chore: fix misspelling

CHANGELOG.md

@@ -29,7 +29,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Windows build now supported.
 - Added metrics to retrieve stats such as `procs_running` and `procs_blocked`.
 - Added metrics to retrieve network stats.
-- Added metric to retrieve guest OS features such as unknwon modules, ktd,
+- Added metric to retrieve guest OS features such as unknown modules, ktd,
   and kernel integrity.
 
 ### Changed
@@ -237,7 +237,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Added resource limites to NPD deployment.
 - Added log-counter to dockerfile.
 - Added `enable_message_change_based_condition_update` option to enable
-  condition update when messages cahnge for custom plugin.
+  condition update when messages change for custom plugin.
 
 ### Fixed
 

Makefile

@@ -103,7 +103,7 @@ ifeq ($(ENABLE_JOURNALD), 1)
 	CGO_ENABLED:=1
 	LOGCOUNTER=./bin/log-counter
 else
-	# Hack: Don't copy over log-counter, use a wildcard path that shouldnt match
+	# Hack: Don't copy over log-counter, use a wildcard path that shouldn't match
 	# anything in COPY command.
 	LOGCOUNTER=*dont-include-log-counter
 endif

config/plugin/check_ntp.sh

@@ -20,8 +20,7 @@ if systemctl -q is-active "$SERVICE"; then
   echo "$SERVICE is running"
   exit $OK
 else
-  # Does not differenciate stopped/failed service from non-existent
+  # Does not differentiate stopped/failed service from non-existent
   echo "$SERVICE is not running"
   exit $NONOK
 fi
-

docs/custom_plugin_monitor.md

@@ -1,9 +1,11 @@
 # Custom Plugin Monitor
 
 ## Configuration
+
 ### Plugin Config
+
 * `invoke_interval`: Interval at which custom plugins will be invoked.
-* `timeout`: Time after which custom plugins invokation will be terminated and considered timeout.
+* `timeout`: Time after which custom plugins invocation will be terminated and considered timeout.
 * `max_output_length`: The maximum standard output size from custom plugins that NPD will be cut and use for condition status message.
 * `concurrency`: The plugin worker number, i.e., how many custom plugins will be invoked concurrently.
 * `enable_message_change_based_condition_update`: Flag controls whether message change should result in a condition update.

docs/release_process.md

@@ -14,11 +14,11 @@ itself.
    viewing the changes on GitHub ([example:
    https://github.com/kubernetes/node-problem-detector/compare/v0.8.6...master](https://github.com/kubernetes/node-problem-detector/compare/v0.8.6...master)).
 
-1. Based on the changes to be included in the release, determine what the next
+2. Based on the changes to be included in the release, determine what the next
    release number should be. We strive to follow [SemVer](https://semver.org/)
    as much as possible.
 
-1. Update [CHANGELOG](https://github.com/kubernetes/node-problem-detector/blob/master/CHANGELOG.md)
+3. Update [CHANGELOG](https://github.com/kubernetes/node-problem-detector/blob/master/CHANGELOG.md)
    with all significant changes.
 
 ## Create release
@@ -31,11 +31,11 @@ body of the release:
    release (e.g.
    [https://github.com/kubernetes/node-problem-detector/compare/v0.8.5...v0.8.6](https://github.com/kubernetes/node-problem-detector/compare/v0.8.5...v0.8.6)).
 
-1. There is no need to duplicate everything from the CHANGELOG, but include the
+2. There is no need to duplicate everything from the CHANGELOG, but include the
    most significant things so someone just viewing the release entry will have
    an idea of what it includes.
 
-1. Provide a link to the new image release (e.g. `Image:
+3. Provide a link to the new image release (e.g. `Image:
    k8s.gcr.io/node-problem-detector/node-problem-detector:v0.8.6`)
 
 ## Post release steps

pkg/systemlogmonitor/logwatchers/filelog/log_watcher_test.go

@@ -170,7 +170,7 @@ Jan  2 03:04:05 kernel: [2.000000] 3
 			}
 		}
 		// The log channel should have already been drained
-		// There could stil be future messages sent into the channel, but the chance is really slim.
+		// There could still be future messages sent into the channel, but the chance is really slim.
 		timeout := time.After(100 * time.Millisecond)
 		select {
 		case log := <-logCh:

pkg/systemlogmonitor/logwatchers/journald/log_watcher_test.go

@@ -66,7 +66,7 @@ func TestTranslate(t *testing.T) {
 }
 
 func TestGoroutineLeak(t *testing.T) {
-	orignal := runtime.NumGoroutine()
+	original := runtime.NumGoroutine()
 	w := NewJournaldWatcher(types.WatcherConfig{
 		Plugin:       "journald",
 		PluginConfig: map[string]string{"source": "not-exist-service"},
@@ -75,5 +75,5 @@ func TestGoroutineLeak(t *testing.T) {
 	})
 	_, err := w.Watch()
 	assert.Error(t, err)
-	assert.Equal(t, orignal, runtime.NumGoroutine())
+	assert.Equal(t, original, runtime.NumGoroutine())
 }

pkg/systemstatsmonitor/disk_collector.go

@@ -274,7 +274,7 @@ func (dc *diskCollector) collect() {
 
 	// to make sure that the rows are not duplicated
 	// we display only the only one row even if there are
-	// mutiple rows for the same disk.
+	// multiple rows for the same disk.
 	seen := make(map[string]bool)
 	for _, partition := range partitions {
 		if seen[partition.Device] {

pkg/systemstatsmonitor/osfeature_collector.go

@@ -38,7 +38,7 @@ func NewOsFeatureCollectorOrDie(osFeatureConfig *ssmtypes.OSFeatureStatsConfig,
 		procPath: procPath,
 	}
 	var err error
-	// Use metrics.Last aggregation method to ensure the metric is a guage metric.
+	// Use metrics.Last aggregation method to ensure the metric is a gauge metric.
 	if osFeatureConfig.MetricsConfigs["system/os_feature"].DisplayName != "" {
 		oc.osFeature, err = metrics.NewInt64Metric(
 			metrics.OSFeatureID,

pkg/types/types.go

@@ -63,7 +63,7 @@ type Condition struct {
 	Transition time.Time `json:"transition"`
 	// Reason is a short reason of why node goes into this condition.
 	Reason string `json:"reason"`
-	// Message is a human readable message of why node goes into this condition.
+	// Message is a human-readable message of why node goes into this condition.
 	Message string `json:"message"`
 }
 
