»Nomad Enterprise Licensing
Licensing capabilities were added to Nomad Enterprise v0.12.0. Each server in the cluster must have its own license. Nomad Enterprise can be downloaded from the releases site.
Note: A Nomad Enterprise cluster cannot be downgraded to the open source version of Nomad. Servers running the open source version of Nomad will panic if they are joined to a Nomad Enterprise cluster. See issue gh-9958 for more details.
Nomad Enterprise license have an expiration time. You can read the license on
a server with the
nomad license get command:
$ nomad license get Product = nomad License Status = valid License ID = eaaecbd5-b598-4fa4-b649-bb234bf49fa3 Customer ID = ae94bdd0-39bf-4c58-bf80-8a9468b0467c Issued At = 2021-03-29 14:47:29.024191 -0400 EDT Expires At = 2021-03-29 20:47:29.024191 -0400 EDT Datacenter = * Modules: governance-policy multicluster-and-efficiency Licensed Features: Automated Upgrades Enhanced Read Scalability Redundancy Zones Namespaces Resource Quotas Audit Logging Sentinel Policies Multiregion Deployments Automated Backups Multi-Vault Namespaces Dynamic Application Sizing
As a Nomad Enterprise license approaches its expiration time, Nomad servers will periodically log a warning message about the approaching expiration. Below shows log excerpts of the warnings.
2021-03-29T15:02:28.100-0400 [WARN] nomad.licensing: license expiring: time_left=5m0s 2021-03-29T15:03:28.103-0400 [WARN] nomad.licensing: license expiring: time_left=4m0s 2021-03-29T15:04:28.106-0400 [WARN] nomad.licensing: license expiring: time_left=3m0s 2021-03-29T15:05:28.109-0400 [WARN] nomad.licensing: license expiring: time_left=2m0s 2021-03-29T15:06:28.112-0400 [WARN] nomad.licensing: license expiring: time_left=1m0s 2021-03-29T15:07:28.114-0400 [WARN] nomad.licensing: license expiring: time_left=0s 2021-03-29T15:07:58.104-0400 [ERROR] nomad.licensing: license expired, please update license: error="invalid license or license is expired"
When the license expires, enterprise functionality will become limited. Only read operations on enterprise endpoints will be supported, and write operations will return an error.
Note that if the server is restarted with an expired license, it will immediately stop.
»Configuring the License
See the server license configuration reference documentation on all the options to set an enterprise license. Nomad will load the license file from disk or environment when it starts.
Note: An Enterprise license tutorial is available to help you install the license on the server.
In order to immediately alert operators of a bad configuration setting, if a license configuration option is an invalid or expired license, the Nomad server will exit with an error.
NOMAD_LICENSE=misconfigured nomad agent -dev ==> No configuration files loaded ==> Starting Nomad agent... ==> Error starting agent: server setup failed: failed to initialize enterprise licensing: a file license was configured but the license is invalid: error decoding version: expected integer
See the License commands for more information on interacting with the Enterprise License.