Tomcat(톰캣) SSL 포트 설정

https룰 사용하기 위해 톰캣의 server.xml 에 아래의 설정 추가


<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
               maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" URIEncoding="UTF-8" />

.keystore 생성


[/user@hostname]$ $JAVA_HOME/bin/keytool -genkey -alias tomcat -keypass changeit -storepass changeit -keyalg RSA -keystore ${HOME}/.keystore -dname "CN=localhost, OU=OrgUnit, O=MyCompany, C=KR"

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The logs of the kubelet service

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Using the MinIO API via curl

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Install and run an FTP server using Docker

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Screenshot of a web page using Puppeteer with a specific browser width, 웹페이지 스크린샷

To get a screenshot of a web page using Puppeteer with a specific browser width, you can follow these steps: Install Puppeteer by running the command npm install puppeteer in your project directory. Require Puppeteer in your Node.js script: const puppeteer = require( 'puppeteer' ); Launch a new browser instance with the desired viewport size: const browser = await puppeteer.launch({ defaultViewport: { width : 1280 , height : 720 , }, }); Create a new page in the browser: const page = await browser. newPage () ; Navigate to the desired URL: await page. goto ( 'https://example.com' ); Take a screenshot of the page: await page .screenshot ({ path : 'screenshot.png' }); Close the browser instance: await browser.close() ; Here's the complete code: const puppeteer = require ( 'puppeteer' ); ( async ( ) => { const browser = await puppeteer.launch({ defaultViewport : { width : 1280 , ...
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CDPEvents in puppeteer

In Puppeteer , CDPEvents refers to events emitted by the Chrome DevTools Protocol (CDP) . Puppeteer leverages CDP to interact with and control a Chromium-based browser. CDP provides detailed, low-level access to browser internals, such as network traffic, console logs, page lifecycle events, and more. You can listen to these CDP events through Puppeteer’s API to monitor or intercept browser activity. How to Listen for CDP Events in Puppeteer Enable the Required CDP Domain: Some events require enabling a particular domain (e.g., 'Network' , 'Page' , 'Runtime' ). Use page._client() to Access the CDP Session: Although it’s a bit lower-level, Puppeteer allows access to DevTools through the page._client() API. Example: Listening for Network Requests This example demonstrates how to intercept and log network requests using CDP. const puppeteer = require( 'puppeteer' ); ( async () => { const browser = await puppeteer.launch({ headless...
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Using venv in Python

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To switch to a specific tag in a Git repository

To switch to a specific tag in a Git repository, you can use the git checkout or git switch command. Here's how you can do it: 1. List Available Tags First, you may want to see a list of all available tags in the repository: git tag 2. Checkout a Specific Tag Once you know the tag you want to switch to, you can use either git checkout or git switch (if you're using a newer version of Git, which recommends git switch for checking out branches). Using git checkout : git checkout <tag- name > Using git switch (recommended for newer versions of Git): git switch -- detach <tag- name > The --detach flag is necessary because tags are not branches; they are just pointers to specific commits. Using --detach makes your HEAD point to the tag without modifying any branch. 3. Verify the Checkout After switching to the tag, verify that you're on the correct commit: git status This will show the tag you're currently on (you'll see somethi...
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Delete topic on Kafka, 카프카 토픽 삭제하기

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NodePort vs ClusterIP on Kubernetes, 쿠버네티스 서비스

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