A HTTP server that helps Grafana read RRD files via Grafana Simple JSON Datasource plugin
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README.md

Grafana RRD Server

A simple HTTP server that reads RRD files and responds to requests from Grafana with Grafana Simple JSON Datasource plugin.

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This server supports all endpoints (urls) defined in the Grafana Simple JSON Datasource plugin documentation but:

  • You can use * as a wildcard in the target values (but not for ds) for the /query endpoint.

Requirement

  • librrd-dev (rrdtool)
  • Go
  • Grafana 3.0 and newer + Simple JSON Datasource plugin 1.0.0 and newer

Usage

  1. Install librrd-dev (rrdtool).

    On Ubuntu/Debian:

    sudo apt install librrd-dev
    

    On CentOS:

    sudo yum install rrdtool-devel
    

    On openSUSE

    sudo zypper in rrdtool-devel
    

    On Mac:

    brew install rrdtool
    
  2. Get the package.

    go get github.com/doublemarket/grafana-rrd-server
    

    Otherwise, download the latest release, gunzip it, and put the file in a directory included in $PATH:

    gunzip grafana-rrd-server_linux_amd64.gz
    
  3. Run the server.

    grafana-rrd-server
    

    You can use the following options:

    • -h : Shows help messages.
    • -p : Specifies server port. (default: 9000)
    • -i : Specifies server listen address. (default: any)
    • -r : Specifies a directory path keeping RRD files. (default: "./sample/")
      • The server recursively searches RRD files under the directory and returns a list of them for the /search endpoint.
    • -a : Specifies the annotations file. It should be a CSV file which has a title line at the top like the sample file.
    • -s : Default graph step in second. (default: 10)
      • You can see the step for your RRD file using:
        $ rrdtool info [rrd file] | grep step
        step = 300
        
  4. Setup Grafana and Simple JSON Datastore plugin.

    See Grafana documentation

  5. Create datasource.

Contributing

  1. Install librrd-dev (rrdtool).

    See the Usage section.

  2. Clone the repository.

  3. Commit your code on a separate branch.

  4. Create a pull request.

License

MIT