mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
1feb5d04d7
### Describe Your Changes [vmanomaly docs](https://docs.victoriametrics.com/anomaly-detection/) update for changes, introduced in v1.13.0 ### Checklist The following checks are **mandatory**: - [x] My change adheres [VictoriaMetrics contributing guidelines](https://docs.victoriametrics.com/contributing/).
164 lines
7.1 KiB
Markdown
164 lines
7.1 KiB
Markdown
---
|
|
sort: 4
|
|
title: Writer
|
|
weight: 4
|
|
menu:
|
|
docs:
|
|
parent: "vmanomaly-components"
|
|
weight: 4
|
|
aliases:
|
|
- /anomaly-detection/components/writer.html
|
|
---
|
|
|
|
# Writer
|
|
|
|
For exporting data, VictoriaMetrics Anomaly Detection (`vmanomaly`) primarily employs the [VmWriter](#vm-writer), which writes produced anomaly scores **(preserving initial labelset and optionally applying additional ones)** back to VictoriaMetrics. This writer is tailored for smooth data export within the VictoriaMetrics ecosystem.
|
|
|
|
Future updates will introduce additional export methods, offering users more flexibility in data handling and integration.
|
|
|
|
## VM writer
|
|
|
|
### Config parameters
|
|
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>Parameter</th>
|
|
<th>Example</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><code>class</code></td>
|
|
<td><code>"writer.vm.VmWriter" (or "vm" starting from <a href="https://docs.victoriametrics.com/anomaly-detection/changelog/#v1130">v1.13.0</a>)</code></td>
|
|
<td>Name of the class needed to enable writing to VictoriaMetrics or Prometheus. VmWriter is the default option, if not specified.</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>datasource_url</code></td>
|
|
<td><code>"http://localhost:8481/"</code></td>
|
|
<td>Datasource URL address</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>tenant_id</code></td>
|
|
<td><code>"0:0"</code></td>
|
|
<td>For VictoriaMetrics Cluster version only, tenants are identified by accountID or accountID:projectID. See VictoriaMetrics Cluster <a href="https://docs.victoriametrics.com/cluster-victoriametrics/#multitenancy">multitenancy docs</a></td>
|
|
</tr>
|
|
<!-- Additional rows for metric_format -->
|
|
<tr>
|
|
<td rowspan="4"><code>metric_format</code></td>
|
|
<td><code>__name__: "vmanomaly_$VAR"</code></td>
|
|
<td rowspan="4">Metrics to save the output (in metric names or labels). Must have <code>__name__</code> key. Must have a value with <code>$VAR</code> placeholder in it to distinguish between resulting metrics. Supported placeholders:
|
|
<ul>
|
|
<li><code>$VAR</code> -- Variables that model provides, all models provide the following set: {"anomaly_score", "y", "yhat", "yhat_lower", "yhat_upper"}. Description of standard output is <a href="/anomaly-detection/components/models.html#vmanomaly-output">here</a>. Depending on <a href="/anomaly-detection/components/models.html">model type</a> it can provide more metrics, like "trend", "seasonality" etc.</li>
|
|
<li><code>$QUERY_KEY</code> -- E.g. "ingestion_rate".</li>
|
|
</ul>
|
|
Other keys are supposed to be configured by the user to help identify generated metrics, e.g., specific config file name etc.
|
|
More details on metric formatting are <a href="#metrics-formatting">here</a>.
