Recording rules

In Yandex Managed Service for Prometheus®, you can use your existing recording rule files. It supports all the fields described in the YAML file specification.

The API is represented by REST resources located at https://monitoring.api.cloud.yandex.net/prometheus/workspaces/<workspace_ID>/extensions/v1/rules. To start executing requests:

1. Specify the ID of your workspace in the URL. You can find the workspace ID in the Monitoring UI under Prometheus.
2. Install cURL.
3. Authenticate in the API.

Creating or replacing a recording rule fileCreating or replacing a recording rule file

1. Create an RFC 4648 Base64 encoding of the file contents:

   cat recording-rule.yaml
   
   # groups:
   #   - name: example
   #     rules:
   #     - record: example
   #       expr: up
   
   base64 -i recording-rule.yaml
   
   # Z3JvdXBzOgogIC0gbmFtZTogZXhhbXBsZQogICAgcnVsZXM6CiAgICAtIHJlY29yZDogZXhhbXBsZQogICAgICBleHByOiB1cA==
   

2. Save the result as a JSON file:

   body.json

   {
       "name": "recording-rules",
       "content" : "Z3JvdXBzOgogIC0gbmFtZTogZXhhbXBsZQogICAgcnVsZXM6CiAgICAtIHJlY29yZDogZXhhbXBsZQogICAgICBleHByOiB1cA=="
   }
   

3. Create or replace a recording rule file:

   export IAM_TOKEN=<IAM_token>
   
   curl \
     --request PUT \
     --header "Content-Type: application/json" \
     --header "Authorization: Bearer ${IAM_TOKEN}" \
     --data "@body.json" \
     "https://monitoring.api.cloud.yandex.net/prometheus/workspaces/<workspace_ID>/extensions/v1/rules"
   

If the request is successful, you will get the 204 HTTP code, if not, the error text.

If any rules or groups of rules are deleted when replacing a file, they will no longer be computed. All new rules and groups of rules will start to be computed.

Getting a list of filesGetting a list of files

Run the following query:

export IAM_TOKEN=<IAM_token>

curl \
  --request GET \
  --header "Authorization: Bearer ${IAM_TOKEN}" \
  "https://monitoring.api.cloud.yandex.net/prometheus/workspaces/<workspace_ID>/extensions/v1/rules"

Response example:

{
  "files": [
    "recording-rules"
  ]
}

Viewing the file contentsViewing the file contents

Run the following query:

export IAM_TOKEN=<IAM_token>

curl \
  --request GET \
  --header "Authorization: Bearer ${IAM_TOKEN}" \
  "https://monitoring.api.cloud.yandex.net/prometheus/workspaces/<workspace_ID>/extensions/v1/rules/recording-rules"

Response example:

{
  "name": "recording-rules",
  "content": "Z3JvdXBzOgogIC0gbmFtZTogZXhhbXBsZQogICAgcnVsZXM6CiAgICAtIHJlY29yZDogZXhhbXBsZQogICAgICBleHByOiB1cA=="
}

Viewing file computation statusViewing file computation status

You can get the computation status for any rule in all file groups by using the snapshots REST resource. Each snapshot contains information about the status, error, rule name, and computation time.

Run the following query:

export IAM_TOKEN=<IAM_token>

curl \
  --request GET \
  --header "Authorization: Bearer ${IAM_TOKEN}" \
  "https://monitoring.api.cloud.yandex.net/prometheus/workspaces/<workspace_ID>/extensions/v1/rules/recording-rules/snapshots"

Response example:

{
  "snapshotByGroup": {
    "example": [
      {
        "state": "OK",
        "error": "",
        "evaluationTimeMs": 21,
        "evaluatedAtTimeEpochMs": 1710490243322,
        "record": "example"
      }
    ]
  }
}

Possible rule states:

• NOT_EVALUATED_YET: File is uploaded but computation has not started yet.
• OK: Computation successful.
• LIMIT_EXCEEDED: Number of time series returned by the rule exceeds the limit specified in the YAML file. For such rules, partial computation result is not saved.
• TIMEOUT: Rule computation timed out.
• UNEXPECTED_RESULT_TYPE: Unexpected computation result, e.g., a string.
• UNKNOWN_ERROR: Generic error not described by any of the above states.

Deleting a fileDeleting a file

Run the following query:

export IAM_TOKEN=<IAM_token>

curl \
  --request DELETE \
  --header "Authorization: Bearer ${IAM_TOKEN}" \
  "https://monitoring.api.cloud.yandex.net/prometheus/workspaces/<workspace_ID>/extensions/v1/rules/recording-rules"

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