KamranBiglari

Automating AWS ECR Credential Refresh in Kubernetes with Terraform

The Problem: ECR Tokens That Expire Every 12 Hours

If you're running a Kubernetes cluster and pulling Docker images from AWS Elastic Container Registry (ECR), you've likely encountered this frustrating problem: ECR authentication tokens expire every 12 hours.

This means your pods can't pull images after the token expires, leading to failed deployments and restarts. While this is a security feature by design, it creates an operational headache for teams running production Kubernetes clusters.

Common Solutions and Their Limitations

KamranBiglari

🛠 MikroTik CHR: Private Network Setup on Hetzner Cloud

This guide explains how to configure MikroTik RouterOS (CHR) to connect to a Hetzner Cloud Private Network using a /32 IP address — the default setup in Hetzner.

📋 Prerequisites

• You’ve created a Hetzner Cloud Network (e.g., 172.16.64.0/21)

• A subnet (e.g., 172.16.64.0/28) is attached to your CHR instance

• You can access the MikroTik terminal (serial, SSH, or Winbox)

KamranBiglari

KamranBiglari

This Bash script establishes a WebSocket connection to a server, allowing users to send a sequence of messages interactively. It is particularly useful for testing WebSocket APIs or automating WebSocket-based data subscriptions.

The script leverages websocat for WebSocket communication. If websocat is not installed, the script will prompt the user to install it automatically.

Features

• Interactive Setup: The script prompts the user for essential parameters, including:
• WebSocket URL: Defaults to wss://example.com if left blank.
• Username and Password: For authentication in the WebSocket server.
• Currency (CCY): Used to specify the currency in the subscription message.

KamranBiglari

SELECT * FROM "${Table}" WHERE id='${Id}'