/
promconf.go
138 lines (132 loc) · 3.93 KB
/
promconf.go
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package cluster
import (
"github.com/prometheus/common/model"
promcfg "github.com/prometheus/prometheus/config"
"gopkg.in/yaml.v2"
"net/url"
)
//GenerateConfig generates prometheus config
func GenerateConfig(prometheusCfg []PrometheusCfg) []byte {
//Set Global Config
config := promcfg.Config{}
//apiurl, _ := url.Parse("http://kubernetes:443")
//config.AlertingConfig = promcfg.AlertingConfig{
// AlertmanagerConfigs: []*promcfg.AlertmanagerConfig{
// {
// ServiceDiscoveryConfig: promcfg.ServiceDiscoveryConfig{
// KubernetesSDConfigs: []*promcfg.KubernetesSDConfig{
// {
// APIServer: promcfg.URL{
// URL: apiurl,
// },
// Role: promcfg.KubernetesRole("pod"),
// TLSConfig: promcfg.TLSConfig{
// CAFile: "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt",
// },
// BearerTokenFile: "/var/run/secrets/kubernetes.io/serviceaccount/token",
// },
// },
// },
// RelabelConfigs: []*promcfg.RelabelConfig{
// {
// SourceLabels: model.LabelNames{
// model.LabelName("__meta_kubernetes_namespace"),
// },
// Action: "keep",
// Regex: promcfg.MustNewRegexp("default"),
// },
// {
// SourceLabels: model.LabelNames{
// model.LabelName("___meta_kubernetes_pod_label_app"),
// },
// Action: "keep",
// Regex: promcfg.MustNewRegexp("prometheus"),
// },
// {
// SourceLabels: model.LabelNames{
// model.LabelName("___meta_kubernetes_pod_label_component"),
// },
// Action: "keep",
// Regex: promcfg.MustNewRegexp("alertmanager"),
// },
// {
// SourceLabels: model.LabelNames{
// model.LabelName("__meta_kubernetes_pod_container_port_number"),
// },
// Action: "drop",
// Regex: promcfg.MustNewRegexp(""),
// },
// },
// },
// },
//}
config.GlobalConfig = promcfg.GlobalConfig{}
duration, _ := model.ParseDuration("15s")
config.GlobalConfig.EvaluationInterval = duration
duration, _ = model.ParseDuration("15s")
config.GlobalConfig.ScrapeInterval = duration
duration, _ = model.ParseDuration("7s")
config.GlobalConfig.ScrapeTimeout = duration
config.RuleFiles = []string{
"/etc/config/*.rules",
}
//Set Scrape Config
var ScrapeConfigs []*promcfg.ScrapeConfig
for _, cluster := range prometheusCfg {
scrapeConfig := promcfg.ScrapeConfig{}
scrapeConfig.JobName = cluster.Name
scrapeConfig.HonorLabels = true
scrapeConfig.MetricsPath = "/api/v1/namespaces/default/services/monitor-prometheus-server:80/proxy/prometheus/federate"
scrapeConfig.Scheme = "https"
scrapeConfig.Params = url.Values{
"match[]": {
`{job="kubernetes-nodes"}`,
`{job="kubernetes-pods"}`,
`{job="kubernetes-apiservers"}`,
`{job="kubernetes-service-endpoints"}`,
`{job="kubernetes-cadvisor"}`,
`{job="banzaicloud-pushgateway"}`,
`{job="node_exporter"}`,
},
}
scrapeConfig.RelabelConfigs = []*promcfg.RelabelConfig{
{
SourceLabels: model.LabelNames{
model.LabelName("__address__"),
},
Action: "replace",
Regex: promcfg.MustNewRegexp(`(.+):(?:\d+)`),
Replacement: "${1}",
TargetLabel: "cluster",
},
}
scrapeConfig.HTTPClientConfig = promcfg.HTTPClientConfig{
TLSConfig: promcfg.TLSConfig{
CAFile: cluster.CaFilePath,
CertFile: cluster.CertFilePath,
KeyFile: cluster.KeyFile,
InsecureSkipVerify: true,
},
}
scrapeConfig.ServiceDiscoveryConfig = promcfg.ServiceDiscoveryConfig{
StaticConfigs: []*promcfg.TargetGroup{
{
Targets: []model.LabelSet{
{
model.AddressLabel: model.LabelValue(cluster.Endpoint),
},
},
Labels: model.LabelSet{"cluster_name": model.LabelValue(cluster.Name)},
},
},
}
ScrapeConfigs = append(ScrapeConfigs, &scrapeConfig)
}
config.ScrapeConfigs = ScrapeConfigs
// Reload configuration?
out, err := yaml.Marshal(config)
if err != nil {
log.Errorf("%v", err)
}
return out
}