Directory below <code>/var/lib</code> to store metrics.This directory will be created automatically using systemd's StateDirectory mechanism when <a href="/nixpkgs/option/services.prometheus.pushgateway.persistMetrics"><a href="/nixpkgs/option/services.prometheus.pushgateway.persistMetrics" rel="nofollow">services.prometheus.pushgateway.persistMetrics</a></a> is enabled.

services.prometheus.pushgateway.stateDir

Directory below /var/lib to store metrics