Merge pull request #2739 from fpetkovski/client-go-version

feat: Add info metric for client-go version

Author: k8s-ci-robot

Makefile

@@ -20,10 +20,12 @@ MULTI_ARCH_IMG = $(IMAGE)-$(ARCH)
 USER ?= $(shell id -u -n)
 HOST ?= $(shell hostname)
 MARKDOWNLINT_CLI2_VERSION = 0.18.1
+CLIENT_GO_VERSION = $(shell go list -m -f '{{.Version}}' k8s.io/client-go)
+KSM_MODULE = $(shell go list -m)
 
 DOCKER_CLI ?= docker
 PROMTOOL_CLI ?= promtool
-GOMPLATE_CLI ?= go tool github.com/hairyhenderson/gomplate/v4/cmd/gomplate 
+GOMPLATE_CLI ?= go tool github.com/hairyhenderson/gomplate/v4/cmd/gomplate
 GOJSONTOYAML_CLI ?= go tool github.com/brancz/gojsontoyaml
 EMBEDMD_CLI ?= go tool github.com/campoy/embedmd
 JSONNET_CLI ?= go tool github.com/google/go-jsonnet/cmd/jsonnet
@@ -69,7 +71,7 @@ doccheck: generate validate-template
 	@echo OK
 
 build-local:
-	GOOS=$(OS) GOARCH=$(ARCH) CGO_ENABLED=0 go build -ldflags "-s -w -X ${PKG}/version.Version=${TAG} -X ${PKG}/version.Revision=${GIT_COMMIT} -X ${PKG}/version.Branch=${BRANCH} -X ${PKG}/version.BuildUser=${USER}@${HOST} -X ${PKG}/version.BuildDate=${BUILD_DATE}" -o kube-state-metrics
+	GOOS=$(OS) GOARCH=$(ARCH) CGO_ENABLED=0 go build -ldflags "-s -w -X ${PKG}/version.Version=${TAG} -X ${PKG}/version.Revision=${GIT_COMMIT} -X ${PKG}/version.Branch=${BRANCH} -X ${PKG}/version.BuildUser=${USER}@${HOST} -X ${PKG}/version.BuildDate=${BUILD_DATE} -X ${PKG}/version.BuildDate=${BUILD_DATE} -X ${KSM_MODULE}/pkg/app.ClientGoVersion=${CLIENT_GO_VERSION}" -o kube-state-metrics
 
 build: kube-state-metrics
 

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/gobuffalo/flect v1.0.3
 	github.com/google/go-cmp v0.7.0
 	github.com/oklog/run v1.2.0
-	github.com/prometheus/client_golang v1.23.2
+	github.com/prometheus/client_golang v1.23.3-0.20251103151724-a5ae20370e5e
 	github.com/prometheus/client_model v0.6.2
 	github.com/prometheus/common v0.67.2
 	github.com/prometheus/exporter-toolkit v0.15.0
@@ -188,7 +188,7 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/prometheus/procfs v0.19.2 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/ryanuber/go-glob v1.0.0 // indirect
 	github.com/sagikazarmark/locafero v0.11.0 // indirect

go.sum

@@ -452,8 +452,8 @@ github.com/keybase/go-keychain v0.0.1 h1:way+bWYa6lDppZoZcgMbYsvC7GxljxrskdNInRt
 github.com/keybase/go-keychain v0.0.1/go.mod h1:PdEILRW3i9D8JcdM+FmY6RwkHGnhHxXwkPPMeUgOK1k=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
-github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
+github.com/klauspost/compress v1.18.1 h1:bcSGx7UbpBqMChDtsF28Lw6v/G94LPrrbMbdC3JH2co=
+github.com/klauspost/compress v1.18.1/go.mod h1:ZQFFVG+MdnR0P+l6wpXgIL4NTtwiKIdBnrBd8Nrxr+0=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
@@ -546,8 +546,8 @@ github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5Fsn
 github.com/prometheus/client_golang v1.4.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_golang v1.11.1/go.mod h1:Z6t4BnS23TR94PD6BsDNk8yVqroYurpAkEiz0P2BEV0=
-github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
-github.com/prometheus/client_golang v1.23.2/go.mod h1:Tb1a6LWHB3/SPIzCoaDXI4I8UHKeFTEQ1YCr+0Gyqmg=
+github.com/prometheus/client_golang v1.23.3-0.20251103151724-a5ae20370e5e h1:VdOG0GiDJykWb5QSEdJzrwd1XVQy6kuBkNhcPmwwQsQ=
+github.com/prometheus/client_golang v1.23.3-0.20251103151724-a5ae20370e5e/go.mod h1:Cd8aF6pZc1Z65dR58mjfsi9nymQTAgZFCiJYzDNsYDo=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
@@ -567,8 +567,8 @@ github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsT
 github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+GxbHq6oeK9A=
 github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=
 github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
-github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzMyRg=
-github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
+github.com/prometheus/procfs v0.19.2 h1:zUMhqEW66Ex7OXIiDkll3tl9a1ZdilUOd/F6ZXw4Vws=
+github.com/prometheus/procfs v0.19.2/go.mod h1:M0aotyiemPhBCM0z5w87kL22CxfcH05ZpYlu+b4J7mw=
 github.com/protocolbuffers/txtpbfmt v0.0.0-20250129171521-feedd8250727 h1:A8EM8fVuYc0qbVMw9D6EiKdKTIm1SmLvAWcCc2mipGY=
 github.com/protocolbuffers/txtpbfmt v0.0.0-20250129171521-feedd8250727/go.mod h1:VmWrOlMnBZNtToCWzRlZlIXcJqjo0hS5dwQbRD62gL8=
 github.com/redis/go-redis/v9 v9.7.3 h1:YpPyAayJV+XErNsatSElgRZZVCwXX9QzkKYNvO7x0wM=

pkg/app/server.go

@@ -63,6 +63,10 @@ import (
 	"k8s.io/kube-state-metrics/v2/pkg/util/proc"
 )
 
+// ClientGoVersion is the version for the client-go library used by KSM. This
+// value is set at build time using go build flags.
+var ClientGoVersion = "unknown"
+
 const (
 	metricsPath = "/metrics"
 	healthzPath = "/healthz"
@@ -85,7 +89,10 @@ func RunKubeStateMetricsWrapper(ctx context.Context, opts *options.Options) erro
 // which implements customresource.RegistryFactory and pass all factories into this function.
 func RunKubeStateMetrics(ctx context.Context, opts *options.Options) error {
 	ksmMetricsRegistry := prometheus.NewRegistry()
-	ksmMetricsRegistry.MustRegister(versionCollector.NewCollector("kube_state_metrics"))
+	ksmMetricsRegistry.MustRegister(versionCollector.NewCollector("kube_state_metrics", versionCollector.WithExtraConstLabels(
+		prometheus.Labels{"client_go_version": ClientGoVersion},
+	)))
+
 	durationVec := promauto.With(ksmMetricsRegistry).NewHistogramVec(
 		prometheus.HistogramOpts{
 			Name:        "http_request_duration_seconds",