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The main functions of Keystone are as follows: 1 manage users and their permissions; 2. Maintain the Endpoint of OpenStack service; 3 Authentication and authentication. 4.1 configure Keystone database #Create database in any control node, the database is automatically synchronized, take controller 1 ...

Mysqldump is a logical backup method. Its biggest defect is that the speed of backup and recovery is slow. For a database less than 50G, this speed is acceptable. But if the database is very large, it is not suitable to use mysqldump backup again. At this time, you need a kind of easy-to-use and efficient tool. Xtrabackup is one of them, known ...

How to install MySQL on Ubuntu 20.04 MySQL is the most popular open source relational database management system. It's fast, easy to use, easy to expand, and part of the popular LAMP and LEMP. This guide explains how to install and protect MySQL on Ubuntu 20.04. prerequisite Make sure you are logged in as sudo user Install MySQL on Ubuntu At th ...

J2WEB course design example I found a good article about database query display error: Analysis of mysql coding errors. And then I have a crack free version navicat . extraction code: dv6k catalog Project Name: xixijiaxiang online e-book City Project background: (if I think about it myself, I won ...

Enterprise Actual LNMP High Performance Server_phpMyAdmin deployment In LNMP WEB architecture, Nginx is a high performance WEB server and cannot process PHP itself. When receiving HTTP Request requests from client browsers, Nginx server responds to and processes WEB requests. Static resource CSS, pictures, videos, TXT and other static file req ...

Article catalog preface Introducing pagehelper dependency application.yml Medium configuration Add interface Test paging query interface Problem summary application.yml Configuration of pagehelper in preface If you use mybatis to write paging query, it's troublesome. You need to write the select ...

@Configuration configure spring and start the spring container @Configuration is used to define the configuration class, which is labeled on the class, which is equivalent to < beans > in the xml configuration file of spring. Its function is to configure the spring container (application context) Example description: Configuration class @ ...

Chapter 5 of "Introduction to Flask": learning Flask Sqlalchemy is enough. Don't write too many According to my personal understanding, database is a tool to store data and the direct relationship between data and data. No matter the complexity or size of the data it stores, it has no ess ...

1, Why open slow query Most of the reasons for the poor query performance are the large amount of data. To start the slow query of mysql and record the SQL statements that take a long time to query in the log is conducive to our better position and optimization. 2, Several common reasons for the ...

Add Dependency <!--Add to mysql and mybatis rely on--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <a ...