Know when servers have problems
before your users do.
Monitor server health and services from a single dashboard. CPU spikes, disk warnings, unresponsive services — catch them before they become outages.
No credit card required
What you can monitor
Check every critical service running on your servers. Track response times, connection quality, and health metrics for each one.
Web servers
HTTP/HTTPS response codes, response times, SSL certificate expiry. Know when your web server stops responding or slows down.
Website monitoring docsDatabase servers
MySQL connection checks and query responsiveness. Catch connection refusals and slow queries before applications fail.
Mail servers
SMTP, POP3, and IMAP availability checks with response time tracking. Know when email stops flowing.
Remote access
SSH connectivity checks and port availability monitoring. Verify you can always reach your servers when you need to.
DNS servers
Resolution checks and response time tracking. Detect DNS failures before they cascade into service outages across your infrastructure.
Custom services
TCP port monitoring for any service on any port. If it listens on a port, ACS Monitor can check it.
Service monitoring docsUnderstand server health in depth
Go beyond surface-level checks. Track performance trends, resource utilisation, and service quality over time.
Service health diagnostics
Each service check captures more than a pass/fail result. Track connection times, response codes, and protocol-level details so you can diagnose degradation before it becomes a user-facing issue.
- Connection time, response time, and total duration per check
- HTTP status codes, SSL validity, and certificate chain details
- Configurable check intervals from 30 seconds to 30 minutes
Performance-aware alerting
Alerts that understand the difference between a brief hiccup and genuine performance degradation. Consecutive failure thresholds eliminate false positives, while per-service rules let you tune sensitivity for each check.
- Consecutive failure thresholds — 2 for critical, 5 for informational
- Per-server and per-service alert rules
- Route via email, SMS, Slack, or webhooks
Alert triggered:
Performance trend analysis
Track response times over hours, days, and weeks to understand how your servers are really performing. Spot gradual degradation, correlate slowdowns with deployments, and identify capacity bottlenecks before they affect users.
- Historical response time graphs for every service
- Identify slow trends and capacity bottlenecks
- Compare performance across servers at a glance
Response time increasing — investigate before failure
More than just server monitoring
ACS Monitor combines service monitoring with SNMP device monitoring, auto-discovery, custom dashboards, and network diagnostic tools in a single self-hosted platform. Monitor your servers and your entire network from one place.
Server monitoring included in every plan
No per-check pricing. No feature gates. Monitor every service within your device and monitor cap.
Free
forever
Up to 100 devices & monitors
Pro
per year
Up to 500 devices & monitors
Enterprise
per year
Up to 1,000 devices & monitors
Learn more about ACS Monitor
Explore how ACS Monitor fits your needs.
Stop finding out about server problems from your users.
Deploy ACS Monitor and know the moment a server or service goes down. Free for up to 100 devices and monitors.