Kubernetes

Periodically query the K8s API-server (the same endpoint kubectl uses) to collect cluster-wide state: Node count, per-Node health, per-Pod status, etc.

Prerequisites

• Deploy SmartGate inside the target cluster.
• ONE platform can reach the cluster network.

Getting Started

SmartGate follows the Prometheus-Operator CRD pattern.
Declare what you want to scrape with two custom resources:

CRD	Purpose
PodMonitor	Scrape individual Pods (by label)
ServiceMonitor	Scrape Services (by label)

Minimal required manifests:

# PodMonitor 
apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
  namespace: bonree-agent # fixed namespace
  name: pod-monitor-{NAME_RANDOM_SUFFIX_NO} # choose unique name
spec:
  namespaceSelector:
    matchNames:
      # limit namespaces (omit = all)
      - defaultNamespace
  selector:
    matchLabels:
      # target Pod labels
      foo01: bar01
      foo02: bar02
  podMetricsEndpoints:
    - scheme: https # http or https
      port: metrics 
      path: /metrics
      tlsConfig:
        insecureSkipVerify: true
      relabelings: []

# ServiceMonitor 
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  namespace: bonree-agent # fixed namespace
  name: service-monitor-{NAME_RANDOM_SUFFIX_NO} # choose unique name
spec:
  namespaceSelector:
    matchNames:
      # limit namespaces (omit = all)
      - defaultNamespace
  selector:
    matchLabels:
      # target Pod labels
      foo01: bar01
      foo02: bar02
  endpoints:
    - scheme: https # http or https
      path: /metrics 
      bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
      tlsConfig:
        insecureSkipVerify: true
      relabelings: []

• Apply the manifests; SmartGate watches the CRDs and starts scraping automatically.

Configure Data Stream

• ONE provides out-of-the-box streams for:
  • API Server
  • Kube Contiller Manager
  • Kube Scheduler
  • CoreDNS
  • ETCD
  • Kubelet
  • Nginx Ingress Controller
  • Kube State Metrics
• You can also build custom streams for any additional scenario.

Verification

• Review registered Metrics under Insight → Data Model → Metrics.
• Explore live data under Insight → Data Explorer.