clickhouse高可用k8s集群搭建

前提条件

安装一个k8s集群
安装helm工具

1，安装operator

helm repo add ck https://radondb.github.io/radondb-clickhouse-kubernetes/
helm repo update
kubectl create namespace database-clickhouse
helm install clickhouse-operator -n database-clickhouse ck/clickhouse-operator

2，配置clickhouse

values.yaml

# Configuration for the ClickHouse cluster to be started
clickhouse:
  # default cluster name
  clusterName: all-nodes
  # shards count can not scale in this value.
  shardscount: 1
  # replicas count can not modify this value when the cluster has already created.
  replicascount: 2

  # ClickHouse server image configuration
  image: radondb/clickhouse-server:21.1.3.32
  imagePullPolicy: IfNotPresent

  resources:
    memory: "1Gi"
    cpu: "0.5"
    storage: "10Gi"

  # User Configuration
  user:
    - username: clickhouse
      password: c1ickh0use0perator
      networks:
        - "127.0.0.1"
        - "::/0"

  ports:
    # Port for the native interface, see https://clickhouse.tech/docs/en/interfaces/tcp/
    tcp: 9000

    # Port for HTTP/REST interface, see https://clickhouse.tech/docs/en/interfaces/http/
    http: 8123

  # servicee, value: ClusterIP/NodePort/LoadBalancer
  # see https://kubernetes.io/docs/concepts/services-networking/service/#publishing-services-service-types
  svc:
    type: ClusterIP
    # If type: LoadBalancer, can use https://docs.qingcloud.com/product/container/qke/index#%E4%B8%8E-qingcloud-iaas-%E7%9A%84%E6%95%B4%E5%90%88
    qceip:

# Configuration for the busybox container
busybox:
  image: busybox
  imagePullPolicy: IfNotPresent

# required, zookeeper configuration
zookeeper:
  # If you want to create ZooKeeper cluster by operator, use the following configuration
  install: true
  replicas: 3
  port: 2181
  image: radondb/zookeeper:3.6.1
  imagePullPolicy: IfNotPresent

  # If you don’t want Operator to create a ZooKeeper cluster, we also provide a ZooKeeper deployment file,
  # you can customize the following configuration.
  # install: false
  # replicas: specify by yourself
  # image: radondb/zookeeper:3.6.2
  # imagePullPolicy: specify by yourself
  # resources:
  #   memory: specify by yourself
  #   cpu: specify by yourself
  #   storage: specify by yourself

3，部署clickhouse

helm install clickhouse-cluster ck/clickhouse-cluster -n database-clickhouse\
  -f values.yaml

备注：其中values.yaml为步骤2中的配置项

参考链接：

1. 在 Kubernetes 上部署 RadonDB ClickHouse
2. k8s集群搭建clickhouse集群