Add command to clean elasticsearch

Makefile

@@ -95,6 +95,15 @@ install-helm-readme:
 helm-readme:
 	./scripts/generate_helm_readme.sh
 
+#: Cleans Elasticsearch data, works only with default ES port. The command may take a very long time to complete
+clean-elasticsearch:
+	@indices=$(shell curl -s -X GET "http://localhost:9200/_cat/indices" | awk '{print $$3}') ;\
+	for index in $$indices ; do \
+		echo "Deleting all documents from index $$index" ;\
+		curl -X POST "http://localhost:9200/$$index/_delete_by_query?conflicts=proceed" -H "Content-Type: application/json" -d '{"query": {"match_all": {}}}' ;\
+		echo "" ;\
+	done
+
 #: Shows info about available commands
 help:
 	@grep -B1 -E "^[a-zA-Z0-9_-]+\:([^\=]|$$)" Makefile \

README.md

@@ -104,7 +104,7 @@ All configuration variables can be checked in the [config directory](./config/).
 #### Available Commands
 
 <!--- GENERATED by ./scripts/add_descriptions_to_readme.sh --->
-
+ 
 - `make all`: Builds binary executables for all OS (Win, Darwin, Linux).
 - `make run`: Runs the Go Exporter application.
 - `make build-linux`: Builds a binary executable for Linux.
@@ -124,8 +124,9 @@ All configuration variables can be checked in the [config directory](./config/).
 - `make minify`: Minifies the binary executables.
 - `make install-helm-readme`: Installs readme-generator-for-helm tool.
 - `make helm-readme`: Generates Helm chart README.md file.
+- `make clean-elasticsearch`: Cleans Elasticsearch data, works only with default ES port. The command may take a very long time to complete.
 - `make help`: Shows info about available commands.
-
+ 
 <!--- **************************************************** --->
 
 #### File Structure
@@ -136,87 +137,91 @@ The binary executables are saved in the out directory.
 #### Example Usage
 
 <!--- GENERATED by ./scripts/add_descriptions_to_readme.sh --->
-
+ 
 Builds binary executables for all OS (Win, Darwin, Linux):
-
+ 
     make all
-
+ 
 Runs the Go Exporter application:
-
+ 
     make run
-
+ 
 Builds a binary executable for Linux:
-
+ 
     make build-linux
-
+ 
 Builds a binary executable for Darwin:
-
+ 
     make build-darwin
-
+ 
 Builds a binary executable for Windows:
-
+ 
     make build-windows
-
+ 
 Builds a Docker image for the Go Exporter application:
-
+ 
     make build-docker
-
+ 
 Builds a multi-arch Docker image (`amd64` and `arm64`):
-
+ 
     make build-docker-multi
-
+ 
 Deletes all binary executables in the out directory:
-
+ 
     make clean
-
+ 
 Runs all tests:
-
+ 
     make test
-
+ 
 Displays test coverage report:
-
+ 
     make test-coverage
-
+ 
 Starts a Docker-compose configuration:
-
+ 
     make compose
-
+ 
 Starts a Docker-compose configuration until it's ready:
-
+ 
     make wait-for-compose
-
+ 
 Stops a Docker-compose configuration:
-
+ 
     make compose-down
-
+ 
 Verifies the metrics from the Go Exporter application:
-
+ 
     make verify-metrics
-
+ 
 Pulls the Docker image from the registry:
-
+ 
     make pull
-
+ 
 Shows logs from the Docker-compose configuration:
-
+ 
     make logs
-
+ 
 Minifies the binary executables:
-
+ 
     make minify
-
+ 
 Installs readme-generator-for-helm tool:
-
+ 
     make install-helm-readme
-
+ 
 Generates Helm chart README.md file:
-
+ 
     make helm-readme
-
+
+Cleans Elasticsearch data, works only with default ES port. The command may take a very long time to complete:
+
+    make clean-elasticsearch
+
 Shows info about available commands:
-
+ 
     make help
-
+ 
 <!--- **************************************************** --->
 
 ## Helper Scripts