VictoriaMetrics/lib/promscrape/discovery/kubernetes/kubernetes.go
Nikolay Khramchikhin af994562c8 Added endpointslices discovery to k8s api (#760)
This is similar to https://github.com/prometheus/prometheus/pull/6838 , which will be added in Prometheus v2.21.
See https://github.com/prometheus/prometheus/releases/tag/v2.21.0-rc.1

* Added endpointslices discovery to k8s api

Started from 1.17 k8s version endpointslices is beta,
it allows to query k8s api for endpoints more efficient.
It presents at scrape_config.yaml as separate role for kubernetes_sd_config.
kubernetes_sd_config:
- role: endpointslices

* fixed typos, changed EndpointConditions signature - with values instead of pointers
2020-09-11 12:24:50 +03:00

61 lines
1.9 KiB
Go

package kubernetes
import (
"fmt"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
)
// SDConfig represents kubernetes-based service discovery config.
//
// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#kubernetes_sd_config
type SDConfig struct {
APIServer string `yaml:"api_server"`
Role string `yaml:"role"`
BasicAuth *promauth.BasicAuthConfig `yaml:"basic_auth"`
BearerToken string `yaml:"bearer_token"`
BearerTokenFile string `yaml:"bearer_token_file"`
TLSConfig *promauth.TLSConfig `yaml:"tls_config"`
Namespaces Namespaces `yaml:"namespaces"`
Selectors []Selector `yaml:"selectors"`
}
// Namespaces represents namespaces for SDConfig
type Namespaces struct {
Names []string `yaml:"names"`
}
// Selector represents kubernetes selector.
//
// See https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/
// and https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
type Selector struct {
Role string `yaml:"role"`
Label string `yaml:"label"`
Field string `yaml:"field"`
}
// GetLabels returns labels for the given sdc and baseDir.
func GetLabels(sdc *SDConfig, baseDir string) ([]map[string]string, error) {
cfg, err := getAPIConfig(sdc, baseDir)
if err != nil {
return nil, fmt.Errorf("cannot create API config: %w", err)
}
switch sdc.Role {
case "node":
return getNodesLabels(cfg)
case "service":
return getServicesLabels(cfg)
case "pod":
return getPodsLabels(cfg)
case "endpoints":
return getEndpointsLabels(cfg)
case "endpointslices":
return getEndpointSlicesLabels(cfg)
case "ingress":
return getIngressesLabels(cfg)
default:
return nil, fmt.Errorf("unexpected `role`: %q; must be one of `node`, `service`, `pod`, `endpoints` or `ingress`; skipping it", sdc.Role)
}
}