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feat(exporters): replace opencensus with opentelemetry #1141

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c82b1cf
feat(exporters): replace opencensus with opentelemetry
daveoy Sep 26, 2025
676f066
chore(test): go mod tidy
daveoy Sep 26, 2025
0a39f67
fix(test): allow for summary and histogram types to be emit
daveoy Sep 26, 2025
fe5724b
fix(otel): remove otel_scope labels
daveoy Sep 26, 2025
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22 changes: 14 additions & 8 deletions cmd/nodeproblemdetector/node_problem_detector.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,9 @@ import (
"k8s.io/node-problem-detector/pkg/exporters/prometheusexporter"
"k8s.io/node-problem-detector/pkg/problemdaemon"
"k8s.io/node-problem-detector/pkg/problemdetector"
"k8s.io/node-problem-detector/pkg/problemmetrics"
"k8s.io/node-problem-detector/pkg/types"
otelutil "k8s.io/node-problem-detector/pkg/util/otel"
"k8s.io/node-problem-detector/pkg/version"
)

Expand All @@ -43,13 +45,7 @@ func npdMain(ctx context.Context, npdo *options.NodeProblemDetectorOptions) erro
npdo.SetConfigFromDeprecatedOptionsOrDie()
npdo.ValidOrDie()

// Initialize problem daemons.
problemDaemons := problemdaemon.NewProblemDaemons(npdo.MonitorConfigPaths)
if len(problemDaemons) == 0 {
klog.Fatalf("No problem daemon is configured")
}

// Initialize exporters.
// Initialize exporters first to set up the OpenTelemetry readers.
defaultExporters := []types.Exporter{}
if ke := k8sexporter.NewExporterOrDie(ctx, npdo); ke != nil {
defaultExporters = append(defaultExporters, ke)
Expand All @@ -59,9 +55,19 @@ func npdMain(ctx context.Context, npdo *options.NodeProblemDetectorOptions) erro
defaultExporters = append(defaultExporters, pe)
klog.Info("Prometheus exporter started.")
}

plugableExporters := exporters.NewExporters()

// Initialize OpenTelemetry meter provider with all registered readers
// This must be called after all exporters have been created and registered their readers
otelutil.InitializeMeterProvider()
problemmetrics.InitializeGlobalProblemMetricsManager()

// Initialize problem daemons.
problemDaemons := problemdaemon.NewProblemDaemons(npdo.MonitorConfigPaths)
if len(problemDaemons) == 0 {
klog.Fatalf("No problem daemon is configured")
}

npdExporters := []types.Exporter{}
npdExporters = append(npdExporters, defaultExporters...)
npdExporters = append(npdExporters, plugableExporters...)
Expand Down
34 changes: 12 additions & 22 deletions go.mod
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Expand Up @@ -4,22 +4,25 @@ go 1.24.6

