Vultr is a favourite cloud platform among developers: fast SSD VPS instances, a clean API, and competitive pricing across global data centres. But when it comes to knowing whether your application is actually up and serving users, Vultr's native tools only tell half the story.
Here's why developers on Vultr consistently add Vigilmon alongside Vultr's built-in metrics — and what the two tools cover that the other doesn't.
What Vultr Monitoring Provides
Vultr's monitoring capabilities are built around server-side infrastructure metrics. When you provision a Compute instance, you get:
- Bandwidth graphs: Inbound and outbound network traffic over time
- CPU usage graphs: Instance-level CPU utilisation visible in the Vultr console
- Basic email alerts: Threshold alerts for CPU, bandwidth, and instance availability
- Vultr Health Dashboard: General platform status for Vultr's own infrastructure
These tools are useful for understanding how your Vultr instances are performing. But they answer the question "is my server healthy?" — not "is my application responding correctly to users?"
There's a meaningful gap between those two questions.
What Vigilmon Provides
Vigilmon monitors your services from the outside — the same perspective users have when they visit your site or call your API. Core capabilities:
- External HTTP/HTTPS uptime checks: Periodic checks from multiple geographically distributed nodes
- Multi-region consensus alerting: An alert only fires when all monitoring nodes confirm failure — not on single-region blips
- SSL certificate monitoring: Automated alerts before your certificate expires
- Response time tracking: Detect performance degradation before it causes user-facing problems
- Status pages: A hosted page to communicate incident status to users and stakeholders
- Webhook and Slack integration: Route alerts to wherever your team responds fastest
Pricing Comparison
| Plan | Vultr Monitoring | Vigilmon | |------|-----------------|---------| | Free tier | Bundled with Compute | 5 monitors, 5-min intervals, no card | | External uptime checks | Not available | All plans | | SSL monitoring | Not available | All plans | | Status pages | Not available | Included | | Standalone monitoring product | No | Yes | | Paid plans | N/A | Affordable flat pricing |
Vultr doesn't sell monitoring as a separate product. What you get is bundled with your Compute instances and focused entirely on server-side metrics. If you want external uptime monitoring, you're on your own — or you add a dedicated tool like Vigilmon.
Vigilmon's free tier is a real starting point: 5 monitors, 5-minute check intervals, no credit card required. Most solo developers and small teams can cover their critical services without spending anything.
The Core Problem: Internal Metrics Don't Catch Application Failures
Your Vultr instance can show 100% uptime in the console while your users experience something very different.
Consider these common failure scenarios that Vultr monitoring will not catch:
- Process crash: Your Node.js or Python process exits and isn't restarted. Server is up; app is down.
- Port binding failure: Your app fails to bind to port 80/443 after a restart. NGINX returns connection refused.
- Database connection exhaustion: Your app is running but unable to serve requests because it can't connect to the database.
- Bad deployment: A new release introduced a bug that causes 500 errors on every request. CPU and RAM look fine.
- DNS misconfiguration: A TTL expired and your DNS record is pointing nowhere. Your instance is healthy; nobody can reach it.
- SSL certificate expired: Your cert lapsed because Let's Encrypt auto-renewal failed. Users get certificate errors; your server metrics are normal.
In every one of these scenarios, Vultr's console shows a healthy instance. Vigilmon catches all of them.
Multi-Region Consensus: Smarter Alerting
Single-location monitoring creates a different problem: false alarms.
If you run your own monitoring script, or use a basic tool that checks from one location, you'll occasionally get alerts when your service is actually fine. A brief routing issue between the monitoring server and your Vultr instance. A DNS propagation hiccup. A CDN edge problem on one side of a peering point.
These false alarms erode trust in your alerting system. After enough false positives, you start muting alerts or ignoring them on the first page — exactly the wrong habit to have when a real incident hits.
Vigilmon's multi-region consensus works differently:
- Multiple monitoring nodes in different regions check your endpoint simultaneously
- If only some nodes report a failure, it's logged but no alert is sent
- An alert fires only when all nodes independently confirm the endpoint is unreachable or returning errors
- Single-region issues are automatically filtered as transient noise
For Vultr developers who often run services in a single data centre, this distinction matters. Upstream network issues between one monitoring region and your Vultr location don't generate false alarms.
