Troubleshooting

Support guides for real tickets

These guides are written for junior support engineers and technical learners who need calm first checks, useful commands and safe escalation notes.

First checks

Troubleshooting library

Use these as practical references when learning support workflows or building internal training material.

A calm first-response checklist for checking HTTP status, DNS, server load, logs and recent changes.

A practical guide to A, CNAME, MX, TXT, NS, TTL and propagation checks.

Check SPF, DKIM, DMARC, MX records, queues, bounces and reputation without flapping about.

Diagnose expired certs, wrong hostnames, chain issues, mixed content and HTTPS redirects.

Find large files, full partitions, inode usage, logs, backups and safe cleanup candidates.

First checks for database connectivity, size, slow queries, crashed tables and resource pressure.

Use access logs and error logs to understand traffic, 403s, 500s, bots and broken scripts.

Understand rule hits, false positives, safer exclusions and customer-friendly explanations.

A hosting-focused checklist for plugins, themes, PHP errors, caching, cron and database issues.

A plain-English tour of accounts, domains, DNS, email, files, logs and package limits.