Installation Options
Besides freedom of choosing from a set of metric measurements storage options one can also choose how is the monitoring configuration (connect strings, metric sets and intervals) going to be stored.
Configuration database based operation
This is the original central pull mode depicted on the architecture diagram. It requires a small schema to be rolled out on any Postgres database accessible to the metrics gathering daemon, which will hold the connect strings, metric definition SQLs and preset configurations and some other more minor attributes. For rollout details see the custom installation chapter.
The default Docker demo image cybertecpostgresql/pgwatch-demo uses this approach.
File based operation
One can deploy the gatherer daemon(s) decentralized with sources to be monitored and metrics and presets definitions defined in simple YAML files. In that case there is no need for the central Postgres configuration database. See sample.sources.yaml And sample.metrics.yaml config files for example.
Note
You can use folder of YAML files instead of a single file so that you can easily manage things via Ansible, for example.