dashboard: set default InfluxDB measurement

Set default InfluxDB measurement to "tarantool_http". After this patch,
it will be possible to import dashboard with
community.ansible.ansible_dashboard, if Telegraf is configured to
collect Tarantool metrics with http plugin and "tarantool_" prefix.

This patch also changes all examples measurement names
to "tarantool_http".

Closes #138

Author: DifferentialOrange

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Changed
 - Set default Prometheus job to `tarantool`
+- Set default InfluxDB measurement to `tarantool_http`
 
 
 ## [1.3.0] - 2022-06-29

Makefile

@@ -1,6 +1,7 @@
 JOB ?= tarantool
 RATE_TIME_RANGE ?= 2m
 POLICY ?= autogen
+MEASUREMENT ?= tarantool_http
 OUTPUT_STATIC_DASHBOARD ?= dashboard.json
 
 .PHONY: build-deps
@@ -38,10 +39,7 @@ ifndef DATASOURCE
 		false
 endif
 	# POLICY is optional, default is "autogen"
-ifndef MEASUREMENT
-	@echo 1>&2 "MEASUREMENT must be set"
-		false
-endif
+	# MEASUREMENT is optional, default is "tarantool_http"
 	jsonnet -J ./vendor -J . \
 		--ext-str DATASOURCE=${DATASOURCE} \
 		--ext-str POLICY=${POLICY} \

README.md

@@ -76,7 +76,7 @@ You can also interact with Prometheus at [localhost:9090](http://localhost:9090/
 
 To set up an InfluxDB dashboard for monitoring example app, use the following variables:
 
-- `Measurement`: `tarantool_app_http`;
+- `Measurement`: `tarantool_http`;
 - `Policy`: `default`.
 
 To set up an Prometheus dashboard for monitoring example app, use the following variables:
@@ -134,7 +134,7 @@ Variables for Prometheus targets:
 Variables for InfluxDB targets:
 - `DATASOURCE`: name of a InfluxDB data source;
 - `POLICY` (optional, default `autogen`): InfluxDB metrics retention policy;
-- `MEASUREMENT`: name of a InfluxDB measurement with your application metrics;
+- `MEASUREMENT` (optional, default `tarantool_http`): name of a InfluxDB measurement with your application metrics;
 - `OUTPUT_STATIC_DASHBOARD` (optional, default `dashboard.json`): compiled dashboard file.
 
 You can also compile configurable Prometheus dashboard template (the same we publish to

dashboard/build/influxdb/dashboard.libsonnet

@@ -18,6 +18,7 @@ dashboard_raw(
   name='INFLUXDB_MEASUREMENT',
   label='Measurement',
   type='constant',
+  value='tarantool_http',
   description='InfluxDB Tarantool metrics measurement'
 ).addInput(
   name='INFLUXDB_POLICY',

dashboard/build/influxdb/tdg_dashboard.libsonnet

@@ -18,6 +18,7 @@ tdg_dashboard_raw(
   name='INFLUXDB_MEASUREMENT',
   label='Measurement',
   type='constant',
+  value='tarantool_http',
   description='InfluxDB Tarantool metrics measurement'
 ).addInput(
   name='INFLUXDB_POLICY',

doc/monitoring/grafana_dashboard.rst

@@ -123,7 +123,7 @@ to Telegraf configuration including each Tarantool instance metrics URL:
         insecure_skip_verify = true
         interval = "10s"
         data_format = "json"
-        name_prefix = "example_project_"
+        name_prefix = "tarantool_"
         fieldpass = ["value"]
 
 Be sure to include each label key as ``label_pairs_<key>`` so it will be
@@ -172,11 +172,11 @@ For TDG dashboard, please use
         insecure_skip_verify = true
         interval = "10s"
         data_format = "json"
-        name_prefix = "example_project_"
+        name_prefix = "tarantool_"
         fieldpass = ["value"]
 
 If you connect Telegraf instance to InfluxDB storage, metrics will be stored
-with ``"<name_prefix>http"`` measurement (``"example_project_http"`` in our example).
+with ``"<name_prefix>http"`` measurement (``"tarantool_http"`` in our example).
 
 .. _monitoring-grafana_dashboard-import:
 

example_cluster/telegraf/telegraf.conf

@@ -26,7 +26,7 @@
     insecure_skip_verify = true
     interval = "10s"
     data_format = "json"
-    name_prefix = "tarantool_app_"
+    name_prefix = "tarantool_"
     fieldpass = ["value"]
 
 [[inputs.internal]]

example_cluster/telegraf/telegraf.localapp.conf

@@ -26,7 +26,7 @@
     insecure_skip_verify = true
     interval = "10s"
     data_format = "json"
-    name_prefix = "tarantool_app_"
+    name_prefix = "tarantool_"
     fieldpass = ["value"]
 
 [[inputs.internal]]

example_cluster/telegraf/telegraf.tdg.conf

@@ -34,7 +34,7 @@
     insecure_skip_verify = true
     interval = "10s"
     data_format = "json"
-    name_prefix = "tarantool_app_"
+    name_prefix = "tarantool_"
     fieldpass = ["value"]
 
 [[inputs.internal]]

tests/InfluxDB/dashboard_compiled.json

@@ -12,7 +12,8 @@
          "description": "InfluxDB Tarantool metrics measurement",
          "label": "Measurement",
          "name": "INFLUXDB_MEASUREMENT",
-         "type": "constant"
+         "type": "constant",
+         "value": "tarantool_http"
       },
       {
          "description": "InfluxDB Tarantool metrics policy",