SSL Certificate Monitoring on Vultr
Most Vultr developers manage their own TLS certificates using Let's Encrypt via Certbot, or through a reverse proxy like Caddy that handles automatic renewal. Both approaches work well — until they don't.
Let's Encrypt renewal can fail when:
- Your domain's DNS doesn't resolve correctly during renewal
- A firewall rule blocks the ACME challenge
- The renewal cron job fails silently
- Your server runs out of disk space
When renewal fails, your certificate expires silently. The first you hear about it is a user complaint or a spike in support tickets. Certificate errors block users outright — browsers refuse to load sites with expired certs.
Vigilmon monitors certificate expiry dates and alerts you at 30, 14, and 7 days before expiration. Plenty of time to renew or investigate the failure. No manual tracking required.
API-First Integration
Vultr is popular partly because of its clean API — developers like platforms they can script and automate. Vigilmon is built the same way.
Every Vigilmon feature is available via REST API:
- Create and update monitors programmatically
- Query uptime history and response time data
- Retrieve incident timelines
- Manage status pages via API
If you use Terraform, Ansible, or custom deployment scripts to manage your Vultr infrastructure, you can integrate Vigilmon into those workflows. Add a monitor when you deploy a new service. Update check intervals when you scale. Pull uptime data into your dashboards.
Status Pages for Incident Communication
When incidents happen — and they will — users want answers. Posting manual updates on social media is slow, inconsistent, and doesn't scale to multiple incidents or services.
Vigilmon's built-in status pages:
- Automatically reflect real-time monitor status
- Let you post manual incident updates and post-mortems
- Can be customised with your branding
- Are shareable as a public URL or restricted to logged-in users
Link your status page from your app, your docs, or your support portal. When something goes down, users can check the status page instead of flooding your support inbox.
Feature Comparison
| Feature | Vultr Native | Vigilmon | |---------|-------------|---------| | External uptime checks | No | Yes | | Multi-region consensus alerting | No | Yes | | SSL certificate monitoring | No | Yes | | Internal server metrics | Yes | No (by design) | | Status pages | No | Yes | | Free tier | Bundled only | Yes (5 monitors, no card) | | API access | Vultr infra API (not monitoring) | Full monitoring API | | Slack/webhook alerts | No | Yes | | Response time tracking | No | Yes | | False alarm filtering | No | Yes (automatic) |
Setting Up Vigilmon with a Vultr Deployment
A practical workflow for Vultr developers:
- Deploy your service to your Vultr Compute instance
- Verify the service is running locally on the instance
- Sign up for Vigilmon at vigilmon.online — free, no credit card
- Add your domain as an HTTP monitor (e.g.
https://api.yourapp.com) - Configure alert channels — email, Slack, or webhook to your PagerDuty or Opsgenie
- Enable SSL monitoring for the same domain
- Optionally create a status page and link it from your app
From provision to monitored takes less than 15 minutes total. After that, Vigilmon runs continuously in the background. You don't touch it again until you get an alert — or until you want to add more monitors.
When to Use Vultr's Built-In Tools
Rely on Vultr's console metrics for:
- Monitoring bandwidth usage to manage costs
- Identifying CPU bottlenecks that indicate a need to resize
- Understanding network throughput patterns over time
- Checking whether a Vultr-side incident is affecting your region
When to Add Vigilmon
Add Vigilmon when:
- Your app going down without you knowing is unacceptable
- You manage SSL certificates and want expiry warnings
- You want users to see a status page during incidents instead of getting errors
- You need per-endpoint response time tracking
- False alarms from simpler monitoring have made you distrust your alerts
Conclusion
Vultr's built-in monitoring is honest about what it does: it tells you how your infrastructure is performing. It's not designed to verify that your application is healthy from the user's perspective, and it makes no attempt to be.
Vigilmon does exactly that. It's the external lens on your Vultr services — checking your endpoints from outside your infrastructure, the same way your users reach them. Together, Vultr's internal metrics and Vigilmon's external checks give you complete visibility.
Add external uptime monitoring to your Vultr stack today — try Vigilmon free. No credit card required.