目录
前言
在此之前，需要了解rabbitmq的搭建。
k8s安装RabbitMQ主要有两种方式：helm和rabbitmq-peer-discovery-k8s插件。
k8s需要安装DNS组件，如：coreDNS。
通过helm搭建
helm的作用与安装请查看这篇文章
查看可使用tabbitmq-ha的版本
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[root@k8s-master01 ~]# helm search repo rabbitmq-ha NAME CHART VERSION APP VERSION DESCRIPTION aliyuncs/rabbitmq-ha 1.39.0 3.8.0 Highly available RabbitMQ cluster, the open sou... stable/rabbitmq-ha 1.0.0 3.7.3 Highly available RabbitMQ cluster, the open sou... |
拉取rabbitmq-ha
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helm pull aliyuncs/rabbitmq-ha |
会得到一个压缩包
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[root@k8s-master01 ~]# ls rabbitmq-ha-1.33.0.tgz #这个就只拉去的文件，可以解压 |
解压
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tar -xf rabbitmq-ha-*.tgz |
文件结构
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├── charts # 依赖文件 ├── Chart.yaml # 这个chart的版本信息 ├── templates #模板 │ ├── deployment.yaml │ ├── _helpers.tpl # 自定义的模板或者函数 │ ├── ingress.yaml │ ├── NOTES.txt #这个chart的信息 │ ├── serviceaccount.yaml │ ├── service.yaml │ └── tests │ └── test-connection.yaml └── values.yaml #配置全局变量或者一些参数 |
创建namespaces
helm指定namespaces，如果没有namespaces空间，就会报错。需要提前创建
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helm create rabbitmq-cluster |
运行rabbitmq集群
镜像配置方面，可以修改values.yaml
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[root@k8s-master01 rabbitmq-ha]# pwd /root/rabbitmq-ha [root@k8s-master01 rabbitmq-ha]# ls Chart.yaml OWNERS README.md templates values.yaml [root@k8s-master01 rabbitmq-ha]# helm install rabbitmq \ --namespace rabbitmq-cluster \ --set ingress.enabled=true,ingress.hostName=rabbitmq.akiraka.net \ --set rabbitmqUsername=aka,rabbitmqPassword=rabbitmq,managementPassword=rabbitmq,rabbitmqErlangCookie=secretcookie \ . |
查看集群
已经正常运行起来了
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root@k8s-master01 rabbitmq-ha]# kubectl get svc,pod,ingress -n rabbitmq-cluster NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/rabbitmq-rabbitmq-ha ClusterIP None <none> 15672/TCP,5672/TCP,4369/TCP 7m23s service/rabbitmq-rabbitmq-ha-discovery ClusterIP None <none> 15672/TCP,5672/TCP,4369/TCP 7m23s NAME READY STATUS RESTARTS AGE pod/rabbitmq-rabbitmq-ha-0 1/1 Running 0 7m23s pod/rabbitmq-rabbitmq-ha-1 1/1 Running 0 6m56s pod/rabbitmq-rabbitmq-ha-2 1/1 Running 0 6m34s NAME CLASS HOSTS ADDRESS PORTS AGE ingress.extensions/rabbitmq-rabbitmq-ha <none> rabbitmq.akiraka.net 10.96.107.62 80 7m23s |
编辑host，将域名rabbitmq.akiraka.net映射到任何一个节点IP，即可访问到rabbitmq的管理页面。
提示
如果想查看生成的yaml文件，可以通过添加参数--dry-run --debug获得：
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helm install rabbitmq \ --namespace rabbitmq-cluster \ --set ingress.enabled=true,ingress.hostName=rabbitmq.akiraka.net \ --set rabbitmqUsername=aka,rabbitmqPassword=rabbitmq,managementPassword=rabbitmq,rabbitmqErlangCookie=secretcookie \ --dry-run --debug . |
删除
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helm uninstall rabbitmq -n rabbitmq-cluster --keep-history |
通过rabbitmq-peer-discovery-k8s插件安装
rabbitmq-peer-discovery-k8s插件只支持3.6(不包括)以上的rabbitmq。这个插件主要是自动发现并加入rabbitmq集群：
