hashicorp/nomad

Nomad is a workload orchestrator, a tool that decides where and how to run software across a cluster of servers. It handles deploying, scheduling, and managing applications at scale, whether those applications are packaged in containers (like Docker), run as plain executables, written in Java, or run as virtual machines. The problem it solves is the operational complexity of running many services across many machines. Rather than manually deciding which server runs which application, Nomad handles the placement automatically based on available resources, health checks, and constraints you define. If a node (server) fails, Nomad reschedules the affected workloads automatically. What makes Nomad distinctive is its flexibility: most competing tools are container-only, but Nomad also handles "legacy" applications that aren't containerized, as well as GPU workloads for machine learning. It runs as a single binary with no external coordination service required, which makes it simpler to operate than some alternatives. It supports scaling to clusters of 10,000+ nodes and natively integrates with other HashiCorp tools: Consul for service discovery (finding where services are running), Vault for secrets management (storing API keys and passwords securely), and Terraform for infrastructure provisioning. It supports multi-region and multi-cloud deployments, meaning you can run one Nomad setup that spans servers in multiple data centers or cloud providers. Nomad is written in Go, runs on Linux, Windows, and macOS, and is licensed under BUSL-1.1 (a source-available license with commercial restrictions). A paid enterprise version is also available.