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https://github.com/cleafy/promqueen

prometheus offline data recorder and backfiller
https://github.com/cleafy/promqueen

devops devops-tools go golang prometheus prometheus-metrics prometheus-monitoring-solution prometheus-utility recorder replayer

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prometheus offline data recorder and backfiller

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# PromQueen
**PromQueen** made possible to record _prometheus_ metrics offline.
**PromQueen** can, therefore, backfill the recorded data inside a native _prometheus_ database.

**PromQueen** is composed of two primary tools:

- `promrec` tapes the metrics in a specified output file.
- `promplay` backfills the _prometheus_ database from scratch.

## Build instructions (Linux/OSX)

Clone this repository in your **$GOPATH**:

```
$ mkdir -p $GOPATH/src/github.com/Cleafy
$ cd $GOPATH/src/github.com/Cleafy
$ git clone https://github.com/Cleafy/promqueen.git
```

Use Go package manager ***dep*** to install the required dependencies:

```
$ cd $GOPATH/src/github.com/Cleafy/promqueen
$ dep ensure
```

To build `promrec`:

```
$ cd $GOPATH/src/github.com/Cleafy/promqueen/bin/promrec
$ go build
```

To build `promplay`:

```
$ cd $GOPATH/src/github.com/Cleafy/promqueen/bin/promplay
$ go build
```

## Usage

### PromREC

```
usage: promrec []

Flags:
--help Show context-sensitive help (also try --help-long and --help-man).
--debug Enable debug mode.
--gzip Enable gzip mode.
-i, --interval=60s Timeout waiting for ping.
-u, --umap=UMAP ... stringmap [eg. service.name=http://get.uri:port/uri].
-o, --output="metrics" Output file.
--version Show application version.
```

### PromPLAY

```
usage: promplay []

Flags:
--help Show context-sensitive help (also try --help-long and --help-man).
--debug Enable debug mode. (VERY VERBOSE!)
--verbose (-v) Enable info-level message
--nopromcfg Disable the generation of the prometheus cfg file (prometheus.yml)
-d, --dir="/tmp" Input directory.
--version Show application version.
--storage.path="data" Directory path to create and fill the data store under.
--storage.retention-period=360h
Period of time to store data for
--storage.checkpoint-interval=30m
Period of time to store data for
--storage.checkpoint-dirty-series-limit=10000
Period of time to store data for
```

### Environment variables

```PROM_ARGS```: The argument for the promqueen service. Output, interval and at least one service is mandatory.
- E.g. --output=/var/log/promqueen/metrics/metrics.prom --interval=30s -u serviceName1=URL1 -u serviceName2=URL2 ...

```ROTATION_FILE_LOG```: where the rotation should occurr. Must be the same of the "output" parameter in PROM_ARGS

```ROTATION_PERIOD```: how frequently a rotation will occurr. Default: "daily"

```ROTATION_COUNT```: how many rotation will be retained. Default: 10

```ROTATION_SIZE```: how big each rotation file will be in bytes. -1 means no limit. Default: -1. E.g. 100M

```
docker run -d --network=host --name promqueen \
-e ROTATION_FILE_LOG="/var/log/promqueen/metrics/metrics.prom" \
-e PROM_ARGS="--output=/var/log/promqueen/metrics/metrics.prom --interval=30s -u service1=URL1 -u service2=URL2" \
promqueen_image
```

### Notes

As of today **PromQueen** only supports backfilling inside _prometheus_ local storage. New storage types such as influxdb are not supported.