Know WHY your site went down — not just that it did
Most monitoring tools tell you something is broken. PulseStack™ tells you exactly what broke, why, and how to fix it — by connecting to your server and running real diagnostic checks.
The problem with traditional monitoring
Every monitoring tool can tell you a site is down. Almost none of them tell you why.
Alert: Your site is down!
You get a notification. Something is broken. But what? You have no idea. Time to start guessing.
Generic advice: Check your logs
Helpful, right? SSH in, grep through files, hope you find something relevant in thousands of lines.
Hours of manual debugging
Is it DNS? Memory? Disk space? SSL? You check each one manually while your site stays down and users leave.
Automatic root cause diagnosis
The moment downtime is detected, PulseStack™ SSH-connects to your server and runs all 12 diagnostic checks in parallel. Within seconds, you have the exact cause, affected services, and terminal commands to fix it. No guessing, no manual investigation, no wasted time.
Every check that runs when your site goes down
Not one check. Not three. Twelve independent diagnostics run in parallel on your server to find the root cause in seconds.
HTTP Response Check
Tests the URL directly from our servers to verify HTTP status code and response time.
DNS Resolution
Verifies DNS records resolve correctly and checks for propagation issues across nameservers.
SSL Certificate
Checks certificate validity, expiration date, and chain trust for HTTPS connections.
Port 443 (HTTPS)
Verifies the HTTPS port is open, listening, and accepting TCP connections on the server.
Port 80 (HTTP)
Verifies the HTTP port is accessible and responding to incoming connection requests.
Nginx/Apache Status
Checks if the web server process is running and reports its current operational state.
Nginx/Apache Config Test
Validates the web server configuration syntax to detect misconfigurations causing failures.
Disk Usage
Checks all disk partitions for space issues that can cause write failures and crashes.
Memory Usage
Checks RAM and swap usage to detect memory exhaustion causing OOM kills and slowdowns.
System Load
Evaluates CPU load averages against core count to identify processing bottlenecks.
Recent Error Logs
Searches system and application logs for recent errors, warnings, and crash traces.
Listening Services
Audits all processes listening on network ports to detect crashed or hung services.
How it works
From detection to diagnosis in seconds. Fully automated, zero manual work.
Monitor detects downtime
Your HTTP, port, or keyword check fails. PulseStack™ confirms the outage from multiple global locations to rule out false positives.
We connect to your server
Via SSH or our lightweight agent, PulseStack™ runs all 12 diagnostic checks in parallel directly on your server. Real commands, real output.
You get the diagnosis
The exact root cause is identified and presented with context and fix commands. Your team can resolve the issue in minutes, not hours.
Real-world diagnoses from PulseStack™
These are the kinds of problems our root cause analysis catches every day. Real symptoms, real causes, real fixes.
Server RAM at 92%. PHP-FPM workers consuming all available memory, causing nginx upstream timeouts.
/var/log partition at 100%. Application unable to write temp files or session data, crashing on every request.
Certificate expired 2 days ago. Browser and bot traffic both affected. Auto-renewal failed due to DNS challenge.
DNS records updated 4 hours ago but 2 of 6 nameservers still returning old IP address. ~33% of requests failing.
A better way to handle downtime
Without PulseStack™
With PulseStack™
That's a 20x faster resolution time. Every minute of downtime costs money.
Available on Pro and above
Root Cause Analysis is included with Pro plans and above. Server Diagnostics (required for root cause analysis) is available on Team plans and above.
Start monitoring in 30 seconds.
There's nothing to install. No credit card required. Free plan included.