A developer-turned DevOps engineer
The previous post talked about the “identification” variables — how a pipeline knows “who it is, where it is, and which commit it came from”. This post is about the “orchestrati...
Every time a pipeline runs, GitLab automatically injects a pile of “built-in variables” (officially called Predefined Variables). You don’t need to configure them; they work out...
When an Agent calls an external tool, there are two broad paths: MCP and the CLI. MCP (Model Context Protocol) is a standardized protocol Anthropic introduced at the end of 2024...
Last time we talked about Tools — the “hands and feet” an Agent uses to operate on the outside world. Once it has hands and feet, the next question follows: how should the Agent...
However clever a large model is, if it cannot interact with the outside world it is just a talking head. Chatting, writing a poem, fixing a function for you — all of that is sti...
If you’re using Hermes Agent, chances are you’ve only ever used its file memory — MEMORY.md, USER.md, SKILL.md. That alone is already quite useful: tell it your preferences and ...
You’ve raised an Agent well inside Hermes — it remembers your code style, your project structure, your frequently used commands. Now you have a second need: an Agent dedicated t...
When you start using large models for real work — not the occasional API call for fun, but treating them as team infrastructure — you soon hit a wall. Not the “the models aren’t...
When we talked about OpenClaw last time, I mentioned that its biggest weakness is its memory system — you have to teach the Agent all over again every time, and it can’t remembe...
The previous three articles all covered agents in the programming domain — OpenCode writes code, Cline executes tasks inside the IDE, and OpenHands autonomously completes the wh...
In 2024, an AI tool called Devin burst onto the scene, claiming to be the “first AI software engineer”, capable of autonomously handling the whole flow from requirements to depl...
Last time we talked about OpenCode in the terminal, but for many developers the center of gravity of daily work is in the IDE. The VS Code sidebar, inline completion, the file t...
In the previous article we set up our AI infrastructure on the intranet — Ollama running the models, vLLM improving performance, Open WebUI providing the interface. With that fo...
When the company you work for can’t use public-cloud LLMs because of data compliance rules, security policy or network isolation, does that mean AI capability stops there? The a...
A user reports: “I submitted my order three times, and every time it spun for 10 seconds and then told me it had failed.” You open the logs and find that the order service threw...
Three in the morning, your phone rings. Half asleep, you pick it up and look — “CPU usage above 80%”. You open the monitoring dashboard for a quick look; the business is complet...
Have you ever stared at a dashboard for five minutes, finally concluded “seems like… not a big deal?”, and then closed it? If so, your metrics monitoring may be suffering from “...
Something went wrong in production. What’s your first reaction? I believe the answer for the vast majority of developers is: look at the logs. But reality is usually this — the ...
Have you ever run into this situation: a user reports that “the system is really slow”, you open up the server and look at CPU and memory, and everything is normal. Then you’re ...
1. AI Has an “Amnesia” Problem Have you ever had this experience: you’re chatting with an AI, the code is flowing nicely, and then suddenly it starts talking nonsense — using a...
1. A Driver Who Gets You There Smoothly Is Not a Driver You Can Rely On Imagine you’re sitting in a taxi. The driver is fast and steady, and you spend the whole ride looking at...
1. A Universal Mental Model If you can only remember one technique from Vibe Coding, remember this one: treat the AI as a new intern. Think about it — what is an intern who ju...
1. Two Ways of “Cooking” Imagine you want to cook a meal. The traditional way: you walk into the kitchen yourself, wash the vegetables, chop them, control the heat, season the...
We’ve reached the last article in the series, and I want to raise a slightly personal topic: what’s the essential difference between a tasteful developer doing DevOps and tradit...
There’s no shortage of discussion out there about the skills a DevOps engineer needs, but go and read those articles and most of them just list the tools you ought to learn: Jen...
If the earlier articles were about “the way”, this one starts on “the craft”. Not, though, teaching you how to configure Jenkins or how to write a Dockerfile — there are already...
In the previous article we went through every link in the DevOps loop. The loop covers the complete lifecycle of a piece of software from idea to launch — and how many links tha...
In the previous article we talked about the cultural foundations of DevOps. Today let’s look at one of the most central concepts: the DevOps loop. If you ask me “what is DevOps ...
