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docs: update single version docs by adding extra links and formatting (#2643)

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@ -14,12 +14,18 @@ VictoriaMetrics is a fast, cost-effective and scalable monitoring solution and t
VictoriaMetrics is available in [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases), VictoriaMetrics is available in [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases),
[Docker images](https://hub.docker.com/r/victoriametrics/victoria-metrics/), [Snap packages](https://snapcraft.io/victoriametrics) [Docker images](https://hub.docker.com/r/victoriametrics/victoria-metrics/), [Snap packages](https://snapcraft.io/victoriametrics)
and [source code](https://github.com/VictoriaMetrics/VictoriaMetrics). Just download VictoriaMetrics and follow [these instructions](#how-to-start-victoriametrics). and [source code](https://github.com/VictoriaMetrics/VictoriaMetrics).
Then read [Prometheus setup](#prometheus-setup) and [Grafana setup](#grafana-setup) docs. Just download VictoriaMetrics and follow [these instructions](https://docs.victoriametrics.com/Quick-Start.html).
Cluster version of VictoriaMetrics is available [here](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html). Cluster version of VictoriaMetrics is available [here](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html).
[Contact us](mailto:info@victoriametrics.com) if you need enterprise support for VictoriaMetrics. See [features available in enterprise package](https://victoriametrics.com/products/enterprise/). Enterprise binaries can be downloaded and evaluated for free from [the releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases). Learn more about [key concepts](https://docs.victoriametrics.com/keyConcepts.html) of VictoriaMetrics and follow
[QuickStart guide](https://docs.victoriametrics.com/Quick-Start.html) for better experience.
[Contact us](mailto:info@victoriametrics.com) if you need enterprise support for VictoriaMetrics.
See [features available in enterprise package](https://victoriametrics.com/products/enterprise/).
Enterprise binaries can be downloaded and evaluated for free
from [the releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases).
## Prominent features ## Prominent features
@ -53,7 +59,7 @@ VictoriaMetrics has the following prominent features:
* [JSON line format](#how-to-import-data-in-json-line-format). * [JSON line format](#how-to-import-data-in-json-line-format).
* [Arbitrary CSV data](#how-to-import-csv-data). * [Arbitrary CSV data](#how-to-import-csv-data).
* [Native binary format](#how-to-import-data-in-native-format). * [Native binary format](#how-to-import-data-in-native-format).
* It supports metrics' relabeling. See [these docs](#relabeling) for details. * It supports metrics [relabeling](#relabeling).
* It can deal with [high cardinality issues](https://docs.victoriametrics.com/FAQ.html#what-is-high-cardinality) and [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) issues via [series limiter](#cardinality-limiter). * It can deal with [high cardinality issues](https://docs.victoriametrics.com/FAQ.html#what-is-high-cardinality) and [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) issues via [series limiter](#cardinality-limiter).
* It ideally works with big amounts of time series data from APM, Kubernetes, IoT sensors, connected cars, industrial telemetry, financial data and various [Enterprise workloads](https://victoriametrics.com/products/enterprise/). * It ideally works with big amounts of time series data from APM, Kubernetes, IoT sensors, connected cars, industrial telemetry, financial data and various [Enterprise workloads](https://victoriametrics.com/products/enterprise/).
* It has open source [cluster version](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/cluster). * It has open source [cluster version](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/cluster).
@ -92,9 +98,10 @@ See also [articles and slides about VictoriaMetrics from our users](https://docs
## Operation ## Operation
## How to start VictoriaMetrics ### How to start VictoriaMetrics
Just download [VictoriaMetrics executable](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or [Docker image](https://hub.docker.com/r/victoriametrics/victoria-metrics/) and start it with the desired command-line flags. Just download [VictoriaMetrics executable](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or [Docker image](https://hub.docker.com/r/victoriametrics/victoria-metrics/) and start it with the desired command-line flags.
See also [QuickStart guide](https://docs.victoriametrics.com/Quick-Start.html) for additional information.
The following command-line flags are used the most: The following command-line flags are used the most:
@ -143,18 +150,26 @@ After changes were made, trigger config re-read with the command `curl 127.0.0.1
Add the following lines to Prometheus config file (it is usually located at `/etc/prometheus/prometheus.yml`) in order to send data to VictoriaMetrics: Add the following lines to Prometheus config file (it is usually located at `/etc/prometheus/prometheus.yml`) in order to send data to VictoriaMetrics:
<div class="with-copy" markdown="1">
```yml ```yml
remote_write: remote_write:
- url: http://<victoriametrics-addr>:8428/api/v1/write - url: http://<victoriametrics-addr>:8428/api/v1/write
``` ```
</div>
Substitute `<victoriametrics-addr>` with hostname or IP address of VictoriaMetrics. Substitute `<victoriametrics-addr>` with hostname or IP address of VictoriaMetrics.
Then apply new config via the following command: Then apply new config via the following command:
<div class="with-copy" markdown="1">
```bash ```bash
kill -HUP `pidof prometheus` kill -HUP `pidof prometheus`
``` ```
</div>
Prometheus writes incoming data to local storage and replicates it to remote storage in parallel. Prometheus writes incoming data to local storage and replicates it to remote storage in parallel.
This means that data remains available in local storage for `--storage.tsdb.retention.time` duration This means that data remains available in local storage for `--storage.tsdb.retention.time` duration
even if remote storage is unavailable. even if remote storage is unavailable.
@ -174,6 +189,8 @@ across Prometheus instances, so time series could be filtered and grouped by thi
For highly loaded Prometheus instances (200k+ samples per second) the following tuning may be applied: For highly loaded Prometheus instances (200k+ samples per second) the following tuning may be applied:
<div class="with-copy" markdown="1">
```yaml ```yaml
remote_write: remote_write:
- url: http://<victoriametrics-addr>:8428/api/v1/write - url: http://<victoriametrics-addr>:8428/api/v1/write
@ -183,13 +200,18 @@ remote_write:
max_shards: 30 max_shards: 30
``` ```
</div>
Using remote write increases memory usage for Prometheus by up to ~25%. If you are experiencing issues with Using remote write increases memory usage for Prometheus by up to ~25%. If you are experiencing issues with
too high memory consumption of Prometheus, then try to lower `max_samples_per_send` and `capacity` params. Keep in mind that these two params are tightly connected. too high memory consumption of Prometheus, then try to lower `max_samples_per_send` and `capacity` params.
