Update build

.circleci/config.yml

@@ -7,7 +7,7 @@ executors:
   # should also be updated.
   golang:
     docker:
-      - image: cimg/go:1.21
+      - image: cimg/go:1.22
   arm:
     machine:
       image: ubuntu-2204:current
@@ -60,7 +60,7 @@ jobs:
     machine:
       image: ubuntu-2204:current
     environment:
-      DOCKER_TEST_IMAGE_NAME: quay.io/prometheus/golang-builder:1.21-base
+      DOCKER_TEST_IMAGE_NAME: quay.io/prometheus/golang-builder:1.22-base
       REPO_PATH: github.com/prometheus/node_exporter
     steps:
       - prometheus/setup_environment

.promu-cgo.yml

@@ -1,14 +1,13 @@
 go:
     # Whenever the Go version is updated here, .circle/config.yml and
     # .promu.yml should also be updated.
-    version: 1.21
+    version: 1.22
     cgo: true
 repository:
     path: github.com/prometheus/node_exporter
 build:
     binaries:
         - name: node_exporter
-    flags: -a -tags 'netgo osusergo static_build'
     ldflags: |
         -X github.com/prometheus/common/version.Version={{.Version}}
         -X github.com/prometheus/common/version.Revision={{.Revision}}

.promu.yml

@@ -1,13 +1,12 @@
 go:
     # Whenever the Go version is updated here, .circle/config.yml and
     # .promu-cgo.yml should also be updated.
-    version: 1.21
+    version: 1.22
 repository:
     path: github.com/prometheus/node_exporter
 build:
     binaries:
         - name: node_exporter
-    flags: -a -tags 'netgo osusergo static_build'
     ldflags: |
         -X github.com/prometheus/common/version.Version={{.Version}}
         -X github.com/prometheus/common/version.Revision={{.Revision}}

collector/cpu_linux.go

@@ -21,6 +21,7 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
+	"slices"
 	"strconv"
 	"sync"
 
@@ -31,7 +32,6 @@ import (
 	"github.com/prometheus/procfs"
 	"github.com/prometheus/procfs/sysfs"
 	"golang.org/x/exp/maps"
-	"golang.org/x/exp/slices"
 )
 
 type cpuCollector struct {

go.mod

@@ -1,12 +1,12 @@
 module github.com/prometheus/node_exporter
 
-go 1.20
+go 1.21
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/beevik/ntp v1.3.1
 	github.com/coreos/go-systemd/v22 v22.5.0
-	github.com/dennwc/btrfs v0.0.0-20230312211831-a1f570bd01a1
+	github.com/dennwc/btrfs v0.0.0-20240418142341-0167142bde7a
 	github.com/ema/qdisc v1.0.0
 	github.com/go-kit/log v0.2.1
 	github.com/godbus/dbus/v5 v5.1.0
@@ -23,13 +23,13 @@ require (
 	github.com/opencontainers/selinux v1.11.0
 	github.com/prometheus-community/go-runit v0.1.0
 	github.com/prometheus/client_golang v1.19.0
-	github.com/prometheus/client_model v0.6.0
-	github.com/prometheus/common v0.48.0
+	github.com/prometheus/client_model v0.6.1
+	github.com/prometheus/common v0.53.0
 	github.com/prometheus/exporter-toolkit v0.11.0
-	github.com/prometheus/procfs v0.13.0
+	github.com/prometheus/procfs v0.14.0
 	github.com/safchain/ethtool v0.3.0
-	golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1
-	golang.org/x/sys v0.18.0
+	golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f
+	golang.org/x/sys v0.19.0
 	howett.net/plist v1.0.1
 )
 
