MySQL on Margrop Blog

Stop Letting AI Guess: Connect MySQL, Prometheus, Loki and Grafana to an Agent, Step by Step

Sat, 11 Jul 2026 08:30:00 +0800

Many teams already run MySQL, Prometheus, Loki and Grafana. Yet when an alert fires, the on-call engineer still jumps between four windows: inspect a dashboard, write a PromQL query, search logs for a trace ID, and finally connect to the database to confirm the business record. It is like a hospital that owns a thermometer, medical records, laboratory reports and a monitoring wall, while the doctor still has to visit four rooms and copy every number by hand.

How to Connect to the Host Machine's MySQL Server from Inside a Docker Container

Thu, 30 Sep 2021 13:08:50 +0800

The blogger recently encountered a situation where they copied a database from a server onto the host machine’s MySQL server, wanting to use the local database to test the correctness of their code. However, the project programs are all deployed with a single click via Docker, so it’s necessary to access the local database from within the Docker container. During the exploration, they encountered problems and found solutions.

MySQL Date and DST Conversion Error HOUR_OF_DAY: 0 -> 1 and How to Fix It

Thu, 25 Mar 2021 10:53:15 +0800

Error Occurred When Exporting User Data: HOUR_OF_DAY: 0 -> 1

Exception in thread “main” java.lang.IllegalArgumentException: HOUR_OF_DAY: 0 -> 1 The full error message is as follows:

How to Map JSON Objects Using Generic Hibernate Types

Fri, 29 Jan 2021 16:06:09 +0800

Introduction

In this article, we’ll see how to map JSON columns to JPA entity attributes using the Hibernate Types open-source project.

While you can create your own custom Hibernate type to map JSON column types on Oracle, SQL Server, PostgreSQL, or MySQL, you don’t need to implement your own Hibernate Type since the Hibernate Types project already provides this functionality.

Upgrading or Fresh Installing MariaDB 10.5 on CentOS 7 Using Aliyun Mirror

Fri, 29 Jan 2021 15:42:20 +0800

Update the System First

yum update -y

Edit the yum Configuration File Using Aliyun Mirror

Here MariaDB 10.5 is used as an example

vim /etc/yum.repos.d/MariaDB10.repo

#http://downloads.mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = https://mirrors.aliyun.com/mariadb/yum/10.5/centos7-amd64
gpgkey = https://mirrors.aliyun.com/mariadb/yum/RPM-GPG-KEY-MariaDB
gpgcheck = 1