Keep in mind that these two params are tightly connected.
Read more about tuning remote write for Prometheus [here](https://prometheus.io/docs/practices/remote_write). Read more about tuning remote write for Prometheus [here](https://prometheus.io/docs/practices/remote_write).
It is recommended upgrading Prometheus to [v2.12.0](https://github.com/prometheus/prometheus/releases) or newer, since previous versions may have issues with `remote_write`. It is recommended upgrading Prometheus to [v2.12.0](https://github.com/prometheus/prometheus/releases) or newer,
since previous versions may have issues with `remote_write`.
Take a look also at [vmagent](https://docs.victoriametrics.com/vmagent.html) and [vmalert](https://docs.victoriametrics.com/vmalert.html), Take a look also at [vmagent](https://docs.victoriametrics.com/vmagent.html)
and [vmalert](https://docs.victoriametrics.com/vmalert.html),
which can be used as faster and less resource-hungry alternative to Prometheus. which can be used as faster and less resource-hungry alternative to Prometheus.
## Grafana setup ## Grafana setup
@ -218,6 +240,27 @@ The following steps must be performed during the upgrade / downgrade procedure:
Prometheus doesn't drop data during VictoriaMetrics restart. See [this article](https://grafana.com/blog/2019/03/25/whats-new-in-prometheus-2.8-wal-based-remote-write/) for details. The same applies also to [vmagent](https://docs.victoriametrics.com/vmagent.html). Prometheus doesn't drop data during VictoriaMetrics restart. See [this article](https://grafana.com/blog/2019/03/25/whats-new-in-prometheus-2.8-wal-based-remote-write/) for details. The same applies also to [vmagent](https://docs.victoriametrics.com/vmagent.html).
## vmui
VictoriaMetrics provides UI for query troubleshooting and exploration. The UI is available at `http://victoriametrics:8428/vmui`.
The UI allows exploring query results via graphs and tables. Graphs support scrolling and zooming:
* Drag the graph to the left / right in order to move the displayed time range into the past / future.
* Hold `Ctrl` (or `Cmd` on MacOS) and scroll up / down in order to zoom in / out the graph.
Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressing `up` or `down` arrows on the keyboard while the cursor is located in the query input field.
Multi-line queries can be entered by pressing `Shift-Enter` in query input field.
When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
VMUI automatically adjusts the interval between datapoints on the graph depending on the horizontal resolution and on the selected time range. The step value can be customized by clickhing `Override step value` checkbox.
VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
## How to apply new config to VictoriaMetrics ## How to apply new config to VictoriaMetrics
VictoriaMetrics is configured via command-line flags, so it must be restarted when new command-line flags should be applied: VictoriaMetrics is configured via command-line flags, so it must be restarted when new command-line flags should be applied:
@ -316,7 +359,7 @@ and stream plain InfluxDB line protocol data to the configured TCP and/or UDP ad
VictoriaMetrics performs the following transformations to the ingested InfluxDB data: VictoriaMetrics performs the following transformations to the ingested InfluxDB data:
* [`db` query arg](https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint) is mapped into `db` label value * [db query arg](https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint) is mapped into `db` label value
unless `db` tag exists in the InfluxDB line. The `db` label name can be overriden via `-influxDBLabel` command-line flag. unless `db` tag exists in the InfluxDB line. The `db` label name can be overriden via `-influxDBLabel` command-line flag.
* Field names are mapped to time series names prefixed with `{measurement}{separator}` value, where `{separator}` equals to `_` by default. It can be changed with `-influxMeasurementFieldSeparator` command-line flag. See also `-influxSkipSingleField` command-line flag. If `{measurement}` is empty or if `-influxSkipMeasurement` command-line flag is set, then time series names correspond to field names. * Field names are mapped to time series names prefixed with `{measurement}{separator}` value, where `{separator}` equals to `_` by default. It can be changed with `-influxMeasurementFieldSeparator` command-line flag. See also `-influxSkipSingleField` command-line flag. If `{measurement}` is empty or if `-influxSkipMeasurement` command-line flag is set, then time series names correspond to field names.
* Field values are mapped to time series values. * Field values are mapped to time series values.
@ -338,20 +381,28 @@ foo_field2{tag1="value1", tag2="value2"} 40
Example for writing data with [InfluxDB line protocol](https://docs.influxdata.com/influxdb/v1.7/write_protocols/line_protocol_tutorial/) Example for writing data with [InfluxDB line protocol](https://docs.influxdata.com/influxdb/v1.7/write_protocols/line_protocol_tutorial/)
to local VictoriaMetrics using `curl`: to local VictoriaMetrics using `curl`:
<div class="with-copy" markdown="1">
```bash ```bash
curl -d 'measurement,tag1=value1,tag2=value2 field1=123,field2=1.23' -X POST 'http://localhost:8428/write' curl -d 'measurement,tag1=value1,tag2=value2 field1=123,field2=1.23' -X POST 'http://localhost:8428/write'
``` ```
</div>
An arbitrary number of lines delimited by '\n' (aka newline char) can be sent in a single request. An arbitrary number of lines delimited by '\n' (aka newline char) can be sent in a single request.
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match={__name__=~"measurement_.*"}' curl -G 'http://localhost:8428/api/v1/export' -d 'match={__name__=~"measurement_.*"}'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```jsonl ```json
{"metric":{"__name__":"measurement_field1","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560272508147]} {"metric":{"__name__":"measurement_field1","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560272508147]}
{"metric":{"__name__":"measurement_field2","tag1":"value1","tag2":"value2"},"values":[1.23],"timestamps":[1560272508147]} {"metric":{"__name__":"measurement_field2","tag1":"value1","tag2":"value2"},"values":[1.23],"timestamps":[1560272508147]}
``` ```
@ -431,20 +482,28 @@ Send data to the given address from OpenTSDB-compatible agents.
Example for writing data with OpenTSDB protocol to local VictoriaMetrics using `nc`: Example for writing data with OpenTSDB protocol to local VictoriaMetrics using `nc`:
<div class="with-copy" markdown="1">
```bash ```bash
echo "put foo.bar.baz `date +%s` 123 tag1=value1 tag2=value2" | nc -N localhost 4242 echo "put foo.bar.baz `date +%s` 123 tag1=value1 tag2=value2" | nc -N localhost 4242
``` ```
</div>
An arbitrary number of lines delimited by `\n` (aka newline char) can be sent in one go. An arbitrary number of lines delimited by `\n` (aka newline char) can be sent in one go.
