Prometheus exporter for OpenNebula clusters, written in Go. The exporter exposes the metrics of the hosts in a cluster, through the GOCA API of the OpenNebula Frontend. The metrics are provided both per host and summed per cluster to give you a quick overview of your OpenNebula cluster as a whole. While the cluster metrics aren't strictly necessary as they can be calculated using the host metrics, they are added for convenience.
You can run the one exporter with the -c flag pointing to its configuration file. If you don't include a configuration file, the exporter will use the config.yml in the current directory, so ./one_exporter and ./one_exporter -c config.yml are identical.
Use the --help flag for more information.
The one exporter uses the following parameters in the configuration file.
# credentials to access OpenNebula
user: oneadmin
password: oneadmin
# OpenNebula frontend endpoint
# an empty endpoint will default to http://localhost:2633/RPC2
# endpoint:
# frequency to retrieve metrics in seconds. defaults to 60.
# interval: 60
# host and port to run the exporter on
host: 0.0.0.0
port: 9621
# exporter uri to publish on. defaults to /metrics
# path: /metrics