分并配置连接详细信息。根据您的 MySQL/MariaDB 设置提供适当的主机、端口、用户和密码值。

  • 保存更改并退出编辑器。

重新启动 Netdata

要应用配置更改,请重新启动 Netdata 服务 -

sudo systemctl restart netdata

通过安装和配置Netdata的MySQL模块,Netdata将开始监控您的MySQL/MariaDB数据库并收集必要的数据。

使用Netdata监控MySQL/MariaDB数据库

Netdata提供实时洞察各种指标和性能指标,使您能够主动识别瓶颈,优化资源利用,并确保数据库环境的可靠性。

访问 Netdata 仪表板

要访问 Netdata 仪表板,请打开 Web 浏览器并输入 CentOS 8 服务器的 IP 地址或主机名,后跟:19999。例如,如果您的服务器的IP地址是192.168.0.100,则在浏览器地址栏中输入http://192.168.0.100:19999。您将看到一个视觉上吸引人且直观的界面。

导航MySQL模块

一旦您访问Netdata仪表板,通过在侧边栏中点击“MySQL”选项,导航到MySQL模块。在这里,您将找到与您的MySQL/MariaDB数据库相关的丰富信息和可视化。

监控关键指标

Netdata提供实时监控重要的MySQL/MariaDB指标,让您能够密切关注数据库的性能。以下是一些您可以监控的关键指标:

  • 每秒查询数  监控进来的查询速率,以识别可能影响性能的查询负载变化。要访问此指标,请在MySQL模块中导航到"查询指标"部分。

  • 连接 跟踪数据库的活动连接数,帮助您识别潜在的连接相关问题。您可以在“连接指标”部分下找到此指标。

  • InnoDB 缓冲池  分析InnoDB缓冲池的使用情况,优化内存分配,提高查询性能。检查“InnoDB 指标”部分以深入了解缓冲池利用率。

  • CPU 和内存使用情况  密切关注 MySQL/MariaDB 数据库使用的 CPU 和内存资源。 Netdata 提供可视化功能,帮助您识别任何异常的资源使用模式。

可视化和图表

Netdata 以具有视觉吸引力的图表和图形方式呈现指标,使您能够轻松发现趋势和异常情况。这些图表是高度可定制的,使您可以根据监控需求灵活地关注特定指标或时间段。

以下是如何使用 Netdata 的 MySQL 模块监控每秒查询数的示例 -

# Queries per second
SELECT variable_value AS queries_per_second
FROM information_schema.global_status
WHERE variable_name = 'Queries';

通过监控这些指标并利用Netdata提供的可视化工具,您可以深入了解MySQL/MariaDB数据库的性能和健康状况,从而优化其配置、解决问题并确保其高效运行。

自定义和扩展数据库监控

Netdata 提供一系列自定义选项,使您可以根据自己的特定需求定制监控体验。在本节中,我们将探讨如何在 CentOS 8 上使用 Netdata 自定义和扩展 MySQL/MariaDB 数据库监控。

自定义网络数据配置

Netdata允许您根据自己的喜好自定义其配置的各个方面。您可以修改诸如数据收集频率、可视化选项和警报阈值等设置。Netdata的配置文件位于/etc/netdata/netdata.conf。

要自定义配置,请使用文本编辑器打开该文件 -

sudo nano /etc/netdata/netdata.conf

对配置选项进行所需的更改并保存文件。然后,重新启动 Netdata 服务以使更改生效

sudo systemctl restart netdata

配置警报和通知

Netdata提供了一个灵活的警报系统,允许您基于特定的指标和阈值定义警报。当满足特定条件时,这些警报可以通过电子邮件或Slack等多种方式通知您。

要配置警报,您可以编辑警报配置文件 -

sudo nano /etc/netdata/health.d/alarm-notify.conf

在这个文件中,您可以定义触发警报的规则,并指定在触发警报时要采取的操作。

高级监控技术

Netdata提供了超越基本指标的高级监控技术。您可以探索额外的模块和插件来增强您的数据库监控能力。例如,Netdata插件仓库提供了各种第三方插件,可以与Netdata集成,以监控您的MySQL/MariaDB数据库的特定方面。

要发现和安装插件,您可以访问Netdata社区论坛和GitHub上提供的插件存储库。

结论

监控您的MySQL/MariaDB数据库对于确保最佳性能、识别瓶颈和维护数据库环境的可靠性至关重要。通过Netdata,您可以拥有一个强大的工具来监控并实时了解数据库的性能。

In this tutorial, we walk you through the process of setting up Netdata on CentOS 8, configuring it to monitor MySQL/MariaDB, and exploring key metrics and visualizations. By leveraging Netdata's customization options and advanced monitoring technology, you can fine-tune your monitoring experience and ensure your MySQL/MariaDB database is running efficiently.

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