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I. data preparation First, define the data table. The input statement is as follows. CREATE TABLE fruits ( f_id char(10) NOT NULL, s_id INT NOT NULL, f_name char(255) NOT NULL, f_price decimal(8,2) NOT NULL, PRIMARY KEY(f_id) ); Insert the fo ...

This is a detailed description of python connecting to the database. If you continue to use python to connect to the database, please see this template article python3 connection MySQL database template We need to install pymysql when python3 is connected to MySQL database pip install pymysql After ins ...

*mysql partI used the db1 database and built two tablesPhone meter -------- store phone informationuser table store account password*python section 1. Connect to the database (connection() function) #Get connection def connection(sql,para): coon=pymysql.connect(host='localhost', ...

There are many online installation tutorials, which are basically the same and the same. During the installation process, the installation may fail due to small details. I also refer to many installation tutorials to install successfully. During the installation process, there will be a variety of probl ...

k8s storage: (persistent) docker containers have a lifecycle.volume 1. Storage class is a kind of k8s resource type. It is a logical group created by administrators to manage PV more easily. It can be classified according to the performance of storage system, or comprehensive service quality, backup strategy, etc. But k8s itself doesn't know w ...

Catalog 1 Ambari + HDP offline installation 1.1 INTRODUCTION 1.1.1 introduction to ambari 1.1.2 HDP 1.1.3 HDP-UTILS 1.2 address of ambari official website 1.3 Ambari and HDP Downloads 1.4 system requirements 1.4.1 software requirements 1.5 modify the maximum number of open files 1.6 cluster node plann ...

1> Installation of mariadb under. Linux 1.Find and mariadb Relevant security subcontracting version yum search mariadb 2.install mariadb Customer and service packages for yum install mariadb mariadb-server.x86_64 -y 3.start-up mariadb service systemctl start mariadb systemctl enable mariadb 4.maria ...

The lnmp architecture is often heard at work, so what exactly is it? lnmp is the mainstream WEB architecture of Internet companies. In lnmp l is a linux operating system Nginx is a nginx for Publishing Web sites (for static web pages, disconnected databases (html)) nginx is a high performance HTTP and r ...

brief introduction 1. The process of installing and deploying ansible is very simple and the learning curve is flat.2. There is no need to install the client separately. Knowledge can be leveraged using existing SSHD services (protocols).3. Based on Python development, it combines the advantages of many operation and maintenance tools (puppet, ...

Author: Throwable Blog Park: https://www.cnblogs.com/throwable/p/12266806.html premise Distributed transaction is a difficult problem in micro-service practice. In the micro-service practice schemes implemented by the author, all of them adopt compromise or avoid strong consistency.Referring to the local message table scheme proposed by Ebay ...