30 lines
1.4 KiB
Go
30 lines
1.4 KiB
Go
package main
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import (
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"os"
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// Note that Kubernetes registers workqueue metrics to default prometheus Registry. And the registry will be
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// initialized by the package 'k8s.io/apiserver/pkg/server'.
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// See https://github.com/kubernetes/kubernetes/blob/f61ed439882e34d9dad28b602afdc852feb2337a/staging/src/k8s.io/component-base/metrics/prometheus/workqueue/metrics.go#L25
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// But the controller-runtime registers workqueue metrics to its own Registry instead of default prometheus Registry.
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// See https://github.com/kubernetes-sigs/controller-runtime/blob/4d10a0615b11507451ecb58bfd59f0f6ef313a29/pkg/metrics/workqueue.go#L24-L26
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// However, global workqueue metrics factory will be only initialized once.
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// See https://github.com/kubernetes/kubernetes/blob/f61ed439882e34d9dad28b602afdc852feb2337a/staging/src/k8s.io/client-go/util/workqueue/metrics.go#L257-L261
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// So this package should be initialized before 'k8s.io/apiserver/pkg/server', thus the internal registry of
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// controller-runtime could be set first.
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_ "sigs.k8s.io/controller-runtime/pkg/metrics"
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apiserver "k8s.io/apiserver/pkg/server"
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"k8s.io/component-base/cli"
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_ "k8s.io/component-base/logs/json/register" // for JSON log format registration
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"github.com/karmada-io/karmada/cmd/agent/app"
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)
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func main() {
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ctx := apiserver.SetupSignalContext()
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cmd := app.NewAgentCommand(ctx)
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code := cli.Run(cmd)
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os.Exit(code)
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}
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