基础版

版本说明

k8s：v1.19.2
RabbitMQ 3.8.9 on Erlang 23.1.5

一、RabbitMQ简介

RabbitMQ是实现了高级消息队列协议（AMQP）的开源消息代理软件（亦称面向消息的中间件）。RabbitMQ服务器是用Erlang语言编写的，而集群和故障转移是构建在开放电信平台框架上的。AMQP：Advanced Message Queue，高级消息队列协议。它是应用层协议的一个开放标准，为面向消息的中间件设计，基于此协议的客户端与消息中间件可传递消息，并不受产品、开发语言灯条件的限制。AMQP具有如下的特性：

  • 可靠性(Reliablity)： 使用了一些机制来保证可靠性，比如持久化、传输确认、发布确认。

  • 灵活的路由(Flexible Routing)： 在消息进入队列之前，通过Exchange来路由消息。对于典型的路由功能，Rabbit已经提供了一些内置的Exchange来实现。针对更复杂的路由功能，可以将多个Exchange绑定在一起，也通过插件机制实现自己的Exchange。

  • 消息集群(Clustering)： 多个RabbitMQ服务器可以组成一个集群，形成一个逻辑Broker。

  • 高可用(Highly Avaliable Queues)： 队列可以在集群中的机器上进行镜像，使得在部分节点出问题的情况下队列仍然可用。

  • 多种协议(Multi-protocol)： 支持多种消息队列协议，如STOMP、MQTT等。

  • 多种语言客户端(Many Clients)： 几乎支持所有常用语言，比如Java、.NET、Ruby等。

  • 管理界面(Management UI)： 提供了易用的用户界面，使得用户可以监控和管理消息Broker的许多方面。

  • 跟踪机制(Tracing)： 如果消息异常，RabbitMQ提供了消息的跟踪机制，使用者可以找出发生了什么。

  • 插件机制(Plugin System)： 提供了许多插件，来从多方面进行扩展，也可以编辑自己的插件。

二、RabbitMQ集群部署

提示：下面的例示代码，要测试的话，要稍作修改

apiVersion: v1
kind: ConfigMap
metadata:
  name: rabbitmq-config
  namespace: public   ##可选，自身添加
data:
  enabled_plugins: |
      [rabbitmq_management,rabbitmq_peer_discovery_k8s].
  rabbitmq.conf: |
      ## Cluster formation. See https://www.rabbitmq.com/cluster-formation.html to learn more.
      cluster_formation.peer_discovery_backend  = rabbit_peer_discovery_k8s
      cluster_formation.k8s.host = kubernetes.default.svc.cluster.local
      ## Should RabbitMQ node name be computed from the pod's hostname or IP address?
      ## IP addresses are not stable, so using [stable] hostnames is recommended when possible.
      ## Set to "hostname" to use pod hostnames.
      ## When this value is changed, so should the variable used to set the RABBITMQ_NODENAME
      ## environment variable.
      log.file.level = debug
      log.console = true
      log.console.level = debug
      cluster_formation.k8s.address_type = hostname
      ## How often should node cleanup checks run?
      cluster_formation.node_cleanup.interval = 30
      ## Set to false if automatic removal of unknown/absent nodes
      ## is desired. This can be dangerous, see
      ##  * https://www.rabbitmq.com/cluster-formation.html#node-health-checks-and-cleanup
      ##  * https://groups.google.com/forum/#!msg/rabbitmq-users/wuOfzEywHXo/k8z_HWIkBgAJ
      cluster_formation.node_cleanup.only_log_warning = true
      cluster_partition_handling = autoheal
      ## See https://www.rabbitmq.com/ha.html#master-migration-data-locality
      queue_master_locator=min-masters
      ## This is just an example.
      ## This enables remote access for the default user with well known credentials.
      ## Consider deleting the default user and creating a separate user with a set of generated
      ## credentials instead.
      ## Learn more at https://www.rabbitmq.com/access-control.html#loopback-users
      loopback_users.guest = false
---
apiVersion: apps/v1
# See the Prerequisites section of https://www.rabbitmq.com/cluster-formation.html#peer-discovery-k8s.
kind: StatefulSet
metadata:
  name: rabbitmq
  namespace: public   ##可选，自身添加
spec:
  serviceName: rabbitmq
  # Three nodes is the recommended minimum. Some features may require a majority of nodes
  # to be available.
  replicas: 3
  volumeClaimTemplates: []
  selector:
    matchLabels:
      app: rabbitmq
  template:
    metadata:
      labels:
        app: rabbitmq  #源码是没有这个，但会报错
    spec:
    #  serviceAccountName: rabbitmq
      terminationGracePeriodSeconds: 10
      nodeSelector:
        # Use Linux nodes in a mixed OS kubernetes cluster.
        # Learn more at https://kubernetes.io/docs/reference/kubernetes-api/labels-annotations-taints/#kubernetes-io-os
        kubernetes.io/os: linux
      containers:
      - name: rabbitmq-k8s
        image: rabbitmq:3.8
        volumeMounts:
          - name: config-volume
            mountPath: /etc/rabbitmq
        # Learn more about what ports various protocols use
        # at https://www.rabbitmq.com/networking.html#ports
        ports:
          - name: http
            protocol: TCP
            containerPort: 15672
          - name: amqp
            protocol: TCP
            containerPort: 5672
        livenessProbe:
          exec:
            # This is just an example. There is no "one true health check" but rather
            # several rabbitmq-diagnostics commands that can be combined to form increasingly comprehensive
            # and intrusive health checks.
            # Learn more at https://www.rabbitmq.com/monitoring.html#health-checks.
            #
            # Stage 2 check:
            command: ["rabbitmq-diagnostics", "status"]
          initialDelaySeconds: 60
          # See https://www.rabbitmq.com/monitoring.html for monitoring frequency recommendations.
