Nomad Enterprise adds collaboration, operational, and governance capabilities to Nomad. Nomad Enterprise is available as a base Platform package with an optional Governance & Policy add-on module.
Nomad Enterprise requires a license to run. When a Enterprise server first starts it will be set with a temporary license that includes all features. This will be valid for 6 hours and allows users to test enterprise features and provide enough time for operators to apply their enterprise license.
If a server is never given a valid license and the temporary license expires, the server will shutdown. If a valid (non-temporary) license expires, the cluster will continue to function, but write operations to enterprise features will be disabled.
See the [License commands](/docs/commands/license) for more information on interacting with the Enterprise License.
Nomad Enterprise Platform enables operators to easily upgrade Nomad as well as enhances performance and availability through Advanced Autopilot features such as Automated Upgrades, Enhanced Read Scalability, and Redundancy Zones.
Automated Upgrades allows operators to deploy a complete cluster of new servers and then simply wait for the upgrade to complete. As the new servers join the cluster, server logic checks the version of each Nomad server node. If the version is higher than the version on the current set of voters, it will avoid promoting the new servers to voters until the number of new servers matches the number of existing servers at the previous version. Once the numbers match, Nomad will begin to promote new servers and demote old ones.
See the [Autopilot - Upgrade Migrations](https://learn.hashicorp.com/nomad/operating-nomad/autopilot#upgrade-migrations) documentation for a thorough overview.
Automated Backups allows operators to run the snapshot agent as a long-running daemon process or in a one-shot mode from a batch job. The agent takes snapshots of the state of the Nomad servers and saves them locally, or pushes them to an optional remote storage service, such as Amazon S3.
This capability provides an enterprise solution for backup and restoring the state of Nomad servers within an environment in an automated manner. These snapshots are atomic and point-in-time.
See the [Operator Snapshot agent](https://www.nomadproject.io/docs/commands/operator/snapshot-agent) documentation for a thorough overview.
This feature enables an operator to introduce non-voting server nodes to a Nomad cluster. Non-voting servers will receive the replication stream but will not take part in quorum (required by the leader before log entries can be committed). Adding explicit non-voters will scale reads and scheduling without impacting write latency.
See the [Autopilot - Read Scalability](https://learn.hashicorp.com/nomad/operating-nomad/autopilot#server-read-and-scheduling-scaling) documentation for a thorough overview.
Redundancy Zones enables an operator to deploy a non-voting server as a hot standby server on a per availability zone basis. For example, in an environment with three availability zones an operator can run one voter and one non-voter in each availability zone, for a total of six servers. If an availability zone is completely lost, only one voter will be lost, so the cluster remains available. If a voter is lost in an availability zone, Nomad will promote the non-voter to a voter automatically, putting the hot standby server into service quickly.
See the [Autopilot - Redundancy Zones](https://learn.hashicorp.com/nomad/operating-nomad/autopilot#redundancy-zones) documentation for a thorough overview.
Governance & Policy features are part of an add-on module that enables an organization to securely operate Nomad at scale across multiple teams through features such as Audit Logging, Namespaces, Resource Quotas, Sentinel Policies, and Preemption.
Secure clusters with enhanced risk management and operational traceability to fulfill compliance requirements. This Enterprise feature provides administrators with a complete set of records for all user-issued actions in Nomad.
With Audit Logging, enterprises can now proactively identify access anomalies, ensure enforcement of their security policies, and diagnose cluster behavior by viewing preceding user operations. Designed as an HTTP API based audit logging system, each audit event is captured with relevant request and response information in a JSON format that is easily digestibile and familiar to operators.
Namespaces enable multiple teams to safely use a shared multi-region Nomad environment and reduce cluster fleet size. In Nomad Enterprise, a shared cluster can be partitioned into multiple namespaces which allow jobs and their associated objects to be isolated from each other and other users of the cluster.
Namespaces enhance the usability of a shared cluster by isolating teams from the jobs of others, by providing fine grain access control to jobs when coupled with ACLs, and by preventing bad actors from negatively impacting the whole cluster.
Resource Quotas enable an operator to limit resource consumption across teams or projects to reduce waste and align budgets. In Nomad Enterprise, operators can define quota specifications and apply them to namespaces. When a quota is attached to a namespace, the jobs within the namespace may not consume more resources than the quota specification allows.
In Nomad Enterprise, operators can create Sentinel policies for fine-grained policy enforcement. Sentinel policies build on top of the ACL system and allow operators to define policies such as disallowing jobs to be submitted to production on Fridays or only allowing users to run jobs that use pre-authorized Docker images. Sentinel policies are defined as code, giving operators considerable flexibility to meet compliance requirements.
Cross-Namespace Queries allows operators to query jobs and allocations across all namespaces for faster operator debugging and visibility in multi-tenant clusters. This enterprise feature accelerates and simplifies the debugging process by allowing operators to easily locate faulty jobs and allocations from developers.
See the individual Nomad CLI command documentation (e.g., [alloc exec](https://www.nomadproject.io/docs/commands/alloc/exec#namespace)) for more information.
