Add k8s 1.26 and onwards support to wavefront adapter

.gitignore

@@ -5,3 +5,8 @@ notes.txt
 apiserver.*
 docker-push.sh
 cmd/wavefront-query
+.DS_Store
+.zshrc
+cmd/.DS_Store
+deploy/.DS_Store
+go/

Dockerfile

@@ -3,4 +3,4 @@ ARG BUILDPLATFORM
 
 WORKDIR /
 COPY $BUILDPLATFORM .
-ENTRYPOINT ["/wavefront-adapter", "--logtostderr=true"]
+ENTRYPOINT ["/wavefront-adapter"]

Makefile

@@ -8,7 +8,7 @@ DOCKER_IMAGE?=wavefront-hpa-adapter
 # deploy/manifests/05-custom-metrics-apiserver-deployment.yaml file
 #
 # IMPORTANT: This is also overwritten by the release pipeline build with parameters
-VERSION?=0.9.15
+VERSION?=0.9.16
 
 BINARY_NAME=wavefront-adapter
 GIT_COMMIT:=$(shell git rev-parse --short HEAD)
@@ -74,4 +74,4 @@ update-version:
 	git add release/VERSION
 	git add deploy/manifests/05-custom-metrics-apiserver-deployment.yaml
 	git commit -m "Bump version to $(NEW_VERSION)"
-	git push --set-upstream origin bump-version-$(NEW_VERSION)
+	git push --set-upstream origin bump-version-$(NEW_VERSION)

deploy/hpa-examples/hpa-cpu-usage.yaml

@@ -1,15 +1,17 @@
-apiVersion: autoscaling/v2beta2
+apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
   name: example-hpa-custom-metrics
 spec:
   minReplicas: 1
   maxReplicas: 5
   metrics:
-  - type: Pods
-    pods:
-      metricName: cpu.usage_rate
-      targetAverageValue: 1800m
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: 50
   scaleTargetRef:
     apiVersion: apps/v1
     kind: Deployment

deploy/hpa-examples/hpa-external-selector.yaml

@@ -1,18 +1,21 @@
-apiVersion: autoscaling/v2beta2
+apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
   name: example-hpa-custom-metrics
 spec:
   minReplicas: 1
   maxReplicas: 5
   metrics:
-  - type: External
-    external:
-      metricName: my-external-metric
-      metricSelector:
-        matchLabels:
-          k8s-app: wavefront-proxy
-      targetAverageValue: 1800m
+    - type: External
+      external:
+        metric:
+          name: azure.vm.cpu
+          selector:
+            matchLabels:
+              k8s-app: wavefront-proxy
+        target:
+          type: AverageValue
+          averageValue: "30"
   scaleTargetRef:
     apiVersion: apps/v1
     kind: Deployment

deploy/hpa-examples/hpa-external.yaml

@@ -1,4 +1,4 @@
-apiVersion: autoscaling/v2beta2
+apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
   name: example-hpa-custom-metrics
@@ -8,8 +8,14 @@ spec:
   metrics:
   - type: External
     external:
-      metricName: azure.vm.cpu
-      targetAverageValue: 1800m
+      metric:
+        name: azure.vm.cpu
+        selector:
+          matchLabels:
+            queue: "azure.vm.cpu"
+      target:
+        type: AverageValue
+        averageValue: "30"
   scaleTargetRef:
     apiVersion: apps/v1
     kind: Deployment

deploy/hpa-examples/hpa-node.yaml

@@ -1,4 +1,4 @@
-apiVersion: autoscaling/v2beta2
+apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
   name: example-hpa-custom-metrics
@@ -10,10 +10,14 @@ spec:
   minReplicas: 1
   maxReplicas: 5
   metrics:
-  - type: Object
-    object:
-      target:
-        kind: Node
-        name: gke-cluster-default-pool-f63db08a-xrdh
-      metricName: cpu.usage_rate
-      targetValue: 2000m
+    - type: Object
+      object:
+        metric:
+          name: cpu.usage_rate
+        describedObject:
+          apiVersion: networking.k8s.io/v1
+          kind: Node
+          name: gke-cluster-default-pool-f63db08a-xrdh
+        target:
+          type: Value
+          value: 2k

deploy/hpa-examples/hpa-pods.yaml

@@ -1,4 +1,4 @@
-apiVersion: autoscaling/v2beta2
+apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
   name: example-hpa-custom-metrics
@@ -8,8 +8,11 @@ spec:
   metrics:
   - type: Pods
     pods:
-      metricName: cpu.request
-      targetAverageValue: 1800m
+      metric:
+        name: cpu-request
+      target:
+        type: AverageValue
+        averageValue: 1k
   scaleTargetRef:
     apiVersion: apps/v1
     kind: Deployment

deploy/manifests/01-custom-metrics-resource-reader-cluster-role.yaml

@@ -13,7 +13,6 @@ rules:
   verbs:
   - get
   - list
-
 - apiGroups:
   - autoscaling
   resources:

