https://github.com/pravega/zookeeper-operator

    1. apiVersion: v1
    2. kind: Service
    3. metadata:
    4.   name: zk-hs
    5.   namespace: zookeeper-test
    6.   labels:
    7.     app: zk
    8. spec:
    9.   ports:
    10.   - port: 2888
    11.     name: server
    12.   - port: 3888
    13.     name: leader-election
    14.   clusterIP: None
    15.   selector:
    16.     app: zk
    17. ---
    18. apiVersion: v1
    19. kind: Service
    20. metadata:
    21.   name: zk-cs
    22.   namespace: zookeeper-test
    23.   labels:
    24.     app: zk
    25. spec:
    26.   type: NodePort
    27.   ports:
    28.   - port: 2181
    29.     targetPort: 2181
    30.     name: client
    31.     nodePort: 31666
    32.   selector:
    33.     app: zk
    34. ---
    35. apiVersion: policy/v1beta1
    36. kind: PodDisruptionBudget
    37. metadata:
    38.   name: zk-pdb
    39.   namespace: zookeeper-test
    40. spec:
    41.   selector:
    42.     matchLabels:
    43.       app: zk
    44.   maxUnavailable: 1
    45. ---
    46. apiVersion: apps/v1
    47. kind: StatefulSet
    48. metadata:
    49.   name: zok
    50.   namespace: zookeeper-test
    51. spec:
    52.   serviceName: zk-hs
    53.   replicas: 3
    54.   selector:
    55.     matchLabels:
    56.       app: zk
    57.   template:
    58.     metadata:
    59.       labels:
    60.         app: zk
    61.     spec:
    62.       affinity:
    63.         podAntiAffinity:
    64.           requiredDuringSchedulingIgnoredDuringExecution:
    65.             - labelSelector:
    66.                 matchExpressions:
    67.                   - key: "app"
    68.                     operator: In
    69.                     values:
    70.                     - zk
    71.               topologyKey: "kubernetes.io/hostname"
    72.       containers:
    73.       - name: kubernetes-zookeeper
    74.         imagePullPolicy: Always
    75.         image: 192.168.13.79:6278/middleware/zookeeper:v3.4.10
    76.         resources:
    77.           requests:
    78.             memory: "1Gi"
    79.             cpu: "0.5"
    80.         ports:
    81.         - containerPort: 2181
    82.           name: client
    83.         - containerPort: 2888
    84.           name: server
    85.         - containerPort: 3888
    86.           name: leader-election
    87.         command:
    88.         - sh
    89.         - -c
    90.         - "start-zookeeper \
    91.           --servers=3 \
    92.           --data_dir=/var/lib/zookeeper/data \
    93.           --data_log_dir=/var/lib/zookeeper/data/log \
    94.           --conf_dir=/opt/zookeeper/conf \
    95.           --client_port=2181 \
    96.           --election_port=3888 \
    97.           --server_port=2888 \
    98.           --tick_time=2000 \
    99.           --init_limit=10 \
    100.           --sync_limit=5 \
    101.           --heap=512M \
    102.           --max_client_cnxns=60 \
    103.           --snap_retain_count=3 \
    104.           --purge_interval=12 \
    105.           --max_session_timeout=40000 \
    106.           --min_session_timeout=4000 \
    107.           --log_level=INFO"
    108.         readinessProbe:
    109.           exec:
    110.             command:
    111.             - sh
    112.             - -c
    113.             - "zookeeper-ready 2181"
    114.           initialDelaySeconds: 10
    115.           timeoutSeconds: 5
    116.         livenessProbe:
    117.           exec:
    118.             command:
    119.             - sh
    120.             - -c
    121.             - "zookeeper-ready 2181"
    122.           initialDelaySeconds: 10
    123.           timeoutSeconds: 5
    124.         volumeMounts:
    125.         - name: datadir
    126.           mountPath: /var/lib/zookeeper
    127.   volumeClaimTemplates:
    128.   - metadata:
    129.       name: datadir
    130.     spec:
    131.       accessModes: [ "ReadWriteOnce" ]
    132.       resources:
    133.         requests:
    134.           storage: 1Gi
    [root@UR-20210425NAMA ~]# for i in 0 1 2; do kubectl -n zookeeper-test exec zok-$i zkServer.sh status; done
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
ZooKeeper JMX enabled by default
Using config: /usr/bin/../etc/zookeeper/zoo.cfg
Mode: follower
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
ZooKeeper JMX enabled by default
Using config: /usr/bin/../etc/zookeeper/zoo.cfg
Mode: leader
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
ZooKeeper JMX enabled by default
Using config: /usr/bin/../etc/zookeeper/zoo.cfg
Mode: follower
[root@UR-20210425NAMA ~]#

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