After all these years doing DevOps, I’ve noticed a rather interesting phenomenon: when many teams introduce DevOps, the first thing they do is set up Jenkins, containerise every...
1. A Strange Question Have you ever thought about this question: How does AI know that “apple” and “fruit” mean similar things? Of course it knows, because AI has “seen” thes...
1. The Same Question, Different Answers Have you noticed that if you ask AI the same question several times, the answers you get may be different? Sometimes AI answers very “c...
1. “Amnesia” in Long Conversations Have you ever run into this? After chatting with an AI for quite a while, you bring up some detail from the beginning, and the AI can’t seem...
1. Token? Not Just a “Word” If you have used ChatGPT or another large language model, you have certainly come across the phrase “billed by Token”. How much do 1K tokens cost, h...
1. Starting from the Matter of “Speaking” Have you ever thought about it: most of what humans say every day is, in fact, predictable? “The weather today is really—” Most peopl...
1. Why Use Shortcuts In the daily work of managing requirements in Jira, a lot of time goes into creating Issues, editing fields, switching views, and searching and filtering. ...
1. When There Are Too Many Issues to Find A busy project easily accumulates several hundred Issues, or even a thousand. At that point, hunting for an Issue by eyeballing the bo...
1. From Workflow to Board The previous article introduced Jira’s workflow, which defines the rules for how an Issue’s status transitions. A board, by contrast, is the vehicle t...
1. The Issue Is the Heart of Jira The previous article introduced Jira’s core concepts, among which the Issue is Jira’s most basic unit. If a Project is the container, the Issu...
1. DevOps Starts With Requirements The DevOps lifecycle is usually described as: plan → code → build → test → release → deploy → operate → monitor, and then feed back around th...
1. What AssetBundle Unpacking Is An AssetBundle is Unity’s asset packaging format: a game’s models, textures, audio and other assets are all packed into it. Unpacking means ext...
1. Background Accessing GitHub from inside the country is often flaky — sometimes it opens and sometimes it doesn’t, git clone and git push time out and fail, or pages load ext...
1. From Vanilla JS to Modern Frontend Back in university I had already taught myself HTML5, CSS3 and JavaScript, and I hand-coded a blog system for writing my personal blog, in...
Civilization and Strength There is a misconception: that the advanced must eliminate the backward, and that civilization must replace the thug. The truth is that the advanced ...
The previous three articles covered Nexus, Harbor, and JFrog Artifactory respectively. You may have noticed that the overlap among the three isn’t all that large — each has its ...
If Nexus is “a private registry that’s good enough” and Harbor is “a professional container image registry”, then JFrog Artifactory is “the enterprise-grade platform that wants ...
If you’re using Docker and Kubernetes, you definitely need a reliable image registry. Docker Hub is slow and has pull rate limits, so it isn’t suitable as infrastructure for a p...
When it comes to artifact repositories, the first thing a Java developer thinks of is almost always Nexus. That’s no surprise — from proxy caching of Maven Central, to hosting a...
Imagine a scenario: you take over a project that has been running for three years, and now you need to upgrade one of its dependencies. You want to know “what impact will upgrad...
Have you ever been in this situation: a bug shows up in production, you need to roll back to the last stable version, and you discover that the most recent version number is 1.0...
Many teams do DevOps: the pipeline is built, K8s is up, monitoring is configured — but when it comes to “release,” their first reaction is “create a Git tag and then deploy to p...
An application is up and running in a container, but “the process is running” and “the service is available” are two different things. The process may be stuck in an infinite lo...
If you deploy even a slightly complex application (say a microservice + MySQL + Redis + Nginx), you’ll end up with so many YAML files you start doubting the meaning of life. And...
Containers are disposable — use them and throw them away — but data is not. If you run MySQL directly inside a container, the data is gone the moment the container is deleted, w...
Networking is the most complex and most easily overlooked part of K8s. How do Pods communicate with each other? How exactly does that virtual IP of a Service work? What is kube-...
Now that you understand K8s’s architecture, it’s time to get to know the most core API objects in K8s: Pod, Deployment and Service, plus ConfigMap and Secret, which manage confi...
Kubernetes is called the “king of container orchestration”, but with over a million lines of code and a pile of components, it’s easy to get lost the first time you come across ...
