Alert rules for your servers, ready out of the box.
Set up alert rules in minutes with a catalog of pre-configured
templates for CPU, memory, disk, and availability. Pick a
template, choose which servers it applies to, and route
notifications to channels like Slack or Discord.
No credit card required
Features
Alert rules without the setup
Everything you need to catch problems before your users do, configured from the UI and applied across your whole fleet.
Threshold alerts
Fire on any metric crossing a threshold, like CPU above 90% or disk space running low. Tune the condition, the time window, and the severity per rule.
Sustained, not spiky
A rule can require a metric to stay above its threshold for a set window, so a brief peak never wakes you up. Cut the noise without missing real regressions.
Fleet-wide scope
Apply one rule to every server, a tag, or a single host. New servers that match the scope are covered automatically the moment they connect.
Server down alerts
Know within minutes when an agent stops reporting. Heartbeat rules watch for silent failures so an offline server never goes unnoticed.
Template catalog
Start from a catalog of pre-configured rules for CPU, memory, disk, swap, load, and common services. Toggle one on, adjust if needed, and you are covered.
Notification channels
Route alerts to the channels your team already uses, like Slack, Discord, email, and ntfy. Send different rules to different channels, and group notifications so your inbox stays readable.
Also Included
Beyond alert rules
Everything below comes bundled in the same platform, no extra setup required.
Server monitoring
Every server across cloud providers, VPS hosts, and on-premise hardware in a single dashboard.
Read more
Metrics & dashboards
CPU, memory, disk, and network with ready-to-use charts for every server.
Read more
Logs
Search Linux and Windows system logs across your entire fleet in one place.
Read more
Frequently Asked Questions
How do alert rules work with Simple Observability?
Pick a rule from the template catalog or build your own from any metric. Choose the scope (all servers, a tag, or a single host), set the threshold and time window, then pick where notifications go. The agent already collects the metrics, so rules evaluate server-side and fire the moment conditions are met.
Which notification channels are supported?
Supported channels include Slack, Discord, email, and ntfy. You can send different rules to different channels, and a single rule can notify more than one channel at once. Channels are configured once in the UI, then reused across every rule.
What is the alert template catalog?
A set of ready-made rules for the most common server problems: high CPU, low disk, memory pressure, server down, and more. Each template ships with a sensible threshold and window. Toggle one on, adjust if needed, and you are covered without writing a rule from scratch.
Can I apply one alert rule to my whole fleet?
Yes. Scope a rule to every server, a tag, or a single host. New servers that match the scope are covered automatically the moment they connect, with no extra config.
Do I need to build or maintain an alerting stack?
No. Rules, evaluation, and notifications are handled by the platform. There is no Alertmanager, Prometheus, or YAML to run, and you configure everything from the web UI.
Set up your first alert rule in minutes
Pick a template, choose your servers, and route notifications to channels like Slack, Discord, email, and ntfy. Get covered before your users notice a problem, with no alerting stack to build.
No credit card required
Instant setup