If you've ever joined an incident call only to discover the monitor for the affected service was either misconfigured, deleted, or never set up in the first place—you already understand why monitoring as code (MaC) exists.

Here's the short answer to the question this article addresses: With Site24x7's verified Terraform provider, you can define, deploy, and manage your entire website monitoring setup—monitors, alert thresholds, notification profiles, monitor groups—as version-controlled code. No dashboard clicks. No configuration drift. No monitoring that goes missing between deployments.

The rest of this article walks through exactly how to do that—from provider setup to CI/CD integration—with production-ready configuration examples throughout.

What is monitoring as code, and why does it matter?

If your team already uses Terraform for cloud infrastructure, you're familiar with infrastructure as code (IaC): the practice of defining servers, networks, and cloud resources in declarative files, committing them to version control, and deploying them through a repeatable, reviewable process.

MaC applies the same discipline to your observability stack. Instead of clicking through a dashboard to set up a monitor, you define it in a .tf file—check interval, alert thresholds, notification policy, location profile, and all. That file goes into version control. Changes get reviewed in pull requests. Rollbacks are instant.

The key distinction: IaC manages the infrastructure your application runs on. MaC manages the instrumentation that watches that infrastructure. Both belong in the same workflow—and yet, for most teams, monitoring is still the part that gets set up manually, after the deployment, as an afterthought.

That gap is expensive. If a site goes down and the on-call engineer discovers the monitor was configured incorrectly or never created, you're dealing with downtime you weren't watching. With MaC, every configuration change is reviewed before it ships, every monitor is traceable to a commit, and rollbacks happen in one command. So, where do you start?

Here's what Site24x7's Terraform provider covers

Site24x7 is a verified Terraform provider, available on the official Terraform Registry. That verification matters: It means the Site24x7 Terraform provider meets HashiCorp's quality and maintenance standards, is actively maintained by the Site24x7 engineering team, and is open source—so the community can contribute, and you can see exactly what it does.

The Site24x7 provider supports the full range of monitor types you'd use in a real environment:

• Website monitor: HTTP/HTTPS uptime checks
• Web Page Speed monitor: Browser-rendered load time
• REST API monitor: API endpoint health checks
• SSL Certificate monitor: SSL expiry tracking
• DNS Server monitor: DNS resolution checks
• Web Transaction (Browser) monitor: Multi-step user journey testing

Beyond individual monitors, it also covers monitor groups, threshold profiles, notification profiles, location profiles, on-call schedules, IT automation actions, and tags—giving you complete control over your monitoring environment through code.

Setting up the Site24x7 Terraform provider

Refer to our documentation to set up the provider and to create monitors.

Scaling to multiple monitors

For teams managing many endpoints, Terraform's for_each meta-argument lets you deploy multiple monitors from a single resource block—no repetitive configuration required. Define your monitors as a map of objects, each containing the URL, check frequency, and location profile, and reference the map in the resource block. Adding a new endpoint means adding one entry to the map and running terraform apply. Removing one is just as clean—and both operations are tracked in version history. For grouping related monitors, the site24x7_monitor_group resource supports shared alerting and status page displays.

Importing existing monitors into Terraform state

Organizations that have been using Site24x7 manually do not need to start over. The Site24x7 Terraform provider includes an import utility that creates Terraform configuration files from existing monitors. This lets teams move to MaC, step by step, migrating existing monitors into Terraform state without downtime or extra setup.

To import existing monitors, clone the provider repository and run the importer utility. The generated configuration file (utilities/importer/output/imported_configuration.tf ) can be copied directly into your Terraform project. Once imported, the Terraform plan will confirm that the existing monitors are now managed by Terraform and that no changes are pending—meaning your live monitoring state and Terraform state are in sync.

This import-first approach is highly recommended for teams with hundreds of monitors. It avoids the risk of deleting and recreating monitors (which could create gaps in historical data) and enables a smooth transition to full IaC management.

Integrating with CI/CD pipelines

The real payoff of MaC shows up when the workflow is connected to your deployment pipeline. When a developer merges a pull request for a new service, a GitHub Actions or GitLab CI job can run terraform apply automatically—meaning monitoring is live the moment the service is deployed, not added manually sometime later.

Why teams choose Site24x7 for Terraform-managed monitoring

Site24x7 is one of the few monitoring platforms with a verified, actively maintained Terraform provider that covers both uptime monitoring and full observability stack configuration. For teams already using Terraform for infrastructure, adding Site24x7 monitoring to the same workflow means one tool, one workflow, one audit trail—rather than a separate monitoring platform with its own configuration system sitting outside your IaC process.

