homelab/k8s/base/poddisruptionbudgets.yaml

# k8s/base/poddisruptionbudgets.yaml
# PodDisruptionBudgets ensure zero-downtime cluster maintenance.
# Allows Kubernetes to gracefully drain nodes during updates/maintenance
# without violating availability guarantees.

---
# Observability stack
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: grafana
  namespace: logging
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: grafana

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: loki
  namespace: logging
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app: loki

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: prometheus
  namespace: monitoring
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: prometheus

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: prometheus-operator
  namespace: monitoring
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: kube-prometheus-stack-operator

---
# IAM stack
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: authentik
  namespace: iam
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: authentik

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: vault
  namespace: iam
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: vault

---
# CI/CD stack
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: argocd-server
  namespace: cicd
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: argocd-server

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: argocd-repo-server
  namespace: cicd
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: argocd-repo-server

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: forgejo
  namespace: forge
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app: forgejo

---
# Ingress & network
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: ingress-nginx
  namespace: ingress-nginx
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: ingress-nginx

---
# Certificate management
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: cert-manager
  namespace: cert-manager
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: cert-manager

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: cert-manager-webhook
  namespace: cert-manager
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: cert-manager-webhook

---
# Storage & replication
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: minio-az-a
  namespace: storage
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app: minio
      instance: az-a

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: minio-az-b
  namespace: storage
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app: minio
      instance: az-b

---
# Database
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: cnpg-cluster
  namespace: ddb
spec:
  minAvailable: 2
  selector:
    matchLabels:
      cnpg.io/cluster: ddb-cluster

---
# Messaging
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: kafka-broker
  namespace: sqs
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app.kubernetes.io/name: kafka
      app.kubernetes.io/component: kafka-broker

---
# Workflow orchestration
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: temporal-cassandra
  namespace: temporal
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app: cassandra

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: temporal-server
  namespace: temporal
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: temporal
      app.kubernetes.io/component: server

---
# LLM inference
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: ollama
  namespace: llm
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app: ollama

---
# Cluster DNS
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: coredns
  namespace: kube-system
spec:
  minAvailable: 1
  selector:
    matchLabels:
      k8s-app: kube-dns

---
# Cilium networking
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: cilium-agent
  namespace: kube-system
spec:
  minAvailable: 1
  selector:
    matchLabels:
      k8s-app: cilium

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: cilium-operator
  namespace: kube-system
spec:
  minAvailable: 1
  selector:
    matchLabels:
      io.cilium/app: operator

---
# Longhorn storage
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: longhorn-manager
  namespace: longhorn-system
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app: longhorn-manager

---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: longhorn-csi-plugin
  namespace: longhorn-system
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app: csi-provisioner

---
# System components
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: kube-state-metrics
  namespace: monitoring
spec:
  minAvailable: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: kube-state-metrics