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match=foo.bar.baz' curl -G 'http://localhost:8428/api/v1/export' -d 'match=foo.bar.baz'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```bash ```json
{"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277292000]} {"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277292000]}
``` ```
@ -461,25 +520,37 @@ Send data to the given address from OpenTSDB-compatible agents.
Example for writing a single data point: Example for writing a single data point:
<div class="with-copy" markdown="1">
```bash ```bash
curl -H 'Content-Type: application/json' -d '{"metric":"x.y.z","value":45.34,"tags":{"t1":"v1","t2":"v2"}}' http://localhost:4242/api/put curl -H 'Content-Type: application/json' -d '{"metric":"x.y.z","value":45.34,"tags":{"t1":"v1","t2":"v2"}}' http://localhost:4242/api/put
``` ```
</div>
Example for writing multiple data points in a single request: Example for writing multiple data points in a single request:
<div class="with-copy" markdown="1">
```bash ```bash
curl -H 'Content-Type: application/json' -d '[{"metric":"foo","value":45.34},{"metric":"bar","value":43}]' http://localhost:4242/api/put curl -H 'Content-Type: application/json' -d '[{"metric":"foo","value":45.34},{"metric":"bar","value":43}]' http://localhost:4242/api/put
``` ```
</div>
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match[]=x.y.z' -d 'match[]=foo' -d 'match[]=bar' curl -G 'http://localhost:8428/api/v1/export' -d 'match[]=x.y.z' -d 'match[]=foo' -d 'match[]=bar'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```bash ```json
{"metric":{"__name__":"foo"},"values":[45.34],"timestamps":[1566464846000]} {"metric":{"__name__":"foo"},"values":[45.34],"timestamps":[1566464846000]}
{"metric":{"__name__":"bar"},"values":[43],"timestamps":[1566464846000]} {"metric":{"__name__":"bar"},"values":[43],"timestamps":[1566464846000]}
{"metric":{"__name__":"x.y.z","t1":"v1","t2":"v2"},"values":[45.34],"timestamps":[1566464763000]} {"metric":{"__name__":"x.y.z","t1":"v1","t2":"v2"},"values":[45.34],"timestamps":[1566464763000]}
@ -519,7 +590,7 @@ VictoriaMetrics accepts `round_digits` query arg for `/api/v1/query` and `/api/v
By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range. By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range.
Additionally VictoriaMetrics provides the following handlers: Additionally, VictoriaMetrics provides the following handlers:
* `/vmui` - Basic Web UI. See [these docs](#vmui). * `/vmui` - Basic Web UI. See [these docs](#vmui).
* `/api/v1/series/count` - returns the total number of time series in the database. Some notes: * `/api/v1/series/count` - returns the total number of time series in the database. Some notes:
@ -587,26 +658,6 @@ VictoriaMetrics supports the following handlers from [Graphite Tags API](https:/
* [/tags/autoComplete/values](https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support) * [/tags/autoComplete/values](https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support)
* [/tags/delSeries](https://graphite.readthedocs.io/en/stable/tags.html#removing-series-from-the-tagdb) * [/tags/delSeries](https://graphite.readthedocs.io/en/stable/tags.html#removing-series-from-the-tagdb)
## vmui
VictoriaMetrics provides UI for query troubleshooting and exploration. The UI is available at `http://victoriametrics:8428/vmui`.
The UI allows exploring query results via graphs and tables. Graphs support scrolling and zooming:
* Drag the graph to the left / right in order to move the displayed time range into the past / future.
* Hold `Ctrl` (or `Cmd` on MacOS) and scroll up / down in order to zoom in / out the graph.
Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressing `up` or `down` arrows on the keyboard while the cursor is located in the query input field.
Multi-line queries can be entered by pressing `Shift-Enter` in query input field.
When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
VMUI automatically adjusts the interval between datapoints on the graph depending on the horizontal resolution and on the selected time range. The step value can be customized by clickhing `Override step value` checkbox.
VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
## How to build from sources ## How to build from sources
We recommend using either [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or We recommend using either [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or

117
docs/README.md
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@ -14,12 +14,18 @@ VictoriaMetrics is a fast, cost-effective and scalable monitoring solution and t
VictoriaMetrics is available in [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases), VictoriaMetrics is available in [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases),
[Docker images](https://hub.docker.com/r/victoriametrics/victoria-metrics/), [Snap packages](https://snapcraft.io/victoriametrics) [Docker images](https://hub.docker.com/r/victoriametrics/victoria-metrics/), [Snap packages](https://snapcraft.io/victoriametrics)
and [source code](https://github.com/VictoriaMetrics/VictoriaMetrics). Just download VictoriaMetrics and follow [these instructions](#how-to-start-victoriametrics). and [source code](https://github.com/VictoriaMetrics/VictoriaMetrics).
Then read [Prometheus setup](#prometheus-setup) and [Grafana setup](#grafana-setup) docs. Just download VictoriaMetrics and follow [these instructions](https://docs.victoriametrics.com/Quick-Start.html).
Cluster version of VictoriaMetrics is available [here](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html). Cluster version of VictoriaMetrics is available [here](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html).
[Contact us](mailto:info@victoriametrics.com) if you need enterprise support for VictoriaMetrics. See [features available in enterprise package](https://victoriametrics.com/products/enterprise/). Enterprise binaries can be downloaded and evaluated for free from [the releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases). Learn more about [key concepts](https://docs.victoriametrics.com/keyConcepts.html) of VictoriaMetrics and follow
[QuickStart guide](https://docs.victoriametrics.com/Quick-Start.html) for better experience.
[Contact us](mailto:info@victoriametrics.com) if you need enterprise support for VictoriaMetrics.
See [features available in enterprise package](https://victoriametrics.com/products/enterprise/).
Enterprise binaries can be downloaded and evaluated for free
from [the releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases).
## Prominent features ## Prominent features
@ -53,7 +59,7 @@ VictoriaMetrics has the following prominent features:
* [JSON line format](#how-to-import-data-in-json-line-format). * [JSON line format](#how-to-import-data-in-json-line-format).
* [Arbitrary CSV data](#how-to-import-csv-data). * [Arbitrary CSV data](#how-to-import-csv-data).
* [Native binary format](#how-to-import-data-in-native-format). * [Native binary format](#how-to-import-data-in-native-format).
