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Technical Articles

Operation and Maintenance

Create SSH password-free login

Enter the text below and ignore the ssh installation scp installation process. By default, the current machine and the remote machine are considered to have complete ssh. The scp function first uses the ssh-keygen-trsa command in machine B (you should know this if you want to play git~) [hart02@hart02.ssh]$ssh-keygen-trsaEnterfileinwhichtosavethekey (/home/hart02/.ssh/id_rsa) Press the enter key directly Enterpassphrase (emptyfornopassphrase): It means please enter the password. If you do not enter it, there is no password. when

Mar 06, 2024 am 10:04 AM

linux linux系统红帽 linux命令 linux认证红帽linux linux教程 linux视频

How to install and enable PHP Opcache on CentOS

How to install and enable PHPOpcache on CentOS PHPOpcache is an extension module for PHP that can improve the performance of PHP applications and reduce the load on the server. Installing and enabling PHPOpcache on CentOS is very simple, and the specific steps and code examples are detailed below. Step 1: Install the PHPOpcache extension. Use SSH to connect to the CentOS server and log in as the root user. Install PH using the following command

Mar 06, 2024 am 08:36 AM

安装启用 opcache

Microsoft integrated development environment Visual Studio 2022 17.5 officially released

Recently, Microsoft's integrated development environment Visual Studio 202217.5 has been officially released, and the versions suitable for Windows and macOS platforms are available for download. This update is designed to improve developer productivity, performance, and collaboration across different platforms and languages. Visual Studio 202217.5 brings a series of new features and improvements designed to enhance developer productivity, performance and collaboration across platforms and languages. The new version of Visual Studio 202217.5 includes the following highlights worth noting: All-in-one search: Visual Studio 202217.5 introduces a new All-in-one search experience that allows

Mar 05, 2024 pm 08:00 PM

微软集成开发环境

How to solve the problem of slow execution speed of ansible

After receiving feedback from the project, the customer encountered difficulties when deploying the product using the tools we provided, and encountered problems in the host addition step, which prevented the implementation team from continuing to advance the work, so they asked us for help. Environment information: kylin10 architecture: arm has begun to take shape. During the system deployment process, for batch operations of hosts, we used ansible scripts during development. Recently, I encountered a problem with the execution process being stuck. It was initially suspected that ansible was blocked during execution. To verify this, I have sent a command to the field for testing. localhost$date2024-02-19 Sunday 17:30:41CSTlocalhost$ansibleall-i

Mar 05, 2024 pm 05:34 PM

ansible become

How to set the display status icon in Xshell - How to set the display status icon in Xshell

The article brought to you in this issue is about the Xshell software. Do you know how to set the display status icon in Xshell? Below, the editor will bring you the method of setting the display status icon in Xshell. Interested users can take a look below. Bar. First, open the Xshell software, open the session window, then, select the tab menu and finally, check Show status icons, and that's it. Have you learned it?

Mar 05, 2024 pm 12:40 PM

设置 xshell

How to configure the graphical interface in Xshell - How to configure the graphical interface in Xshell

The article brought to you in this chapter is about the Xshell software. Do you know how to configure the graphical interface of Xshell? Below, the editor will bring you the method of configuring the graphical interface of Xshell. Let us take a look below. Open an xshell terminal and connect to File >> Attribute Tunnel >> Forward X11 to connect to. Then directly enter the command that can call the graphical interface in the xshell terminal. virt-manager will automatically pop up the graphical interface, which is equivalent to a VNC graphical interface.

Mar 05, 2024 am 11:00 AM

配置 xshell

How Redis Desktop Manager connects to the database server-How Redis Desktop Manager connects to the database server

Many people are using the RedisDesktopManager software, but do you know how RedisDesktopManager connects to the database server? Next, the editor will bring you the method of RedisDesktopManager connecting to the database server. Interested users can take a look below. 1. Open the software 2. Click connecttoredisserver at the bottom 3. In the pop-up connection window, view the tab 4. Find the SSHTunnel tab and enter the ip port number and user name and password (or the file path of the private key). This step requires redis to be installed and configured on the server or red installed and configured locally.

