Monitoring

Self-hosted monitoring and status page tools give operations teams visibility into infrastructure health without exposing internal architecture details to third-party services. Open source alternatives to Datadog, PagerDuty, and Statuspage -- including Uptime Kuma, Gatus, and Cachet -- provide uptime checking, alerting, and public status pages that run entirely on your infrastructure. Uptime Kuma has become one of the most popular self-hosted monitoring tools with over 60,000 GitHub stars, supporting HTTP, TCP, DNS, and Docker container monitoring with a clean dashboard. The monitoring category is a natural fit for self-hosting because monitoring data reveals your entire infrastructure topology, service dependencies, and failure patterns -- information that competitors or attackers could exploit. SaaS monitoring also creates a circular dependency: if your network connectivity fails, your cloud monitoring tool may be unable to detect or report the outage. Self-hosted monitors running in separate availability zones eliminate this blind spot. Cost is another driver -- Datadog pricing at scale has become a recurring pain point for engineering teams, with monthly bills reaching five or six figures for large deployments. Prometheus and Grafana form the backbone of most self-hosted observability stacks, while tools like Uptime Kuma handle synthetic monitoring with minimal resource requirements. When evaluating self-hosted monitoring, consider the alerting channel support (Slack, PagerDuty, email, webhook), check interval granularity, historical data retention, and whether the tool supports the specific protocols your services use. Running your own monitoring infrastructure ensures that the system watching your systems is fully under your control.