Add dremio dashboard

dremio/helm/dremio/templates/dashboards.yaml

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+apiVersion: platform.plural.sh/v1alpha1
+kind: Dashboard
+metadata:
+  name: dremio-postgres
+spec:
+  name: postgres # name of the dashboard in the console UI
+  description: Monitoring for hasura's postgres db # short description
+  timeslices: [30m, 1h, 2h, 1d] # durations options to allow display for
+  defaultTime: 30m
+  labels: # global values to slice the dashboard further
+  - name: instance
+    query:
+      query: pg_stat_database_tup_fetched{namespace="{{ .Release.Namespace }}"}
+      label: instance
+  graphs:
+  - queries: # list of grouped prometheus queries per graph
+    - query: SUM(pg_stat_database_tup_fetched{instance=~"$instance"})
+      legend: tuples fetched
+    - query: SUM(pg_stat_database_tup_inserted{instance=~"$instance"})
+      legend: tuples inserted
+    - query: SUM(pg_stat_database_tup_updated{instance=~"$instance"})
+      legend: tuples updated
+    name: Storage Performance
+  - queries:
+    - query: pg_settings_max_connections{instance="$instance"}
+      legend: connections
+    name: Max Connections
+  - queries:
+    - query: avg(rate(process_cpu_seconds_total{instance="$instance"}[5m]) * 1000)
+      legend: seconds
+    name: CPU time
+  - queries:
+    - query: avg(rate(process_resident_memory_bytes{instance="$instance"}[5m]))
+      legend: resident mem
+    - query: avg(rate(process_virtual_memory_bytes{instance="$instance"}[5m]))
+      legend: process mem
+    format: bytes
+    name: Memory utilization
+  - queries:
+    - query: process_open_fds{instance="$instance"}
+      legend: fds
+    name: Open file descriptors
+  - queries:
+    - query: pg_settings_max_wal_size_bytes{instance="$instance"}
+      legend: WAL size
+    name: Max WAL size
+  - queries:
+    - query: irate(pg_stat_database_xact_commit{instance="$instance"}[5m])
+      legend: commits
+    - query: irate(pg_stat_database_xact_rollback{instance="$instance"}[5m])
+      legend: rollbacks
+    name: Transactions
+  - queries:
+    - query: pg_stat_database_blks_hit{instance="$instance"} / (pg_stat_database_blks_read{instance="$instance"} + pg_stat_database_blks_hit{instance="$instance"})
+      legend: hit rate
+    name: Cache hit rate