#
#
# The addition below can be executed after the invocation of
# the original service_delivery_controller_opnfv.yaml
# by invoking:
#  % kubectl create -f <(istioctl kube-inject --debug -f cassandra.yaml)
#
#
#
# Cassandra Statefulset
#
# Assumption:
#    - The Cassandra Statefulset right now assumes that
#    the service is deployed in the 'default' namespace
#    therefore the environment variable CASSANDRA_SEEDS is set to
#    "cassandra-0.cassandra.default.svc.cluster.local" below.
#    if you want to use your own name space other than 'default'
#    the value becomes:
#    "cassandra-0.cassandra.<NAMESPACE_NAME>.svc.cluster.local"
#    note that this value rely on a functioning DNS on kubernetes to resolve the IP
#
#    This static method can be made dynamic by using Helm
#    or bash script to replace the namespace on the fly.
#
#   - Cassandra launch only 1 replica in the cluster
#     to dynamically scale up or down, you can use:
#     kubectl edit statefulset cassandra
#     and edit the value of the replica key
#
#
#
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: cassandra
  name: cassandra
  namespace: clover-system
spec:
  clusterIP: None
  ports:
  - port: 9042
  selector:
    app: cassandra
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: cassandra
  labels:
    app: cassandra
  namespace: clover-system
spec:
  serviceName: cassandra
  replicas: 1
  selector:
    matchLabels:
      app: cassandra
  template:
    metadata:
      labels:
        app: cassandra
    spec:
      terminationGracePeriodSeconds: 1800
      containers:
      - name: cassandra
        image: cassandra:3
        imagePullPolicy: Always
        ports:
        - containerPort: 7000
          name: intra-node
        - containerPort: 7001
          name: tls-intra-node
        - containerPort: 7199
          name: jmx
        - containerPort: 9042
          name: cql
        resources:
          limits:
            cpu: "1000m"
            memory: 5Gi
          requests:
           cpu: "1000m"
           memory: 5Gi
        env:
          - name: MAX_HEAP_SIZE
            value: 512M
          - name: HEAP_NEWSIZE
            value: 100M
          - name: CASSANDRA_SEEDS
            value: "cassandra-0.cassandra.clover-system.svc.cluster.local"
          - name: CASSANDRA_CLUSTER_NAME
            value: "MyCassandraDemo"
          - name: CASSANDRA_DC
            value: "DC1-K8Demo"
          - name: CASSANDRA_RACK
            value: "Rack1-K8Demo"