The image has been built — now where do you put it? Push it straight to Docker Hub? If you do DevOps at a company, the answer is almost certainly no. Company code, and especiall...
Being able to write a Dockerfile and writing a good Dockerfile are two different things. A bad Dockerfile can turn your image from 100MB into 1GB, while an excellent one makes y...
Docker is the first step in cloud-native deployment. Plenty of people can use docker run, but not everyone is clear on what happens behind it. What exactly is the difference bet...
Have you ever wondered why deploying an application took several days ten years ago, while today it can go live in minutes? The containers, Kubernetes and cloud native we take f...
1. Have You Seen This Scene Before? When you play certain Unreal games, you have definitely been through this: You finish the update and excitedly double-click the icon. Then ...
1. Cook Is Done, Now What? In the previous article we finished going through Cook — Unreal cooked the “raw assets” in the editor into “finished products” usable on the target p...
1. Where Did the Name “Cook” Come From? In Unreal’s build process, “Cook” is a concept you can’t get around. At first I was puzzled — why call it “Cook”? Was Unreal comparing ...
1. Two Unfamiliar Acronyms In the previous five articles we talked about Unity’s build system. From the eight stages behind the Build button, to the three-generation evolution ...
1. Why Does C# Need “Translation”? C# is a managed language. When you compile the C# code you write, what you get isn’t machine code but IL (Intermediate Language). At runtime ...
1. From SBP to Addressables: Two Different Upgrade Paths In the previous two articles we talked about the evolution of the underlying AssetBundle interface: Generation 0 (manua...
1. The Thing That Halves Your Build Time Last time we went through the evolution of the AssetBundle interface across two generations — from generation 0, where you hand-wrote c...
1. The Days Without AssetBundle Before we get into how the AssetBundle interface evolved, imagine this for a moment: if Unity had no dynamic asset loading mechanism, how would ...
1. A Confusion Set Off by One Button When I first got into Unity builds, my mindset was like this: I’d spent ten years doing Java development before this, and a build was just...
1. A New Industry, and a New Understanding of “Build” Last year I changed jobs. I moved from the internet industry to the game industry. My development language went from Java...
The previous four posts covered the technical details and integration approaches for three channels: email, SMS, and instant messaging. Now that the mechanics (术) are in place, ...
In real DevOps work, instant messaging tools (IM) are the most commonly used notification channel. Did the build succeed, is the deployment finished, which stage has the Pipelin...
SMS is the “heaviest” of all the notification channels — expensive, low in information density, and easy to abuse. But it has one irreplaceable advantage: forced delivery. When ...
With instant messaging tools flying everywhere these days, talking about email notifications can feel a little “outdated”. But the reality is this — email is still the most basi...
Have you ever run into this? The CI pipeline has been down for half an hour and nobody noticed, until a tester comes over to ask “why isn’t the package out yet?” Production brea...
1. A Story First There was a person who wanted to cook a bowl of noodles. The first time, he boiled water, chopped the vegetables, cooked the noodles and mixed the sauce. E...
1. Isn’t CMake Good Enough? We’ve already spent five articles learning CMake — from getting started to modern idioms, from multi-directory organization to cross-compilation. Fo...
1. Isn’t make Fast Enough? After a few years of using make, have you ever noticed this phenomenon: make -j8 You have 8 parallel jobs running, the CPU is saturated, and yet m...
1. You Will Run Into This Need One day you may find yourself in a scenario like this: You want to run a program on a Raspberry Pi (ARM architecture), but the Pi is too weak...
1. What do you do when the project grows up? In the earlier articles, everything we wrote was a single-file or single-directory project — all the code in one place, handled by ...
1. A Warning If you search for how to use CMake, you will very likely find code like this: include_directories(${PROJECT_SOURCE_DIR}/include) link_libraries(curl ssl crypto) a...
1. From Makefile to CMake: Why Learn Yet Another Tool? In the previous articles we’ve been talking about the Makefile the whole time. Is it good enough? If your project is onl...
1. A maddening scenario Suppose you want to write a program that makes HTTP requests using libcurl. You know how to write the code: #include <curl/curl.h> // send reques...
