Fix findings to make lint pass

Signed-off-by: Manuel Rüger <manuel@rueg.eu>

.golangci.yml

@@ -1,20 +1,21 @@
 run:
-  deadline: 2m
+  deadline: 5m
 
 linters:
   disable-all: true
   enable:
+    - gocritic
+    - gocyclo
     - gofmt
     - goimports
-    - golint
-    - staticcheck
-    - gocyclo
+    - gosimple
+    - govet
     - ineffassign
     - misspell
-    - gocritic
-    - govet
-    - unconvert
     - promlinter
+    - revive
+    - staticcheck
+    - unconvert
 
 linters-settings:
   goimports:

internal/store/persistentvolume.go

@@ -33,7 +33,7 @@ import (
 
 var (
 	descPersistentVolumeClaimRefName          = "kube_persistentvolume_claim_ref"
-	descPersistentVolumeClaimRefHelp          = "Information about the Persitant Volume Claim Reference."
+	descPersistentVolumeClaimRefHelp          = "Information about the Persistent Volume Claim Reference."
 	descPersistentVolumeClaimRefDefaultLabels = []string{"persistentvolume"}
 
 	descPersistentVolumeAnnotationsName     = "kube_persistentvolume_annotations"

internal/store/persistentvolume_test.go

@@ -441,7 +441,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 				},
 			},
 			Want: `
-					# HELP kube_persistentvolume_claim_ref Information about the Persitant Volume Claim Reference.
+					# HELP kube_persistentvolume_claim_ref Information about the Persistent Volume Claim Reference.
 					# TYPE kube_persistentvolume_claim_ref gauge
 					kube_persistentvolume_claim_ref{claim_namespace="default",name="pv-claim",persistentvolume="test-claimed-pv"} 1
 				`,
@@ -457,7 +457,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 				},
 			},
 			Want: `
-					# HELP kube_persistentvolume_claim_ref Information about the Persitant Volume Claim Reference.
+					# HELP kube_persistentvolume_claim_ref Information about the Persistent Volume Claim Reference.
 					# TYPE kube_persistentvolume_claim_ref gauge
 				`,
 			MetricNames: []string{"kube_persistentvolume_claim_ref"},

pkg/util/proc/reaper.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 /*

tests/e2e/main_test.go

@@ -121,7 +121,7 @@ func TestDocumentation(t *testing.T) {
 				for _, labelPattern := range acceptedLabelNames {
 					re, err := regexp.Compile(labelPattern)
 					if err != nil {
-						t.Errorf("Cannot compile pattern %s: %w", labelPattern, err)
+						t.Errorf("Cannot compile pattern %s: %v", labelPattern, err)
 						continue
 					}
 					if re.MatchString(labelName) {