devops

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 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 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.

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 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.

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

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

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.

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

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.

Learn how to configure Azure DevOps permissions for environments so team members can approve YAML pipeline access to DevServers without admin intervention. Step-by-step guide to environment security, manual approvals, and troubleshooting.

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 Helm handles externalIPs for Kubernetes services. Discover why manual configuration is required and best practices for managing externalIPs in Helm deployments.

Step-by-step guide to configure cron.bat in Open Server scheduler for Symfony console commands like CronCommand and PaymentCommand. Use %sitedir%, %progdir% variables, nnCron syntax, and troubleshoot logs for reliable Windows automation.

Resolve Snakemake RuntimeError can't start new thread in large workflows with many studies. Use --max-threads 1, ulimit -u 4096, optimize jobs/cores for job_scheduler.py thread exhaustion at 98% complete.

Learn how a Zabbix agent on 192.168.1.2 monitors UDP ports on remote hosts like 192.168.1.3 without installing an agent. Use net.udp.service for NTP, custom scripts for any port, and troubleshoot UDP pitfalls for reliable monitoring.

Is committing .gitignore a best practice? Explore benefits like tracking ignore pattern changes over time, team consistency, clean repos, CI/CD support, plus drawbacks and fixes like local excludes for optimal Git workflows.

Learn the fastest methods to copy a PostgreSQL database from production to development using pg_dump, pg_restore piping, pg_basebackup, and pgcopydb. Step-by-step guides, best practices for speed, security, and automation.