1. It Starts with an Awkward Experience You’ve surely run into a scene like this: A colleague hands you a compiled program, you double-click it full of excitement — and up pop...
1. A Seemingly Simple Question Every day you type gcc -o hello hello.c, press enter, and get an executable file. It all seems perfectly natural. But if you open that executabl...
1. How Did You First Compile a C Program? Think back: what was the situation when you wrote your first C program? // hello.c #include <stdio.h> int main() { printf("...
1. A More Radical Philosophy The three models introduced earlier all allow feature branches to exist for some length of time. But one camp argues: the longer a branch exists, t...
1. Git Flow Is Too Heavy, GitHub Flow Is Too Light The previous two articles introduced Git Flow and GitHub Flow respectively. The former has rigorous but cumbersome rules; the...
1. Why a Lighter Model Is Needed The previous article introduced Git Flow. Rigorous as it is, the process is cumbersome. For a project like a web application that needs fast it...
1. What Is a Branching Model In team collaboration, code management is inseparable from branches. But how branches are created, how they are merged, and when a release goes out...
As projects grow larger, Gradle build times can get longer and longer. Mastering incremental builds and the caching mechanisms can significantly speed up day-to-day development.
Gradle plugins can encapsulate build logic and be reused across multiple projects. There are three ways to create a plugin, each suited to different situations.
Gradle Wrapper is the execution method officially recommended by Gradle; it ensures that everyone on the team uses the same version of Gradle, avoiding the “it runs on my machin...
Large projects are usually split into multiple modules. Gradle’s multi-module support is very flexible; this article introduces the basic configuration and common practices.
A Task is the basic unit of a Gradle build; understanding how tasks are created, configured and executed is the key to mastering Gradle.
settings.xml is Maven’s global configuration file; it controls repository addresses, authentication information, mirrors and so on. Understanding it matters a great deal for tea...
Development, test and production environments often need different configurations (database addresses, log levels, and so on). Maven’s Profile mechanism was designed to solve ex...
Maven gets its functionality from plugins, so getting to know the common ones is required study for anyone who wants to use Maven efficiently.
Maven’s dependency management mechanism is very powerful, but scope, transitive dependencies and dependency conflicts often confuse people too.
Maven organises the build process around lifecycles, and understanding the lifecycle is the key to mastering Maven.
Ant’s XML syntax struggles when it has to handle complex logic. Fortunately, Ant supports an inline <script> tag, so you can write custom logic in Groovy or JavaScript.
Ant can invoke external programs through tasks such as <exec>, <java> and <apply>, making up for the limited expressive power of XML.
Ant has no if/else like a programming language, but it does provide the if/unless attributes and the <condition> task for conditional logic.
Ant provides a rich set of file operation tasks; they are among the most frequently used features in build scripts.
Ant build scripts often need to configure variable parameters (such as server addresses and version numbers); managing them through a property file is good practice.
1. Telling the several kinds of “revert” apart When you use SVN, “reverting” can mean different things: Scenario Description Undoing...
1. When do conflicts arise SVN conflicts happen in the following situations: Conflict on update: you modified a file, a colleague also modified the same line of the same fi...
1. The nature of an SVN branch An SVN branch is fundamentally different from a Git branch. In SVN, a branch is essentially a copy of a directory in the repository. When you cre...
1. The problem scenario One day you find a bug but don’t know which commit introduced it. The repository has hundreds of commits, and checking them one by one with checkout is ...
1. Rebase vs Merge In Git there are two ways to integrate the changes from two branches: merge and rebase. Merge creates a new “merge commit” and keeps the complete branch his...
1. What is git stash In day-to-day development, you often run into this situation: you are developing a new feature on one branch, half-way through the code, when suddenly you ...
Besides developing bk-ci plugins, our build team is also responsible for monitoring how the packaging pipelines and quality-check pipelines of every project on the build platfor...
Gradle is a very flexible and powerful build system, but its concepts are also relatively complex. Still, as long as you grasp the core and make the distinctions clear, you won’...
When the expires in the cookie returned by the requested URL has the following format, Expires=Mon, 26 Apr 2021 14:34:27 GMT The error is: Invalid 'expires' attribute: Mon, ...
Automated Deployment, the Last Step of CI/CD The complete CI/CD chain is: commit code → automatic build → automatic test → automatic deployment. The first three steps are CI; t...
