Yes to both, Altinity maintains the ClickHouse Grafana plugin https://altinity.com/blog/2019/12/28/creating-beautiful-grafana-dashboards-on-clickhouse-a-tutoria

Yes to both, Altinity maintains the ClickHouse Grafana plugin https://altinity.com/blog/2019/12/28/creating-beautiful-grafana-dashboards-on-clickhouse-a-tutorial https://altinity.com/blog/2019/12/28/creating-beautiful-graf... And Superset has a recommendation of a ClickHouse connector https://superset.apache.org/docs/databases/clickhouse https://superset.apache.org/docs/databases/clickhouse