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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11221

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17566

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 11276

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

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Detailed explanation of solrcloud (jetty container) construction and usage examples

Course Introduction：1. Preparation 1. System and software version System version: centos6.4, zookeeper version: zookeeper-3.4.8, solr version: solr-5.5.3 2. Install 3 virtual machines Virtual machine IP 192.168.17.142, 192.168. 17.143, 192.168.17.144 3. Install jdk on each machine

2017-06-27 comment 0 2353

How to build a node.js development environment on Linux virtual machine

Course Introduction：1. Install the Linux system (you can skip this step if you have already installed Linux). Recommended virtual machine options: virtualbox or vmware (Professional version permanent activation code: 5a02h-au243-tzj49-gtc7k-3c61n) I use vmware here. After installing vmware, click New Virtual Machine, choose to install the operating system later, and then configure it. The virtual machine settings are as follows: { Guest operating system: other; Version: other 64-bit; Virtual machine name: node.js; Location: d:\vm\node.js; Other default;} The virtual machine is built and configured as the picture shows. There is a question here

2023-05-28 comment 0 1935

Can I install a virtual machine in Windows 10 Home Edition?

Course Introduction：A virtual machine is a technical tool that most users often use. To put it simply, you download a virtual machine on your computer, and then download the Windows operating system or other systems inside the virtual machine. It is very convenient. Here we mainly introduce the VMware virtual machine. The installation tutorial is mainly based on. Can win10 home version install a virtual machine? Answer: win10 home version can install a virtual machine. Tutorial for installing a virtual machine in Win10 Home Edition 1. Win10 Home Edition comes with virtual machine Hyper-V (click to view) 2. VMware 1. First, click on VMware’s official website to download the virtual machine. (Win10 home version or above needs to install version 15.5 or above) 2. After the download and installation is completed, find the following

2024-01-12 comment 0 2133

Win11 virtual machine activation tutorial revealed!

Course Introduction：Hello everyone, today I want to reveal the secret of Win11 virtual machine activation method! Have you ever encountered the problem of being unable to activate on a Win11 virtual machine? Don't worry, this article will introduce you to the method of activating Win11 virtual machine in detail, and intersperse cases to increase your convincingness. I believe that after reading this article, you will be able to activate the Win11 virtual machine easily! Tools and raw materials: In this article, we will use the following tools and raw materials: Computer brand model: Dell Suitable virtual machine software. in the text,

2024-05-07 comment 0 1007

Can amd use a virtual machine to install mac (amd virtual machine support)

Course Introduction：Introduction: In this article, this website will introduce to you the relevant content about AMD being able to use a virtual machine to install a Mac. I hope it will be helpful to you, let's take a look. When the virtual machine is installed, the Mac is stuck on the gray apple, and there is no Hot Wheels rotation. Insufficient memory is one of the main reasons for the system to freeze. You can try downloading a CPU testing tool to confirm. In addition, using 360 Security Guard is also a good choice. According to the information you provided, your system is 32-bit and has a memory capacity of 4GB. The actual available memory is only about 2GB. This is due to the memory limit of 32-bit systems. First install the Apple virtual machine in VMware and use the unlocker tool to add the Apple virtual machine option. Then, adjust the installation settings of the virtual machine to support ma

2024-02-08 comment 0 1344

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