Why not open the editor? Because the build machine’s GPU is too poor, it won’t open… Here is a way to edit the UE4 config file directly. In BaseEngine.ini, just set the follo...
When I used the apktool tool to sign an APK, I hit a sun/misc/BASE64Encoder error. The reason is that this class only exists in versions before jdk1.8; from jdk9 onwards it no ...
Installing a Linux distribution in Windows 10 WSL2 gives the error WslRegisterDistribution failed with error: 0x800701bc This error is caused by not downloading and installing ...
The path for 共享组件、工具和SDK cannot be changed. You can fix this by deleting the registry key. The registry path is: 计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\Setup J...
Question 1: What If the Workflow Doesn’t Trigger? This is the confusion beginners run into most often with GitHub Actions — you clearly pushed your code, yet the Workflow never...
Unlike Ant, which has only build.xml, and Maven, which has only pom.xml, a project that uses gradle generally has the following files: gradlew gradlew.bat build.gradle gradle....
kotlin is a programming language based on the JVM, similar to Java and interoperable with Java; kotlin-plugin is the IDE (integrated development environment) support plugin...
In Gradle, if you declare a dependency without specifying a version, it will fail with an error saying the dependency cannot be found. But if you have a lot of dependencies, you...
GitHub Actions — Actions Are Workflows GitHub Actions is the CI/CD and automation platform GitHub launched in 2019. Like Gitlab CI, it belongs to the “repository-native CI” sch...
Download link (LTS version): Download .NET 6.0 (Linux, macOS, and Windows) .NET Runtime Contains only the components needed to run console apps. You need to install the ASP.NE...
Using the execjs library; install it with: pip install PyExecJS How to use it:
Bot example: https://github.com/lich0821/WeChatRobot/ Library: https://pypi.org/project/wcferry/
Use the cd variable. Example: echo %cd%
Variables — the Pipeline’s “Soul Parameters” If .gitlab-ci.yml is the skeleton of a pipeline, then variables are the blood flowing through that skeleton. Without variables, a ...
Question 1: What Do I Do When the Pipeline Is Stuck in pending? This is the problem beginners run into most easily. The Pipeline has been created, but it keeps showing pending ...
Just create an empty file named .gitkeep in the empty folder. (Actually any file will do — this is just a conventional way of doing it, and it won’t be treated as a project file)
The download page for the international version of Unity often fails to open, and Unity Hub is currently bound to the Unity China version. You can copy the links below straight ...
Two ways to do it.
Gitlab CI, born in Gitlab, used for Gitlab Gitlab CI is the continuous integration / continuous delivery system built into Gitlab. You do not need to set up an extra CI server:...
You can use the uncompyle6 tool. You can install it directly with pip: pip install uncompyle6 The decompile command (two forms): uncompyle6 xxx.pyc > xxx.py uncompyle6 -o...
Gradle using a daemon is like a warm start and can save build time. But in a continuous integration environment, to keep the environment consistent or to avoid daemon process co...
VisualSVN for Visual Studio VisualSVN is a professional-grade Subversion integration plugin for Visual Studio. The main advantages of VisualSVN are: Unmatched reliability: Vi...
Use the Ctrl+R shortcut to open “Run”, then type regedit to open the registry Find \HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run ...
Follow these steps: Use Visual Studio Code to open C:\Program Files\NVIDIA Corporation\NVIDIA GeForce Experience\www\app.js Replace the text. Turn on regex matchin...
You can skip the certificate check by adding the --no-check-certificate parameter. For example, the command that reports the error: wget https://dlcdn.apache.org/maven/maven-3/...
A directional pad (D-pad, short for directional pad) is a set of buttons arranged in an arrow or cross design that provides commands in four directions - up, down, left and righ...
Temporarily disable Run the command setenforce 0 to temporarily disable SELinux Permanently disable a. Open the selinux config file vi /etc/selinux/config b. Find ...
Check the firewalld status: systemctl status firewalld Temporarily stop firewalld: systemctl stop firewalld Permanently disable firewalld: systemctl disable firewalld
In a command-line window, enter the systeminfo command; one of the items in the output is 系统启动时间.
