Grafana is installed alongside Prometheus, on the same server. Those are the known instances:
- https://grafana.torproject.org/ - internal server
- https://grafana2.torproject.org/ - external server
See also the Prometheus monitored services.
Grafana was installed with Puppet using the upstream Debian package, following a debate regarding the merits of Debian packages versus Docker containers when neither are trusted, see this comment for a summary.
Some manual configuration was performed after the install. An admin
password reset on first install, stored in
hosts-extra-info. Everything else is configured in Puppet.
Grafana dashboards, in particular, live in
modules/profile/files/grafana/dashboards, which is a copy of
anarcat's grafana-dashboards repository. The
there contains more instructions on how to add and update
dashboards. In general, dashboards must not be modified directly
through the web interface, at least not without being exported back
into the repository.
Updating a Grafana dashboard
As mentioned above, the Grafana dashboards are maintained by Puppet. So while new dashboard can be created and edited in the Grafana web interface, changes will be lost when Puppet ships a new version of the dashboard.
You therefore need to make sure you update the Dashboard in git before leaving. New dashboards not in git should be fairly safe, but please do also commit them to git so we have a proper revisioned history of their deployment. It's also the right way to make sure they are usable across other instances of Grafana. Finally, they are also easier to share and collaborate on that way.
See the grafana-dashboards repository for instructions on how to export dashboards into git.