* It supports metrics' relabeling. See [these docs](#relabeling) for details. * It supports metrics [relabeling](#relabeling).
* It can deal with [high cardinality issues](https://docs.victoriametrics.com/FAQ.html#what-is-high-cardinality) and [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) issues via [series limiter](#cardinality-limiter). * It can deal with [high cardinality issues](https://docs.victoriametrics.com/FAQ.html#what-is-high-cardinality) and [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) issues via [series limiter](#cardinality-limiter).
* It ideally works with big amounts of time series data from APM, Kubernetes, IoT sensors, connected cars, industrial telemetry, financial data and various [Enterprise workloads](https://victoriametrics.com/products/enterprise/). * It ideally works with big amounts of time series data from APM, Kubernetes, IoT sensors, connected cars, industrial telemetry, financial data and various [Enterprise workloads](https://victoriametrics.com/products/enterprise/).
* It has open source [cluster version](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/cluster). * It has open source [cluster version](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/cluster).
@ -92,9 +98,10 @@ See also [articles and slides about VictoriaMetrics from our users](https://docs
## Operation ## Operation
## How to start VictoriaMetrics ### How to start VictoriaMetrics
Just download [VictoriaMetrics executable](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or [Docker image](https://hub.docker.com/r/victoriametrics/victoria-metrics/) and start it with the desired command-line flags. Just download [VictoriaMetrics executable](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or [Docker image](https://hub.docker.com/r/victoriametrics/victoria-metrics/) and start it with the desired command-line flags.
See also [QuickStart guide](https://docs.victoriametrics.com/Quick-Start.html) for additional information.
The following command-line flags are used the most: The following command-line flags are used the most:
@ -143,18 +150,26 @@ After changes were made, trigger config re-read with the command `curl 127.0.0.1
Add the following lines to Prometheus config file (it is usually located at `/etc/prometheus/prometheus.yml`) in order to send data to VictoriaMetrics: Add the following lines to Prometheus config file (it is usually located at `/etc/prometheus/prometheus.yml`) in order to send data to VictoriaMetrics:
<div class="with-copy" markdown="1">
```yml ```yml
remote_write: remote_write:
- url: http://<victoriametrics-addr>:8428/api/v1/write - url: http://<victoriametrics-addr>:8428/api/v1/write
``` ```
</div>
Substitute `<victoriametrics-addr>` with hostname or IP address of VictoriaMetrics. Substitute `<victoriametrics-addr>` with hostname or IP address of VictoriaMetrics.
Then apply new config via the following command: Then apply new config via the following command:
<div class="with-copy" markdown="1">
```bash ```bash
kill -HUP `pidof prometheus` kill -HUP `pidof prometheus`
``` ```
</div>
Prometheus writes incoming data to local storage and replicates it to remote storage in parallel. Prometheus writes incoming data to local storage and replicates it to remote storage in parallel.
This means that data remains available in local storage for `--storage.tsdb.retention.time` duration This means that data remains available in local storage for `--storage.tsdb.retention.time` duration
even if remote storage is unavailable. even if remote storage is unavailable.
@ -174,6 +189,8 @@ across Prometheus instances, so time series could be filtered and grouped by thi
For highly loaded Prometheus instances (200k+ samples per second) the following tuning may be applied: For highly loaded Prometheus instances (200k+ samples per second) the following tuning may be applied:
<div class="with-copy" markdown="1">
```yaml ```yaml
remote_write: remote_write:
- url: http://<victoriametrics-addr>:8428/api/v1/write - url: http://<victoriametrics-addr>:8428/api/v1/write
@ -183,13 +200,18 @@ remote_write:
max_shards: 30 max_shards: 30
``` ```
</div>
Using remote write increases memory usage for Prometheus by up to ~25%. If you are experiencing issues with Using remote write increases memory usage for Prometheus by up to ~25%. If you are experiencing issues with
too high memory consumption of Prometheus, then try to lower `max_samples_per_send` and `capacity` params. Keep in mind that these two params are tightly connected. too high memory consumption of Prometheus, then try to lower `max_samples_per_send` and `capacity` params.
Keep in mind that these two params are tightly connected.
Read more about tuning remote write for Prometheus [here](https://prometheus.io/docs/practices/remote_write). Read more about tuning remote write for Prometheus [here](https://prometheus.io/docs/practices/remote_write).
It is recommended upgrading Prometheus to [v2.12.0](https://github.com/prometheus/prometheus/releases) or newer, since previous versions may have issues with `remote_write`. It is recommended upgrading Prometheus to [v2.12.0](https://github.com/prometheus/prometheus/releases) or newer,
since previous versions may have issues with `remote_write`.
Take a look also at [vmagent](https://docs.victoriametrics.com/vmagent.html) and [vmalert](https://docs.victoriametrics.com/vmalert.html), Take a look also at [vmagent](https://docs.victoriametrics.com/vmagent.html)
and [vmalert](https://docs.victoriametrics.com/vmalert.html),
which can be used as faster and less resource-hungry alternative to Prometheus. which can be used as faster and less resource-hungry alternative to Prometheus.
## Grafana setup ## Grafana setup
@ -218,6 +240,27 @@ The following steps must be performed during the upgrade / downgrade procedure:
Prometheus doesn't drop data during VictoriaMetrics restart. See [this article](https://grafana.com/blog/2019/03/25/whats-new-in-prometheus-2.8-wal-based-remote-write/) for details. The same applies also to [vmagent](https://docs.victoriametrics.com/vmagent.html). Prometheus doesn't drop data during VictoriaMetrics restart. See [this article](https://grafana.com/blog/2019/03/25/whats-new-in-prometheus-2.8-wal-based-remote-write/) for details. The same applies also to [vmagent](https://docs.victoriametrics.com/vmagent.html).
## vmui
VictoriaMetrics provides UI for query troubleshooting and exploration. The UI is available at `http://victoriametrics:8428/vmui`.
The UI allows exploring query results via graphs and tables. Graphs support scrolling and zooming:
* Drag the graph to the left / right in order to move the displayed time range into the past / future.
* Hold `Ctrl` (or `Cmd` on MacOS) and scroll up / down in order to zoom in / out the graph.
Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressing `up` or `down` arrows on the keyboard while the cursor is located in the query input field.
Multi-line queries can be entered by pressing `Shift-Enter` in query input field.
When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
VMUI automatically adjusts the interval between datapoints on the graph depending on the horizontal resolution and on the selected time range. The step value can be customized by clickhing `Override step value` checkbox.
VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
## How to apply new config to VictoriaMetrics ## How to apply new config to VictoriaMetrics
VictoriaMetrics is configured via command-line flags, so it must be restarted when new command-line flags should be applied: VictoriaMetrics is configured via command-line flags, so it must be restarted when new command-line flags should be applied:
@ -316,7 +359,7 @@ and stream plain InfluxDB line protocol data to the configured TCP and/or UDP ad
VictoriaMetrics performs the following transformations to the ingested InfluxDB data: VictoriaMetrics performs the following transformations to the ingested InfluxDB data:
* [`db` query arg](https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint) is mapped into `db` label value * [db query arg](https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint) is mapped into `db` label value
unless `db` tag exists in the InfluxDB line. The `db` label name can be overriden via `-influxDBLabel` command-line flag. unless `db` tag exists in the InfluxDB line. The `db` label name can be overriden via `-influxDBLabel` command-line flag.
* Field names are mapped to time series names prefixed with `{measurement}{separator}` value, where `{separator}` equals to `_` by default. It can be changed with `-influxMeasurementFieldSeparator` command-line flag. See also `-influxSkipSingleField` command-line flag. If `{measurement}` is empty or if `-influxSkipMeasurement` command-line flag is set, then time series names correspond to field names. * Field names are mapped to time series names prefixed with `{measurement}{separator}` value, where `{separator}` equals to `_` by default. It can be changed with `-influxMeasurementFieldSeparator` command-line flag. See also `-influxSkipSingleField` command-line flag. If `{measurement}` is empty or if `-influxSkipMeasurement` command-line flag is set, then time series names correspond to field names.
* Field values are mapped to time series values. * Field values are mapped to time series values.
@ -338,20 +381,28 @@ foo_field2{tag1="value1", tag2="value2"} 40
Example for writing data with [InfluxDB line protocol](https://docs.influxdata.com/influxdb/v1.7/write_protocols/line_protocol_tutorial/) Example for writing data with [InfluxDB line protocol](https://docs.influxdata.com/influxdb/v1.7/write_protocols/line_protocol_tutorial/)
to local VictoriaMetrics using `curl`: to local VictoriaMetrics using `curl`:
<div class="with-copy" markdown="1">
```bash ```bash
curl -d 'measurement,tag1=value1,tag2=value2 field1=123,field2=1.23' -X POST 'http://localhost:8428/write' curl -d 'measurement,tag1=value1,tag2=value2 field1=123,field2=1.23' -X POST 'http://localhost:8428/write'
``` ```
</div>
An arbitrary number of lines delimited by '\n' (aka newline char) can be sent in a single request. An arbitrary number of lines delimited by '\n' (aka newline char) can be sent in a single request.
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match={__name__=~"measurement_.*"}' curl -G 'http://localhost:8428/api/v1/export' -d 'match={__name__=~"measurement_.*"}'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```jsonl ```json
{"metric":{"__name__":"measurement_field1","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560272508147]} {"metric":{"__name__":"measurement_field1","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560272508147]}
{"metric":{"__name__":"measurement_field2","tag1":"value1","tag2":"value2"},"values":[1.23],"timestamps":[1560272508147]} {"metric":{"__name__":"measurement_field2","tag1":"value1","tag2":"value2"},"values":[1.23],"timestamps":[1560272508147]}
``` ```
@ -431,20 +482,28 @@ Send data to the given address from OpenTSDB-compatible agents.
Example for writing data with OpenTSDB protocol to local VictoriaMetrics using `nc`: Example for writing data with OpenTSDB protocol to local VictoriaMetrics using `nc`:
<div class="with-copy" markdown="1">
```bash ```bash
echo "put foo.bar.baz `date +%s` 123 tag1=value1 tag2=value2" | nc -N localhost 4242 echo "put foo.bar.baz `date +%s` 123 tag1=value1 tag2=value2" | nc -N localhost 4242
``` ```
</div>
An arbitrary number of lines delimited by `\n` (aka newline char) can be sent in one go. An arbitrary number of lines delimited by `\n` (aka newline char) can be sent in one go.
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match=foo.bar.baz' curl -G 'http://localhost:8428/api/v1/export' -d 'match=foo.bar.baz'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```bash ```json
{"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277292000]} {"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277292000]}
``` ```
@ -461,25 +520,37 @@ Send data to the given address from OpenTSDB-compatible agents.
Example for writing a single data point: Example for writing a single data point:
<div class="with-copy" markdown="1">
```bash ```bash
curl -H 'Content-Type: application/json' -d '{"metric":"x.y.z","value":45.34,"tags":{"t1":"v1","t2":"v2"}}' http://localhost:4242/api/put curl -H 'Content-Type: application/json' -d '{"metric":"x.y.z","value":45.34,"tags":{"t1":"v1","t2":"v2"}}' http://localhost:4242/api/put
``` ```
</div>
Example for writing multiple data points in a single request: Example for writing multiple data points in a single request:
<div class="with-copy" markdown="1">
```bash ```bash
curl -H 'Content-Type: application/json' -d '[{"metric":"foo","value":45.34},{"metric":"bar","value":43}]' http://localhost:4242/api/put curl -H 'Content-Type: application/json' -d '[{"metric":"foo","value":45.34},{"metric":"bar","value":43}]' http://localhost:4242/api/put
``` ```
</div>
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match[]=x.y.z' -d 'match[]=foo' -d 'match[]=bar' curl -G 'http://localhost:8428/api/v1/export' -d 'match[]=x.y.z' -d 'match[]=foo' -d 'match[]=bar'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```bash ```json
{"metric":{"__name__":"foo"},"values":[45.34],"timestamps":[1566464846000]} {"metric":{"__name__":"foo"},"values":[45.34],"timestamps":[1566464846000]}
{"metric":{"__name__":"bar"},"values":[43],"timestamps":[1566464846000]} {"metric":{"__name__":"bar"},"values":[43],"timestamps":[1566464846000]}
{"metric":{"__name__":"x.y.z","t1":"v1","t2":"v2"},"values":[45.34],"timestamps":[1566464763000]} {"metric":{"__name__":"x.y.z","t1":"v1","t2":"v2"},"values":[45.34],"timestamps":[1566464763000]}
@ -519,7 +590,7 @@ VictoriaMetrics accepts `round_digits` query arg for `/api/v1/query` and `/api/v
By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range. By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range.