require (
cloud.google.com/go/compute/metadata v0.8.0
contrib.go.opencensus.io/exporter/prometheus v0.4.2
contrib.go.opencensus.io/exporter/stackdriver v0.13.14
github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.53.0
github.com/acobaugh/osrelease v0.1.0
github.com/avast/retry-go/v4 v4.6.1
github.com/coreos/go-systemd/v22 v22.5.0
github.com/euank/go-kmsg-parser v2.0.0+incompatible
github.com/hpcloud/tail v1.0.0
github.com/prometheus/client_golang v1.23.0
github.com/prometheus/client_model v0.6.2
github.com/prometheus/common v0.65.0
github.com/prometheus/procfs v0.17.0
github.com/shirou/gopsutil/v4 v4.25.8
github.com/spf13/pflag v1.0.10
github.com/stretchr/testify v1.11.1
go.opencensus.io v0.24.0
go.opentelemetry.io/otel v1.37.0
go.opentelemetry.io/otel/exporters/prometheus v0.59.1
go.opentelemetry.io/otel/metric v1.37.0
go.opentelemetry.io/otel/sdk v1.37.0
go.opentelemetry.io/otel/sdk/metric v1.37.0
golang.org/x/sys v0.35.0
google.golang.org/api v0.246.0
k8s.io/api v0.34.1
k8s.io/apimachinery v0.34.1
k8s.io/client-go v0.34.1
Expand All @@ -31,37 +34,29 @@ require (
cloud.google.com/go/auth v0.16.3 // indirect
cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
cloud.google.com/go/monitoring v1.24.2 // indirect
cloud.google.com/go/trace v1.11.6 // indirect
github.com/aws/aws-sdk-go v1.44.72 // indirect
github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.53.0 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
github.com/ebitengine/purego v0.8.4 // indirect
github.com/emicklei/go-restful/v3 v3.12.2 // indirect
github.com/felixge/httpsnoop v1.0.4 // indirect
github.com/fsnotify/fsnotify v1.6.0 // indirect
github.com/fxamacker/cbor/v2 v2.9.0 // indirect
github.com/go-kit/log v0.2.1 // indirect
github.com/go-logfmt/logfmt v0.5.1 // indirect
github.com/go-logr/logr v1.4.3 // indirect
github.com/go-logr/stdr v1.2.2 // indirect
github.com/go-ole/go-ole v1.2.6 // indirect
github.com/go-openapi/jsonpointer v0.21.0 // indirect
github.com/go-openapi/jsonreference v0.20.2 // indirect
github.com/go-openapi/swag v0.23.0 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
github.com/golang/protobuf v1.5.4 // indirect
github.com/google/gnostic-models v0.7.0 // indirect
github.com/google/s2a-go v0.1.9 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect
github.com/googleapis/gax-go/v2 v2.15.0 // indirect
github.com/jmespath/go-jmespath v0.4.0 // indirect
github.com/grafana/regexp v0.0.0-20240518133315-a468a5bfb3bc // indirect
github.com/josharian/intern v1.0.0 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/compress v1.17.9 // indirect
github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
github.com/mailru/easyjson v0.7.7 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
Expand All @@ -70,19 +65,14 @@ require (
github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
github.com/prometheus/client_golang v1.20.4 // indirect
github.com/prometheus/prometheus v0.35.0 // indirect
github.com/prometheus/statsd_exporter v0.22.7 // indirect
github.com/prometheus/otlptranslator v0.0.0-20250717125610-8549f4ab4f8f // indirect
github.com/tklauser/go-sysconf v0.3.15 // indirect
github.com/tklauser/numcpus v0.10.0 // indirect
github.com/x448/float16 v0.8.4 // indirect
github.com/yusufpapurcu/wmi v1.2.4 // indirect
go.opentelemetry.io/auto/sdk v1.1.0 // indirect
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.61.0 // indirect
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.61.0 // indirect
go.opentelemetry.io/otel v1.36.0 // indirect
go.opentelemetry.io/otel/metric v1.36.0 // indirect
go.opentelemetry.io/otel/trace v1.36.0 // indirect
go.opentelemetry.io/otel/trace v1.37.0 // indirect
go.yaml.in/yaml/v2 v2.4.2 // indirect
go.yaml.in/yaml/v3 v3.0.4 // indirect
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I thought one of these will be eliminated after opencensus removed. Are there more dependencies on older one?

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maybe I was thinking about the gopkg.in/yaml

golang.org/x/crypto v0.40.0 // indirect
Expand All @@ -92,6 +82,7 @@ require (
golang.org/x/term v0.33.0 // indirect
golang.org/x/text v0.27.0 // indirect
golang.org/x/time v0.12.0 // indirect
google.golang.org/api v0.246.0 // indirect
google.golang.org/genproto v0.0.0-20250603155806-513f23925822 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20250603155806-513f23925822 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20250728155136-f173205681a0 // indirect
Expand All @@ -101,7 +92,6 @@ require (
gopkg.in/fsnotify.v1 v1.4.7 // indirect
gopkg.in/inf.v0 v0.9.1 // indirect
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
k8s.io/kube-openapi v0.0.0-20250710124328-f3f2b991d03b // indirect
sigs.k8s.io/json v0.0.0-20241014173422-cfa47c3a1cc8 // indirect
Expand Down
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