142 lines
3.9 KiB
YAML
142 lines
3.9 KiB
YAML
# infrastructure/core/coredns-deployment.yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: coredns
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namespace: kube-system
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labels:
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k8s-app: kube-dns
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kubernetes.io/name: CoreDNS
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spec:
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progressDeadlineSeconds: 600
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replicas: 2
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revisionHistoryLimit: 0
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selector:
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matchLabels:
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k8s-app: kube-dns
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strategy:
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type: RollingUpdate
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rollingUpdate:
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maxSurge: 25%
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maxUnavailable: 1
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template:
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metadata:
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labels:
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k8s-app: kube-dns
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spec:
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containers:
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- name: coredns
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image: registry.bstein.dev/infra/coredns:1.12.1
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imagePullPolicy: IfNotPresent
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args:
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- -conf
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- /etc/coredns/Corefile
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ports:
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- containerPort: 53
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name: dns
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protocol: UDP
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- containerPort: 53
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name: dns-tcp
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protocol: TCP
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- containerPort: 9153
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name: metrics
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protocol: TCP
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livenessProbe:
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httpGet:
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path: /health
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port: 8080
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scheme: HTTP
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initialDelaySeconds: 60
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periodSeconds: 10
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timeoutSeconds: 1
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successThreshold: 1
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failureThreshold: 3
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readinessProbe:
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httpGet:
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path: /ready
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port: 8181
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scheme: HTTP
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periodSeconds: 2
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timeoutSeconds: 1
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successThreshold: 1
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failureThreshold: 3
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resources:
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limits:
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memory: 170Mi
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requests:
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cpu: 100m
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memory: 70Mi
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securityContext:
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allowPrivilegeEscalation: false
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capabilities:
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add:
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- NET_BIND_SERVICE
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drop:
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- all
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readOnlyRootFilesystem: true
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volumeMounts:
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- name: config-volume
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mountPath: /etc/coredns
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readOnly: true
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- name: custom-config-volume
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mountPath: /etc/coredns/custom
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readOnly: true
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affinity:
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nodeAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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nodeSelectorTerms:
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- matchExpressions:
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- key: hardware
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operator: In
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values:
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- rpi5
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- rpi4
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- key: node-role.kubernetes.io/worker
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operator: In
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values:
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- "true"
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dnsPolicy: Default
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nodeSelector:
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kubernetes.io/os: linux
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priorityClassName: system-cluster-critical
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restartPolicy: Always
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schedulerName: default-scheduler
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serviceAccountName: coredns
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tolerations:
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- key: CriticalAddonsOnly
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operator: Exists
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- key: node-role.kubernetes.io/control-plane
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operator: Exists
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effect: NoSchedule
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- key: node-role.kubernetes.io/master
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operator: Exists
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effect: NoSchedule
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topologySpreadConstraints:
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- maxSkew: 1
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topologyKey: kubernetes.io/hostname
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whenUnsatisfiable: DoNotSchedule
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labelSelector:
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matchLabels:
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k8s-app: kube-dns
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- maxSkew: 1
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topologyKey: topology.kubernetes.io/zone
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whenUnsatisfiable: ScheduleAnyway
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labelSelector:
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matchLabels:
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k8s-app: kube-dns
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volumes:
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- name: config-volume
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configMap:
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name: coredns
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defaultMode: 420
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items:
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- key: Corefile
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path: Corefile
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- key: NodeHosts
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path: NodeHosts
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- name: custom-config-volume
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configMap:
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name: coredns-custom
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optional: true
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defaultMode: 420
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