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#$USER_ID
#$USER_PW
#$SVN_URL
#$DEST

[/home@hostname] svn checkout -q --username $USER_ID --password $USER_PW --no-auth-cache -r HEAD $SVN_URL $DEST

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how to make inactive kafka topic, 카프카 토픽 비활성화

To make a Kafka topic inactive, meaning it no longer receives new messages and its data is eventually deleted, there are several strategies you can follow. Kafka doesn’t have a specific “inactive” state for topics, but you can achieve this effect by adjusting the configuration settings and permissions. Here are some methods to make a Kafka topic "inactive": 1. Restrict Producer Access (Prevent Writing New Messages) One way to make a Kafka topic inactive is to prevent producers from writing new messages to it. You can do this by modifying access control lists (ACLs) or configurations, depending on your Kafka setup. Steps: Modify ACLs to restrict producer access to the topic. If you have security enabled, you can revoke the producer’s permission to write to the topic. bin/kafka - acls . sh - - bootstrap - server localhost:9092 - - remove - - allow - principal User: < producer - user > - - operation Write - - topic < topic - name > This command will ...
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Consume a topic from kafka by Python

Sure, I can help you develop Python code to consume topics from Apache Kafka using the confluent-kafka library. Make sure you have Kafka installed and running, and you have the confluent-kafka library installed using pip install confluent-kafka . Here's an example of how you can consume messages from a Kafka topic: from confluent_kafka import Consumer, KafkaError # Kafka configuration config = { 'bootstrap.servers' : 'localhost:9092' , # Replace with your Kafka broker addresses 'group.id' : 'my-group' , # Consumer group ID 'auto.offset.reset' : 'earliest' # Start consuming from the beginning of the topic } # Create Kafka consumer instance consumer = Consumer(config) # Subscribe to a topic topic = 'my-topic' # Replace with the topic you want to consume from consumer.subscribe([topic]) # Consume messages try : while True : msg = consumer.poll( 1.0 ) # Poll for new messages with a...
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리눅스의 부팅과정 (프로세스, 서비스 관리)

보통 사용되지 않는 서비스나 사용 빈도가 적은 프로세스의 경우 stop 시켜두는 것이 시스템 사용 상의 이점이 있다. 자신에게 필요 없는 프로세스를 정지 한다거나 nice 값을 조정하여 실행 시에 프로세스의 우선순위를 변화시킬 수 있다. 이렇게 시스템 상황에 따라 적절히 서비스들을 관리하려면 현재 자신의 시스템의 여러가지 상황을 알아야 하는데, 이런 경우 프로세스 및 실시간 시스템 상황을 보는 명령어인 top 을 사용할 수 있다.  top [-][d delay][q][c][S][s][i][n][b] -d delay : delay 의 시간이 경과하면 현재 스크린을 갱신한다. -q : 이 옵션을 사용하면 스크린을 계속 갱신한다. -c : command list 전체를 보여준다. 즉 욥선을 사용한 것까지 모두 보여준다. -i : idle 상태와 zombie 프로세스는 무시한다.   * 이 외의 옵션은 man 파일을 참고 top 실행 화면 1. First Line :  2:59am up 6days, 10:36,  4 users,  load average    : 현재 시간 2:59 am , 부팅된지 6days and 10시간 36분, 접속해 있는 사용자수, 평균부하 2. Second Line : 61 processes: 56 sleeping, 3 running, 1 xombie, 1 stopped 3. Third Line : CPU states: 36.4% user, 63.5% system, 0.0% nice, 0.0% idle     유저모드에서의 CPU 시간이 36.4%     시스템모드(프로세스를 위해서 커널이 사용한 CPU의 시간)에서의 CPU시간이 63.5%     0.0% nice는 nice로 nice value를 음수로 주어 우선순위를 높이는 경우에 해당하는 모드     0.0% idle(...
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What are 5 creative things I could do with my kids' art, 아이와 함께하는 창의적 놀이

Absolutely, preserving your kids' art while also finding creative ways to utilize and display it can be a wonderful solution. Here are five creative ideas to consider: Art Gallery Wall: Designate a section of a wall in your home as an art gallery. Frame selected pieces of your kids' art and arrange them in an organized or eclectic manner. You can change the display periodically to showcase different artworks, creating a rotating gallery. Customized Photo Books: Compile your children's art into a digital photo book or album. Many online services allow you to create customized photo books. Arrange the artwork, add captions, and create a keepsake that you can flip through whenever you want to reminisce. Transform into Functional Items: Turn your kids' artwork into functional items such as placemats, coasters, tote bags, or even custom-made wrapping paper. There are companies that can print your children's art onto these items, making them practical and sentime...
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ftplib.error_perm: 550 Permission denied

The 550 Permission denied error in ftplib occurs when the FTP server denies access to the specified file or directory. This error can be caused by several issues such as: Incorrect file path or directory path on the server. Lack of write permissions for the specified directory. The FTP user does not have the required permissions to upload to the given directory. The remote directory may not exist. Steps to Troubleshoot and Resolve the Issue Here are some steps you can try to fix the 550 Permission denied issue: 1. Check the File Path and Directory on the FTP Server Make sure the remote path you are trying to upload to exists on the FTP server. If you're uploading to a specific directory, you may need to create it first. You can use the following code to list the files and directories on the server to ensure your paths are correct: from ftplib import FTP def list_files (ftp_host, ftp_user, ftp_password) : try : ftp = FTP(ftp_host) ftp.login(...
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ssh-copy-id in ansible

ssh-copy-id is a command-line tool used to copy your public SSH key to a remote server's authorized_keys file, allowing you to log in to the server without entering a password. Ansible is an open-source automation tool used to manage and configure multiple remote servers simultaneously. In Ansible, you can use the authorized_key module to manage the authorized keys of remote servers. This module allows you to add, remove, or replace SSH keys in a remote user's authorized_keys file. To add your public SSH key to a remote server using Ansible, you can use the authorized_key module. Here's an example playbook that adds your public SSH key to a remote server's authorized_keys file: - name: Add SSH key to authorized_keys hosts: your_server become: true tasks: - name: Install SSH key for current user authorized_key: user: your_username key: " {{ lookup('file', '/path/to/your/public/key/id_rsa.pub') }} " ...
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Sort the distinct values by their count in descending order using the DataFrame API

To sort the distinct values by their count in descending order using the DataFrame API in Spark, you can use the orderBy() function with the ascending=False parameter. Here’s how you can modify the DataFrame API example to include sorting in descending order: Example: Get Distinct Values and Their Counts with Descending Order Sorting # Read the table into a DataFrame df = spark. read . table ( "table_name" ) # Group by the field and count , then order by count in descending order distinct_counts = df.groupBy( "field_name" ). count ().orderBy( "count" , ascending=False) # Show the results distinct_counts.show() Explanation: groupBy("field_name") : Groups the data by the distinct values in the field_name column. count() : Counts the number of occurrences for each distinct value. orderBy("count", ascending=False) : Sorts the result by the count in descending order . Optional: Collecting the Sorted Results If you...
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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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