/
monitoring.go
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/
monitoring.go
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// Copyright 2023 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 machinecontrollermanager
import (
"bytes"
"strings"
"text/template"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
)
const (
monitoringPrometheusJobName = "machine-controller-manager"
monitoringMetricMCMCloudAPIRequestsFailedTotal = "mcm_cloud_api_requests_failed_total"
monitoringMetricMCMCloudAPIRequestsTotal = "mcm_cloud_api_requests_total"
monitoringMetricMCMMachineControllerFrozen = "mcm_machine_controller_frozen"
monitoringMetricMCMMachineCurrentStatusPhase = "mcm_machine_current_status_phase"
monitoringMetricMCMMachineDeploymentFailedMachines = "mcm_machine_deployment_failed_machines"
monitoringMetricMCMMachineItemsTotal = "mcm_machine_items_total"
monitoringMetricMCMMachineSetFailedMachines = "mcm_machine_set_failed_machines"
monitoringMetricMCMMachineDeploymentItemsTotal = "mcm_machine_deployment_items_total"
monitoringMetricMCMMachineSetItemsTotal = "mcm_machine_set_items_total"
monitoringMetricMCMMachineSetStaleMachinesTotal = "mcm_machine_set_stale_machines_total"
monitoringMetricMCMScrapeFailureTotal = "mcm_scrape_failure_total"
monitoringMetricMCMWorkqueueAddsTotal = "mcm_workqueue_adds_total"
monitoringMetricMCMWorkqueueDepth = "mcm_workqueue_depth"
monitoringMetricMCMWorkqueueQueueDurationSecondsBucket = "mcm_workqueue_queue_duration_seconds_bucket"
monitoringMetricMCMWorkqueueQueueDurationSecondsSum = "mcm_workqueue_queue_duration_seconds_sum"
monitoringMetricMCMWorkqueueQueueDurationSecondsCount = "mcm_workqueue_queue_duration_seconds_count"
monitoringMetricMCMWorkqueueWorkDurationSecondsBucket = "mcm_workqueue_work_duration_seconds_bucket"
monitoringMetricMCMWorkqueueWorkDurationSecondsSum = "mcm_workqueue_work_duration_seconds_sum"
monitoringMetricMCMWorkqueueWorkDurationSecondsCount = "mcm_workqueue_work_duration_seconds_count"
monitoringMetricMCMWorkqueueUnfinishedWorkSeconds = "mcm_workqueue_unfinished_work_seconds"
monitoringMetricMCMWorkqueueLongestRunningProcessorSeconds = "mcm_workqueue_longest_running_processor_seconds"
monitoringMetricMCMWorkqueueRetriesTotal = "mcm_workqueue_retries_total"
monitoringMetricProcessMaxFds = "process_max_fds"
monitoringMetricProcessOpenFds = "process_open_fds"
monitoringAlertingRules = `groups:
- name: machine-controller-manager.rules
rules:
- alert: MachineControllerManagerDown
expr: absent(up{job="` + monitoringPrometheusJobName + `"} == 1)
for: 15m
labels:
service: ` + v1beta1constants.DeploymentNameMachineControllerManager + `
severity: critical
type: seed
visibility: operator
annotations:
description: There are no running machine controller manager instances. No shoot nodes can be created/maintained.
summary: Machine controller manager is down.
`
)
var (
monitoringAllowedMetrics = []string{
monitoringMetricMCMCloudAPIRequestsFailedTotal,
monitoringMetricMCMCloudAPIRequestsTotal,
monitoringMetricMCMMachineControllerFrozen,
monitoringMetricMCMMachineCurrentStatusPhase,
monitoringMetricMCMMachineDeploymentFailedMachines,
monitoringMetricMCMMachineItemsTotal,
monitoringMetricMCMMachineSetFailedMachines,
monitoringMetricMCMMachineDeploymentItemsTotal,
monitoringMetricMCMMachineSetItemsTotal,
monitoringMetricMCMMachineSetStaleMachinesTotal,
monitoringMetricMCMScrapeFailureTotal,
monitoringMetricMCMWorkqueueAddsTotal,
monitoringMetricMCMWorkqueueDepth,
monitoringMetricMCMWorkqueueQueueDurationSecondsBucket,
monitoringMetricMCMWorkqueueQueueDurationSecondsSum,
monitoringMetricMCMWorkqueueQueueDurationSecondsCount,
monitoringMetricMCMWorkqueueWorkDurationSecondsBucket,
monitoringMetricMCMWorkqueueWorkDurationSecondsSum,
monitoringMetricMCMWorkqueueWorkDurationSecondsCount,
monitoringMetricMCMWorkqueueUnfinishedWorkSeconds,
monitoringMetricMCMWorkqueueLongestRunningProcessorSeconds,
monitoringMetricMCMWorkqueueRetriesTotal,
monitoringMetricProcessMaxFds,
monitoringMetricProcessOpenFds,
}
monitoringScrapeConfigTmpl = `job_name: ` + monitoringPrometheusJobName + `
honor_labels: false
kubernetes_sd_configs:
- role: endpoints
namespaces:
names: [{{ .namespace }}]
relabel_configs:
- source_labels:
- __meta_kubernetes_service_name
- __meta_kubernetes_endpoint_port_name
action: keep
regex: ` + serviceName + `;` + portNameMetrics + `
- action: labelmap
regex: __meta_kubernetes_service_label_(.+)
- source_labels: [ __meta_kubernetes_pod_name ]
target_label: pod
metric_relabel_configs:
- source_labels: [ __name__ ]
action: keep
regex: ^(` + strings.Join(monitoringAllowedMetrics, "|") + `)$
`
monitoringScrapeConfigTemplate *template.Template
)
func init() {
var err error
monitoringScrapeConfigTemplate, err = template.New("monitoring-scrape-config").Parse(monitoringScrapeConfigTmpl)
utilruntime.Must(err)
}
// ScrapeConfigs returns the scrape configurations for Prometheus.
func (m *machineControllerManager) ScrapeConfigs() ([]string, error) {
var scrapeConfig bytes.Buffer
if err := monitoringScrapeConfigTemplate.Execute(&scrapeConfig, map[string]interface{}{"namespace": m.namespace}); err != nil {
return nil, err
}
return []string{scrapeConfig.String()}, nil
}
// AlertingRules returns the alerting rules for AlertManager.
func (m *machineControllerManager) AlertingRules() (map[string]string, error) {
return map[string]string{"machine-controller-manager.rules.yaml": monitoringAlertingRules}, nil
}