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Implement metrics agreed on the KEP

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This commit is contained in:
Alexander Constantinescu 2023-02-15 16:23:49 +01:00
parent d7060f02ce
commit 6c5ab4263e
2 changed files with 18 additions and 2 deletions
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2
staging/src/k8s.io/cloud-provider/controllers/service/controller.go
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@ -720,6 +720,7 @@ func (c *Controller) nodeSyncService(svc *v1.Service, oldNodes, newNodes []*v1.N
klog.V(4).Infof("nodeSyncService started for service %s/%s", svc.Namespace, svc.Name) klog.V(4).Infof("nodeSyncService started for service %s/%s", svc.Namespace, svc.Name)
if err := c.lockedUpdateLoadBalancerHosts(svc, newNodes); err != nil { if err := c.lockedUpdateLoadBalancerHosts(svc, newNodes); err != nil {
runtime.HandleError(fmt.Errorf("failed to update load balancer hosts for service %s/%s: %v", svc.Namespace, svc.Name, err)) runtime.HandleError(fmt.Errorf("failed to update load balancer hosts for service %s/%s: %v", svc.Namespace, svc.Name, err))
nodeSyncErrorCount.Inc()
return retNeedRetry return retNeedRetry
} }
klog.V(4).Infof("nodeSyncService finished successfully for service %s/%s", svc.Namespace, svc.Name) klog.V(4).Infof("nodeSyncService finished successfully for service %s/%s", svc.Namespace, svc.Name)
@ -763,6 +764,7 @@ func (c *Controller) updateLoadBalancerHosts(ctx context.Context, services []*v1
// associated with the service. // associated with the service.
func (c *Controller) lockedUpdateLoadBalancerHosts(service *v1.Service, hosts []*v1.Node) error { func (c *Controller) lockedUpdateLoadBalancerHosts(service *v1.Service, hosts []*v1.Node) error {
startTime := time.Now() startTime := time.Now()
loadBalancerSyncCount.Inc()
defer func() { defer func() {
latency := time.Since(startTime).Seconds() latency := time.Since(startTime).Seconds()
klog.V(4).Infof("It took %v seconds to update load balancer hosts for service %s/%s", latency, service.Namespace, service.Name) klog.V(4).Infof("It took %v seconds to update load balancer hosts for service %s/%s", latency, service.Namespace, service.Name)

18
staging/src/k8s.io/cloud-provider/controllers/service/metrics.go
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@ -17,9 +17,10 @@ limitations under the License.
package service package service
import ( import (
"sync"
"k8s.io/component-base/metrics" "k8s.io/component-base/metrics"
"k8s.io/component-base/metrics/legacyregistry" "k8s.io/component-base/metrics/legacyregistry"
"sync"
) )
const ( const (
@ -32,12 +33,26 @@ var register sync.Once
// registerMetrics registers service-controller metrics. // registerMetrics registers service-controller metrics.
func registerMetrics() { func registerMetrics() {
register.Do(func() { register.Do(func() {
legacyregistry.MustRegister(loadBalancerSyncCount)
legacyregistry.MustRegister(nodeSyncLatency) legacyregistry.MustRegister(nodeSyncLatency)
legacyregistry.MustRegister(nodeSyncErrorCount)
legacyregistry.MustRegister(updateLoadBalancerHostLatency) legacyregistry.MustRegister(updateLoadBalancerHostLatency)
}) })
} }
var ( var (
loadBalancerSyncCount = metrics.NewCounter(&metrics.CounterOpts{
Name: "loadbalancer_sync_total",
Subsystem: subSystemName,
Help: "A metric counting the amount of times any load balancer has been configured, as an effect of service/node changes on the cluster",
StabilityLevel: metrics.ALPHA,
})
nodeSyncErrorCount = metrics.NewCounter(&metrics.CounterOpts{
Name: "nodesync_error_total",
Subsystem: subSystemName,
Help: "A metric counting the amount of times any load balancer has been configured and errored, as an effect of node changes on the cluster",
StabilityLevel: metrics.ALPHA,
})
nodeSyncLatency = metrics.NewHistogram(&metrics.HistogramOpts{ nodeSyncLatency = metrics.NewHistogram(&metrics.HistogramOpts{
Name: "nodesync_latency_seconds", Name: "nodesync_latency_seconds",
Subsystem: subSystemName, Subsystem: subSystemName,
@ -46,7 +61,6 @@ var (
Buckets: metrics.ExponentialBuckets(1, 2, 15), Buckets: metrics.ExponentialBuckets(1, 2, 15),
StabilityLevel: metrics.ALPHA, StabilityLevel: metrics.ALPHA,
}) })
updateLoadBalancerHostLatency = metrics.NewHistogram(&metrics.HistogramOpts{ updateLoadBalancerHostLatency = metrics.NewHistogram(&metrics.HistogramOpts{
Name: "update_loadbalancer_host_latency_seconds", Name: "update_loadbalancer_host_latency_seconds",
Subsystem: subSystemName, Subsystem: subSystemName,