Technology

Deploying a Hello World Web App on K3s Cluster on Proxmox

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This guide walks through deploying a simple nginx-based hello world application on a K3s cluster, using Traefik ingress for external access on standard HTTP port 80. Prerequisites Step 1: Create the Application Deployment Create a file called nginx-hello-deployment.yaml: Step 2: Create Service and Ingress Create nginx-hello-ingress.yaml: Step 3: Deploy the Application Step 4: Verify Deployment … Read more

How to Restore a PostgreSQL Backup on OVH’s Managed Database (Without Superuser Access)

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OVH’s managed PostgreSQL hosting limits superuser operations like DROP SCHEMA, ALTER OWNER, GRANT, and REVOKE, making a standard backup restore fail. This article outlines a clean workaround using psql. Problem When restoring a backup with: You may hit errors like: Why? Because: ✅ Solution: Manual Table Cleanup + Clean Dump Restore 1. 🔽 Connect and … Read more

Recover a Corrupt Google Cloud VM with Disk Space Issues Caused by Docker

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Google Cloud VMs can sometimes get stuck or become inaccessible due to disk space exhaustion — often from leftover Docker images, containers, and volumes accumulating after CI/CD pipelines. Here’s a clear, practical step-by-step guide to restore your VM and clean up Docker efficiently. Scenario Step 1: Create a Rescue VM and Attach the Corrupt Disk … Read more

Why Some “Copycat” Companies Succeed Despite Competition

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Even with existing ideas, execution beats originality in many real-world cases. Here’s why they can succeed: 1. Better Execution 2. Better Timing 3. Focused Niche / Geography 4. Superior Distribution / Growth Engine 5. Brand Positioning or Pricing Why VCs Often Don’t Like “Copycat” Models They are playing a different game: 1. VCs Seek Asymmetric … Read more

Fix and Launch ScriptCommunicator on Ubuntu (and missing Qt dependencies)

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ScriptCommunicator is a powerful Qt-based serial port communication tool, popular among embedded developers and makers. Here’s a straightforward guide to get it running on Ubuntu. Step 1: Download ScriptCommunicator Step 2: Extract the package Unpack the archive: tar -xvzf ScriptCommunicator.tar.gzcd ScriptCommunicator Step 3: Install missing Qt dependencies Ubuntu may miss some Qt libraries. Install them: … Read more

Fixing GitLab Runner Shell Executor Permission Issues on Ubuntu 20-25

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The Issue: The error typically occurs when the GitLab Runner shell executor doesn’t have the necessary permissions to access or execute files in the /home/gitlab-runner directory. This can happen if: The Solution: A straightforward fix is to remove all dotfiles (.*) in the /home/gitlab-runner directory. These files might be causing the permission errors, especially if … Read more