          periodSeconds: 60
          timeoutSeconds: 15
        readinessProbe:
          exec:
            # This is just an example. There is no "one true health check" but rather
            # several rabbitmq-diagnostics commands that can be combined to form increasingly comprehensive
            # and intrusive health checks.
            # Learn more at https://www.rabbitmq.com/monitoring.html#health-checks.
            #
            # Stage 1 check:
            command: ["rabbitmq-diagnostics", "ping"]
          initialDelaySeconds: 20
          periodSeconds: 60
          timeoutSeconds: 10
		  # IfNotPresent,Always
        imagePullPolicy: IfNotPresent #默认Always
        env:
          - name: MY_POD_NAME
            valueFrom:
              fieldRef:
                apiVersion: v1
                fieldPath: metadata.name
          - name: MY_POD_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: RABBITMQ_USE_LONGNAME
            value: "true"
          # See a note on cluster_formation.k8s.address_type in the config file section
          - name: K8S_SERVICE_NAME
            value: rabbitmq
          - name: RABBITMQ_NODENAME
            value: rabbit@$(MY_POD_NAME).$(K8S_SERVICE_NAME).$(MY_POD_NAMESPACE).svc.cluster.local
          - name: K8S_HOSTNAME_SUFFIX
            value: .$(K8S_SERVICE_NAME).$(MY_POD_NAMESPACE).svc.cluster.local
          - name: RABBITMQ_ERLANG_COOKIE
            value: "mycookie"  #生成一个erlang.cookie的文件：echo $(openssl rand -base64 32) > erlang.cookie，复制内容覆盖"mycookie"
      volumes:
        - name: config-volume
          configMap:
            name: rabbitmq-config
            items:
            - key: rabbitmq.conf
              path: rabbitmq.conf
            - key: enabled_plugins
              path: enabled_plugins
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: rabbitmq-peer-discovery-rbac
  namespace: public   ##可选，自身添加
rules:
- apiGroups: 
    - ""
  resources: 
    - endpoints
  verbs: 
    - get
    - list
    - watch
- apiGroups:
    - ""
  resources:
    - events
  verbs:
    - create
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: rabbitmq-peer-discovery-rbac
  namespace: public   ##可选，自身添加
subjects:
- kind: ServiceAccount
  name: default
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: rabbitmq-peer-discovery-rbac
---
kind: Service
apiVersion: v1
metadata:
  name: rabbitmq
  namespace: public   ##可选，自身添加
spec:
  type: NodePort
  ports:
   - name: http
     protocol: TCP
     port: 15672
     targetPort: 15672
     nodePort: 31672
   - name: amqp
     protocol: TCP
     port: 5672
     targetPort: 5672
     nodePort: 30672
  selector:
    app: rabbitmq

三、部署验证

在浏览器中输入：http://IP:31672/，访问部署好的RabbitMQ。在登录页面输入用户名和密码（此处初始guest/guest），系统将会进入RabbitMQ的主页。
在这里插入图片描述

四、官方源码

源码地址

#configMap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: rabbitmq-config
data:
  enabled_plugins: |
      [rabbitmq_management,rabbitmq_peer_discovery_k8s].
  rabbitmq.conf: |
      ## Cluster formation. See https://www.rabbitmq.com/cluster-formation.html to learn more.
      cluster_formation.peer_discovery_backend  = rabbit_peer_discovery_k8s
      cluster_formation.k8s.host = kubernetes.default.svc.cluster.local
      ## Should RabbitMQ node name be computed from the pod's hostname or IP address?
      ## IP addresses are not stable, so using [stable] hostnames is recommended when possible.
      ## Set to "hostname" to use pod hostnames.
      ## When this value is changed, so should the variable used to set the RABBITMQ_NODENAME
      ## environment variable.
      log.file.level = debug
      log.console = true
      log.console.level = debug
      cluster_formation.k8s.address_type = hostname
      ## How often should node cleanup checks run?
      cluster_formation.node_cleanup.interval = 30
      ## Set to false if automatic removal of unknown/absent nodes
      ## is desired. This can be dangerous, see
      ##  * https://www.rabbitmq.com/cluster-formation.html#node-health-checks-and-cleanup
      ##  * https://groups.google.com/forum/#!msg/rabbitmq-users/wuOfzEywHXo/k8z_HWIkBgAJ
      cluster_formation.node_cleanup.only_log_warning = true
      cluster_partition_handling = autoheal
      ## See https://www.rabbitmq.com/ha.html#master-migration-data-locality
      queue_master_locator=min-masters
      ## This is just an example.
      ## This enables remote access for the default user with well known credentials.
      ## Consider deleting the default user and creating a separate user with a set of generated
      ## credentials instead.
      ## Learn more at https://www.rabbitmq.com/access-control.html#loopback-users
      loopback_users.guest = false

