/
prometheus.go
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/
prometheus.go
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// Copyright 2020 Antrea Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metrics
import (
"k8s.io/component-base/metrics"
"k8s.io/component-base/metrics/legacyregistry"
"k8s.io/klog/v2"
)
const (
metricNamespaceAntrea = "antrea"
metricSubsystemAgent = "agent"
)
var (
EgressNetworkPolicyRuleCount = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "egress_networkpolicy_rule_count",
Help: "Number of egress NetworkPolicy rules on local Node which are managed by the Antrea Agent.",
StabilityLevel: metrics.STABLE,
},
)
IngressNetworkPolicyRuleCount = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "ingress_networkpolicy_rule_count",
Help: "Number of ingress NetworkPolicy rules on local Node which are managed by the Antrea Agent.",
StabilityLevel: metrics.STABLE,
},
)
PodCount = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "local_pod_count",
Help: "Number of Pods on local Node which are managed by the Antrea Agent.",
StabilityLevel: metrics.STABLE,
},
)
NetworkPolicyCount = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "networkpolicy_count",
Help: "Number of NetworkPolicies on local Node which are managed by the Antrea Agent.",
StabilityLevel: metrics.STABLE,
},
)
OVSTotalFlowCount = metrics.NewGauge(&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "ovs_total_flow_count",
Help: "Total flow count of all OVS flow tables.",
StabilityLevel: metrics.STABLE,
},
)
OVSFlowCount = metrics.NewGaugeVec(&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "ovs_flow_count",
Help: "Flow count for each OVS flow table. The TableID is used as a label.",
StabilityLevel: metrics.STABLE,
}, []string{"table_id"})
OVSFlowOpsCount = metrics.NewCounterVec(
&metrics.CounterOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "ovs_flow_ops_count",
Help: "Number of OVS flow operations, partitioned by operation type (add, modify and delete).",
StabilityLevel: metrics.ALPHA,
},
[]string{"operation"},
)
OVSFlowOpsErrorCount = metrics.NewCounterVec(
&metrics.CounterOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "ovs_flow_ops_error_count",
Help: "Number of OVS flow operation errors, partitioned by operation type (add, modify and delete).",
StabilityLevel: metrics.ALPHA,
},
[]string{"operation"},
)
OVSFlowOpsLatency = metrics.NewHistogramVec(
&metrics.HistogramOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "ovs_flow_ops_latency_milliseconds",
Help: "The latency of OVS flow operations, partitioned by operation type (add, modify and delete).",
StabilityLevel: metrics.ALPHA,
},
[]string{"operation"},
)
TotalConnectionsInConnTrackTable = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "conntrack_total_connection_count",
Help: "Number of connections in the conntrack table. This metric gets updated at an interval specified by flowPollInterval, a configuration parameter for the Agent.",
StabilityLevel: metrics.ALPHA,
},
)
TotalAntreaConnectionsInConnTrackTable = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "conntrack_antrea_connection_count",
Help: "Number of connections in the Antrea ZoneID of the conntrack table. This metric gets updated at an interval specified by flowPollInterval, a configuration parameter for the Agent.",
StabilityLevel: metrics.ALPHA,
},
)
TotalDenyConnections = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "denied_connection_count",
Help: "Number of denied connections detected by Flow Exporter deny connections tracking. This metric gets updated when a flow is rejected/dropped by network policy.",
StabilityLevel: metrics.ALPHA,
},
)
ReconnectionsToFlowCollector = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "flow_collector_reconnection_count",
Help: "Number of re-connections between Flow Exporter and flow collector. This metric gets updated whenever the connection is re-established between the Flow Exporter and the flow collector (e.g. the Flow Aggregator).",
StabilityLevel: metrics.ALPHA,
},
)
MaxConnectionsInConnTrackTable = metrics.NewGauge(
&metrics.GaugeOpts{
Namespace: metricNamespaceAntrea,
Subsystem: metricSubsystemAgent,
Name: "conntrack_max_connection_count",
Help: "Size of the conntrack table. This metric gets updated at an interval specified by flowPollInterval, a configuration parameter for the Agent.",
StabilityLevel: metrics.ALPHA,
},
)
)
func InitializePrometheusMetrics() {
klog.Info("Initializing prometheus metrics")
InitializePodMetrics()
InitializeNetworkPolicyMetrics()
InitializeOVSMetrics()
InitializeConnectionMetrics()
}
func InitializePodMetrics() {
if err := legacyregistry.Register(PodCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_local_pod_count")
}
}
func InitializeNetworkPolicyMetrics() {
if err := legacyregistry.Register(EgressNetworkPolicyRuleCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_egress_networkpolicy_rule_count")
}
if err := legacyregistry.Register(IngressNetworkPolicyRuleCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_ingress_networkpolicy_rule_count")
}
if err := legacyregistry.Register(NetworkPolicyCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_networkpolicy_count")
}
}
func InitializeOVSMetrics() {
if err := legacyregistry.Register(OVSTotalFlowCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_ovs_total_flow_count")
}
if err := legacyregistry.Register(OVSFlowCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_ovs_flow_count")
}
if err := legacyregistry.Register(OVSFlowOpsCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_ovs_flow_ops_count")
}
if err := legacyregistry.Register(OVSFlowOpsErrorCount); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_ovs_flow_ops_error_count")
}
if err := legacyregistry.Register(OVSFlowOpsLatency); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_ovs_flow_ops_latency_milliseconds")
}
// Initialize OpenFlow operations metrics with label add, modify and delete
// since those metrics won't come out until observation.
opsArray := [3]string{"add", "modify", "delete"}
for _, ops := range opsArray {
OVSFlowOpsCount.WithLabelValues(ops)
OVSFlowOpsErrorCount.WithLabelValues(ops)
OVSFlowOpsLatency.WithLabelValues(ops)
}
}
func InitializeConnectionMetrics() {
if err := legacyregistry.Register(TotalConnectionsInConnTrackTable); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_conntrack_total_connection_count")
}
if err := legacyregistry.Register(TotalAntreaConnectionsInConnTrackTable); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_conntrack_antrea_connection_count")
}
if err := legacyregistry.Register(TotalDenyConnections); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_denied_connection_count")
}
if err := legacyregistry.Register(ReconnectionsToFlowCollector); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_flow_collector_reconnection_count")
}
if err := legacyregistry.Register(MaxConnectionsInConnTrackTable); err != nil {
klog.ErrorS(err, "Failed to register metrics with Prometheus", "metrics", "antrea_agent_conntrack_max_connection_count")
}
}