Download the source code If what you downloaded is a compressed archive, decompress it first, then run Setup.bat (on Windows) This step downloads and installs a great many ...
In the Package Manager, select Add package from git URL, and enter com.unity.ui to install it.
It covers: import, create, build, distribute, load The image above shows the typical workflow for using assets in Unity. Each column represents a separate step, described bel...
Use QuickTime Player to open the target video file In the menu bar, “File” - “Export” - “Audio Only” exports the audio alone.
In Audio Source, set Spatial Blend to 1; In 3D Sound Settings under Audio Source, set Min Distance and Max Distance. Within the minimum distance, the audi...
Open Run (keyboard shortcut Win+R), type gpedit.msc, click OK, and open the Local Group Policy Editor. Open: “Local Computer Policy -> Computer Configuration -> Windo...
Make sure the operating system version number is greater than 14352; The detailed version number of the operating system can be found under “Version” in “Con...
Strictly speaking, Node.js is not a programming language but a runtime, similar to the JVM. Java runs on the JVM, and Javascript runs on Node.js. In a word, Node.js is a JavaS...
When building ABs, add the BuildAssetBundleOptions.DeterministicAssetBundle option. This option ensures the AssetBundle is identified by a unique Hash; without it, the AssetBun...
BuildAssetBundleOption.DisableWriteTypeTree Description Does not include the type information in the AssetBundle.
In Unity > Preferences > External Tools, set External Script Editor to Visual Studio (make sure the Editor Attaching option is checked In Visual Studio, ...
You need to write all the files/folders into a file, one per line, then use the -F option to specify that file. For example: svn ps svn:ignore -F IgnoreFileList.txt .
In an SVN directory, you can check it with the svn info command. In the output, what comes after Revision: is the revision number.
Use propset on a directory to set svn:ignore, which can be abbreviated as ps. Ignore .class files in the current directory: svn propset svn:ignore *.class .
FTP’s passive parameter is used to enable FTP passive mode. So what does FTP passive mode mean, is there also an active mode (there is), and how do they differ? Put simply, in...
The cause is that the Unity project is not associated with the Visual Studio you are using. Just follow the steps below: Open the Unity project Select Edit –> preferenc...
You can refer to the following configuration: server { listen 80; server_name xxx.com www.xxx.com; return 301 https://$host$request_uri; }
Use the COPY command. Basic syntax: COPY [OPTIONS] source destination That is, you just run COPY 源文件路径 目标路径. It is similar to the cp command on Linux. But the Windows COPY c...
In short, log4j2 is an open-source project of the Apache Foundation, used for printing logs in Java programs. Apache Log4j 2 is an upgrade to Log4j; it provides significant impr...
The key is this one line: unable to build chain to self-signed root
In short, armv6, armv7, armv7s, armv8 and arm64 are all instruction sets of ARM processors. So what exactly is an ARM processor then?
An Android App Bundle is a publishing format that contains all of the app’s compiled code and resources, and it hands the generation and signing of APKs over to the app store to...
On Windows you can use the taskkill command to terminate a process.
BOOTCDN: https://www.bootcdn.cn/ BootCDN is a free CDN service for front-end open-source projects jointly supported and maintained by JiTu Cloud (极兔云) and the Bootstrap Chinese...
Put simply, this is a Windows security policy setting that makes the administrator’s administrator rights require approval. You can change this policy by following these steps:...
This happens because the android-28 SDK is missing; just install it. The commonly suggested approach is to install Android Studio and then use the SDK Manager to install the mi...
Enclose the keywords in quotes and separate them with the OR symbol . Sometimes it is natural to reach for |, but | in a shell command also denote...
for /f "tokens=2" %%i in ('svn status') do echo %%i If you are using it in the cmd command-line interface, replace %%I with %i, that is: for /f "tokens=2" %i in ('svn status')...
1. Background While debugging code you may add a lot of files under the current git working directory, and once you have achieved your goal you want to restore the code to its ...
1. Download the public security icon Save it as gongan.png 2. Upload it to the server Location: /var/www/html/static/common/gongan.png 3. Modify the code File to modify: /v...
