InfluxDB is an open-source, distributed, time series database.
Deploy the telegraf charm, and the required influxDB charm with the following:
juju deploy telegraf
juju deploy cs:~chris.macnaughton/influxdb
Add the relation between the two charms:
juju add-relation influxdb telegraf
Expose the influxdb charm:
juju expose influxdb
You can then access the influxdb interface at the public interface shown from juju status.