Additionally VictoriaMetrics provides the following handlers: Additionally, VictoriaMetrics provides the following handlers:
* `/vmui` - Basic Web UI. See [these docs](#vmui). * `/vmui` - Basic Web UI. See [these docs](#vmui).
* `/api/v1/series/count` - returns the total number of time series in the database. Some notes: * `/api/v1/series/count` - returns the total number of time series in the database. Some notes:
@ -587,26 +658,6 @@ VictoriaMetrics supports the following handlers from [Graphite Tags API](https:/
* [/tags/autoComplete/values](https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support) * [/tags/autoComplete/values](https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support)
* [/tags/delSeries](https://graphite.readthedocs.io/en/stable/tags.html#removing-series-from-the-tagdb) * [/tags/delSeries](https://graphite.readthedocs.io/en/stable/tags.html#removing-series-from-the-tagdb)
## vmui
VictoriaMetrics provides UI for query troubleshooting and exploration. The UI is available at `http://victoriametrics:8428/vmui`.
The UI allows exploring query results via graphs and tables. Graphs support scrolling and zooming:
* Drag the graph to the left / right in order to move the displayed time range into the past / future.
* Hold `Ctrl` (or `Cmd` on MacOS) and scroll up / down in order to zoom in / out the graph.
Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressing `up` or `down` arrows on the keyboard while the cursor is located in the query input field.
Multi-line queries can be entered by pressing `Shift-Enter` in query input field.
When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
VMUI automatically adjusts the interval between datapoints on the graph depending on the horizontal resolution and on the selected time range. The step value can be customized by clickhing `Override step value` checkbox.
VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
## How to build from sources ## How to build from sources
We recommend using either [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or We recommend using either [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or

117
docs/Single-server-VictoriaMetrics.md
View file

@ -18,12 +18,18 @@ VictoriaMetrics is a fast, cost-effective and scalable monitoring solution and t
VictoriaMetrics is available in [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases), VictoriaMetrics is available in [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases),
[Docker images](https://hub.docker.com/r/victoriametrics/victoria-metrics/), [Snap packages](https://snapcraft.io/victoriametrics) [Docker images](https://hub.docker.com/r/victoriametrics/victoria-metrics/), [Snap packages](https://snapcraft.io/victoriametrics)
and [source code](https://github.com/VictoriaMetrics/VictoriaMetrics). Just download VictoriaMetrics and follow [these instructions](#how-to-start-victoriametrics). and [source code](https://github.com/VictoriaMetrics/VictoriaMetrics).
Then read [Prometheus setup](#prometheus-setup) and [Grafana setup](#grafana-setup) docs. Just download VictoriaMetrics and follow [these instructions](https://docs.victoriametrics.com/Quick-Start.html).
Cluster version of VictoriaMetrics is available [here](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html). Cluster version of VictoriaMetrics is available [here](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html).
[Contact us](mailto:info@victoriametrics.com) if you need enterprise support for VictoriaMetrics. See [features available in enterprise package](https://victoriametrics.com/products/enterprise/). Enterprise binaries can be downloaded and evaluated for free from [the releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases). Learn more about [key concepts](https://docs.victoriametrics.com/keyConcepts.html) of VictoriaMetrics and follow
[QuickStart guide](https://docs.victoriametrics.com/Quick-Start.html) for better experience.
[Contact us](mailto:info@victoriametrics.com) if you need enterprise support for VictoriaMetrics.
See [features available in enterprise package](https://victoriametrics.com/products/enterprise/).
Enterprise binaries can be downloaded and evaluated for free
from [the releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases).
## Prominent features ## Prominent features
@ -57,7 +63,7 @@ VictoriaMetrics has the following prominent features:
* [JSON line format](#how-to-import-data-in-json-line-format). * [JSON line format](#how-to-import-data-in-json-line-format).
* [Arbitrary CSV data](#how-to-import-csv-data). * [Arbitrary CSV data](#how-to-import-csv-data).
* [Native binary format](#how-to-import-data-in-native-format). * [Native binary format](#how-to-import-data-in-native-format).
* It supports metrics' relabeling. See [these docs](#relabeling) for details. * It supports metrics [relabeling](#relabeling).
* It can deal with [high cardinality issues](https://docs.victoriametrics.com/FAQ.html#what-is-high-cardinality) and [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) issues via [series limiter](#cardinality-limiter). * It can deal with [high cardinality issues](https://docs.victoriametrics.com/FAQ.html#what-is-high-cardinality) and [high churn rate](https://docs.victoriametrics.com/FAQ.html#what-is-high-churn-rate) issues via [series limiter](#cardinality-limiter).
* It ideally works with big amounts of time series data from APM, Kubernetes, IoT sensors, connected cars, industrial telemetry, financial data and various [Enterprise workloads](https://victoriametrics.com/products/enterprise/). * It ideally works with big amounts of time series data from APM, Kubernetes, IoT sensors, connected cars, industrial telemetry, financial data and various [Enterprise workloads](https://victoriametrics.com/products/enterprise/).
* It has open source [cluster version](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/cluster). * It has open source [cluster version](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/cluster).
@ -96,9 +102,10 @@ See also [articles and slides about VictoriaMetrics from our users](https://docs
## Operation ## Operation
## How to start VictoriaMetrics ### How to start VictoriaMetrics
Just download [VictoriaMetrics executable](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or [Docker image](https://hub.docker.com/r/victoriametrics/victoria-metrics/) and start it with the desired command-line flags. Just download [VictoriaMetrics executable](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or [Docker image](https://hub.docker.com/r/victoriametrics/victoria-metrics/) and start it with the desired command-line flags.
See also [QuickStart guide](https://docs.victoriametrics.com/Quick-Start.html) for additional information.
The following command-line flags are used the most: The following command-line flags are used the most:
@ -147,18 +154,26 @@ After changes were made, trigger config re-read with the command `curl 127.0.0.1
Add the following lines to Prometheus config file (it is usually located at `/etc/prometheus/prometheus.yml`) in order to send data to VictoriaMetrics: Add the following lines to Prometheus config file (it is usually located at `/etc/prometheus/prometheus.yml`) in order to send data to VictoriaMetrics:
<div class="with-copy" markdown="1">
```yml ```yml
remote_write: remote_write:
- url: http://<victoriametrics-addr>:8428/api/v1/write - url: http://<victoriametrics-addr>:8428/api/v1/write
``` ```
</div>
Substitute `<victoriametrics-addr>` with hostname or IP address of VictoriaMetrics. Substitute `<victoriametrics-addr>` with hostname or IP address of VictoriaMetrics.
