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open-nomad/website/content/api-docs/evaluations.mdx
Luiz Aoqui 15089f055f
api: add related evals to eval details (#12305) 
The `related` query param is used to indicate that the request should
return a list of related (next, previous, and blocked) evaluations.

Co-authored-by: Jasmine Dahilig <jasmine@hashicorp.com>
2022-03-17 13:56:14 -04:00

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---
layout: api
page_title: Evaluations - HTTP API
description: The /evaluation are used to query for and interact with evaluations.
---
# Evaluations HTTP API
The `/evaluation` endpoints are used to query for and interact with evaluations.
## List Evaluations
This endpoint lists all evaluations.
| Method | Path | Produces |
| ------ | ----------------- | ------------------ |
| `GET` | `/v1/evaluations` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs#blocking-queries) and
[required ACLs](/api-docs#acls).
| Blocking Queries | ACL Required |
| ---------------- | -------------------- |
| `YES` | `namespace:read-job` |
### Parameters
- `prefix` `(string: "")`- Specifies a string to filter evaluations based on an
ID prefix. Because the value is decoded to bytes, the prefix must have an
even number of hexadecimal characters (0-9a-f). This is specified as a query
string parameter and and is used before any `filter` expression is applied.
- `next_token` `(string: "")` - This endpoint supports paging. The
`next_token` parameter accepts a string which is the `ID` field of
the next expected evaluation. This value can be obtained from the
`X-Nomad-NextToken` header from the previous response.
- `per_page` `(int: 0)` - Specifies a maximum number of evaluations to
return for this request. If omitted, the response is not
paginated. The `ID` of the last evaluation in the response can be
used as the `last_token` of the next request to fetch additional
pages.
- `filter` `(string: "")` - Specifies the [expression](/api-docs#filtering)
used to filter the results. Consider using pagination or a query parameter to
reduce resource used to serve the request.
- `job` `(string: "")` - Filter the list of evaluations to a specific
job ID.
- `status` `(string: "")` - Filter the list of evaluations to a
specific evaluation status (one of `blocked`, `pending`, `complete`,
`failed`, or `canceled`).
- `namespace` `(string: "default")` - Specifies the target namespace.
Specifying `*` will return all evaluations across all authorized namespaces.
This parameter is used before any `filter` expression is applied.
- `reverse` `(bool: false)` - Specifies the list of returned evaluations should
be sorted in the reverse order. By default evaluations are returned sorted in
chronological order (older evaluations first), or in lexicographical order by
their ID if the `prefix` query parameter is used.
### Sample Request
```shell-session
$ curl \
https://localhost:4646/v1/evaluations
```
```shell-session
$ curl \
https://localhost:4646/v1/evaluations?prefix=25ba81
```
### Sample Response
```json
[
{
"ID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577",
"Priority": 50,
"Type": "service",
"TriggeredBy": "job-register",
"JobID": "example",
"JobModifyIndex": 52,
"NodeID": "",
"NodeModifyIndex": 0,
"Status": "complete",
"StatusDescription": "",
"Wait": 0,
"NextEval": "",
"PreviousEval": "",
"BlockedEval": "",
"FailedTGAllocs": null,
"ClassEligibility": null,
"EscapedComputedClass": false,
"AnnotatePlan": false,
"SnapshotIndex": 53,
"QueuedAllocations": {
"cache": 0
},
"CreateIndex": 53,
"ModifyIndex": 55
}
]
```
## Read Evaluation
This endpoint reads information about a specific evaluation by ID.
| Method | Path | Produces |
| ------ | ------------------------- | ------------------ |
| `GET` | `/v1/evaluation/:eval_id` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs#blocking-queries) and
[required ACLs](/api-docs#acls).
| Blocking Queries | ACL Required |
| ---------------- | -------------------- |
| `YES` | `namespace:read-job` |
### Parameters
- `:eval_id` `(string: <required>)`- Specifies the UUID of the evaluation. This
must be the full UUID, not the short 8-character one. This is specified as
part of the path.
- `related` `(bool: false)` - Specifies if related evaluations should be
returned. Related evaluations are the ones that can be reached by following
the trail of IDs for `NextEval`, `PreviousEval`, and `BlockedEval`. This is
specified as a query parameter.