|
|
</td>
|
|
</tr>
|
|
<tr><td><code>for: "$QUERY_KEY"</code></td></tr>
|
|
<tr><td><code>run: "test_metric_format"</code></td></tr>
|
|
<tr><td><code>config: "io_vm_single.yaml"</code></td></tr>
|
|
<!-- End of additional rows -->
|
|
<tr>
|
|
<td><code>import_json_path</code></td>
|
|
<td><code>"/api/v1/import"</code></td>
|
|
<td>Optional, to override the default import path</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>health_path</code></td>
|
|
<td><code>"health"</code></td>
|
|
<td>Absolute or relative URL address where to check the availability of the datasource. Optional, to override the default <code>"/health"</code> path.</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>user</code></td>
|
|
<td><code>"USERNAME"</code></td>
|
|
<td>BasicAuth username</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>password</code></td>
|
|
<td><code>"PASSWORD"</code></td>
|
|
<td>BasicAuth password</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>timeout</code></td>
|
|
<td><code>"5s"</code></td>
|
|
<td>Timeout for the requests, passed as a string. Defaults to "5s"</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>verify_tls</code></td>
|
|
<td><code>"false"</code></td>
|
|
<td>Allows disabling TLS verification of the remote certificate.</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>bearer_token</code></td>
|
|
<td><code>"token"</code></td>
|
|
<td>Token is passed in the standard format with the header: "Authorization: bearer {token}"</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
|
|
Config example:
|
|
|
|
```yaml
|
|
writer:
|
|
class: "vm" # or "writer.vm.VmWriter" until v1.13.0
|
|
datasource_url: "http://localhost:8428/"
|
|
tenant_id: "0:0"
|
|
metric_format:
|
|
__name__: "vmanomaly_$VAR"
|
|
for: "$QUERY_KEY"
|
|
run: "test_metric_format"
|
|
config: "io_vm_single.yaml"
|
|
import_json_path: "/api/v1/import"
|
|
health_path: "health"
|
|
user: "foo"
|
|
password: "bar"
|
|
```
|
|
|
|
### Healthcheck metrics
|
|
|
|
`VmWriter` exposes [several healthchecks metrics](./monitoring.html#writer-behaviour-metrics).
|
|
|
|
### Metrics formatting
|
|
|
|
There should be 2 mandatory parameters set in `metric_format` - `__name__` and `for`.
|
|
|
|
```yaml
|
|
__name__: PREFIX1_$VAR
|
|
for: PREFIX2_$QUERY_KEY
|
|
```
|
|
|
|
* for `__name__` parameter it will name metrics returned by models as `PREFIX1_anomaly_score`, `PREFIX1_yhat_lower`, etc. Vmanomaly output metrics names described [here](/anomaly-detection/components/models.html#vmanomaly-output)
|
|
* for `for` parameter will add labels `PREFIX2_query_name_1`, `PREFIX2_query_name_2`, etc. Query names are set as aliases in config `reader` section in [`queries`](anomaly-detection/components/reader.html#config-parameters) parameter.
|
|
|
|
It is possible to specify other custom label names needed.
|
|
For example:
|
|
|
|
```yaml
|
|
custom_label_1: label_name_1
|
|
custom_label_2: label_name_2
|
|
```
|
|
|
|
Apart from specified labels, output metrics will return **labels inherited from input metrics returned by [queries](/anomaly-detection/components/reader.html#config-parameters)**.
|
|
For example if input data contains labels such as `cpu=1, device=eth0, instance=node-exporter:9100` all these labels will be present in vmanomaly output metrics.
|
|
|
|
So if metric_format section was set up like this:
|
|
|
|
```yaml
|
|
metric_format:
|
|
__name__: "PREFIX1_$VAR"
|
|
for: "PREFIX2_$QUERY_KEY"
|
|
custom_label_1: label_name_1
|
|
custom_label_2: label_name_2
|
|
```
|
|
|
|
It will return metrics that will look like:
|
|
|
|
```yaml
|
|
{__name__="PREFIX1_anomaly_score", for="PREFIX2_query_name_1", custom_label_1="label_name_1", custom_label_2="label_name_2", cpu=1, device="eth0", instance="node-exporter:9100"}
|
|
{__name__="PREFIX1_yhat_lower", for="PREFIX2_query_name_1", custom_label_1="label_name_1", custom_label_2="label_name_2", cpu=1, device="eth0", instance="node-exporter:9100"}
|
|
{__name__="PREFIX1_anomaly_score", for="PREFIX2_query_name_2", custom_label_1="label_name_1", custom_label_2="label_name_2", cpu=1, device="eth0", instance="node-exporter:9100"}
|
|
{__name__="PREFIX1_yhat_lower", for="PREFIX2_query_name_2", custom_label_1="label_name_1", custom_label_2="label_name_2", cpu=1, device="eth0", instance="node-exporter:9100"}
|
|
```
|