Best practices for Terraform-managed website monitoring

A few habits that pay back every time:

• Always use environment variables or a secrets vault for OAuth credentials. Never commit them.
• Tag every monitor with managed-by:terraform so it's immediately identifiable in the Site24x7 dashboard.
• Use notification_profile_name and threshold_profile_name by name rather than by ID—configurations are more readable and portable across accounts.
• Pin the provider version in your required_providers block to prevent breaking changes from automatic upgrades.
• Store each Terraform state remotely. Local state in team environments is a reliability risk.
• Run terraform plan before every apply in production. Review destroyed resources carefully—deleting a monitor erases its historical data permanently.
• Separate configurations by environment (dev, staging, production) using Terraform workspaces or separate state files.

Give the automation a try

Start with a single monitor. Validate the workflow. Connect it to your CI/CD pipeline. Then scale.

The investment in setting up MaC pays back every time an incident is caught earlier, a configuration drift is prevented, or a new service ships with its monitoring already live.

When monitoring lives in code, it stops being the thing that gets set up after the fire drill and starts being the thing that prevents it.

• Terraform Registry: Site24x7 provider
• GitHub repository: github.com/site24x7/terraform-provider-site24x7
• API documentation: site24x7.com/help/api
• Start free: 30-day trial, no credit card required

Frequently asked questions

What is the difference between monitoring as code and infrastructure as code?

Infrastructure as code (IaC) manages the servers, networks, and cloud resources your application runs on. Monitoring as code (MaC) manages the observability instrumentation that watches those resources (monitors, alert thresholds, notification policies, and on-call integrations). Both use the same declarative, version-controlled workflow, and both belong in the same CI/CD pipeline.

The practical difference: IaC without MaC means your infrastructure is reproducible, but your visibility into it isn't.

How does the Site24x7 Terraform provider authenticate with the Site24x7 API?

The provider authenticates using OAuth2 credentials: a client ID, client secret, and refresh token, obtained from the Site24x7 API console. For CI/CD pipelines with strict token generation limits, you can configure a pre-generated access token directly in the provider block alongside an access_token_expiry value to avoid expiry issues in long-running pipeline environments.

What types of website monitors can I create with the Site24x7 Terraform provider?

The provider supports standard HTTP/HTTPS uptime monitors, web page speed monitors for browser-rendered performance, REST API monitors for endpoint health checks, SSL certificate expiry monitors, DNS server monitors, and multi-step web transaction browser monitors for testing user journeys—all provisioned, updated, and destroyed through Terraform configuration files.

Can I import existing Site24x7 monitors into Terraform without recreating them?

Yes. The provider includes an official importer utility that reads your existing monitors and generates the corresponding Terraform configuration files. Once you copy the generated configurations into your project and run terraform import, Terraform adopts the existing monitors into its state without modifying or deleting them—preserving all historical data and enabling an incremental migration to MaC with no downtime.

How do I manage multiple website monitors at scale using Terraform?

Use Terraform's for_each meta-argument with a map variable to deploy multiple monitors from a single resource block. Each entry in the map defines the URL, check frequency, and location profile for one monitor. Adding a new endpoint means adding one map entry and running terraform apply—scalable to hundreds of monitors, with all endpoint configurations in a single, auditable file.

What is the best way to integrate Site24x7 Terraform monitoring into a CI/CD pipeline?

Store OAuth credentials as encrypted CI/CD secrets and pass them as environment variables. For each pull request, run terraform plan and post the output as a PR comment for team review. For each merge to main, run terraform apply automatically. Use terraform_remote_state so all pipeline runs share a consistent view of deployed resources.

Does Site24x7 support monitoring from multiple global locations via Terraform?

Yes. Site24x7 monitors from 130+ locations across six continents. In Terraform, you assign a location profile to each monitor using location_profile_name or location_profile_id. You can also use data sources to dynamically fetch available location profiles from the Site24x7 API, keeping configurations portable across accounts and data centers.

What happens to monitoring history when a monitor is deleted and recreated via Terraform?

Historical availability and response-time data is permanently lost when a monitor is destroyed and recreated; this can happen if certain immutable attributes are changed. Terraform handles this issue with a destroy/create cycle. Always review terraform plan output carefully before applying, especially for monitors showing a destroy/create cycle. When migrating existing monitors, use the import workflow rather than recreating them from scratch.

How does Site24x7 Terraform integration compare to using the API directly?

Site24x7's REST API provides full programmatic access, but using it directly requires custom scripts for every operation—creation, update, deletion, and state reconciliation. Terraform provides all of this out of the box: declarative configuration, a built-in state engine, dependency resolution, plan previewing, and native CI/CD integration. For teams already using Terraform for infrastructure, the Site24x7 provider is far more efficient.

Is the Site24x7 Terraform provider open source and actively maintained?

Yes. The provider is open source, hosted at github.com/site24x7/terraform-provider-site24x7 , and maintained by the Site24x7 engineering team. It is a verified provider on the Terraform Registry, meaning it meets HashiCorp's quality and maintenance standards. The team actively accepts community contributions and tracks feature requests through GitHub issues.