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nomad eval status command reference

The eval status command is used to display information about an existing evaluation. In the case an evaluation could not place all the requested allocations, this command can be used to determine the failure reasons.

Optionally, it can also be invoked in a monitor mode to track an outstanding evaluation. In this mode, logs will be output describing state changes to the evaluation or its associated allocations. The monitor will exit when the evaluation reaches a terminal state.

Usage

nomad eval status [options] <evaluation>

An evaluation ID or prefix must be provided. If there is an exact match, the the status will be shown. Otherwise, a list of matching evaluations and information will be displayed.

If the -monitor flag is passed, an interactive monitoring session will be started in the terminal. It is safe to exit the monitor at any time using ctrl+c. The command will exit when the given evaluation reaches a terminal state (completed or failed). Exit code 0 is returned on successful evaluation, and if there are no scheduling problems. If there are job placement issues encountered (unsatisfiable constraints, resource exhaustion, etc), then the exit code will be 2. Any other errors, including client connection issues or internal errors, are indicated by exit code 1.

Options

  • -monitor: Monitor an outstanding evaluation
  • -verbose: Show full-length IDs, exact timestamps, and all reconciler annotation fields.
  • -json: Output the evaluation in its JSON format. This format will not include placed allocations.
  • -t : Format and display evaluation using a Go template. This format will not include placed allocations.
  • -ui: Open the evaluation in the browser.

Examples

Show the status of an evaluation with related evaluations, successful placements, scheduler annotations, failed placements, and preemptions.

The plan annotations table shows the output of the scheduler's reconciliation stage, which produces a desired set of changes that later stages of the scheduler attempt. The update.max_parallel field or placement failures may result in a difference between these numbers and the updates made to the job. This table will always include the count for allocations to ignore, place, stop, inplace update, and destructively update. It may also include the count of canary allocations or allocations that were rescheduled, migrated, preemptted, reconnected, or disconnected. Any of these counts may overlap so that, for example, an allocation can be both migrated and stopped.

$ nomad eval status 8f6af533
ID                 = 8f6af533
Create Time        = 11s ago
Modify Time        = 10s ago
Status             = complete
Status Description = complete
Type               = service
TriggeredBy        = job-register
Job ID             = example
Namespace          = default
Priority           = 50
Placement Failures = true
Previous Eval      = c324b46f
Next Eval          = <none>
Blocked Eval       = 2b83d3af

Related Evaluations
ID        Priority  Triggered By   Node ID  Status   Description
fd6f3091  50        queued-allocs  <none>   pending  <none>

Plan Annotations
Task Group  Ignore  Place  Stop  InPlace  Destructive  Migrate  Canary  Preemptions
group       0       3      0     0        0            0        0       1

Preempted Allocations
ID        Job ID    Node ID   Task Group  Version  Desired  Status   Created   Modified
116e9046  example1  24c15262  group       0        run      running  1m9s ago  2s ago

Placed Allocations
ID        Node ID   Task Group  Version  Desired  Status   Created  Modified
b7e298fa  24c15262  web         2        run      running  10s ago  2s ago
108841a9  41f70903  web         2        run      pending  3s ago   1s ago
4869a26d  d372b337  web         2        run      pending  4s ago   0s ago

Failed Placements
Task Group "web" (failed to place 1 allocation):
  * Constraint "${attr.kernel.name} = linux": 2 nodes excluded by filter
  * Resources exhausted on 2 nodes
  * Dimension "memory" exhausted on 2 nodes

Evaluation "2b83d3af" waiting for additional capacity to place remainder

Monitor an existing evaluation

$ nomad eval status -monitor 8262bc83
==> Monitoring evaluation "8262bc83"
    Allocation "bd6bd0de" created: node "6f299da5", group "group1"
    Evaluation status changed: "pending" -> "complete"
==> Evaluation "8262bc83" finished with status "complete"

General options

  • -address=<addr>: The address of the Nomad server. Overrides the NOMAD_ADDR environment variable if set. Defaults to http://127.0.0.1:4646.

  • -region=<region>: The region of the Nomad server to forward commands to. Overrides the NOMAD_REGION environment variable if set. Defaults to the Agent's local region.

  • -namespace=<namespace>: The target namespace for queries and actions bound to a namespace. Overrides the NOMAD_NAMESPACE environment variable if set. If set to '*', subcommands which support this functionality query all namespaces authorized to user. Defaults to the "default" namespace.

  • -no-color: Disables colored command output. Alternatively, NOMAD_CLI_NO_COLOR may be set. This option takes precedence over -force-color.

  • -force-color: Forces colored command output. This can be used in cases where the usual terminal detection fails. Alternatively, NOMAD_CLI_FORCE_COLOR may be set. This option has no effect if -no-color is also used.

  • -ca-cert=<path>: Path to a PEM encoded CA cert file to use to verify the Nomad server SSL certificate. Overrides the NOMAD_CACERT environment variable if set.

  • -ca-path=<path>: Path to a directory of PEM encoded CA cert files to verify the Nomad server SSL certificate. If both -ca-cert and -ca-path are specified, -ca-cert is used. Overrides the NOMAD_CAPATH environment variable if set.

  • -client-cert=<path>: Path to a PEM encoded client certificate for TLS authentication to the Nomad server. Must also specify -client-key. Overrides the NOMAD_CLIENT_CERT environment variable if set.

  • -client-key=<path>: Path to an unencrypted PEM encoded private key matching the client certificate from -client-cert. Overrides the NOMAD_CLIENT_KEY environment variable if set.

  • -tls-server-name=<value>: The server name to use as the SNI host when connecting via TLS. Overrides the NOMAD_TLS_SERVER_NAME environment variable if set.

  • -tls-skip-verify: Do not verify TLS certificate. This is highly not recommended. Verification will also be skipped if NOMAD_SKIP_VERIFY is set.

  • -token: The SecretID of an ACL token to use to authenticate API requests with. Overrides the NOMAD_TOKEN environment variable if set.