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monitoring.go
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monitoring.go
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// Copyright 2022 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 resourcemanager
import (
"bytes"
"text/template"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
resourcemanagerconstants "github.com/gardener/gardener/pkg/component/resourcemanager/constants"
)
const (
monitoringPrometheusJobName = "gardener-resource-manager"
)
var (
monitoringScrapeConfigTmpl = `job_name: {{ .namePrefix }}` + 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: {{ .namePrefix }}` + resourcemanagerconstants.ServiceName + `;` + metricsPortName + `
- action: labelmap
regex: __meta_kubernetes_service_label_(.+)
- source_labels: [ __meta_kubernetes_pod_name ]
target_label: pod
- source_labels: [ __meta_kubernetes_namespace ]
target_label: namespace
`
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 (r *resourceManager) ScrapeConfigs() ([]string, error) {
var scrapeConfig bytes.Buffer
if err := monitoringScrapeConfigTemplate.Execute(&scrapeConfig, map[string]interface{}{"namespace": r.namespace, "namePrefix": r.values.NamePrefix}); err != nil {
return nil, err
}
return []string{scrapeConfig.String()}, nil
}
// AlertingRules returns the alerting rules for AlertManager.
func (r *resourceManager) AlertingRules() (map[string]string, error) {
return nil, nil
}