chore: Replace VERSION file with data.yaml

Makefile

@@ -2,9 +2,9 @@ FLAGS =
 TESTENVVAR =
 REGISTRY ?= gcr.io/k8s-staging-kube-state-metrics
 TAG_PREFIX = v
-VERSION = $(shell cat VERSION)
+VERSION = $(shell gomplate -d config=./data.yaml --in '{{ (datasource "config").version }}')
 TAG ?= $(TAG_PREFIX)$(VERSION)
-LATEST_RELEASE_BRANCH := release-$(shell grep -ohE "[0-9]+.[0-9]+" VERSION)
+LATEST_RELEASE_BRANCH := release-$(shell echo $(VERSION) | grep -ohE "[0-9]+.[0-9]+")
 BRANCH = $(strip $(shell git rev-parse --abbrev-ref HEAD))
 DOCKER_CLI ?= docker
 PROMTOOL_CLI ?= promtool
@@ -151,17 +151,17 @@ examples/prometheus-alerting-rules/alerts.yaml: jsonnet $(shell find jsonnet | g
 
 examples: examples/standard examples/autosharding examples/daemonsetsharding mixin
 
-examples/standard: jsonnet $(shell find jsonnet | grep ".libsonnet") scripts/standard.jsonnet scripts/vendor VERSION
+examples/standard: jsonnet $(shell find jsonnet | grep ".libsonnet") scripts/standard.jsonnet scripts/vendor
 	mkdir -p examples/standard
 	jsonnet -J scripts/vendor -m examples/standard --ext-str version="$(VERSION)" scripts/standard.jsonnet | xargs -I{} sh -c 'cat {} | gojsontoyaml > `echo {} | sed "s/\(.\)\([A-Z]\)/\1-\2/g" | tr "[:upper:]" "[:lower:]"`.yaml' -- {}
 	find examples -type f ! -name '*.yaml' -delete
 
-examples/autosharding: jsonnet $(shell find jsonnet | grep ".libsonnet") scripts/autosharding.jsonnet scripts/vendor VERSION
+examples/autosharding: jsonnet $(shell find jsonnet | grep ".libsonnet") scripts/autosharding.jsonnet scripts/vendor
 	mkdir -p examples/autosharding
 	jsonnet -J scripts/vendor -m examples/autosharding --ext-str version="$(VERSION)" scripts/autosharding.jsonnet | xargs -I{} sh -c 'cat {} | gojsontoyaml > `echo {} | sed "s/\(.\)\([A-Z]\)/\1-\2/g" | tr "[:upper:]" "[:lower:]"`.yaml' -- {}
 	find examples -type f ! -name '*.yaml' -delete
 
-examples/daemonsetsharding: jsonnet $(shell find jsonnet | grep ".libsonnet") scripts/daemonsetsharding.jsonnet scripts/vendor VERSION
+examples/daemonsetsharding: jsonnet $(shell find jsonnet | grep ".libsonnet") scripts/daemonsetsharding.jsonnet scripts/vendor
 	mkdir -p examples/daemonsetsharding
 	jsonnet -J scripts/vendor -m examples/daemonsetsharding --ext-str version="$(VERSION)" scripts/daemonsetsharding.jsonnet | xargs -I{} sh -c 'cat {} | gojsontoyaml > `echo {} | sed "s/\(.\)\([A-Z]\)/\1-\2/g" | tr "[:upper:]" "[:lower:]"`.yaml' -- {}
 	find examples -type f ! -name '*.yaml' -delete

RELEASE.md

@@ -14,10 +14,11 @@ Maintaining the release branches for older minor releases happens on a best effo
 
 ## Prepare your release
 
-* Bump the version in the `VERSION` file in the root of the repository.
+* Update the [data.yaml](data.yaml)
+  * Update the compat list
+  * Update the version key to refer to your new release
 * Run `make examples`, which will re-generate all example manifests to use the new version.
 * Make a PR to update:
-  * Update the [[`data.yaml`](data.yaml)
   * Run `make generate`, which will update the compatibility matrix in README.md
   * Changelog entry
     * Only include user relevant changes

data.yaml

@@ -1,3 +1,8 @@
+# The purpose of this config is to keep all versions in a single file and make them machine accessible
+
+# Marks the latest release
+version: "2.12.0"
+
 # List at max 5 releases here + the main branch
 compat:
   - version: "v2.8.2"