@@ -75,7 +75,7 @@ type Event struct {
 	Timestamp time.Time `json:"timestamp"`
 	// Reason is a short reason of why the event is generated.
 	Reason string `json:"reason"`
-	// Message is a human readable message of why the event is generated.
+	// Message is a human-readable message of why the event is generated.
 	Message string `json:"message"`
 }
 
@@ -113,7 +113,7 @@ type Monitor interface {
 
 // Exporter exports machine health data to certain control plane.
 type Exporter interface {
-	// Export problems to the control plane.
+	// ExportProblems Export problems to the control plane.
 	ExportProblems(*Status)
 }
 

pkg/util/helpers.go

@@ -5,7 +5,7 @@ Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
-    http://www.apache.org/licenses/LICENSE-2.0
+	http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
@@ -50,7 +50,7 @@ func GetStartTime(now time.Time, uptimeDuration time.Duration, lookbackStr strin
 		startTime = startTime.Add(delay)
 	}
 
-	// Addjust startTime according to lookback duration
+	// Adjust startTime according to lookback duration
 	lookbackStartTime := now
 	if lookbackStr != "" {
 		lookback, err := time.ParseDuration(lookbackStr)

pkg/util/metrics/helpers_test.go

@@ -5,7 +5,7 @@ Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
-    http://www.apache.org/licenses/LICENSE-2.0
+	http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
@@ -53,7 +53,7 @@ func TestPrometheusMetricsParsingAndMatching(t *testing.T) {
 				},
 			},
 			notExpectedMetrics: []Float64MetricRepresentation{
-				// Metric with non-existant label.
+				// Metric with non-existent label.
 				{
 					Name:   "host_uptime",
 					Labels: map[string]string{"non-existant-version": "0.0.1"},
@@ -63,7 +63,7 @@ func TestPrometheusMetricsParsingAndMatching(t *testing.T) {
 					Name:   "host_uptime",
 					Labels: map[string]string{"kernel_version": "mismatched-version"},
 				},
-				// Non-existant metric.
+				// Non-existent metric.
 				{
 					Name:   "host_downtime",
 					Labels: map[string]string{},
@@ -99,17 +99,17 @@ func TestPrometheusMetricsParsingAndMatching(t *testing.T) {
 					Name:   "host_uptime",
 					Labels: map[string]string{},
 				},
-				// Metric with non-existant label.
+				// Metric with non-existent label.
 				{
 					Name:   "host_uptime",
-					Labels: map[string]string{"non-existant-version": "0.0.1"},
+					Labels: map[string]string{"non-existent-version": "0.0.1"},
 				},
 				// Metric with incorrect label.
 				{
 					Name:   "host_uptime",
 					Labels: map[string]string{"kernel_version": "mismatched-version"},
 				},
-				// Non-existant metric.
+				// Non-existent metric.
 				{
 					Name:   "host_downtime",
 					Labels: map[string]string{},

pkg/util/metrics/system/cmdline_args.go

@@ -56,7 +56,7 @@ func CmdlineArgs(cmdlineFilePath string) ([]CmdlineArg, error) {
 		return nil, fmt.Errorf("error reading the file %s, %v", cmdlineFilePath, err)
 	}
 	if len(lines) < 1 {
-		return nil, fmt.Errorf("no lines are retured")
+		return nil, fmt.Errorf("no lines are returned")
 	}
 	cmdlineArgs := strings.FieldsFunc(lines[0], splitAfterSpace)
 	var result = make([]CmdlineArg, 0, len(cmdlineArgs))

test/e2e/problemmaker/makers/filesystem.go

@@ -32,6 +32,6 @@ func makeFilesystemError() {
 	msg := []byte("fake filesystem error from problem-maker")
 	err := ioutil.WriteFile(ext4ErrorTrigger, msg, 0200)
 	if err != nil {
-		glog.Fatalf("Failed writting log to %q: %v", ext4ErrorTrigger, err)
+		glog.Fatalf("Failed writing log to %q: %v", ext4ErrorTrigger, err)
 	}
 }

test/e2e/problemmaker/makers/kernel.go

@@ -40,7 +40,7 @@ func writeKernelMessageOrDie(msg string) {
 	for _, line := range strings.Split(msg, "\n") {
 		err := ioutil.WriteFile(kmsgPath, []byte(line), 0644)
 		if err != nil {
-			glog.Fatalf("Failed writting to %q: %v", kmsgPath, err)
+			glog.Fatalf("Failed writing to %q: %v", kmsgPath, err)
 		}
 	}
 }

test/kernel_log_generator/generator.sh

@@ -17,7 +17,7 @@
 # This script generate kernel log in given rate.
 # Note that this only works for journald.
 # Note that this script can't be used to test multi-line patterns, because
-# the test kernel log lines may be splitted by real kernel log.
+# the test kernel log lines may be split by real kernel log.
 
 # PROBLEM is the path to the problem log.
 PROBLEM=${PROBLEM:-""}