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prometheus-tsdb-dump

prometheus-tsdb-dump reads a Prometheus TSDB block and writes metrics.

Installation

$ git clone https://github.com/ryotarai/prometheus-tsdb-dump.git
$ cd prometheus-tsdb-dump
$ make build

Usage

$ prometheus-tsdb-dump -block /path/to/prometheus-data/block-ulid -format victoriametrics
{"metric":{"__name__":"up","job":"node-exporter","instance":"a"},"values":[1,1,1],"timestamps":[1578636058619,1578636118619,1578636178619]}
{"metric":{"__name__":"up","job":"node-exporter","instance":"b"},"values":[1,1,1],"timestamps":[1578636058619,1578636118619,1578636178619]}

Options

  • -format: Output format (default: victoriametrics)
  • -min-timestamp: Minimum timestamp of exported samples (unix time in msec)
  • -max-timestamp: Maximum timestamp of exported samples (unix time in msec)

Output Formats

Output format can be configured via -format option.

victoriametrics

victoriametrics format is a JSON streaming format which can be imported via VictoriaMetrics' /api/v1/import API. It looks like:

{"metric":{"__name__":"up","job":"node-exporter"},"values":[1,1,1],"timestamps":[1578636058619,1578636118619,1578636178619]}

How to import TSDB data from Prometheus to VictoriaMetrics

First, take a snapshot of Prometheus TSDB:

$ curl -XPOST http://your-prometheus:9090/api/v1/admin/tsdb/snapshot
{"status":"success","data":{"name":"20200110T104512Z-xxxxxxxxxxxx"}}

Then, import data to VictoriaMetrics:

$ cd /path/to/prometheus/data/snapshots/20200110T104512Z-xxxxxxxxxxxx
$ parallelism="$(nproc)"
$ find . -mindepth 1 -maxdepth 1 -type d | xargs -n1 -P "$parallelism" sh -c 'echo $0; prometheus-tsdb-dump-linux -block "$0" -format victoriametrics | curl http://your-victoriametrics:8428/api/v1/import -T -'

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prometheus-tsdb-dump reads a Prometheus TSDB block and writes metrics

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