Availability
HTTP, TCP and service checks show whether users can reach the application.
Tool
Server, application and domain monitoring
Monitoring for VPS, cloud servers, applications, HTTP, SSL, DNS, resources, logs and alerts for business services.
Monitoring should cover more than uptime. Business services need checks for HTTP, SSL, DNS, resources, logs, backup, processes and alerts tied to real service impact.
PageSpeed
Check HTTP status and response time.
SSL checker
Watch certificate validity and trust chain.
DNS audit
Verify domain and DNSSEC health.
Cloud backup
Monitor backup jobs and restore readiness.
Cloud server
Choose an environment that can be observed.
Looking Glass
Check BGP path when routing is suspected.
Server, application and domain monitoring
Uptime is only one signal. A service can answer while the disk fills up, backup fails, SSL expires, DNS drifts or the application returns errors to real users.
Monitoring areas
Certificates and DNS
SSL expiry, trust chain, DNS records and DNSSEC should be checked before users notice.
Resources
CPU, RAM, disk, I/O and process state help detect capacity or failure trends.
Backup and logs
Backup success, restore tests and error logs are critical operational signals.
Monitoring rollout order
- Define critical services. List domains, applications, mail, databases and administrative access paths.
- Add external checks. Monitor HTTP, SSL and DNS from outside the server.
- Add internal checks. Track resources, processes, logs and backup jobs.
- Set alert rules. Alert only when there is service impact or a risk that needs action.
- Review after incidents. Adjust thresholds and missing checks after every real incident.
What should wake an administrator?
- Service unavailable or repeated application errors.
- Expiring certificate or broken trust chain.
- Disk close to full or backup missing.
- Database, queue or worker process failure.
- DNS or routing problem affecting production traffic.
FAQ: server monitoring
How should I use this DataHouse page?
Use it as a technical checklist and connect it with the relevant diagnostic tools before or after a production change.