#deployment.yaml
apiVersion: apps/v1
# See the Prerequisites section of https://www.rabbitmq.com/cluster-formation.html#peer-discovery-k8s.
kind: StatefulSet
metadata:
  name: rabbitmq
spec:
  serviceName: rabbitmq
  # Three nodes is the recommended minimum. Some features may require a majority of nodes
  # to be available.
  replicas: 3
  volumeClaimTemplates: []
  selector:
    matchLabels:
      app: rabbitmq
  template:
    spec:
    #  serviceAccountName: rabbitmq
      terminationGracePeriodSeconds: 10
      nodeSelector:
        # Use Linux nodes in a mixed OS kubernetes cluster.
        # Learn more at https://kubernetes.io/docs/reference/kubernetes-api/labels-annotations-taints/#kubernetes-io-os
        kubernetes.io/os: linux
      containers:
      - name: rabbitmq-k8s
        image: rabbitmq:3.8
        volumeMounts:
          - name: config-volume
            mountPath: /etc/rabbitmq
        # Learn more about what ports various protocols use
        # at https://www.rabbitmq.com/networking.html#ports
        ports:
          - name: http
            protocol: TCP
            containerPort: 15672
          - name: amqp
            protocol: TCP
            containerPort: 5672
        livenessProbe:
          exec:
            # This is just an example. There is no "one true health check" but rather
            # several rabbitmq-diagnostics commands that can be combined to form increasingly comprehensive
            # and intrusive health checks.
            # Learn more at https://www.rabbitmq.com/monitoring.html#health-checks.
            #
            # Stage 2 check:
            command: ["rabbitmq-diagnostics", "status"]
          initialDelaySeconds: 60
          # See https://www.rabbitmq.com/monitoring.html for monitoring frequency recommendations.
          periodSeconds: 60
          timeoutSeconds: 15
        readinessProbe:
          exec:
            # This is just an example. There is no "one true health check" but rather
            # several rabbitmq-diagnostics commands that can be combined to form increasingly comprehensive
            # and intrusive health checks.
            # Learn more at https://www.rabbitmq.com/monitoring.html#health-checks.
            #
            # Stage 1 check:
            command: ["rabbitmq-diagnostics", "ping"]
          initialDelaySeconds: 20
          periodSeconds: 60
          timeoutSeconds: 10
        imagePullPolicy: Always
        env:
          - name: MY_POD_NAME
            valueFrom:
              fieldRef:
                apiVersion: v1
                fieldPath: metadata.name
          - name: MY_POD_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: RABBITMQ_USE_LONGNAME
            value: "true"
          # See a note on cluster_formation.k8s.address_type in the config file section
          - name: K8S_SERVICE_NAME
            value: rabbitmq
          - name: RABBITMQ_NODENAME
            value: rabbit@$(MY_POD_NAME).$(K8S_SERVICE_NAME).$(MY_POD_NAMESPACE).svc.cluster.local
          - name: K8S_HOSTNAME_SUFFIX
            value: .$(K8S_SERVICE_NAME).$(MY_POD_NAMESPACE).svc.cluster.local
          - name: RABBITMQ_ERLANG_COOKIE
            value: "mycookie"
      volumes:
        - name: config-volume
          configMap:
            name: rabbitmq-config
            items:
            - key: rabbitmq.conf
              path: rabbitmq.conf
            - key: enabled_plugins
              path: enabled_plugins

#deployment_rbac.yaml
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: rabbitmq-peer-discovery-rbac
 
rules:
- apiGroups: 
    - ""
  resources: 
    - endpoints
  verbs: 
    - get
    - list
    - watch
- apiGroups:
    - ""
  resources:
    - events
  verbs:
    - create
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: rabbitmq-peer-discovery-rbac
subjects:
- kind: ServiceAccount
  name: default
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: rabbitmq-peer-discovery-rbac

#service.yaml
kind: Service
apiVersion: v1
metadata:
  name: rabbitmq
spec:
  type: NodePort
  ports:
   - name: http
     protocol: TCP
     port: 15672
     targetPort: 15672
     nodePort: 31672
   - name: amqp
     protocol: TCP
     port: 5672
     targetPort: 5672
     nodePort: 30672
  selector:
    app: rabbitmq

#kustomization.yaml
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
commonLabels:
  app: rabbitmq

resources:
- configMap.yaml
- deployment.yaml
- deployment_rbac.yaml
- service.yaml
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