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wait until /metrics are ready on e2e test #89048

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merged 1 commit into from Mar 12, 2020
Merged

wait until /metrics are ready on e2e test #89048

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1 change: 1 addition & 0 deletions test/e2e/framework/metrics/BUILD
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Expand Up @@ -28,6 +28,7 @@ go_library(
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/fields:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/wait:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes:go_default_library",
"//staging/src/k8s.io/component-base/metrics/testutil:go_default_library",
"//test/e2e/framework/log:go_default_library",
Expand Down
21 changes: 20 additions & 1 deletion test/e2e/framework/metrics/metrics_grabber.go
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Expand Up @@ -20,9 +20,11 @@ import (
"context"
"fmt"
"sync"
"time"

metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/util/wait"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/kubernetes/pkg/master/ports"
e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
Expand Down Expand Up @@ -164,10 +166,27 @@ func (g *Grabber) GrabFromControllerManager() (ControllerManagerMetrics, error)
return ControllerManagerMetrics{}, fmt.Errorf("Master's Kubelet is not registered. Skipping ControllerManager's metrics gathering")
}

var err error
podName := fmt.Sprintf("%v-%v", "kube-controller-manager", g.masterName)
g.waitForControllerManagerReadyOnce.Do(func() {
e2epod.WaitForPodNameRunningInNamespace(g.client, podName, metav1.NamespaceSystem)
if runningErr := e2epod.WaitForPodNameRunningInNamespace(g.client, podName, metav1.NamespaceSystem); runningErr != nil {
err = fmt.Errorf("error waiting for controller manager pod to be running: %w", err)
return
}

var lastMetricsFetchErr error
if metricsWaitErr := wait.PollImmediate(time.Second, time.Minute, func() (bool, error) {
_, lastMetricsFetchErr = g.getMetricsFromPod(g.client, podName, metav1.NamespaceSystem, ports.InsecureKubeControllerManagerPort)
return lastMetricsFetchErr == nil, nil
}); metricsWaitErr != nil {
err = fmt.Errorf("error waiting for controller manager pod to expose metrics: %v; %v", err, lastMetricsFetchErr)
return
}
})
if err != nil {
return ControllerManagerMetrics{}, err
}

output, err := g.getMetricsFromPod(g.client, podName, metav1.NamespaceSystem, ports.InsecureKubeControllerManagerPort)
if err != nil {
return ControllerManagerMetrics{}, err
Expand Down