@@ -52,8 +52,8 @@ require (
 	go.uber.org/multierr v1.6.0 // indirect
 	golang.org/x/crypto v0.21.0 // indirect
 	golang.org/x/net v0.23.0 // indirect
-	golang.org/x/oauth2 v0.16.0 // indirect
-	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/oauth2 v0.18.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect

go.sum

@@ -9,13 +9,14 @@ github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6r
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cilium/ebpf v0.12.3 h1:8ht6F9MquybnY97at+VDZb3eQQr8ev79RueWeVaEcG4=
+github.com/cilium/ebpf v0.12.3/go.mod h1:TctK1ivibvI3znr66ljgi4hqOT8EYQjz1KWBfb1UVgM=
 github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dennwc/btrfs v0.0.0-20230312211831-a1f570bd01a1 h1:ue4Es4Xzz255hWQ7NAWzZxuXG+YOV7URzzusLLSe0zU=
-github.com/dennwc/btrfs v0.0.0-20230312211831-a1f570bd01a1/go.mod h1:MYsOV9Dgsec3FFSOjywi0QK5r6TeBbdWxdrMGtiYXHA=
+github.com/dennwc/btrfs v0.0.0-20240418142341-0167142bde7a h1:KfFsGLJFVdCXlySUkV2FmxNtmiztpJb6tV+XYBmmv8E=
+github.com/dennwc/btrfs v0.0.0-20240418142341-0167142bde7a/go.mod h1:MYsOV9Dgsec3FFSOjywi0QK5r6TeBbdWxdrMGtiYXHA=
 github.com/dennwc/ioctl v1.0.0 h1:DsWAAjIxRqNcLn9x6mwfuf2pet3iB7aK90K4tF16rLg=
 github.com/dennwc/ioctl v1.0.0/go.mod h1:ellh2YB5ldny99SBU/VX7Nq0xiZbHphf1DrtHxxjMk0=
 github.com/ema/qdisc v1.0.0 h1:EHLG08FVRbWLg8uRICa3xzC9Zm0m7HyMHfXobWFnXYg=
@@ -48,7 +49,9 @@ github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX
 github.com/jsimonetti/rtnetlink v1.4.1 h1:JfD4jthWBqZMEffc5RjgmlzpYttAVw1sdnmiNaPO3hE=
 github.com/jsimonetti/rtnetlink v1.4.1/go.mod h1:xJjT7t59UIZ62GLZbv6PLLo8VFrostJMPBAheR6OM8w=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lufia/iostat v1.2.1 h1:tnCdZBIglgxD47RyD55kfWQcJMGzO+1QBziSQfesf2k=
 github.com/lufia/iostat v1.2.1/go.mod h1:rEPNA0xXgjHQjuI5Cy05sLlS2oRcSlWHRLrvh/AQ+Pg=
 github.com/mattn/go-xmlrpc v0.0.3 h1:Y6WEMLEsqs3RviBrAa1/7qmbGB7DVD3brZIbqMbQdGY=
@@ -73,15 +76,16 @@ github.com/prometheus-community/go-runit v0.1.0 h1:uTWEj/Fn2RoLdfg/etSqwzgYNOYPr
 github.com/prometheus-community/go-runit v0.1.0/go.mod h1:AvJ9Jo3gAFu2lbM4+qfjdpq30FfiLDJZKbQ015u08IQ=
 github.com/prometheus/client_golang v1.19.0 h1:ygXvpU1AoN1MhdzckN+PyD9QJOSD4x7kmXYlnfbA6JU=
 github.com/prometheus/client_golang v1.19.0/go.mod h1:ZRM9uEAypZakd+q/x7+gmsvXdURP+DABIEIjnmDdp+k=
-github.com/prometheus/client_model v0.6.0 h1:k1v3CzpSRUTrKMppY35TLwPvxHqBu0bYgxZzqGIgaos=
-github.com/prometheus/client_model v0.6.0/go.mod h1:NTQHnmxFpouOD0DpvP4XujX3CdOAGQPoaGhyTchlyt8=
-github.com/prometheus/common v0.48.0 h1:QO8U2CdOzSn1BBsmXJXduaaW+dY/5QLjfB8svtSzKKE=
-github.com/prometheus/common v0.48.0/go.mod h1:0/KsvlIEfPQCQ5I2iNSAWKPZziNCvRs5EC6ILDTlAPc=
+github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.53.0 h1:U2pL9w9nmJwJDa4qqLQ3ZaePJ6ZTwt7cMD3AG3+aLCE=
+github.com/prometheus/common v0.53.0/go.mod h1:BrxBKv3FWBIGXw89Mg1AeBq7FSyRzXWI3l3e7W3RN5U=
 github.com/prometheus/exporter-toolkit v0.11.0 h1:yNTsuZ0aNCNFQ3aFTD2uhPOvr4iD7fdBvKPAEGkNf+g=
 github.com/prometheus/exporter-toolkit v0.11.0/go.mod h1:BVnENhnNecpwoTLiABx7mrPB/OLRIgN74qlQbV+FK1Q=
-github.com/prometheus/procfs v0.13.0 h1:GqzLlQyfsPbaEHaQkO7tbDlriv/4o5Hudv6OXHGKX7o=
-github.com/prometheus/procfs v0.13.0/go.mod h1:cd4PFCR54QLnGKPaKGA6l+cfuNXtht43ZKY6tow0Y1g=
