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Original file line number | Diff line number | Diff line change |
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FROM golang:alpine AS build | ||
WORKDIR /app | ||
COPY . . | ||
RUN go build -o main . | ||
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# Stage 2: Run | ||
FROM alpine | ||
WORKDIR /app | ||
COPY --from=build /app/main /app/ | ||
CMD ["/app/main"] |
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Original file line number | Diff line number | Diff line change |
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package main | ||
|
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import ( | ||
"context" | ||
"fmt" | ||
"net/http" | ||
"strings" | ||
"time" | ||
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"github.com/prometheus/client_golang/prometheus" | ||
"github.com/prometheus/client_golang/prometheus/promhttp" | ||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
"k8s.io/client-go/kubernetes" | ||
"k8s.io/client-go/rest" | ||
) | ||
|
||
var ( | ||
zombieNamespaceCount = prometheus.NewGauge(prometheus.GaugeOpts{ | ||
Name: "zombie_namespace_count", | ||
Help: "Number of namespaces with names starting with 'zombie-'", | ||
}) | ||
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zombiePodsCount = prometheus.NewGaugeVec(prometheus.GaugeOpts{ | ||
Name: "zombie_namespace_pods_count", | ||
Help: "Number of pods in namespaces with names starting with 'zombie-'", | ||
}, []string{"namespace"}) | ||
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zombieNamespaceOld = prometheus.NewGaugeVec(prometheus.GaugeOpts{ | ||
Name: "zombie_namespace_old", | ||
Help: "Indicates if a namespace with a name starting with 'zombie-' is older than 2 days", | ||
}, []string{"namespace"}) | ||
) | ||
|
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func init() { | ||
prometheus.MustRegister(zombieNamespaceCount) | ||
prometheus.MustRegister(zombiePodsCount) | ||
prometheus.MustRegister(zombieNamespaceOld) | ||
} | ||
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func main() { | ||
config, err := rest.InClusterConfig() | ||
if err != nil { | ||
panic(err) | ||
} | ||
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clientset, err := kubernetes.NewForConfig(config) | ||
if err != nil { | ||
panic(err) | ||
} | ||
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go func() { | ||
for { | ||
updateMetrics(clientset) | ||
time.Sleep(1 * time.Minute) | ||
} | ||
}() | ||
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http.Handle("/metrics", promhttp.Handler()) | ||
http.ListenAndServe(":9090", nil) | ||
} | ||
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func updateMetrics(clientset *kubernetes.Clientset) { | ||
namespaces, err := clientset.CoreV1().Namespaces().List(context.Background(), metav1.ListOptions{}) | ||
if err != nil { | ||
fmt.Printf("Error listing namespaces: %v\n", err) | ||
return | ||
} | ||
|
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zombieNamespaceCounter := 0 | ||
twoDaysAgo := time.Now().Add(-48 * time.Hour) | ||
for _, ns := range namespaces.Items { | ||
if strings.HasPrefix(ns.Name, "zombie-") { | ||
zombieNamespaceCounter++ | ||
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pods, err := clientset.CoreV1().Pods(ns.Name).List(context.Background(), metav1.ListOptions{}) | ||
if err != nil { | ||
fmt.Printf("Error listing pods in namespace %s: %v\n", ns.Name, err) | ||
continue | ||
} | ||
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zombiePodsCount.WithLabelValues(ns.Name).Set(float64(len(pods.Items))) | ||
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if ns.CreationTimestamp.Time.Before(twoDaysAgo) { | ||
zombieNamespaceOld.WithLabelValues(ns.Name).Set(1) | ||
} else { | ||
zombieNamespaceOld.WithLabelValues(ns.Name).Set(0) | ||
} | ||
} | ||
} | ||
|
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zombieNamespaceCount.Set(float64(zombieNamespaceCounter)) | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,56 @@ | ||
module zombienet_metrics | ||
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go 1.19 | ||
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require ( | ||
github.com/prometheus/client_golang v1.15.1 | ||
k8s.io/client-go v0.27.1 | ||
) | ||
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require ( | ||
github.com/beorn7/perks v1.0.1 // indirect | ||
github.com/cespare/xxhash/v2 v2.2.0 // indirect | ||
github.com/davecgh/go-spew v1.1.1 // indirect | ||
github.com/emicklei/go-restful/v3 v3.9.0 // indirect | ||
github.com/go-logr/logr v1.2.3 // indirect | ||
github.com/go-openapi/jsonpointer v0.19.6 // indirect | ||
github.com/go-openapi/jsonreference v0.20.1 // indirect | ||
github.com/go-openapi/swag v0.22.3 // indirect | ||
github.com/gogo/protobuf v1.3.2 // indirect | ||
github.com/golang/protobuf v1.5.3 // indirect | ||
github.com/google/gnostic v0.5.7-v3refs // indirect | ||
github.com/google/go-cmp v0.5.9 // indirect | ||
github.com/google/gofuzz v1.1.0 // indirect | ||
github.com/google/uuid v1.3.0 // indirect | ||
github.com/imdario/mergo v0.3.6 // indirect | ||
github.com/josharian/intern v1.0.0 // indirect | ||
github.com/json-iterator/go v1.1.12 // indirect | ||
github.com/mailru/easyjson v0.7.7 // indirect | ||
github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect | ||
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect | ||
github.com/modern-go/reflect2 v1.0.2 // indirect | ||
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect | ||
github.com/prometheus/client_model v0.3.0 // indirect | ||
github.com/prometheus/common v0.42.0 // indirect | ||
github.com/prometheus/procfs v0.9.0 // indirect | ||
github.com/spf13/pflag v1.0.5 // indirect | ||
golang.org/x/net v0.8.0 // indirect | ||
golang.org/x/oauth2 v0.5.0 // indirect | ||
golang.org/x/sys v0.6.0 // indirect | ||
golang.org/x/term v0.6.0 // indirect | ||
golang.org/x/text v0.8.0 // indirect | ||
golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect | ||
google.golang.org/appengine v1.6.7 // indirect | ||
google.golang.org/protobuf v1.30.0 // indirect | ||
gopkg.in/inf.v0 v0.9.1 // indirect | ||
gopkg.in/yaml.v2 v2.4.0 // indirect | ||
gopkg.in/yaml.v3 v3.0.1 // indirect | ||
k8s.io/api v0.27.1 // indirect | ||
k8s.io/apimachinery v0.27.1 // indirect | ||
k8s.io/klog/v2 v2.90.1 // indirect | ||
k8s.io/kube-openapi v0.0.0-20230308215209-15aac26d736a // indirect | ||
k8s.io/utils v0.0.0-20230209194617-a36077c30491 // indirect | ||
sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect | ||
sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect | ||
sigs.k8s.io/yaml v1.3.0 // indirect | ||
) |
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