Install the EPEL repository yum install -y epel-release Install the Remi repository rpm install http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
Configure the Nginx Repository Run the command: vi /etc/yum.repos.d/nginx.repo Add the following content:
Installing MariaDB yum install mariadb-server Setting Up Security mysql_secure_installation Connecting to the Database mysql -u root -p Enter the password you set in the p...
Question 36: What Is the Relationship Between Hudson and Jenkins? Reference answer: both are open-source continuous integration tools written in Java. In fact, Jenkins is a fo...
Once Jenkinsclient is configured, you can operate Jenkins through commands! The command format of jenkinsclient is: jenkins GROUP | COMMAND GROUP refers to a group of command...
Introduction to jenkinsclient Jenkinsclient is a powerful, open-source, cross-platform Jenkins command-line client. It provides a Docker-style command line that lets users oper...
Background Starting a process through Jenkins is a fairly common scenario in real work. But normally, a process started through a Jenkins Job is killed by Jenkins after the bu...
Automation is a revolutionary concept and technology. The First Generation of Automation The first generation of automation is the automation of the heaven-and-earth system — ...
Introduction to Jenkinsclient Jenkinsclient is a powerful, open-source, cross-platform Jenkins command-line client that supports multiple instances. The project is open-sourced...
Introduction to PyPI PyPI is short for ”Python Package Index“, which translates into Chinese as “Python软件包索引”. PyPI is the software repository for the Python language.
A Domestic Mirror for the Jenkins Plugin Center The 1500+ plugins Jenkins has are its most valuable resource and its most distinctive feature. They give Jenkins powerful capabi...
Jenkins gives you two ways to develop pipeline code: scripted and declarative. The scripted pipeline (also known as the “traditional” pipeline) uses Groovy as its domain-specif...
Symptoms With “Enabel Kubernetes” checked in the Docker Preferences to enable K8S, it stays in the starting state and never becomes usable. Cause To enable the Kubernetes fea...
Groovy Syntax Overview This tutorial series introduces the syntax of the Groovy programming language. Groovy’s syntax derives from Java’s syntax, but it is enhanced by specific...
Groovy Syntax Overview This tutorial series introduces the syntax of the Groovy programming language. Groovy’s syntax derives from Java’s syntax, but it is enhanced by specific...
Groovy Syntax Overview This tutorial series introduces the syntax of the Groovy programming language. Groovy’s syntax derives from Java’s syntax, but it enhances it with specif...
Groovy Syntax Overview This tutorial series introduces the syntax of the Groovy programming language. Groovy’s syntax derives from Java’s syntax, but enhances it with specific ...
Groovy Syntax Overview This tutorial series introduces the syntax of the Groovy programming language. Groovy’s syntax derives from Java’s syntax, but it is enhanced with certai...
Overview These are all concepts from the Ruby language. Below I’ll introduce the meaning of each term and compare it with other similar tools, so that readers can understand th...
Groovy Syntax Overview This tutorial series introduces the syntax of the Groovy programming language. Groovy’s syntax derives from Java’s syntax, but it is enhanced through spe...
Origin The blog added a new page, “Reference Manual”, and while deciding on the icons for the menu items I noticed that the theme used Octicons. So I looked into it and did som...
A New Page: “Reference Books” Friends who have read my other articles will know that I’d rather not write a fragmented blog. You can read the details in this article. So I was...
A Few Words to Begin With I’m not really the kind of person who loves writing a blog. When I was in university, my way of studying was to read. Textbooks first; once I’d finis...
The Previous Theme The site previously used the official Merlot theme. Repository address: https://github.com/pages-themes/merlot. On top of that I modified the CSS and adjust...
Where the Problem Came From While using a new theme, I found that in the category dropdown, when a category name was in Chinese, selecting that category left the article list b...
How It Came About Because of the pandemic I didn’t go home for the holiday. Stuck indoors with nothing to do, I took a deeper look at Jenkins and read through some of the Jenki...
Introduction to CJE Certified Jenkins Engineer (CJE) is the official Jenkins skills certification exam launched by CloudBees (the main contributor to the Jenkins open-source pr...
Innocence is lovely; Innocence is terrifying. Reality is beautiful; Reality is cruel.
This article is excerpted from my answer to a question on Zhihu Original Question Title: Why are many “beautiful lies” that everyone knows — for example, “human nature is g...
