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RocketMQ Helm

部署

# git clone
# cd rocketmq-helm

kubectl create namespace rocketmq
# 部署测试集群, 单 Master
helm -n rocketmq install rocketmq -f examples/test.yml ./
# 部署生产集群, 多 Master 多 Slave
helm -n rocketmq install rocketmq -f examples/production.yaml ./

Broker 集群架构

单 Master 模式

broker:
  size:
    master: 1
    replica: 0

多 Master 模式

一个集群无Slave,全是Master,例如2个Master或者3个Master,这种模式的优缺点如下:

  • 优点:配置简单,单个Master宕机或重启维护对应用无影响,性能最高;
  • 缺点:单台机器宕机期间,这台机器上未被消费的消息在机器恢复之前不可订阅,消息实时性会受到影响。
broker:
  size:
    master: 3
    replica: 0

多 Master 多 Slave 模式

每个Master配置一个Slave,有多对Master-Slave,HA采用异步复制方式,主备有短暂消息延迟(毫秒级),这种模式的优缺点如下:

  • 优点:Master宕机后,消费者仍然可以从Slave消费,而且此过程对应用透明,不需要人工干预,性能同多Master模式几乎一样;
  • 缺点:Master宕机,磁盘损坏情况下会丢失少量消息 (已经同步到 Slave 的数据不受影响)
broker:
  size:
    master: 3
    replica: 1
# 3个 master 节点,每个 master 具有1个副节点,共6个 broker 节点

配置

# 集群名
clusterName: "cluster-production"

broker:
  # 3个 master 节点,每个 master 具有1个副节点,共6个 broker 节点
  size:
    master: 3
    replica: 1

  # 修改 broker 容器镜像地址和版本
  #image:
  #  repository: "apacherocketmq/rocketmq-broker"
  #  tag: "4.5.0-alpine-operator-0.3.0"

  persistence:
    enabled: true
    size: 8Gi
    #storageClass: gp2

  # 主节点资源分配
  master:
    brokerRole: ASYNC_MASTER
    jvmMemory: " -Xms4g -Xmx4g -Xmn1g "
    resources:
      limits:
        cpu: 4
        memory: 12Gi
      requests:
        cpu: 200m
        memory: 6Gi
  
  # 副节点资源分配
  replica:
    jvmMemory: " -Xms1g -Xmx1g -Xmn256m "
    resources:
      limits:
        cpu: 4
        memory: 8Gi
      requests:
        cpu: 50m
        memory: 2Gi

nameserver:
  replicaCount: 3

  # 修改 nameserver 容器镜像地址和版本
  #image:
  #  repository: "apacherocketmq/rocketmq-nameserver"
  #  tag: "4.5.0-alpine-operator-0.3.0"

  resources:
    limits:
      cpu: 4
      memory: 8Gi
    requests:
      cpu: 50m
      memory: 1Gi
  
  persistence:
    enabled: true
    size: 8Gi
    #storageClass: gp2

dashboard:
  enabled: true
  replicaCount: 1

  ingress:
    enabled: true
    className: "nginx"
    hosts:
      - host: rocketmq.example.com
        paths:
          - path: /
            pathType: ImplementationSpecific
    #tls:
    #  - secretName: example-com-tls
    #    hosts:
    #      - rocketmq.example.com

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