### Sample Request
```shell-session
$ curl \
https://localhost:4646/v1/evaluation/2deb5f06-a100-f01a-3316-5e501a4965e7?related=true
```
### Sample Response
```json
{
"CreateIndex": 28,
"CreateTime": 1647394818583344000,
"FailedTGAllocs": {
"cache": {
"AllocationTime": 4111,
"ClassExhausted": null,
"ClassFiltered": null,
"CoalescedFailures": 0,
"ConstraintFiltered": null,
"DimensionExhausted": null,
"NodesAvailable": {
"dc1": 0
},
"NodesEvaluated": 0,
"NodesExhausted": 0,
"NodesFiltered": 0,
"QuotaExhausted": null,
"ResourcesExhausted": null,
"ScoreMetaData": null,
"Scores": null
}
},
"ID": "2deb5f06-a100-f01a-3316-5e501a4965e7",
"JobID": "example",
"ModifyIndex": 28,
"ModifyTime": 1647394818583344000,
"Namespace": "default",
"PreviousEval": "0f98f7ea-59ae-4d90-d9bd-b8ce80b9e100",
"Priority": 50,
"RelatedEvals": [
{
"BlockedEval": "2deb5f06-a100-f01a-3316-5e501a4965e7",
"CreateIndex": 27,
"CreateTime": 1647394818582736000,
"DeploymentID": "79ae0a49-acf6-0fcf-183f-8646f3167b88",
"ID": "0f98f7ea-59ae-4d90-d9bd-b8ce80b9e100",
"JobID": "example",
"ModifyIndex": 30,
"ModifyTime": 1647394818583565000,
"Namespace": "default",
"NextEval": "",
"NodeID": "",
"PreviousEval": "",
"Priority": 50,
"Status": "complete",
"StatusDescription": "",
"TriggeredBy": "node-drain",
"Type": "service",
"WaitUntil": null
}
],
"SnapshotIndex": 27,
"Status": "blocked",
"StatusDescription": "created to place remaining allocations",
"TriggeredBy": "queued-allocs",
"Type": "service"
}
```
## List Allocations for Evaluation
This endpoint lists the allocations created or modified for the given
evaluation.
| Method | Path | Produces |
| ------ | ------------------------------------- | ------------------ |
| `GET` | `/v1/evaluation/:eval_id/allocations` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs#blocking-queries) and
[required ACLs](/api-docs#acls).
| Blocking Queries | ACL Required |
| ---------------- | -------------------- |
| `YES` | `namespace:read-job` |
### Parameters
- `:eval_id` `(string: <required>)`- Specifies the UUID of the evaluation. This
must be the full UUID, not the short 8-character one. This is specified as
part of the path.
### Sample Request
```shell-session
$ curl \
https://localhost:4646/v1/evaluation/5456bd7a-9fc0-c0dd-6131-cbee77f57577/allocations
```
### Sample Response
```json
[
{
"ID": "a8198d79-cfdb-6593-a999-1e9adabcba2e",
"EvalID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577",
"Name": "example.cache[0]",
"NodeID": "fb2170a8-257d-3c64-b14d-bc06cc94e34c",
"JobID": "example",
"TaskGroup": "cache",
"DesiredStatus": "run",
"DesiredDescription": "",
"ClientStatus": "running",
"ClientDescription": "",
"TaskStates": {
"redis": {
"State": "running",
"Failed": false,
"Events": [
{
"Type": "Received",
"Time": 1495747371795703800,
"FailsTask": false,
"RestartReason": "",
"SetupError": "",
"DriverError": "",
"ExitCode": 0,
"Signal": 0,
"Message": "",
"KillTimeout": 0,
"KillError": "",
"KillReason": "",
"StartDelay": 0,
"DownloadError": "",
"ValidationError": "",
"DiskLimit": 0,
"FailedSibling": "",
"VaultError": "",
"TaskSignalReason": "",
"TaskSignal": "",
"DriverMessage": ""
},
{
"Type": "Driver",
"Time": 1495747371798867200,
"FailsTask": false,
"RestartReason": "",
"SetupError": "",
"DriverError": "",
"ExitCode": 0,
"Signal": 0,
"Message": "",
"KillTimeout": 0,
"KillError": "",
"KillReason": "",
"StartDelay": 0,
"DownloadError": "",
"ValidationError": "",
"DiskLimit": 0,
"FailedSibling": "",
"VaultError": "",
"TaskSignalReason": "",
"TaskSignal": "",
"DriverMessage": "Downloading image redis:3.2"
},
{
"Type": "Started",
"Time": 1495747379525667800,
"FailsTask": false,
"RestartReason": "",
"SetupError": "",
"DriverError": "",
"ExitCode": 0,
"Signal": 0,
"Message": "",
"KillTimeout": 0,
"KillError": "",
"KillReason": "",
"StartDelay": 0,
"DownloadError": "",
"ValidationError": "",
"DiskLimit": 0,
"FailedSibling": "",
"VaultError": "",
"TaskSignalReason": "",
"TaskSignal": "",
"DriverMessage": ""
}
]
}
},
"CreateIndex": 54,
"ModifyIndex": 57,
"CreateTime": 1495747371794276400
}
]
```
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