Fossil

Fossil is a proxy for Graphite.

Why would I need a proxy?

Well if you're confortable with the idea of pushing data in clear over the wire without cipher them, ok then. But it's an issue for us 😄.

Fossil is a drop-down replacement for your Graphite deployment. It will listen TCP connection on the port 2003 and translate them into sensision before flush them in a directory.

We use it in combination with Beamium. This combination allow us to send our data in a ciphered way.

Installation

Dependencies

Before install fossil you need some tools:

Dep
Go
make

Install from sources

First, you have to clone it:

git clone https://github.com/ovh/fossil.git $GOPATH/src/github.com/ovh/fossil

Go into the fresh installation:

cd $GOPATH/src/github.com/ovh/fossil

Install project dependencies using Dep:

dep ensure

Now, the best part compilation:

make release

Finally, install fossil:

sudo make install

NB: make install will also enable a systemd fossil service, to start fossil you just need to do systemctl start fossil.service

Usage

$ fossil --help
Fossil fossil Graphite to beamium forwarder

Usage:
  fossil [flags]
  fossil [command]

Available Commands:
  version     Print the version number

Flags:
  -b, --batch int          batch count per file (default 10000)
      --config string      config file to use
  -d, --directory string   directory to write metrics file (default "./sources")
  -l, --listen string      listen address (default ":2003")
  -t, --timeout int        batch timeout for flushing datapoints (default 5)
  -v, --verbose            verbose output

Use "fossil [command] --help" for more information about a command.

Configuration

Fossil configuration file is in JSON format. By default Fossil will look for a configuration file named: config.json in these directories:

/etc/fossil/
$HOME/.fossil
.

Here is an example :

{
  "listen": ":2003",
  "verbose": "true",
  "batch": "10000",
  "timeout": "5",
  "directory": "/home/fossil/sources/"
}

find a sample in the config directory of this repository

Example

fossil -d /opt/beamium/source

In this example fossil, will listen TCP connection on port 2003 and will translate all graphite datapoints into sensision and flush them into /opt/beamium/source directory.

The flush is realized all 5 seconds or all 10000 datapoints.