Articles & Guides
Useful resources for web developers and system administrators
Monitoring
How to Check if a Site Is Blocked in Russia (RKN)
Detect RKN blocking of a website: signs of a block, checking availability from Russia vs abroad, multi-region testing, curl commands and online tools.
Monitoring
Website Monitoring and Russian Data Law (152-FZ): What Matters
How website availability monitoring supports Russia's 152-FZ data law: in-country data storage, due diligence, checks from Russia, alerts and incident logs.
Monitoring
Status Page Best Practices
How to build a status page people trust: honest incidents, clear components, subscriptions and embeddable badges. Practical rules and examples for enterno.io.
Monitoring
Multi-Region Monitoring: Checks from RU/EU/US
Why monitor your site from several regions: catch regional outages, routing problems and CDN issues. How to read divergence between RU, EU and US in enterno.io.
Monitoring
Cron Job Monitoring: Dead Man's Switch
How to monitor cron jobs with a dead man's switch: heartbeat pings, grace windows, alerts on silence. Practical guide with real cron examples.
Domains
Domain Expiry Monitoring
Domain expiry monitoring protects you from losing your name: WHOIS expiry checks, 30/14/7-day alerts, auto-renewal. How to set it up and never lose a domain.
DNS
DNS Monitoring: Why and How
DNS monitoring guards against silent failures: record tampering, expired resolution, failover issues. How to set up a DNS monitor and check records with dig.
Monitoring
Website Monitoring for Developers: API, CLI, MCP
Monitoring for developers: manage monitors via REST API, CI/CD scripts, and an MCP server for Claude, Cursor, and Zed. Health checks, alerts, automation.
Monitoring
API Uptime Monitoring: A Guide
How to set up API uptime monitoring: health-check endpoints, check intervals, Telegram and Slack alerts, and SLA metrics. A practical guide for teams.
Monitoring
Monitoring WordPress Sites
Monitoring WordPress sites: how to catch the white screen of death, plugin-update crashes, SSL expiry, and slow response times. A practical 2026 guide.