Then apply new config via the following command: Then apply new config via the following command:
<div class="with-copy" markdown="1">
```bash ```bash
kill -HUP `pidof prometheus` kill -HUP `pidof prometheus`
``` ```
</div>
Prometheus writes incoming data to local storage and replicates it to remote storage in parallel. Prometheus writes incoming data to local storage and replicates it to remote storage in parallel.
This means that data remains available in local storage for `--storage.tsdb.retention.time` duration This means that data remains available in local storage for `--storage.tsdb.retention.time` duration
even if remote storage is unavailable. even if remote storage is unavailable.
@ -178,6 +193,8 @@ across Prometheus instances, so time series could be filtered and grouped by thi
For highly loaded Prometheus instances (200k+ samples per second) the following tuning may be applied: For highly loaded Prometheus instances (200k+ samples per second) the following tuning may be applied:
<div class="with-copy" markdown="1">
```yaml ```yaml
remote_write: remote_write:
- url: http://<victoriametrics-addr>:8428/api/v1/write - url: http://<victoriametrics-addr>:8428/api/v1/write
@ -187,13 +204,18 @@ remote_write:
max_shards: 30 max_shards: 30
``` ```
</div>
Using remote write increases memory usage for Prometheus by up to ~25%. If you are experiencing issues with Using remote write increases memory usage for Prometheus by up to ~25%. If you are experiencing issues with
too high memory consumption of Prometheus, then try to lower `max_samples_per_send` and `capacity` params. Keep in mind that these two params are tightly connected. too high memory consumption of Prometheus, then try to lower `max_samples_per_send` and `capacity` params.
Keep in mind that these two params are tightly connected.
Read more about tuning remote write for Prometheus [here](https://prometheus.io/docs/practices/remote_write). Read more about tuning remote write for Prometheus [here](https://prometheus.io/docs/practices/remote_write).
It is recommended upgrading Prometheus to [v2.12.0](https://github.com/prometheus/prometheus/releases) or newer, since previous versions may have issues with `remote_write`. It is recommended upgrading Prometheus to [v2.12.0](https://github.com/prometheus/prometheus/releases) or newer,
since previous versions may have issues with `remote_write`.
Take a look also at [vmagent](https://docs.victoriametrics.com/vmagent.html) and [vmalert](https://docs.victoriametrics.com/vmalert.html), Take a look also at [vmagent](https://docs.victoriametrics.com/vmagent.html)
and [vmalert](https://docs.victoriametrics.com/vmalert.html),
which can be used as faster and less resource-hungry alternative to Prometheus. which can be used as faster and less resource-hungry alternative to Prometheus.
## Grafana setup ## Grafana setup
@ -222,6 +244,27 @@ The following steps must be performed during the upgrade / downgrade procedure:
Prometheus doesn't drop data during VictoriaMetrics restart. See [this article](https://grafana.com/blog/2019/03/25/whats-new-in-prometheus-2.8-wal-based-remote-write/) for details. The same applies also to [vmagent](https://docs.victoriametrics.com/vmagent.html). Prometheus doesn't drop data during VictoriaMetrics restart. See [this article](https://grafana.com/blog/2019/03/25/whats-new-in-prometheus-2.8-wal-based-remote-write/) for details. The same applies also to [vmagent](https://docs.victoriametrics.com/vmagent.html).
## vmui
VictoriaMetrics provides UI for query troubleshooting and exploration. The UI is available at `http://victoriametrics:8428/vmui`.
The UI allows exploring query results via graphs and tables. Graphs support scrolling and zooming:
* Drag the graph to the left / right in order to move the displayed time range into the past / future.
* Hold `Ctrl` (or `Cmd` on MacOS) and scroll up / down in order to zoom in / out the graph.
Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressing `up` or `down` arrows on the keyboard while the cursor is located in the query input field.
Multi-line queries can be entered by pressing `Shift-Enter` in query input field.
When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
VMUI automatically adjusts the interval between datapoints on the graph depending on the horizontal resolution and on the selected time range. The step value can be customized by clickhing `Override step value` checkbox.
VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
## How to apply new config to VictoriaMetrics ## How to apply new config to VictoriaMetrics
VictoriaMetrics is configured via command-line flags, so it must be restarted when new command-line flags should be applied: VictoriaMetrics is configured via command-line flags, so it must be restarted when new command-line flags should be applied:
@ -320,7 +363,7 @@ and stream plain InfluxDB line protocol data to the configured TCP and/or UDP ad
VictoriaMetrics performs the following transformations to the ingested InfluxDB data: VictoriaMetrics performs the following transformations to the ingested InfluxDB data:
* [`db` query arg](https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint) is mapped into `db` label value * [db query arg](https://docs.influxdata.com/influxdb/v1.7/tools/api/#write-http-endpoint) is mapped into `db` label value
unless `db` tag exists in the InfluxDB line. The `db` label name can be overriden via `-influxDBLabel` command-line flag. unless `db` tag exists in the InfluxDB line. The `db` label name can be overriden via `-influxDBLabel` command-line flag.
* Field names are mapped to time series names prefixed with `{measurement}{separator}` value, where `{separator}` equals to `_` by default. It can be changed with `-influxMeasurementFieldSeparator` command-line flag. See also `-influxSkipSingleField` command-line flag. If `{measurement}` is empty or if `-influxSkipMeasurement` command-line flag is set, then time series names correspond to field names. * Field names are mapped to time series names prefixed with `{measurement}{separator}` value, where `{separator}` equals to `_` by default. It can be changed with `-influxMeasurementFieldSeparator` command-line flag. See also `-influxSkipSingleField` command-line flag. If `{measurement}` is empty or if `-influxSkipMeasurement` command-line flag is set, then time series names correspond to field names.
* Field values are mapped to time series values. * Field values are mapped to time series values.
@ -342,20 +385,28 @@ foo_field2{tag1="value1", tag2="value2"} 40
Example for writing data with [InfluxDB line protocol](https://docs.influxdata.com/influxdb/v1.7/write_protocols/line_protocol_tutorial/) Example for writing data with [InfluxDB line protocol](https://docs.influxdata.com/influxdb/v1.7/write_protocols/line_protocol_tutorial/)
to local VictoriaMetrics using `curl`: to local VictoriaMetrics using `curl`:
<div class="with-copy" markdown="1">
```bash ```bash
curl -d 'measurement,tag1=value1,tag2=value2 field1=123,field2=1.23' -X POST 'http://localhost:8428/write' curl -d 'measurement,tag1=value1,tag2=value2 field1=123,field2=1.23' -X POST 'http://localhost:8428/write'
``` ```
</div>
An arbitrary number of lines delimited by '\n' (aka newline char) can be sent in a single request. An arbitrary number of lines delimited by '\n' (aka newline char) can be sent in a single request.
