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Add sync_proxy_rules_no_local_endpoints_total metric

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This commit is contained in:
Max Renaud
2022-03-29 21:09:45 +00:00
parent e89b80bdd8
commit f0dfac5d07
5 changed files with 354 additions and 11 deletions
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37
pkg/proxy/iptables/proxier.go
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@@ -38,9 +38,11 @@ import (
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/client-go/tools/events"
utilsysctl "k8s.io/component-helpers/node/util/sysctl"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/proxy"
"k8s.io/kubernetes/pkg/proxy/healthcheck"
"k8s.io/kubernetes/pkg/proxy/metaproxier"
@@ -993,6 +995,11 @@ func (proxier *Proxier) syncProxyRules() {
}
}
// These two variables are used to publish the sync_proxy_rules_no_endpoints_total
// metric.
serviceNoLocalEndpointsTotalInternal := 0
serviceNoLocalEndpointsTotalExternal := 0
// Build rules for each service-port.
for svcName, svc := range proxier.serviceMap {
svcInfo, ok := svc.(*serviceInfo)
@@ -1347,16 +1354,24 @@ func (proxier *Proxier) syncProxyRules() {
if len(localEndpoints) != 0 {
// Write rules jumping from localPolicyChain to localEndpointChains
proxier.writeServiceToEndpointRules(svcNameString, svcInfo, localPolicyChain, localEndpoints, args)
} else if hasEndpoints {
// Blackhole all traffic since there are no local endpoints
args = append(args[:0],
"-A", string(localPolicyChain),
"-m", "comment", "--comment",
fmt.Sprintf(`"%s has no local endpoints"`, svcNameString),
"-j",
string(KubeMarkDropChain),
)
proxier.natRules.Write(args)
} else {
if svcInfo.InternalPolicyLocal() && utilfeature.DefaultFeatureGate.Enabled(features.ServiceInternalTrafficPolicy) {
serviceNoLocalEndpointsTotalInternal++
}
if svcInfo.ExternalPolicyLocal() {
serviceNoLocalEndpointsTotalExternal++
}
if hasEndpoints {
// Blackhole all traffic since there are no local endpoints
args = append(args[:0],
"-A", string(localPolicyChain),
"-m", "comment", "--comment",
fmt.Sprintf(`"%s has no local endpoints"`, svcNameString),
"-j",
string(KubeMarkDropChain),
)
proxier.natRules.Write(args)
}
}
}
}
@@ -1478,6 +1493,8 @@ func (proxier *Proxier) syncProxyRules() {
}
}
metrics.SyncProxyRulesNoLocalEndpointsTotal.WithLabelValues("internal").Set(float64(serviceNoLocalEndpointsTotalInternal))
metrics.SyncProxyRulesNoLocalEndpointsTotal.WithLabelValues("external").Set(float64(serviceNoLocalEndpointsTotalExternal))
if proxier.healthzServer != nil {
proxier.healthzServer.Updated()
}