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# 声明命名空间 apiVersion: v1 kind: Namespace metadata: name: rabbitmq-cluster # 命名空间 --- # Source: rabbitmq-ha/templates/serviceaccount.yaml apiVersion: v1 kind: ServiceAccount metadata: labels: app: rabbitmq-ha name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster automountServiceAccountToken: true --- # Source: rabbitmq-ha/templates/role.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: labels: app: rabbitmq-ha name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster rules: - apiGroups: [""] resources: ["endpoints"] verbs: ["get"] --- # Source: rabbitmq-ha/templates/rolebinding.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: labels: app: rabbitmq-ha name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster subjects: - kind: ServiceAccount name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: rabbitmq-rabbitmq-ha --- # Source: rabbitmq-ha/templates/secret.yaml apiVersion: v1 kind: Secret metadata: name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster labels: app: rabbitmq-ha type: Opaque # data的值必须是base64 # 执行命令：echo -n '值'|base64 生成 # 如果值使用明文，把data替换成stringData data: rabbitmq-username: "YWth" # rabbitmq用户名 rabbitmq-password: "cmFiYml0bXE=" # rabbitmq密码 rabbitmq-management-username: "bWFuYWdlbWVudA==" # 管理页面的用户名 rabbitmq-management-password: "cmFiYml0bXE=" # 管理页面的密码 rabbitmq-erlang-cookie: "c2VjcmV0Y29va2ll" # erlang.cookie definitions.json: "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" --- # Source: rabbitmq-ha/templates/configmap.yaml apiVersion: v1 kind: ConfigMap metadata: name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster labels: app: rabbitmq-ha data: # rabbitmq需要开启的插件 enabled_plugins: | [ rabbitmq_shovel, rabbitmq_shovel_management, rabbitmq_federation, rabbitmq_federation_management, rabbitmq_consistent_hash_exchange, rabbitmq_management, rabbitmq_peer_discovery_k8s ]. # rabbitmq的配置文件内容 rabbitmq.conf: | ## RabbitMQ configuration ## Ref: https://github.com/rabbitmq/rabbitmq-server/blob/master/docs/rabbitmq.conf.example ## Clustering cluster_formation.peer_discovery_backend = rabbit_peer_discovery_k8s cluster_formation.k8s.host = kubernetes.default.svc.cluster.local cluster_formation.k8s.address_type = hostname cluster_formation.node_cleanup.interval = 10 # Set to false if automatic cleanup of absent nodes is desired. # This can be dangerous, see http://www.rabbitmq.com/cluster-formation.html#node-health-checks-and-cleanup. cluster_formation.node_cleanup.only_log_warning = true cluster_partition_handling = autoheal management.load_definitions = /etc/definitions/definitions.json ## Memory-based Flow Control threshold vm_memory_high_watermark.absolute = 256MB --- # Source: rabbitmq-ha/templates/service-discovery.yaml apiVersion: v1 kind: Service metadata: name: rabbitmq-rabbitmq-ha-discovery namespace: rabbitmq-cluster labels: app: rabbitmq-ha spec: clusterIP: None # 无头服务（headless service） ports: - name: http protocol: TCP port: 15672 targetPort: http - name: amqp protocol: TCP port: 5672 targetPort: amqp - name: epmd protocol: TCP port: 4369 targetPort: epmd publishNotReadyAddresses: true selector: app: rabbitmq-ha release: rabbitmq type: ClusterIP # 集群内部访问 --- # Source: rabbitmq-ha/templates/service.yaml apiVersion: v1 kind: Service metadata: name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster labels: app: rabbitmq-ha spec: ports: - name: http protocol: TCP port: 15672 targetPort: http - name: amqp protocol: TCP port: 5672 targetPort: amqp - name: epmd protocol: TCP port: 4369 targetPort: epmd selector: app: rabbitmq-ha release: rabbitmq type: ClusterIP --- # Source: rabbitmq-ha/templates/statefulset.yaml apiVersion: apps/v1 kind: StatefulSet # rabbitmq使用有状态集（StatefulSet）部署 metadata: name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster labels: app: rabbitmq-ha spec: podManagementPolicy: OrderedReady serviceName: rabbitmq-rabbitmq-ha-discovery replicas: 3 updateStrategy: type: OnDelete selector: matchLabels: app: rabbitmq-ha template: metadata: labels: app: rabbitmq-ha release: rabbitmq spec: terminationGracePeriodSeconds: 