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pod_checker.go
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pod_checker.go
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package watcher
import (
"fmt"
"github.com/robfig/cron/v3"
"github.com/rs/zerolog/log"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/metrics/pkg/apis/metrics/v1beta1"
"github.com/iLert/ilert-kube-agent/pkg/config"
)
var podCheckerCron *cron.Cron
func startPodChecker(cfg *config.Config) {
podCheckerCron = cron.New()
podCheckerCron.AddFunc(fmt.Sprintf("@every %s", cfg.Settings.CheckInterval), func() {
checkPods(cfg)
})
log.Info().Msg("Starting pods checker")
podCheckerCron.Start()
}
func stopPodMetricsChecker() {
if podCheckerCron != nil {
log.Info().Msg("Stopping pods checker")
podCheckerCron.Stop()
}
}
func checkPods(cfg *config.Config) {
pods, err := cfg.KubeClient.CoreV1().Pods(metav1.NamespaceAll).List(metav1.ListOptions{})
if err != nil {
log.Fatal().Err(err).Msg("Failed to get nodes from apiserver")
}
if cfg.Alarms.Pods.Resources.Enabled {
log.Debug().Msg("Running pods resource check")
for _, pod := range pods.Items {
analyzePodResources(&pod, cfg)
}
}
}
func getContainerByName(name string, containers []v1beta1.ContainerMetrics) *v1beta1.ContainerMetrics {
var container v1beta1.ContainerMetrics
for _, c := range containers {
if c.Name == name {
container = c
break
}
}
return &container
}