75b0202f7f
In #16872 we added support for unix domain sockets, but this required mutating the `Config` when parsing the address so as to remove the port number. In #23785 we fixed a bug where if the configuration was used across multiple clients that mutation would happen multiple times and the address would be incorrectly parsed. When making `alloc log`, `alloc fs`, or `alloc exec` calls where we have line-of-sight to the client, we attempt to make a HTTP API call directly to the client node. So we create a new API client from the same configuration and then set the address. But in this case we copy the private `url` field and that causes the URL parsing to be skipped for the new client. This results in the region always being set to the string literal `"global"` (because of mTLS handling code introduced all the way back in4d3b75d867), unless the user has set the region specifically. This fails with an error "no path to region" when the cluster isn't non-global and requests are sent to a non-leader. Arguably the "right" way of fixing this would be for `ClientConfig` not to change the API client's region to `"global"` in the first place, but as this is a public API and extremely longstanding behavior, it could potentially be a breaking change for some downstream consumers. Instead, we'll avoid copying the private `url` field so that the new address is re-parsed. Fixes: https://github.com/hashicorp/nomad/issues/24635 Fixes: https://github.com/hashicorp/nomad/issues/24609 Ref: https://github.com/hashicorp/nomad/pull/16872 Ref: https://github.com/hashicorp/nomad/pull/23785 Ref:4d3b75d867
Nomad
Nomad is a simple and flexible workload orchestrator to deploy and manage containers (docker, podman), non-containerized applications (executable, Java), and virtual machines (qemu) across on-prem and clouds at scale.
Nomad is supported on Linux, Windows, and macOS. A commercial version of Nomad, Nomad Enterprise, is also available.
- Website: https://developer.hashicorp.com/nomad
- Tutorials: HashiCorp Developer
- Forum: Discuss
Nomad provides several key features:
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Deploy Containers and Legacy Applications: Nomad’s flexibility as an orchestrator enables an organization to run containers, legacy, and batch applications together on the same infrastructure. Nomad brings core orchestration benefits to legacy applications without needing to containerize via pluggable task drivers.
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Simple & Reliable: Nomad runs as a single binary and is entirely self contained - combining resource management and scheduling into a single system. Nomad does not require any external services for storage or coordination. Nomad automatically handles application, node, and driver failures. Nomad is distributed and resilient, using leader election and state replication to provide high availability in the event of failures.
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Device Plugins & GPU Support: Nomad offers built-in support for GPU workloads such as machine learning (ML) and artificial intelligence (AI). Nomad uses device plugins to automatically detect and utilize resources from hardware devices such as GPU, FPGAs, and TPUs.
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Federation for Multi-Region, Multi-Cloud: Nomad was designed to support infrastructure at a global scale. Nomad supports federation out-of-the-box and can deploy applications across multiple regions and clouds.
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Proven Scalability: Nomad is optimistically concurrent, which increases throughput and reduces latency for workloads. Nomad has been proven to scale to clusters of 10K+ nodes in real-world production environments.
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HashiCorp Ecosystem: Nomad integrates seamlessly with Terraform, Consul, Vault for provisioning, service discovery, and secrets management.
Quick Start
Testing
See Developer: Getting Started for instructions on setting up a local Nomad cluster for non-production use.
Optionally, find Terraform manifests for bringing up a development Nomad cluster on a public cloud in the terraform directory.
Production
See Developer: Nomad Reference Architecture for recommended practices and a reference architecture for production deployments.
Documentation
Full, comprehensive documentation is available on the Nomad website: https://developer.hashicorp.com/nomad/docs
Guides are available on HashiCorp Developer.
Roadmap
A timeline of major features expected for the next release or two can be found in the Public Roadmap.
This roadmap is a best guess at any given point, and both release dates and projects in each release are subject to change. Do not take any of these items as commitments, especially ones later than one major release away.
Contributing
See the contributing directory for more developer documentation.