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### Describe Your Changes
Updates and cross-references for `preset` mode of `vmanomaly` [in
docs](https://docs.victoriametrics.com/anomaly-detection/presets/)
### Checklist
The following checks are **mandatory**:
- [x] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).
(cherry picked from commit 2184c0c730)
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92 lines
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---
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title: Components
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weight: 2
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menu:
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docs:
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identifier: "vmanomaly-components"
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parent: "anomaly-detection"
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weight: 2
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aliases:
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- /anomaly-detection/components/
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- /anomaly-detection/components/index.html
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---
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# Components
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This chapter describes different components, that correspond to respective sections of a config to launch VictoriaMetrics Anomaly Detection (or simply [`vmanomaly`](/anomaly-detection/overview.html)) service:
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- [Model(s) section](models.html) - Required
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- [Reader section](reader.html) - Required
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- [Scheduler(s) section](scheduler.html) - Required
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- [Writer section](writer.html) - Required
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- [Monitoring section](monitoring.html) - Optional
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> **Note**: starting from [v1.7.0](/anomaly-detection/CHANGELOG#v172), once the service starts, automated config validation is performed. Please see container logs for errors that need to be fixed to create fully valid config, visiting sections above for examples and documentation.
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> **Note**: starting from [v1.13.0](/anomaly-detection/CHANGELOG#v1130), components' class can be referenced by a short alias instead of a full class path - i.e. `model.zscore.ZscoreModel` becomes `zscore`, `reader.vm.VmReader` becomes `vm`, `scheduler.periodic.PeriodicScheduler` becomes `periodic`, etc. Please see according sections for the details.
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> **Note:** Starting from [v1.13.0](/anomaly-detection/CHANGELOG#v1130) `preset` modes are available for `vmanomaly`. Please find the guide [here](/anomaly-detection/presets/).
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Below, you will find an example illustrating how the components of `vmanomaly` interact with each other and with a single-node VictoriaMetrics setup.
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> **Note**: [Reader](/anomaly-detection/components/reader.html#vm-reader) and [Writer](/anomaly-detection/components/writer.html#vm-writer) also support [multitenancy](/Cluster-VictoriaMetrics.html#multitenancy), so you can read/write from/to different locations - see `tenant_id` param description.
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<img alt="vmanomaly-components" src="vmanomaly-components.webp" width="800px"/>
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Here's a minimalistic full config example, demonstrating many-to-many configuration (actual for [latest version](/anomaly-detection/CHANGELOG/)):
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```yaml
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# how and when to run the models is defined by schedulers
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# https://docs.victoriametrics.com/anomaly-detection/components/scheduler/
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schedulers:
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periodic_1d: # alias
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class: 'periodic' # scheduler class
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infer_every: "30s"
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fit_every: "10m"
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fit_window: "24h"
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periodic_1w:
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class: 'periodic'
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infer_every: "15m"
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fit_every: "1h"
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fit_window: "7d"
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# what model types and with what hyperparams to run on your data
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# https://docs.victoriametrics.com/anomaly-detection/components/models/
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models:
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zscore: # alias
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class: 'zscore' # model class
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z_threshold: 3.5
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provide_series: ['anomaly_score'] # what series to produce
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queries: ['host_network_receive_errors'] # what queries to run particular model on
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schedulers: ['periodic_1d'] # will be attached to 1-day schedule, fit every 10m and infer every 30s
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prophet: # alias
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class: 'prophet'
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provide_series: ['anomaly_score', 'yhat', 'yhat_lower', 'yhat_upper']
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queries: ['cpu_seconds_total']
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schedulers: ['periodic_1w'] # will be attached to 1-week schedule, fit every 1h and infer every 15m
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args: # model-specific arguments
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interval_width: 0.98
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# where to read data from
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# https://docs.victoriametrics.com/anomaly-detection/components/reader/
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reader:
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datasource_url: "http://victoriametrics:8428/"
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tenant_id: "0:0"
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class: 'vm'
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sampling_period: "30s" # what data resolution of your data to have
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queries: # aliases to MetricsQL expressions
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cpu_seconds_total: 'avg(rate(node_cpu_seconds_total[5m])) by (mode)'
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host_network_receive_errors: 'rate(node_network_receive_errs_total[3m]) / rate(node_network_receive_packets_total[3m])'
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# where to write data to
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# https://docs.victoriametrics.com/anomaly-detection/components/writer/
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writer:
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datasource_url: "http://victoriametrics:8428/"
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# enable self-monitoring in pull and/or push mode
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# https://docs.victoriametrics.com/anomaly-detection/components/monitoring/
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monitoring:
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pull: # Enable /metrics endpoint.
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addr: "0.0.0.0"
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port: 8490
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``` |