---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: smarthost
  namespace: mail
  annotations:
    configmap.reloader.stakater.com/reload: "smarthost-config"
spec:
  serviceName: smarthost
  replicas: 2
  selector:
    matchLabels:
      app.kubernetes.io/name: smarthost
  template:
    metadata:
      labels:
        app.kubernetes.io/name: smarthost
    spec:
      topologySpreadConstraints:
        - maxSkew: 1
          topologyKey: kubernetes.io/hostname
          whenUnsatisfiable: DoNotSchedule
          labelSelector:
            matchLabels:
              app.kubernetes.io/name: smarthost
      securityContext:
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: postfix
          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/postfix:0.1.0
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 25
              name: smtp
              protocol: TCP
          readinessProbe:
            tcpSocket:
              port: smtp
            initialDelaySeconds: 5
            periodSeconds: 10
          livenessProbe:
            exec:
              command: ["postfix", "status"]
            initialDelaySeconds: 30
            periodSeconds: 30
          # postfix master runs as root and drops to the postfix user per service.
          securityContext:
            allowPrivilegeEscalation: false
            capabilities:
              drop:
                - ALL
              add:
                - CHOWN
                - DAC_OVERRIDE
                - FOWNER
                - SETUID
                - SETGID
                - NET_BIND_SERVICE
          resources:
            requests:
              cpu: 50m
              memory: 128Mi
            limits:
              cpu: 500m
              memory: 512Mi
          volumeMounts:
            - name: spool
              mountPath: /var/spool/postfix
            - name: tls
              mountPath: /etc/postfix/tls
              readOnly: true
            - name: config
              mountPath: /etc/postfix/main.cf
              subPath: main.cf
              readOnly: true
            - name: config
              mountPath: /etc/postfix/master.cf
              subPath: master.cf
              readOnly: true
            - name: config
              mountPath: /etc/postfix/relay_domains
              subPath: relay_domains
              readOnly: true
            - name: config
              mountPath: /etc/postfix/transport
              subPath: transport
              readOnly: true
            - name: config
              mountPath: /etc/postfix/gateways.cidr
              subPath: gateways.cidr
              readOnly: true
            - name: config
              mountPath: /etc/postfix/mynetworks.cidr
              subPath: mynetworks.cidr
              readOnly: true
            - name: config
              mountPath: /etc/postfix/tls_policy
              subPath: tls_policy
              readOnly: true
      volumes:
        - name: config
          configMap:
            name: smarthost-config
        - name: tls
          secret:
            secretName: wildcard-main-unkin-net-tls
  volumeClaimTemplates:
    - metadata:
        name: spool
      spec:
        accessModes: [ReadWriteOnce]
        storageClassName: cephrbd-fast-delete
        resources:
          requests:
            storage: 50Gi