To change the ESE index in Fluent Bit

To change the ESE index in Fluent Bit, you can follow these steps:

  1. Open the Fluent Bit configuration file (typically located at /etc/td-agent-bit/td-agent-bit.conf or /etc/fluent-bit/fluent-bit.conf, depending on your installation).

  2. Locate the output section for the ESE output plugin. It should look something like this:

    [OUTPUT]
    Name        ese
    Match       ese.*
    Index       fluent-bit
    Database    /var/lib/td-agent-bit/ese.db
    Interval_Sec 10

  3. Change the value of the Index parameter to the desired name of your ESE index. For example, if you want to create an index named "myindex", you would change the configuration to:

    [OUTPUT]
    Name        ese
    Match       ese.*
    Index       myindex
    Database    /var/lib/td-agent-bit/ese.db
    Interval_Sec 10

  4. Save the configuration file and restart the Fluent Bit service to apply the changes.

    On Linux, you can restart Fluent Bit using the following command:

    sudo systemctl restart td-agent-bit

    On Windows, you can restart the Fluent Bit service from the Services app in the Control Panel.

After following these steps, Fluent Bit will use the new ESE index name that you specified in the configuration file.

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The logs of the kubelet service

The logs of the kubelet service can be found depending on how the system is set up. Here are the most common locations: 1. Systemd Logs If your system uses systemd to manage services (most modern Linux distributions do), you can view the kubelet logs using journalctl : View Real-time Logs: sudo journalctl -u kubelet -f View Historical Logs: sudo journalctl -u kubelet 2. Log File on Disk On some systems, kubelet writes its logs to a file in /var/log . The exact location depends on the configuration: Common Locations : /var/log/kubelet.log /var/lib/kubelet/logs If the log file is not there, check the kubelet service configuration for custom log paths. 3. Kubernetes Configuration Flags The kubelet log location can be customized using the --log-dir or --log-file flags in the kubelet service configuration. To verify: Check the kubelet service file: cat /etc/systemd/system/kubelet .service .d / 10 -kubeadm.conf Look for logging-related flags, such as: Exec...
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Using the MinIO API via curl

Using the MinIO API via curl is straightforward, as MinIO is compatible with Amazon S3 API, so most commands follow a similar syntax. Here’s a guide on how to use curl with the MinIO API for some common operations like uploading, downloading, and managing objects. Prerequisites Access Key and Secret Key : Obtain your MinIO Access Key and Secret Key. MinIO Endpoint : Know your MinIO server endpoint, e.g., http://localhost:9000 . Bucket : You may need an existing bucket name, or create a new one using the commands below. Authentication Header For requests to work with MinIO, you need to include authentication in the headers. MinIO uses AWS Signature Version 4 for signing requests. Common Examples 1. List Buckets To list all buckets in your MinIO account, use: curl -X GET \ - -url "http://localhost:9000/" \ - H "Authorization: AWS <AccessKey>:<Signature>" 2. Create a Bucket To create a new bucket, use: curl -X PUT \ - -url "htt...
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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

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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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