Update build

* Update build to Go 1.18.
* Update minimum version to 1.17.
* Update machine image to latest.
* Enable dependabot.
* Simplify build in readme.

Signed-off-by: Ben Kochie <superq@gmail.com>

.circleci/config.yml

@@ -7,7 +7,7 @@ executors:
   # should also be updated.
   golang:
     docker:
-      - image: circleci/golang:1.17
+      - image: cimg/go:1.18
 jobs:
   test:
     executor: golang
@@ -54,9 +54,9 @@ jobs:
           destination: /build
   test_docker:
     machine:
-      image: ubuntu-2004:202101-01
+      image: ubuntu-2204:2022.04.2
     environment:
-      DOCKER_TEST_IMAGE_NAME: quay.io/prometheus/golang-builder:1.16-base
+      DOCKER_TEST_IMAGE_NAME: quay.io/prometheus/golang-builder:1.18-base
       REPO_PATH: github.com/prometheus/node_exporter
     steps:
       - prometheus/setup_environment

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.promu.yml

@@ -1,7 +1,7 @@
 go:
     # Whenever the Go version is updated here, .circle/config.yml and
     # .promu-cgo.yml should also be updated.
-    version: 1.17
+    version: 1.18
 repository:
     path: github.com/prometheus/node_exporter
 build:

README.md

@@ -266,7 +266,7 @@ Building:
 
     git clone https://github.com/prometheus/node_exporter.git
     cd node_exporter
-    make
+    make build
     ./node_exporter <flags>
 
 To see all available configuration flags:

go.mod

@@ -1,5 +1,7 @@
 module github.com/prometheus/node_exporter
 
+go 1.17
+
 require (
 	github.com/beevik/ntp v0.3.0
 	github.com/coreos/go-systemd/v22 v22.3.2
@@ -20,10 +22,35 @@ require (
 	github.com/prometheus/exporter-toolkit v0.7.1
 	github.com/prometheus/procfs v0.7.4-0.20211011103944-1a7a2bd3279f
 	github.com/safchain/ethtool v0.2.0
-	github.com/siebenmann/go-kstat v0.0.0-20210513183136-173c9b0a9973 // indirect
 	github.com/soundcloud/go-runit v0.0.0-20150630195641-06ad41a06c4a
 	golang.org/x/sys v0.0.0-20220330033206-e17cdc41300f
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 )
 
-go 1.14
+require (
+	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
+	github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/go-logfmt/logfmt v0.5.1 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/go-cmp v0.5.7 // indirect
+	github.com/josharian/native v1.0.0 // indirect
+	github.com/jpillora/backoff v1.0.0 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mdlayher/genetlink v1.2.0 // indirect
+	github.com/mdlayher/socket v0.2.2 // indirect
+	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/siebenmann/go-kstat v0.0.0-20210513183136-173c9b0a9973 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	golang.org/x/crypto v0.0.0-20220214200702-86341886e292 // indirect
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	golang.org/x/text v0.3.7 // indirect
+	google.golang.org/appengine v1.6.6 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)

go.sum

@@ -69,7 +69,6 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/frankban/quicktest v1.14.0 h1:+cqqvzZV87b4adx/5ayVOaYZ2CrvM4ejQvUdBzPPUss=
 github.com/frankban/quicktest v1.14.0/go.mod h1:NeW+ay9A/U67EYXNFA1nPE8e/tnQv/09mUdL/ijj8og=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=