J'essaie de tester le HPA (autoscaling de pod horizontal) dans mon cluster Kubernetes. Heapster est opérationnel et je pense que cela fonctionne bien car je suis en mesure de voir les mesures dans Grafana. Aussi l'addon DNS fonctionne parfaitement.La mise à l'échelle automatique (HPA) n'a pas réussi à obtenir la consommation du processeur: impossible de convertir l'objet en valeur Go de type [] v1alpha1.PodMetrics
regardant à l'intérieur de la HPA, je peux voir l'erreur "Impossible d'obtenir la consommation et la demande CPU: pas unmarshall réponse heapster: JSON: ne peut pas objet unmarshal en valeur Go de Type [] v1alpha1.PodMetrics"
$ kubectl describe hpa php-apache
Name: php-apache
Namespace: default
Labels: <none>
Annotations: <none>
CreationTimestamp: Wed, 10 Aug 2016 13:01:47 +0200
Reference: Deployment/php-apache
Target CPU utilization: 50%
Current CPU utilization: <unset>
Min replicas: 1
Max replicas: 10
Events:
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
36s 6s 3 {horizontal-pod-autoscaler } Warning FailedGetMetrics failed to get CPU consumption and request: failed to unmarshall heapster response: json: cannot unmarshal object into Go value of type []v1alpha1.PodMetrics
36s 6s 3 {horizontal-pod-autoscaler } Warning FailedComputeReplicas failed to get CPU utilization: failed to get CPU consumption and request: failed to unmarshall heapster response: json: cannot unmarshal object into Go value of type []v1alpha1.PodMetrics
les journaux de Heapster dit:
$ kubectl logs --namespace=kube-system heapster-vf9h9 -c heapster
I0810 06:38:17.178683 1 heapster.go:66] /heapster --source=kubernetes:https://kubernetes.default --sink=influxdb:http://monitoring-influxdb:8086
I0810 06:38:17.178947 1 heapster.go:67] Heapster version 1.2.0-beta.0
I0810 06:38:17.179091 1 configs.go:60] Using Kubernetes client with master "https://kubernetes.default" and version v1
I0810 06:38:17.179100 1 configs.go:61] Using kubelet port 10255
E0810 06:40:24.467817 1 influxdb.go:217] issues while creating an InfluxDB sink: failed to ping InfluxDB server at "monitoring-influxdb:8086" - Get http://monitoring-influxdb:8086/ping: dial tcp 192.168.112.71:8086: getsockopt: connection timed out, will retry on use
I0810 06:40:24.467853 1 influxdb.go:231] created influxdb sink with options: host:monitoring-influxdb:8086 user:root db:k8s
I0810 06:40:24.467883 1 heapster.go:96] Starting with InfluxDB Sink
I0810 06:40:24.467892 1 heapster.go:96] Starting with Metric Sink
I0810 06:40:24.481233 1 heapster.go:175] Starting heapster on port 8082
I0810 06:41:05.129926 1 influxdb.go:209] Created database "k8s" on influxDB server at "monitoring-influxdb:8086"
I0810 11:02:45.357708 1 handlers.go:190] No metrics for pod default/php-apache-1272773798-rm4i0
I0810 11:02:45.426775 1 handlers.go:190] No metrics for pod default/php-apache-1272773798-rm4i0
Mon groupe a 2 noeuds et le nœud maître est également un nœud. Plus d'info:
$ kubectl cluster-info
Kubernetes master is running at http://10.1.1.46:8080
Heapster is running at http://10.1.1.46:8080/api/v1/proxy/namespaces/kube-system/services/heapster
KubeDNS is running at http://10.1.1.46:8080/api/v1/proxy/namespaces/kube-system/services/kube-dns
kubernetes-dashboard is running at http://10.1.1.46:8080/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard
monitoring-grafana is running at http://10.1.1.46:8080/api/v1/proxy/namespaces/kube-system/services/monitoring-grafana
$ kubectl version
Client Version: version.Info{Major:"1", Minor:"3", GitVersion:"v1.3.0", GitCommit:"283137936a498aed572ee22af6774b6fb6e9fd94", GitTreeState:"clean", BuildDate:"2016-07-01T19:26:38Z", GoVersion:"go1.6.2", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"3", GitVersion:"v1.3.4", GitCommit:"dd6b458ef8dbf24aff55795baa68f83383c9b3a9", GitTreeState:"clean", BuildDate:"2016-08-01T16:38:31Z", GoVersion:"go1.6.2", Compiler:"gc", Platform:"linux/amd64"}
est-il un problème entre la version Heapster et la version Kubernetes? J'ai fait le clone git de Heapster aujourd'hui, donc c'est la version la plus récente.
Merci beaucoup. Ça marche! –