grafana: add datasource input and templating for job/instance

Author: Illine

dashboards/file-d.json

@@ -1304,7 +1304,7 @@
               },
               "editorMode": "code",
               "exemplar": true,
-              "expr": "sum(avg_over_time(file_d_pipeline_${pipeline}_event_pool_in_use_events{job=\"$job\", instance=~\"$instance\"}[$__rate_interval]))",
+              "expr": "sum(avg_over_time(file_d_pipeline_${pipeline}_event_pool_in_use_events{job=\"$job\", instance=~\"$instance\"}[$__interval]))",
               "hide": false,
               "interval": "",
               "intervalFactor": 1,
@@ -1790,7 +1790,7 @@
               },
               "editorMode": "code",
               "exemplar": true,
-              "expr": "sum(avg_over_time(file_d_pipeline_${pipeline}_batcher_workers_in_progress{job=\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance)",
+              "expr": "sum(avg_over_time(file_d_pipeline_${pipeline}_batcher_workers_in_progress{job=\"$job\", instance=~\"$instance\"}[$__interval])) by (instance)",
               "hide": false,
               "interval": "",
               "legendFormat": "{{instance}}",
@@ -1804,7 +1804,7 @@
               },
               "editorMode": "code",
               "exemplar": true,
-              "expr": "sum(avg_over_time(file_d_pipeline_${pipeline}_batcher_workers_in_progress{job=\"$job\", instance=~\"$instance\"}[$__rate_interval]))",
+              "expr": "sum(avg_over_time(file_d_pipeline_${pipeline}_batcher_workers_in_progress{job=\"$job\", instance=~\"$instance\"}[$__interval]))",
               "hide": false,
               "interval": "",
               "intervalFactor": 1,
@@ -3335,7 +3335,7 @@
               },
               "editorMode": "code",
               "exemplar": true,
-              "expr": "go_memstats_heap_idle_bytes{} - go_memstats_heap_released_bytes{job=\"$job\", instance=~\"$instance\"}",
+              "expr": "go_memstats_heap_idle_bytes{job=\"$job\", instance=~\"$instance\"} - go_memstats_heap_released_bytes{job=\"$job\", instance=~\"$instance\"}\n",
               "interval": "",
               "legendFormat": "{{instance}}",
               "range": true,