MySQL

How to Deploy a Nacos Cluster with One Click Using Ansible?

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How to Deploy a Nacos Cluster with One Click Using Ansible?

Use Ansible to achieve one-click deployment of a 3-node Nacos cluster. Definition of the hosts file [root@localhost ansible]# cat inventory/hosts [all:vars] # ansible_ssh_pass: Host password # ansible_user: Host account ansible_become=true ansible_ssh_pass=123456 ansible_ssh_user=weihu ansible_become_pass=123456 ansible_become_user=root ansible_become_method=sudo [nacos] 192.168.10.150 nacos_db_init=true 192.168.10.151 192.168.10.152 Definition of global variable file [root@localhost ansible]# cat inventory/all.yml all: vars: mysql_nacos_host: "192.168.10.128" mysql_nacos_port: "3306" … Read more

Practical Implementation of MySQL Deployment with Ansible

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Practical Implementation of MySQL Deployment with Ansible

1. Overview of Ansible Ansible is an open-source automation tool for IT operations, created by Michael DeHaan in 2012 and acquired by Red Hat in 2015 for over $100 million. It is developed in Python and manages remote nodes via SSH protocol without the need to install any client agents on the controlled end (Agentless). … Read more

Linux Tutorial: Getting Started with Clickhouse and Maxwell (Part 2)

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Linux Tutorial: Getting Started with Clickhouse and Maxwell (Part 2)

Introduction: In the previous chapter, we discussed the basics of Clickhouse and its deployment in a Linux environment. In this chapter, we will learn how to synchronize and update data using Maxwell. This will be explained in a straightforward manner. Please ensure that your server has MySQL database and RabbitMQ middleware installed, along with a … Read more

Stop Tying Down MySQL! The Ultimate Guide to Nacos Embedded Derby Solutions and Database Selection

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Stop Tying Down MySQL! The Ultimate Guide to Nacos Embedded Derby Solutions and Database Selection

When you are struggling locally with Nacos and exclaim, “Installing MySQL, configuring master-slave, changing ports… I just want to run a demo locally!” In fact, 90% of developers do not know: you can start Nacos with zero dependencies without installing MySQL—the secret lies in the embedded database Derby. 1. Derby: The Overlooked King of Embedded … Read more

Minimalist Linux Deployment of Enterprise-Level MySQL Server | High Performance Support for Production Environments!

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Minimalist Linux Deployment of Enterprise-Level MySQL Server | High Performance Support for Production Environments!

^_^Hello everyone, I am from Code Sea Intelligence!^_^ In enterprise applications, Linux is the preferred operating system for servers, primarily used for databases, middleware servers, and application servers. It is also leading in the deployment of large models that have recently gained popularity! 01 — Environment Preparation Download the Linux version of the MySQL server. … Read more

Developing and Debugging WEB Projects Using the XP Panel on Linux

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Developing and Debugging WEB Projects Using the XP Panel on Linux

Click the blue text above ● Follow Jie Chuang Yuan Linux When developing and debugging WEB projects, the configuration of the development environment can sometimes be cumbersome. The XP Panel can be used to integrate the environment. Official website of XP Panel: https://www.xp.cn/ 1. You can use the installation script of the XP Panel for … Read more

Linux Emergency Response – Common Service Logs

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Linux Emergency Response - Common Service Logs

System Logs btmp /var/log/btmp records all login attempts that failed, displaying the last ten entries. root@mon0dy-ubuntu:~# lastb –time-format iso -10 root ssh:notty 58.56.52.226 2023-03-11T14:30:23+0800 – 2023-03-11T14:30:23+0800 (00:00) root ssh:notty 58.56.52.226 2023-03-11T14:30:20+0800 – 2023-03-11T14:30:20+0800 (00:00) root ssh:notty 58.56.52.226 2023-03-11T14:30:16+0800 – 2023-03-11T14:30:16+0800 (00:00) root ssh:notty 58.56.52.226 2023-03-11T14:30:05+0800 – 2023-03-11T14:30:05+0800 (00:00) root ssh:notty 58.56.52.226 2023-03-11T14:30:02+0800 – 2023-03-11T14:30:02+0800 (00:00) … Read more

Real Linux Troubleshooting Scenarios: MySQL/MariaDB Server Configuration and Management

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Real Linux Troubleshooting Scenarios: MySQL/MariaDB Server Configuration and Management

Scenario 274: MySQL/MariaDB Service Fails to Start Issue: MySQL/MariaDB service fails to start. Solution: Check the MySQL/MariaDB error log for details: tail -f /var/log/mysql/error.log Verify if there are errors in the MySQL/MariaDB configuration file: cat /etc/my.cnf # or cat /etc/mysql/my.cnf Check for port conflicts: netstat -tulnp | grep 3306 Ensure there is enough disk space. … Read more

Resolving MySQL Startup Issues in Linux Environment: InnoDB Initialization Has Started

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Resolving MySQL Startup Issues in Linux Environment: InnoDB Initialization Has Started

Hello everyone, I am Yaoshan, today I will discuss theMySQL startup issues Cause The server was rebooted, and after the server started, I found that the MySQL program did not start, the error message is as follows: 2025-04-19T12:46:47.648559Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.2025-04-19T12:46:55.913703Z 0 [Warning] [MY-000081] [Server] option 'max_allowed_packet': unsigned value 107374182400 … Read more

Guide to Installing MySQL 5.7 on Linux Without Docker

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Guide to Installing MySQL 5.7 on Linux Without Docker

1. Introduction As of April 20, 2025, the latest version of MySQL is 9.2.0, which I have not specifically studied. New versions always come with some new features, and those interested can check the official website for more information. Different versions can affect the execution of certain statements; for example, there are significant differences between … Read more