provisioning-catalog/components/nats/cluster/templates/statefulset.yaml.j2

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{ taskserv.name }}
  namespace: {{ taskserv.namespace }}
  labels:
    app.kubernetes.io/name: {{ taskserv.name }}
    app.kubernetes.io/managed-by: provisioning
spec:
  serviceName: {{ taskserv.name }}
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: {{ taskserv.name }}
  template:
    metadata:
      labels:
        app.kubernetes.io/name: {{ taskserv.name }}
        app.kubernetes.io/managed-by: provisioning
    spec:
      {% if taskserv.placement is defined and taskserv.placement.node_class %}
      affinity:
        nodeAffinity:
          {% if taskserv.placement.mode == "require" %}
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: node-class.{{ taskserv.placement.node_class.0 }}
                    operator: In
                    values: ["true"]
          {% else %}
          preferredDuringSchedulingIgnoredDuringExecution:
            {% for c in taskserv.placement.node_class %}
            - weight: {{ 100 - loop.index0 * 10 }}
              preference:
                matchExpressions:
                  - key: node-class.{{ c }}
                    operator: In
                    values: ["true"]
            {% endfor %}
          {% endif %}
      {% endif %}
      securityContext:
        fsGroup: 1000
      containers:
        - name: {{ taskserv.name }}
          image: {{ taskserv.image }}
          args: ["-c", "/etc/nats/nats.conf"]
          ports:
            - containerPort: {{ taskserv.port }}
              name: client
            - containerPort: {{ taskserv.monitor_port }}
              name: monitor
          # envFrom: inject ALL keys from `<name>-credentials` Secret as env
          # vars in one go. Required for multi-user nkey mode where the
          # number of pubkey vars (NATS_<NAME>_PUB) is dynamic, set by the
          # operator-side credential delivery rather than by the StatefulSet
          # template. Back-compat: legacy single-NATS_NKEY_PUB deployments
          # still work — the key is just one of the many envFrom keys.
          envFrom:
            - secretRef:
                name: {{ taskserv.name }}-credentials
          volumeMounts:
            - name: data
              mountPath: {{ taskserv.data_dir }}
            - name: config
              mountPath: /etc/nats
          {% if taskserv.probes is defined and taskserv.probes.readiness is defined %}
          readinessProbe:
            {% if taskserv.probes.readiness.type == "tcp" %}
            tcpSocket:
              port: {{ taskserv.probes.readiness.port | default(value=taskserv.monitor_port) }}
            {% else %}
            httpGet:
              path: {{ taskserv.probes.readiness.path }}
              port: {{ taskserv.probes.readiness.port | default(value=taskserv.monitor_port) }}
            {% endif %}
            initialDelaySeconds: {{ taskserv.probes.readiness.initial_delay }}
            periodSeconds: {{ taskserv.probes.readiness.period }}
            failureThreshold: {{ taskserv.probes.readiness.failure_threshold }}
          {% else %}
          readinessProbe:
            httpGet:
              path: /healthz
              port: {{ taskserv.monitor_port }}
            initialDelaySeconds: 5
            periodSeconds: 5
            failureThreshold: 6
          {% endif %}
          {% if taskserv.probes is defined and taskserv.probes.liveness is defined %}
          livenessProbe:
            {% if taskserv.probes.liveness.type == "tcp" %}
            tcpSocket:
              port: {{ taskserv.probes.liveness.port | default(value=taskserv.monitor_port) }}
            {% else %}
            httpGet:
              path: {{ taskserv.probes.liveness.path }}
              port: {{ taskserv.probes.liveness.port | default(value=taskserv.monitor_port) }}
            {% endif %}
            initialDelaySeconds: {{ taskserv.probes.liveness.initial_delay }}
            periodSeconds: {{ taskserv.probes.liveness.period }}
            failureThreshold: {{ taskserv.probes.liveness.failure_threshold }}
          {% else %}
          livenessProbe:
            httpGet:
              path: /healthz
              port: {{ taskserv.monitor_port }}
            initialDelaySeconds: 15
            periodSeconds: 10
            failureThreshold: 3
          {% endif %}
          {% if taskserv.resources_effective is defined %}
          resources:
            requests:
              cpu: "{{ taskserv.resources_effective.cpu.request }}"
              memory: "{{ taskserv.resources_effective.memory.request }}"
            limits:
              cpu: "{{ taskserv.resources_effective.cpu.limit }}"
              memory: "{{ taskserv.resources_effective.memory.limit }}"
          {% else %}
          resources:
            requests:
              cpu: "200m"
              memory: "512Mi"
            limits:
              cpu: "1000m"
              memory: "1Gi"
          {% endif %}
      volumes:
        - name: config
          configMap:
            name: {{ taskserv.name }}-config
        - name: data
          persistentVolumeClaim:
            claimName: {{ taskserv.name }}-data