toggled-db

Local database for the controller core: PostgreSQL 17 with the timescaledb and
timescaledb-toolkit extensions, from the official PostgreSQL and Timescale apt
repositories. Listens on 127.0.0.1:5432 only. Data lives in $SNAPCOMMON/pgdata
and survives refreshes. The core gets its credentials through the
"db-credentials" content interface (a directory with a DATABASEURL file).