deploy/manifests/05-custom-metrics-apiserver-deployment.yaml

@@ -31,7 +31,6 @@ spec:
         - --secure-port=6443
         - --metrics-relist-interval=15m
         - --external-metrics-config=/etc/adapter/config.yaml
-        - --logtostderr=true
         ports:
         - containerPort: 6443
         volumeMounts:

deploy/sample-config.yaml

@@ -1,4 +1,3 @@
 rules:
-
 - query: 'ts(azure.compute.vm.percentage.cpu)'
   name: azure.vm.cpu

docs/introduction.md

@@ -22,7 +22,7 @@ Metrics can be specified via annotations on HPAs or via a static configuration f
 The adapter can dynamically discover HPAs and source external metrics via annotations. The annotations should be of the form `wavefront.com.external.metric/<metric_name>: '<ts query>'`. For example:
 
 ```yaml
-apiVersion: autoscaling/v2beta2
+apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
   name: example-app

go.mod

@@ -4,14 +4,14 @@ go 1.18
 
 require (
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.7.0
+	github.com/stretchr/testify v1.8.1
 	gopkg.in/yaml.v2 v2.4.0
-	k8s.io/api v0.22.11
-	k8s.io/apimachinery v0.22.11
-	k8s.io/client-go v0.22.11
-	k8s.io/component-base v0.22.11
-	k8s.io/metrics v0.22.11
-	sigs.k8s.io/custom-metrics-apiserver v1.22.0
+	k8s.io/api v0.23.3
+	k8s.io/apimachinery v0.23.3
+	k8s.io/client-go v0.23.3
+	k8s.io/component-base v0.23.3
+	k8s.io/metrics v0.23.3
+	sigs.k8s.io/custom-metrics-apiserver v1.23.0
 )
 
 require (
@@ -26,15 +26,18 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful v2.16.0+incompatible // indirect
 	github.com/emicklei/go-restful-swagger12 v0.0.0-20201014110547-68ccff494617 // indirect
-	github.com/evanphx/json-patch v4.11.0+incompatible // indirect
+	github.com/emicklei/go-restful/v3 v3.8.0 // indirect
+	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
 	github.com/felixge/httpsnoop v1.0.1 // indirect
-	github.com/go-logr/logr v0.4.0 // indirect
-	github.com/go-openapi/jsonpointer v0.19.5 // indirect
-	github.com/go-openapi/jsonreference v0.19.5 // indirect
-	github.com/go-openapi/swag v0.19.14 // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-openapi/jsonpointer v0.19.6 // indirect
+	github.com/go-openapi/jsonreference v0.20.1 // indirect
+	github.com/go-openapi/swag v0.22.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/gofuzz v1.1.0 // indirect
 	github.com/google/uuid v1.3.0 // indirect
@@ -44,19 +47,19 @@ require (
 	github.com/imdario/mergo v0.3.5 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
-	github.com/json-iterator/go v1.1.11 // indirect
-	github.com/mailru/easyjson v0.7.6 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.11.1 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.26.0 // indirect
+	github.com/prometheus/common v0.28.0 // indirect
 	github.com/prometheus/procfs v0.6.0 // indirect
-	github.com/spf13/cobra v1.1.3 // indirect
+	github.com/spf13/cobra v1.2.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	go.etcd.io/etcd/api/v3 v3.5.0 // indirect
 	go.etcd.io/etcd/client/pkg/v3 v3.5.0 // indirect
@@ -74,13 +77,13 @@ require (
 	go.opentelemetry.io/proto/otlp v0.7.0 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
-	go.uber.org/zap v1.17.0 // indirect
-	golang.org/x/crypto v0.17.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
+	go.uber.org/zap v1.19.0 // indirect
+	golang.org/x/crypto v0.19.0 // indirect
+	golang.org/x/net v0.21.0 // indirect
 	golang.org/x/oauth2 v0.7.0 // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
-	golang.org/x/sys v0.15.0 // indirect
-	golang.org/x/term v0.15.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/term v0.17.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
 	google.golang.org/appengine v1.6.7 // indirect
@@ -89,14 +92,15 @@ require (
 	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0 // indirect
-	k8s.io/apiserver v0.22.0 // indirect
-	k8s.io/klog/v2 v2.9.0 // indirect
-	k8s.io/kube-openapi v0.0.0-20211110012726-3cc51fd1e909 // indirect
-	k8s.io/utils v0.0.0-20211116205334-6203023598ed // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/apiserver v0.23.3 // indirect
+	k8s.io/klog/v2 v2.120.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20220124234850-424119656bbf // indirect
+	k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect
 	sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.30 // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 	sigs.k8s.io/yaml v1.2.0 // indirect
 )
 
-replace k8s.io/kube-openapi => k8s.io/kube-openapi v0.0.0-20211109043538-20434351676c
+replace k8s.io/kube-openapi => k8s.io/kube-openapi v0.0.0-20220124234850-424119656bbf