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Problems encountered: Mysql version mysql Ver 8.0.28-0ubuntu0.20.04.3 for Linux on x86_64 ((Ubuntu)) The following are the errors that I will report after uninstalling and installing mysql several times. No matter how to change the configuration file according to the online tutorial, I will eventually report that the local link is rejected. My ...

Streaming media Windows is the core of handling infinite streams. Windows divides streams into "buckets" of limited size, on which we can apply calculations. This document focuses on how to perform windowing in Flink SQL and how programmers can get the most from the functions they provide. Apache Flink provides several window table ...

Introduction: This article introduces the three most commonly used basic operations of Docker image: login, pull and push, as well as how to log in to a sub account. By understanding the basic operation of mirroring, you can use the container mirroring service ACR more skillfully. For image download, domain name resolution and time synchron ...

brief introduction Awk is an excellent text processing tool and one of the most powerful data processing engines in Linux and Unix environments. The greatest function of this programming and data manipulation language (whose name comes from the initials of the surnames of its founders Alfred aihou, Peter Weinberg and Brian collinhan) depends o ...

Summary of Linux polkit rights raising As soon as I was about to take my annual leave, I received a regulatory vulnerability alert - "pkexec program in Linux Polkit has a privilege escalation vulnerability (vulnerability number: CVE-2021-4034). Pkexec application is a pre installed tool for Linux system, and the vulnerability affects main ...

dpkg, package manager for Debian, is a major package management tool in Debian and Debian based systems. It can be used to install, build, uninstall and manage deb format software packages. Install software When installing software with the dpkg command, you can use the - i option and specify the path of the deb installation packa ...

2022-01-17 Copyright notice: original articles cannot be reproduced without the permission of the blogger At the beginning of 3A5000, Godson turned to loongarch. Although the new architecture got rid of the historical burden, it also takes some time to accumulate ecology. In more than half a year, loongnix20 loongarch64 has made rapid progres ...

1. Scanning and packet capturing analysis 1.1 problems This case requires to be familiar with common security tools in Linux host environment and complete the following tasks: Use nmap scan to obtain information about the specified host / network segmentScript scanning using nmapAnalysis of plaintext exchange information in FTP access ...

The virtual file system is VFS, and the kernel provides file and file related interfaces. All files in the system not only depend on VFS coexistence, but also rely on VFS coordination. Common file interfaces, including read, write and open, can be used to read files and hard disks. The reason why a unified interface can be used to read an ...

Author: Ge Ermeng I openGauss standalone installation Hardware and software environment: Hardware environment: virtual machine memory 8GB, 4-core CPU, 900G disk (not required) < o: P > < / O: P > Software environment: centos7 6<o:p></o:p> Database version: opengauss2.0 0 Enterprise Edition: opengauss-2.0 0-CentOS-64bit- ...