+github.com/prometheus/procfs v0.14.0 h1:Lw4VdGGoKEZilJsayHf0B+9YgLGREba2C6xr+Fdfq6s=
+github.com/prometheus/procfs v0.14.0/go.mod h1:XL+Iwz8k8ZabyZfMFHPiilCniixqQarAy5Mu67pHlNQ=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
 github.com/safchain/ethtool v0.3.0 h1:gimQJpsI6sc1yIqP/y8GYgiXn/NjgvpM0RNoWLVVmP0=
 github.com/safchain/ethtool v0.3.0/go.mod h1:SA9BwrgyAqNo7M+uaL6IYbxpm5wk3L7Mm6ocLW+CJUs=
 github.com/siebenmann/go-kstat v0.0.0-20210513183136-173c9b0a9973 h1:GfSdC6wKfTGcgCS7BtzF5694Amne1pGCSTY252WhlEY=
@@ -90,6 +94,7 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
 github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
 go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
@@ -99,20 +104,20 @@ go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9i
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
 golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
-golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1 h1:k/i9J1pBpvlfR+9QsetwPyERsqu1GIbi967PQMq3Ivc=
-golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
+golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f h1:99ci1mjWVBWwJiEKYY6jWa4d2nTQVIEhZIptnrVb1XY=
+golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f/go.mod h1:/lliqkxwWAhPjf5oSOIJup2XcqJaw8RGS6k3TGEc7GI=
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
 golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
-golang.org/x/oauth2 v0.16.0 h1:aDkGMBSYxElaoP81NpoUoz2oo2R2wHdZpGToUxfyQrQ=
-golang.org/x/oauth2 v0.16.0/go.mod h1:hqZ+0LWXsiVoZpeld6jVt06P3adbS2Uu911W1SsJv2o=
-golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
-golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/oauth2 v0.18.0 h1:09qnuIAgzdx1XplqJvW6CQqMCtGZykZWcXzPMPUusvI=
+golang.org/x/oauth2 v0.18.0/go.mod h1:Wf7knwG0MPoWIMMBgFlEaSUDaKskp0dCfrlJRJXbBi8=
+golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20211031064116-611d5d643895/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
-golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
@@ -127,10 +132,12 @@ google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGm
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0/go.mod h1:WDnlLJ4WF5VGsH/HVa3CI79GS0ol3YnhVnKP89i0kNg=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 howett.net/plist v1.0.1 h1:37GdZ8tP09Q35o9ych3ehygcsL+HqKSwzctveSlarvM=
 howett.net/plist v1.0.1/go.mod h1:lqaXoTrLY4hg8tnEzNru53gicrbv7rrk+2xJA/7hw9g=

node_exporter.go

@@ -31,6 +31,7 @@ import (
 	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 	promcollectors "github.com/prometheus/client_golang/prometheus/collectors"
+	versioncollector "github.com/prometheus/client_golang/prometheus/collectors/version"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/prometheus/common/version"
 	"github.com/prometheus/exporter-toolkit/web"
@@ -119,7 +120,7 @@ func (h *handler) innerHandler(filters ...string) (http.Handler, error) {
 	}
 
 	r := prometheus.NewRegistry()
-	r.MustRegister(version.NewCollector("node_exporter"))
+	r.MustRegister(versioncollector.NewCollector("node_exporter"))
 	if err := r.Register(nc); err != nil {
 		return nil, fmt.Errorf("couldn't register node collector: %s", err)
 	}