377 lines
10 KiB
Plaintext
377 lines
10 KiB
Plaintext
---
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layout: api
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page_title: Recommendations - HTTP API
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sidebar_title: Recommendations
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description: >-
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The /recommendation endpoints are used to query for and interact with Dynamic
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Application Sizing recommendations.
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---
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# Recommendation HTTP API
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The `/recommendation` endpoints are used to query and interact with Dynamic
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Application Sizing recommendations.
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<EnterpriseAlert>
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This API endpoint and functionality only exists in
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Nomad Enterprise. This is not present in the open source version of Nomad.
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</EnterpriseAlert>
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## List Recommendations
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This endpoint lists all the currently available recommendations and provides
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optional filtering of that list.
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| Method | Path | Produces |
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| ------ | --------------------- | ------------------ |
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| `GET` | `/v1/recommendations` | `application/json` |
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The table below shows this endpoint's support for
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[blocking queries](/api-docs#blocking-queries) and
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[required ACLs](/api-docs#acls).
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| Blocking Queries | ACL Required |
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| ---------------- | ----------------------------------------------------------------------------------- |
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| `YES` | `namespace:read-job` or `namespace:submit-recommendation` or `namespace:submit-job` |
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### Parameters
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- `group` `(string: "")` - Specifies the task group name to filter within a job. If
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specified, the `job` parameter must also be specified.
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- `job` `(string: "")` - Specifies the job ID to filter the recommendations list by.
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- `namespace` `(string: "default")` - Specifies the namespace to search. Specifying
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`*` would return all recommendations across all the authorized namespaces.
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- `task` `(string: "")` - Specifies the task name to filter within a job and task
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group. If specified, the `job` and `group` query parameters must also be
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specified.
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### Sample Request
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```shell-session
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$ curl \
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https://localhost:4646/v1/recommendations
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```
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```shell-session
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$ curl \
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https://localhost:4646/v1/recommendations?namespace=*
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```
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```shell-session
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$ curl \
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https://localhost:4646/v1/recommendations?namespace=*&job=example&group=cache&task=redis
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```
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### Sample Response
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```json
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[
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{
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"ID": "cb80a13d-20d8-fb05-db3f-4ea0fe667b1b",
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"Region": "global",
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"Namespace": "default",
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"JobID": "example",
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"JobVersion": 0,
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"Group": "cache",
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"Task": "redis",
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"Resource": "MemoryMB",
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"Value": 10,
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"Current": 200,
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"Meta": {
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"nomad_autoscaler.count.capped": true,
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"nomad_autoscaler.count.original": 6,
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"nomad_autoscaler.reason_history": [],
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"nomad_policy_id": "c355d0ec-7aa1-2604-449d-4ec79c813d2c",
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"num_evaluated_windows": 1148,
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"window_size": 300000000000
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},
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"Stats": {
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"min": 2.6640625,
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"p99": 6.51171875,
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"max": 6.515625,
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"mean": 4.816847859995009
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},
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"EnforceVersion": false,
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"SubmitTime": 1603372587714807000,
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"CreateIndex": 5193,
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"ModifyIndex": 10437
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},
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{
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"ID": "fdd2b5f1-e6ad-110e-75b9-8f9410e1d8ab",
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"Region": "global",
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"Namespace": "default",
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"JobID": "example",
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"JobVersion": 0,
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"Group": "cache",
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"Task": "redis",
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"Resource": "CPU",
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"Value": 57,
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"Current": 500,
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"Meta": {
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"window_size": 300000000000,
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"nomad_policy_id": "b2c64295-4315-2fdc-6158-a27156808729",
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"num_evaluated_windows": 1117
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},
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"Stats": {
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"min": 0,
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"p99": 50,
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"max": 63.46186447143555,
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"mean": 0.3649455045779875
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},
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"EnforceVersion": false,
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"SubmitTime": 1603372287894356000,
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"CreateIndex": 5275,
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"ModifyIndex": 10419
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}
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]
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```
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## Read Recommendation
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This endpoint reads information about a specific recommendation.
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| Method | Path | Produces |
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| ------ | --------------------------------------- | ------------------ |
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| `GET` | `/v1/recommendation/:recommendation_id` | `application/json` |
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The table below shows this endpoint's support for
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[blocking queries](/api-docs#blocking-queries) and
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[required ACLs](/api-docs#acls).
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| Blocking Queries | ACL Required |
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| ---------------- | -------------------- |
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| `YES` | `namespace:read-job` |
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### Parameters
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- `:recommendation_id` `(string: <required>)`- Specifies the recommendation ID to
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query. This is specified as part of the path.
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### Sample Request
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```shell-session
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$ curl \
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https://localhost:4646/v1/recommendation/cb80a13d-20d8-fb05-db3f-4ea0fe667b1b
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```
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### Sample Response
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```json
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{
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"ID": "cb80a13d-20d8-fb05-db3f-4ea0fe667b1b",
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"Region": "global",
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"Namespace": "default",
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"JobID": "example",
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"JobVersion": 0,
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"Group": "cache",
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"Task": "redis",
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"Resource": "MemoryMB",
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"Value": 10,
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"Current": 200,
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"Meta": {
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"nomad_autoscaler.count.original": 6,
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"nomad_autoscaler.reason_history": [],
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"nomad_policy_id": "c355d0ec-7aa1-2604-449d-4ec79c813d2c",
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"num_evaluated_windows": 1148,
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"window_size": 300000000000,
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"nomad_autoscaler.count.capped": true
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},
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"Stats": {
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"min": 2.6640625,
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"p99": 6.51171875,
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"max": 6.515625,
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"mean": 4.816847859995009
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},
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"EnforceVersion": false,
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"SubmitTime": 1603372587714807000,
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"CreateIndex": 5193,
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"ModifyIndex": 10437
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}
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```
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## Apply and Dismiss Recommendations
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This endpoint is used to apply and dismiss recommendations.
