devops

Set PowerShell to start in user home directory ($HOME) instead of System32 when launched via Windows Start menu search on Windows 11. Use profiles, edit shortcuts, or pin to taskbar for quick access to personal scripts and folders.

Resolve Docker Redis version mismatch in python:3.14.2-slim where pip show redis reports 7.1.0 but site-packages shows 2.0.0, causing AskError import issues. Fix pip dependency conflicts from Celery/Kombu with post-install reinstall.

Learn how to fix XRay configuration error with empty privateKey in 3x-UI panel. Three methods to generate X25519 keys and restore VLESS Reality connections.

Learn to check GitHub repository size in KB via API before git clone. Use curl, JavaScript, or CLI examples for public/private repos. Avoid disk surprises with shallow clone tips and limitations.

Learn how to make Bash scripts automatically exit with code 1 on any command failure using set -e and strict mode set -euo pipefail. Avoid manual $? checks for reliable error handling in bash scripts, pipelines, and DevOps automation.

Resolve GitLab push error for developers on protected branches like master. Learn causes, permissions, step-by-step fixes via settings or merge requests, force push options, and troubleshooting for GitLab branches.

Learn to untrack already committed files with git rm --cached, apply .gitignore to build artifacts like node_modules or venv, and remove them from Git history using filter-branch. Step-by-step guide for clean repos.

Learn to set up self-hosted VK autoposting with Postiz: web UI for scheduling posts in VK communities, undated drafts with images, precise dates/times, and pre-publish queues. Docker deploy in minutes for full control.

Set up NGINX reverse proxy on VDS server to bypass ISP blocks for multiple websites. Clients edit hosts file to point domains to VDS IP; handle efficient multi-site routing with server blocks, Host headers, and SSL configuration.

Discover where Git stores credentials and Codeberg access tokens after HTTPS auth. Learn git credential helper locations like ~/.git-credentials, Windows Credential Manager, macOS Keychain for secure management.

Learn how to view live MySQL queries on Linux using mysql show processlist, performance schema, and query logging. Monitor database activity in real-time for optimization and troubleshooting.

Learn how to rename a Git repository locally and on platforms like GitHub. Update remotes and avoid common pitfalls.

Step-by-step guide to fix 'composer minimum-stability stable' error for phpoffice/phpspreadsheet on PHP 8.2. Proper installation with Composer.

Optimal hub-and-spoke VPN architecture using MikroTik IPsec and OSPF for fault tolerance and performance across international boundaries.

Discover why 'ps' is missing in Debian Docker images causing 'bash: ps: command not found'. Quick fixes: install procps or use docker top for container processes without extra bloat.

Learn how to git clone a specific tag using --branch without the 'Remote branch not found' warning. Verify tags with git ls-remote, use shallow git clone depth 1, and avoid pitfalls like --single-branch for seamless GitHub repo cloning.

Resolve Yocto BitBake PermissionError [Errno 1] in do_package with EXTERNALSRC symlinks. Inherit relative_symlinks class, fix CMake recipes, understand Pseudo issues, and apply best practices for smooth packaging.

Resolve the 'event loop is already running' error in FastAPI Azure Functions with concurrent requests. Learn to use nest-asyncio, async endpoints, TableClient reuse, and best practices for smooth concurrency handling.

Resolve OpenLB KubeSphere LoadBalancer pending status, no EXTERNAL-IP assignment, 'no registered speaker layer2' EIP error, StrictARP config, Layer-2 mode enablement, and speaker registration issues in bare-metal clusters.

Resolve 'cosign error: reading key decrypt unexpected kdf parameter' in GitHub Actions using correct base64 encoding/decoding of private keys from secrets. Step-by-step fixes for reliable blob signing in CI/CD pipelines.