10 securityContext: fsGroup: 101 runAsGroup: 101 runAsNonRoot: true runAsUser: 100 serviceAccountName: rabbitmq-rabbitmq-ha initContainers: - name: bootstrap image: busybox:1.30.1 imagePullPolicy: IfNotPresent command: ['sh'] args: - "-c" - | set -ex cp /configmap/* /etc/rabbitmq echo "${RABBITMQ_ERLANG_COOKIE}" > /var/lib/rabbitmq/.erlang.cookie env: - name: POD_NAME valueFrom: fieldRef: apiVersion: v1 fieldPath: metadata.name - name: RABBITMQ_MNESIA_DIR value: /var/lib/rabbitmq/mnesia/rabbit@$(POD_NAME).rabbitmq-rabbitmq-ha-discovery.rabbitmq-cluster.svc.cluster.local - name: RABBITMQ_ERLANG_COOKIE valueFrom: secretKeyRef: name: rabbitmq-rabbitmq-ha key: rabbitmq-erlang-cookie volumeMounts: - name: configmap mountPath: /configmap - name: config mountPath: /etc/rabbitmq - name: data mountPath: /var/lib/rabbitmq containers: - name: rabbitmq-ha image: rabbitmq:3.8.0-alpine # rabbitmq镜像地址 imagePullPolicy: IfNotPresent # 拉取镜像策略：优先使用本地，本地没有才拉取镜像 ports: # rabbitmq容器暴露的端口 - name: epmd protocol: TCP containerPort: 4369 - name: amqp protocol: TCP containerPort: 5672 - name: http protocol: TCP containerPort: 15672 livenessProbe: # 心跳检测 exec: command: - /bin/sh - -c - 'wget -O - -q --header "Authorization: Basic `echo -n \"$RABBIT_MANAGEMENT_USER:$RABBIT_MANAGEMENT_PASSWORD\" | base64`" http://localhost:15672/api/healthchecks/node | grep -qF "{\"status\":\"ok\"}"' failureThreshold: 6 initialDelaySeconds: 120 periodSeconds: 10 timeoutSeconds: 5 readinessProbe: # 探针 exec: command: - /bin/sh - -c - 'wget -O - -q --header "Authorization: Basic `echo -n \"$RABBIT_MANAGEMENT_USER:$RABBIT_MANAGEMENT_PASSWORD\" | base64`" http://localhost:15672/api/healthchecks/node | grep -qF "{\"status\":\"ok\"}"' failureThreshold: 6 initialDelaySeconds: 20 periodSeconds: 5 timeoutSeconds: 3 env: # rabbitmq容器的环境变量 - name: MY_POD_NAME valueFrom: fieldRef: apiVersion: v1 fieldPath: metadata.name - name: RABBITMQ_USE_LONGNAME value: "true" - name: RABBITMQ_NODENAME value: rabbit@$(MY_POD_NAME).rabbitmq-rabbitmq-ha-discovery.rabbitmq-cluster.svc.cluster.local - name: K8S_HOSTNAME_SUFFIX value: .rabbitmq-rabbitmq-ha-discovery.rabbitmq-cluster.svc.cluster.local - name: K8S_SERVICE_NAME value: rabbitmq-rabbitmq-ha-discovery - name: RABBITMQ_ERLANG_COOKIE valueFrom: # 关联 Secret 的值 secretKeyRef: name: rabbitmq-rabbitmq-ha key: rabbitmq-erlang-cookie - name: RABBIT_MANAGEMENT_USER valueFrom: secretKeyRef: name: rabbitmq-rabbitmq-ha key: rabbitmq-management-username - name: RABBIT_MANAGEMENT_PASSWORD valueFrom: secretKeyRef: name: rabbitmq-rabbitmq-ha key: rabbitmq-management-password volumeMounts: # 挂载卷 mountPath: 容器内部路径 - name: data mountPath: /var/lib/rabbitmq - name: config mountPath: /etc/rabbitmq - name: definitions mountPath: /etc/definitions readOnly: true affinity: # 亲和性 podAntiAffinity: preferredDuringSchedulingIgnoredDuringExecution: - weight: 1 podAffinityTerm: topologyKey: "kubernetes.io/hostname" labelSelector: matchLabels: app: rabbitmq-ha release: rabbitmq volumes: - name: config emptyDir: {} - name: configmap configMap: name: rabbitmq-rabbitmq-ha - name: definitions secret: secretName: rabbitmq-rabbitmq-ha items: - key: definitions.json path: definitions.json - name: data emptyDir: {} --- # Source: rabbitmq-ha/templates/ingress.yaml apiVersion: extensions/v1beta1 kind: Ingress metadata: name: rabbitmq-rabbitmq-ha namespace: rabbitmq-cluster labels: app: rabbitmq-ha annotations: spec: rules: - host: rabbitmq.akiraka.net http: paths: - path: / backend: serviceName: rabbitmq-rabbitmq-ha servicePort: 15672 |
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