Mar 04, 2024 pm 10:58 PM

编程 redis

Disable USB storage in linux

To protect data from leaks, we use software and hardware firewalls to restrict unauthorized access from the outside, but data breaches can also occur internally. To eliminate this possibility, organizations restrict and monitor access to the Internet and disable USB storage devices. In this tutorial, we will discuss three different methods to disable USB storage devices on Linux machines. All three methods are tested on CentOS6 & 7 machines. So let us discuss these three methods one by one. (Also read:UltimateguidetosecuringSSHsessions[1]) Method 1 – Pseudo installation In this method, we add a line installusb-stor to the configuration file

Mar 04, 2024 pm 05:50 PM

linux linux系统红帽 linux命令 linux认证红帽linux linux教程 linux视频

How to quickly copy and paste in Xshell-How to quickly copy and paste in Xshell

Many users have just come into contact with the Xshell software and are not familiar with how to quickly copy and paste in Xshell? The following article brings you how to quickly copy and paste in Xshell. Let us take a look below. Use commonly used copy and paste commands. Ctrl+C and Ctrl+V do not work in Xshell. After checking, it is found that the default copy and paste commands in Xshell are different. As follows, using the default copy and paste command of Xshell, you can copy and paste information, but it is not as good as The speed and convenience of commonly used copy and paste commands are set to quickly copy information: Tools-Options-Keyboard and Mouse, check [Automatically copy selected text to the pasteboard], and confirm the setting to quickly paste information: Tools-Options-Keyboard and Mouse- press right

Mar 04, 2024 pm 02:30 PM

复制粘贴 xshell

How to quickly determine the number of telnet processes in Linux?

In the Linux operating system, Telnet is a protocol used for remote login to other computers. The Telnet tool is usually used for remote login. Sometimes we may need to quickly determine the number of Telnet processes on the current system for performance monitoring or troubleshooting. The following will introduce a method to quickly determine the number of Telnet processes in Linux through the command line, and attach specific code examples. Steps: Open the terminal and enter the following command to view all Telnet processes in the current system

Mar 02, 2024 am 09:33 AM

linux 进程 telnet linux操作系统

Steps to modify the MySQL host name

Modifying the MySQL host name means changing the host name of the MySQL database server from the original value to the new value. This process requires a series of steps, including modifying the MySQL configuration file and restarting the MySQL service. The following will introduce the steps to modify the MySQL host name in detail and provide specific code examples. Step 1: Back up data. Before modifying the MySQL host name, be sure to back up important data in the database to prevent data loss due to unexpected situations. Step 2: Log in to MyS

Mar 01, 2024 pm 09:24 PM

连接mysql 修改主机名称数据丢失

Install SSH on the Linux Debian11 server, create a new user and allow SSH remote login, and configure SSH secure login!

The steps to install SSH on your Debian11 server and create a new user to allow SSH remote login are as follows: Step 1: Install SSH In order to install the SSH server, you need to log in to your Debian11 server as the root user or a user with sudo privileges. Execute the following command in the terminal to install the SSH server: sudoaptupdatesudoaptinstallopenssh-server Step 2: Create a new user To create a new user, you can use the adduser command. Replace the following command with your desired username: sudoaddusernew_username You will be prompted to set the new user's password and other

Mar 01, 2024 pm 07:16 PM

登陆 ssh sudo

What to do if the website access prompts 'internal server error'

Solution: 1. Reload the page; 2. Clear cache and cookies; 3. Check the URL and links; 4. Try other browsers; 5. Check the server configuration; 6. Contact the website administrator; 7. Wait for a while and try again. etc.

Mar 01, 2024 am 09:43 AM

网站访问 internal server error 系统恢复

Linux Getting Started Guide: Master the basics easily and start your happy journey!

Written in front Hi, dear readers! There may be no surprises in today’s article, and it may be slightly disappointing to some friends who are hungry for practical information. Don’t be discouraged, there will be more useful information tomorrow! Let's have a good time reviewing the basics of Linux today to bring you some light appetizers. By the way, I have been working in the IT industry for many years, and I have always been a little nervous and low-key about the big mystery of Linux. There was a time when I actually refused to come into contact with Linux. why? Because I think, we have visual tools like Jenkins that can handle everything from development to deployment, so why bother to memorize a bunch of command lines? What's more, I still have to look around for ways to crack the ssh tool. There is this

Feb 29, 2024 pm 10:52 PM

linux 命令性干货 linux操作系统 shell脚本