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| Method | Path | Produces |
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| ------ | --------------------------- | ------------------ |
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| `POST` | `/v1/recommendations/apply` | `application/json` |
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The table below shows this endpoint's support for
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[blocking queries](/api-docs#blocking-queries) and
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[required ACLs](/api-docs#acls).
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| Blocking Queries | ACL Required |
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| ---------------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
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| `NO` | `namespace:submit-job` with `namespace:sentinel-override` if `PolicyOverride` set |
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### Parameters
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- `Apply` `(array<string>: nil)` - Specifies a set of recommendation IDs to be
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applied. This results in Nomad applying the recommendation to the job
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specification and performing a job register.
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- `Dismiss` `(array<string>: nil)` - Specifies a set of recommendation IDs to be
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dismissed. This results in Nomad deleting them from the state store.
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- `PolicyOverride` `(bool: false)` - If set, any soft mandatory Sentinel policies
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will be overridden. This allows a recommendation to be applied when it would be
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denied by a policy.
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### Sample Payload
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```json
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{
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"Apply": ["cb80a13d-20d8-fb05-db3f-4ea0fe667b1b"]
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}
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```
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### Sample Request
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```shell-session
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$ curl \
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--request POST \
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--data @payload.json \
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https://localhost:4646/v1/recommendations/apply
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```
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### Sample Response
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```json
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{
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"Errors": [],
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"LastIndex": 0,
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"RequestTime": 0,
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"UpdatedJobs": [
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{
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"EvalCreateIndex": 51,
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"EvalID": "3c91a755-f314-e2fb-500b-437ad08e13ea",
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"JobID": "example",
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"JobModifyIndex": 51,
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"Namespace": "default",
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"Recommendations": [
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"cb80a13d-20d8-fb05-db3f-4ea0fe667b1b"
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],
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"Warnings": ""
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}
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]
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}
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```
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## Create or Update a Recommendation
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This endpoint is used to create or update a recommendation.
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| Method | Path | Produces |
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| ------ | -------------------- | ------------------ |
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| `POST` | `/v1/recommendation` | `application/json` |
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The table below shows this endpoint's support for
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[blocking queries](/api-docs#blocking-queries) and
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[required ACLs](/api-docs#acls).
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| Blocking Queries | ACL Required |
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| ---------------- | ----------------------------------------------------------- |
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| `NO` | `namespace:submit-recommendation` or `namespace:submit-job` |
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### Parameters
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- `ID` `(string: "")` - The ID of an existing recommendation to update.
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- `Region` `(string: "")`- The Nomad region identifier which contains the job
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that the recommendation is for. If omitted, this defaults to that of the Nomad
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agent.
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- `Namespace` `(string: "")`- The namespace within which the target job is running
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within. If omitted, this defaults to `default`.
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- `JobID` `(string: <required>)`- The job ID which this recommendation is for.
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- `Group` `(string: <required>)`- The task group name within the job which this
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recommendation is for.
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- `Task` `(string: <required>)`- The task name within the task group which this
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recommendation is for.
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- `Resource` `(string: <required>)`- The resource that the recommendation is for.
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Possible values are `CPU` and `MemoryMB`.
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- `Value` `(int: <required>)`- The value recommendation for the resource. This
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must met the minimum requirements which are `1` for `CPU` and `10` for `MemoryMB`.
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- `Meta` `(map<string|...>: nil)`- JSON block that is persisted as part of the
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recommendation providing arbitrary, useful information.
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- `Stats` `(map<string|float64>: nil)` - A mapping of statistics that are persisted
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as part of the recommendation providing insight into the recommendation
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calculation.
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- `EnforceVersion` `(bool: false)`- Indicates that the recommendation is only valid
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for the current version of the job. Subsequent job updates will automatically
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dismiss this recommendation.
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### Sample Payload
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```json
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{
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"Region": "global",
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"Namespace": "default",
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"JobID": "example",
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"Group": "cache",
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"Task": "redis",
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"Resource": "MemoryMB",
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"Value": 512,
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"Meta": {
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"nomad_policy_id": "c355d0ec-7aa1-2604-449d-4ec79c813d2c"
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},
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"Stats": {
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"min": 2.6640625,
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"p99": 6.51171875,
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"max": 6.515625,
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"mean": 4.816847859995009
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}
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}
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```
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### Sample Request
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```shell-session
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$ curl \
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--request POST \
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--data @payload.json \
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https://localhost:4646/v1/recommendation
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```
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### Sample Response
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```json
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{
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"CreateIndex": 22,
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"Current": 256,
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"EnforceVersion": false,
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"Group": "cache",
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"ID": "47c97404-918f-8b19-873b-36d802f16f23",
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"JobID": "example",
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"JobVersion": 0,
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"Meta": {
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"nomad_policy_id": "c355d0ec-7aa1-2604-449d-4ec79c813d2c"
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},
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"ModifyIndex": 25,
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"Namespace": "default",
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"Region": "global",
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"Resource": "MemoryMB",
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"Stats": {
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"mean": 4.816847859995009,
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"min": 2.6640625,
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"p99": 6.51171875,
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"max": 6.515625
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},
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"SubmitTime": 1603444202372926000,
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"Task": "redis",
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"Value": 512
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}
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```
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