4e8d0b5836
* exclude creation and exporting of socket metrics via flag * make exclude metric naming more consistent * fix connect time metric update * add documentation * e2e test * improve creation of metric mapping
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"fmt"
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"math/rand" // #nosec
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"net/http"
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"os"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"k8s.io/klog/v2"
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"k8s.io/ingress-nginx/internal/ingress/controller"
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"k8s.io/ingress-nginx/internal/ingress/metric"
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"k8s.io/ingress-nginx/internal/nginx"
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ingressflags "k8s.io/ingress-nginx/pkg/flags"
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"k8s.io/ingress-nginx/pkg/metrics"
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"k8s.io/ingress-nginx/pkg/util/file"
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"k8s.io/ingress-nginx/pkg/util/process"
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"k8s.io/ingress-nginx/version"
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)
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func main() {
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klog.InitFlags(nil)
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rand.Seed(time.Now().UnixNano())
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fmt.Println(version.String())
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var err error
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showVersion, conf, err := ingressflags.ParseFlags()
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if showVersion {
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os.Exit(0)
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}
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if err != nil {
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klog.Fatal(err)
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}
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err = file.CreateRequiredDirectories()
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if err != nil {
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klog.Fatal(err)
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}
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reg := prometheus.NewRegistry()
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reg.MustRegister(collectors.NewGoCollector())
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reg.MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{
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PidFn: func() (int, error) { return os.Getpid(), nil },
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ReportErrors: true,
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}))
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mc := metric.NewDummyCollector()
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if conf.EnableMetrics {
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// TODO: Ingress class is not a part of dataplane anymore
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mc, err = metric.NewCollector(conf.MetricsPerHost, conf.ReportStatusClasses, reg, conf.IngressClassConfiguration.Controller, *conf.MetricsBuckets, conf.ExcludeSocketMetrics)
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if err != nil {
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klog.Fatalf("Error creating prometheus collector: %v", err)
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}
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}
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// Pass the ValidationWebhook status to determine if we need to start the collector
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// for the admissionWebhook
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// TODO: Dataplane does not contain validation webhook so the MetricCollector should not receive
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// this as an argument
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mc.Start(conf.ValidationWebhook)
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if conf.EnableProfiling {
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go metrics.RegisterProfiler(nginx.ProfilerAddress, nginx.ProfilerPort)
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}
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ngx := controller.NewNGINXController(conf, mc)
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mux := http.NewServeMux()
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metrics.RegisterHealthz(nginx.HealthPath, mux)
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metrics.RegisterMetrics(reg, mux)
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go metrics.StartHTTPServer(conf.HealthCheckHost, conf.ListenPorts.Health, mux)
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go ngx.Start()
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process.HandleSigterm(ngx, conf.PostShutdownGracePeriod, func(code int) {
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os.Exit(code)
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})
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}
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