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match={__name__=~"measurement_.*"}' curl -G 'http://localhost:8428/api/v1/export' -d 'match={__name__=~"measurement_.*"}'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```jsonl ```json
{"metric":{"__name__":"measurement_field1","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560272508147]} {"metric":{"__name__":"measurement_field1","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560272508147]}
{"metric":{"__name__":"measurement_field2","tag1":"value1","tag2":"value2"},"values":[1.23],"timestamps":[1560272508147]} {"metric":{"__name__":"measurement_field2","tag1":"value1","tag2":"value2"},"values":[1.23],"timestamps":[1560272508147]}
``` ```
@ -435,20 +486,28 @@ Send data to the given address from OpenTSDB-compatible agents.
Example for writing data with OpenTSDB protocol to local VictoriaMetrics using `nc`: Example for writing data with OpenTSDB protocol to local VictoriaMetrics using `nc`:
<div class="with-copy" markdown="1">
```bash ```bash
echo "put foo.bar.baz `date +%s` 123 tag1=value1 tag2=value2" | nc -N localhost 4242 echo "put foo.bar.baz `date +%s` 123 tag1=value1 tag2=value2" | nc -N localhost 4242
``` ```
</div>
An arbitrary number of lines delimited by `\n` (aka newline char) can be sent in one go. An arbitrary number of lines delimited by `\n` (aka newline char) can be sent in one go.
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match=foo.bar.baz' curl -G 'http://localhost:8428/api/v1/export' -d 'match=foo.bar.baz'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```bash ```json
{"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277292000]} {"metric":{"__name__":"foo.bar.baz","tag1":"value1","tag2":"value2"},"values":[123],"timestamps":[1560277292000]}
``` ```
@ -465,25 +524,37 @@ Send data to the given address from OpenTSDB-compatible agents.
Example for writing a single data point: Example for writing a single data point:
<div class="with-copy" markdown="1">
```bash ```bash
curl -H 'Content-Type: application/json' -d '{"metric":"x.y.z","value":45.34,"tags":{"t1":"v1","t2":"v2"}}' http://localhost:4242/api/put curl -H 'Content-Type: application/json' -d '{"metric":"x.y.z","value":45.34,"tags":{"t1":"v1","t2":"v2"}}' http://localhost:4242/api/put
``` ```
</div>
Example for writing multiple data points in a single request: Example for writing multiple data points in a single request:
<div class="with-copy" markdown="1">
```bash ```bash
curl -H 'Content-Type: application/json' -d '[{"metric":"foo","value":45.34},{"metric":"bar","value":43}]' http://localhost:4242/api/put curl -H 'Content-Type: application/json' -d '[{"metric":"foo","value":45.34},{"metric":"bar","value":43}]' http://localhost:4242/api/put
``` ```
</div>
After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint: After that the data may be read via [/api/v1/export](#how-to-export-data-in-json-line-format) endpoint:
<div class="with-copy" markdown="1">
```bash ```bash
curl -G 'http://localhost:8428/api/v1/export' -d 'match[]=x.y.z' -d 'match[]=foo' -d 'match[]=bar' curl -G 'http://localhost:8428/api/v1/export' -d 'match[]=x.y.z' -d 'match[]=foo' -d 'match[]=bar'
``` ```
</div>
The `/api/v1/export` endpoint should return the following response: The `/api/v1/export` endpoint should return the following response:
```bash ```json
{"metric":{"__name__":"foo"},"values":[45.34],"timestamps":[1566464846000]} {"metric":{"__name__":"foo"},"values":[45.34],"timestamps":[1566464846000]}
{"metric":{"__name__":"bar"},"values":[43],"timestamps":[1566464846000]} {"metric":{"__name__":"bar"},"values":[43],"timestamps":[1566464846000]}
{"metric":{"__name__":"x.y.z","t1":"v1","t2":"v2"},"values":[45.34],"timestamps":[1566464763000]} {"metric":{"__name__":"x.y.z","t1":"v1","t2":"v2"},"values":[45.34],"timestamps":[1566464763000]}
@ -523,7 +594,7 @@ VictoriaMetrics accepts `round_digits` query arg for `/api/v1/query` and `/api/v
By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range. By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range.
Additionally VictoriaMetrics provides the following handlers: Additionally, VictoriaMetrics provides the following handlers:
* `/vmui` - Basic Web UI. See [these docs](#vmui). * `/vmui` - Basic Web UI. See [these docs](#vmui).
* `/api/v1/series/count` - returns the total number of time series in the database. Some notes: * `/api/v1/series/count` - returns the total number of time series in the database. Some notes:
@ -591,26 +662,6 @@ VictoriaMetrics supports the following handlers from [Graphite Tags API](https:/
* [/tags/autoComplete/values](https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support) * [/tags/autoComplete/values](https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support)
* [/tags/delSeries](https://graphite.readthedocs.io/en/stable/tags.html#removing-series-from-the-tagdb) * [/tags/delSeries](https://graphite.readthedocs.io/en/stable/tags.html#removing-series-from-the-tagdb)
## vmui
VictoriaMetrics provides UI for query troubleshooting and exploration. The UI is available at `http://victoriametrics:8428/vmui`.
The UI allows exploring query results via graphs and tables. Graphs support scrolling and zooming:
* Drag the graph to the left / right in order to move the displayed time range into the past / future.
* Hold `Ctrl` (or `Cmd` on MacOS) and scroll up / down in order to zoom in / out the graph.
Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressing `up` or `down` arrows on the keyboard while the cursor is located in the query input field.
Multi-line queries can be entered by pressing `Shift-Enter` in query input field.
When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
VMUI automatically adjusts the interval between datapoints on the graph depending on the horizontal resolution and on the selected time range. The step value can be customized by clickhing `Override step value` checkbox.
VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
## How to build from sources ## How to build from sources
We recommend using either [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or We recommend using either [binary releases](https://github.com/VictoriaMetrics/VictoriaMetrics/releases) or