[大数据]k8s下部署k8s-cluster-operator

• k8s版本1.21.1
• rabbitmq 3.8.19
• cluster 1.9

1.安装rabbitmq的cluster

rabbitmq的cluster模式为vmware开源维护：https://github.com/rabbitmq/cluster-operator

# 最好wget下来再安装
kubectl apply -f "https://github.com/rabbitmq/cluster-operator/releases/latest/download/cluster-operator.yml"

2. 安装rabbitmq

官方配置详解https://www.rabbitmq.com/kubernetes/operator/using-operator.html#override
官方demo在https://github.com/rabbitmq/cluster-operator/tree/main/docs/examples/production-ready

vim rabbitmq.yaml

apiVersion: rabbitmq.com/v1beta1
kind: RabbitmqCluster
metadata:
  labels:               #实例标签
    app: rabbitmq
  name: rabbitmq         #实例名字
  namespace: rabbitmq-system
spec:
  image: rabbitmq:3.8.19-management     #实例使用镜像，记住一定选择management版本的
  service:                #实例的service
    type: NodePort           #service类型
  persistence:              #配置持久化
    storage: 5Gi            #pvc大小
    storageClassName: managed-nfs-storage         #使用的storageClass名字
  replicas: 3             #配置实例个数
  resources:              #配置实例资源限制
    limits:
      cpu: 200m
      memory: 200Mi
    requests:
      cpu: 200m
      memory: 200Mi
  rabbitmq:
    additionalConfig: |         #为实例添加自定义RabbitMQ配置
      cluster_partition_handling = pause_minority
      vm_memory_high_watermark_paging_ratio = 0.99
      disk_free_limit.relative = 1.0
      collect_statistics_interval = 10000
    additionalPlugins:
      - rabbitmq_top
  terminationGracePeriodSeconds: 60   #配置实例终止宽限期

获取登录用户名和密码

kubectl -n rabbitmq-system  get secret rabbitmq-default-user -o jsonpath="{.data.username}" | base64 --decode
kubectl -n rabbitmq-system  get secret rabbitmq-default-user -o jsonpath="{.data.password}" | base64 --decode