Chapter 38 of Laozi’s Tao Te Ching contains this passage: 上德不德，是以有德；下德不失德，是以无德 (“the highest virtue does not lose virtue, and that is why it has virtue; the lower virtue does no...
Installing the command-line tools Run the following command in the terminal: xcode-select --install
Over the past couple of days I set up and launched this blog, and started moving over some articles I’d written on my WeChat official account along with various notes I’d writte...
Whatever they do, Chinese people like to be reasonable. “Why aren’t you being reasonable?” is a stock phrase of the Chinese. But here’s the interesting thing: on the very same...
Symptom The original article only configured layout and title, and after publishing it could be accessed using the year/month/day/title link format, but after adding the catego...
This article covers the following topics: HTML5. HTML5 is the latest standard of HTML (HyperText Markup Language). Our example web page is written in HTML5. Later on, i...
Question 31: I have multiple nodes with the same environment, and I want jobs to be automatically assigned to a free node. Is that possible? Reference: You only need to configu...
Jenkins, with nothing of its own, capable of everything Jenkins is, in essence, an automation server. Create a job on Jenkins and configure it, and that job will run automatic...
Question 16: Can a Timeout Be Set in Pipeline Code? Reference answer: yes. As in the following code, this sets a timeout of 1 hour, and it can be set both globally for the pipe...
Question 11: How do I trigger other Jenkins jobs from a Pipeline script? Reference: there is a build step you can look into — it supports both synchronous and asynchronous trig...
Question 6: What is the relationship between Blue Ocean and Jenkins? Reference: to put it plainly, Blue Ocean can be seen as a new UI that Jenkins introduced, with a more moder...
Question 1: How Do Jenkins and Docker Fit Together? Reference answer: combining Jenkins and Docker lets you use containers as Jenkins slave nodes, which has many advantages. Fo...
I was born immortal Fate plays tricks on people Heaven and earth turned upside down Reborn as a demon
Mention programming, and whether you’re outside the field or inside it, people will think of it as a very rational, very complex, very logic-driven thing that has nothing whatev...
In the beginning, a human being is just an animal. To be born, to survive, to return to dust — that is a whole life. There is nothing particularly meaningful about it. It is on...
The previous article sorted out the concept and history of code coverage. Now it’s time to get JaCoCo actually running. From Maven configuration to reading the report, from trou...
You wrote 200 tests, and they’re all green. Confidently, you say “this module is tested.” But then the questions come — how many lines of code did your tests actually run? Which...
In the previous article we learned how to write unit tests with JUnit 5. But reality is about to hit you hard — the Service you wrote depends on a DAO, and the DAO depends on a ...
Now that the concepts are done, it’s time to get hands-on. Since its release in 2017, JUnit 5 has become the de facto standard for Java testing. This may be the first time you’v...
“I’ve tested this code, it runs.” — running doesn’t mean correct, and manual testing doesn’t mean test coverage. When you change a line of code, how do you make sure you haven’t...
Earlier we introduced four tools—Checkstyle, PMD, FindBugs and SpotBugs. Each has its own focus, but they share one limitation: they are only good for “one person to look at”. I...
The previous article introduced FindBugs — a legendary bytecode-level bug checker, but one that stopped being maintained in 2016. Fortunately the community did not let it go qui...
Checkstyle handles formatting and PMD handles coding style, but some bugs hide deeper — such as null pointer dereferences, resources not closed, infinite recursion — these all l...
The previous article introduced Checkstyle, whose job is to decide whether code “looks standard”. But if the formatting is correct, is the code really good? Empty catch blocks, ...
Code style problems look trivial — whether the opening brace goes on a new line, how variables are named, whether imports may use wildcards — but when everyone on the team has t...
The code is written, it runs, the functionality is correct — but is that enough? The code may be hiding potential null pointers, unclosed resources, non-standard naming, redunda...
When Heaven is about to bestow a great task on someone, it first denies them what they wish for, so that they come to know how winding and how hard the ways of the world are, an...
When the heart is one, there is faith and joy; When things are set apart, there is doubt and sorrow. The human heart loves stillness, and returns;
September 27, 2015 The bright moon hangs in the sky; seeing the moon, one awakens to emptiness. Empty of all things, yet able to hold all things.