Platform Management

Introductie

Deze documentatie beschrijft de procedures en best practices voor het beheer van het Kubernetes platform binnen de organisatie. Het platform is opgezet met een focus op schaalbaarheid, beveiliging en onderhoudbaarheid.

Platform Architectuur

1. Infrastructuur Components

Component	Functie
Google Kubernetes Engine	Container orchestratie
Cloud DNS	DNS management
Cloud CDN	Content delivery

2. Monitoring Stack

Prometheus: Metrics collection
Grafana: Visualisatie
Alertmanager: Alert routing

Operationele Procedures

1. Cluster Management

# Cluster status
kubectl get nodes
kubectl top nodes

# Resource monitoring
kubectl describe node <node-name>

2. Namespace Management

# namespace.yaml
apiVersion: v1
kind: Namespace
metadata:
  name: example
  labels:
    environment: production

3. Resource Quotas

# quota.yaml
apiVersion: v1
kind: ResourceQuota
metadata:
  name: compute-resources
spec:
  hard:
    requests.cpu: "4"
    requests.memory: 4Gi
    limits.cpu: "8"
    limits.memory: 8Gi

Security

1. Access Control

RBAC implementatie
Service accounts
Network policies
Pod security policies

2. Network Security

# network-policy.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: default-deny
spec:
  podSelector: {}
  policyTypes:
    - Ingress
    - Egress

3. Secret Management

1password integratie
Encrypted secrets

Monitoring & Alerting

1. Prometheus Configuratie

# prometheus-config.yaml
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: app-metrics
spec:
  selector:
    matchLabels:
      app: example
  endpoints:
    - port: metrics

2. Alert Regels

# alert-rules.yaml
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: platform-alerts
spec:
  groups:
    - name: platform
      rules:
        - alert: HighCPUUsage
          expr: node_cpu_usage_percentage > 80
          for: 5m
          labels:
            severity: warning

Maintenance

1. Update Procedures

Cluster upgrades
Node pool management
Application updates

2. Performance Optimalisatie

Resource requests/limits

Troubleshooting

1. Common Issues

Issue	Oplossing
Node pressure	Scale node pool
Memory leaks	Analyze metrics
Network issues	Check policies

2. Debug Tools

# Container logs
kubectl logs -f deployment/example

# Resource usage
kubectl top pods -n example

# Events monitoring
kubectl get events --sort-by=.metadata.creationTimestamp