Cassandra 无法在 AKS 中运行，并收到“检测到不可读的 sstables”

Question

我无法在azure kuberenetes服务中运行cassandra，我已经制作了服务文件和statefulset yaml文件，如下所示：

(base) bert:~$ kubectl get service cassandra -o yaml
apiVersion: v1
kind: Service
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"cassandra"},"name":"cassandra","namespace":"default"},"spec":{"clusterIP":"None","ports":[{"port":9042}],"selector":{"app":"cassandra"}}}
  creationTimestamp: "2024-08-30T11:09:05Z"
  labels:
    app: cassandra
  name: cassandra
  namespace: default
  resourceVersion: "13709044"
  uid: 9dc2efa0-6741-4dad-9ab0-904ab51c225a
spec:
  clusterIP: None
  clusterIPs:
  - None
  internalTrafficPolicy: Cluster
  ipFamilies:
  - IPv4
  ipFamilyPolicy: SingleStack
  ports:
  - port: 9042
    protocol: TCP
    targetPort: 9042
  selector:
    app: cassandra
  sessionAffinity: None
  type: ClusterIP
status:
  loadBalancer: {}

和

(base) bert:~$ kubectl get statefulset cassandra -n default -o yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"apps/v1","kind":"StatefulSet","metadata":{"annotations":{},"labels":{"app":"cassandra"},"name":"cassandra","namespace":"default"},"spec":{"replicas":1,"selector":{"matchLabels":{"app":"cassandra"}},"serviceName":"cassandra","template":{"metadata":{"labels":{"app":"cassandra"}},"spec":{"containers":[{"env":[{"name":"MAX_HEAP_SIZE","value":"512M"},{"name":"HEAP_NEWSIZE","value":"100M"},{"name":"CASSANDRA_SEEDS","value":"cassandra-0.cassandra.default.svc.cluster.local"},{"name":"CASSANDRA_CLUSTER_NAME","value":"K8Demo"},{"name":"CASSANDRA_DC","value":"DC1-K8Demo"},{"name":"CASSANDRA_RACK","value":"Rack1-K8Demo"},{"name":"POD_IP","valueFrom":{"fieldRef":{"fieldPath":"status.podIP"}}}],"image":"gcr.io/google-samples/cassandra:v13","imagePullPolicy":"Always","lifecycle":{"preStop":{"exec":{"command":["/bin/sh","-c","nodetool drain"]}}},"name":"cassandra","ports":[{"containerPort":7000,"name":"intra-node"},{"containerPort":7001,"name":"tls-intra-node"},{"containerPort":7199,"name":"jmx"},{"containerPort":9042,"name":"cql"}],"readinessProbe":{"exec":{"command":["/bin/bash","-c","/ready-probe.sh"]},"initialDelaySeconds":15,"timeoutSeconds":5},"resources":{"limits":{"cpu":"2000m","memory":"4Gi"},"requests":{"cpu":"1000m","memory":"2Gi"}},"securityContext":{"capabilities":{"add":["IPC_LOCK"]}},"volumeMounts":[{"mountPath":"/cassandra_data","name":"cassandra-data"}]}],"terminationGracePeriodSeconds":500}},"volumeClaimTemplates":[{"metadata":{"name":"cassandra-data"},"spec":{"accessModes":["ReadWriteOnce"],"resources":{"requests":{"storage":"10Gi"}},"storageClassName":"fast"}}]}}
  creationTimestamp: "2024-08-30T12:22:25Z"
  generation: 1
  labels:
    app: cassandra
  name: cassandra
  namespace: default
  resourceVersion: "13729005"
  uid: fbc72546-b52e-4654-a0f9-0d09fff8c89c
spec:
  persistentVolumeClaimRetentionPolicy:
    whenDeleted: Retain
    whenScaled: Retain
  podManagementPolicy: OrderedReady
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: cassandra
  serviceName: cassandra
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: cassandra
    spec:
      containers:
      - env:
        - name: MAX_HEAP_SIZE
          value: 512M
        - name: HEAP_NEWSIZE
          value: 100M
        - name: CASSANDRA_SEEDS
          value: cassandra-0.cassandra.default.svc.cluster.local
        - name: CASSANDRA_CLUSTER_NAME
          value: K8Demo
        - name: CASSANDRA_DC
          value: DC1-K8Demo
        - name: CASSANDRA_RACK
          value: Rack1-K8Demo
        - name: POD_IP
          valueFrom:
            fieldRef:
              apiVersion: v1
              fieldPath: status.podIP
        image: gcr.io/google-samples/cassandra:v13
        imagePullPolicy: Always
        lifecycle:
          preStop:
            exec:
              command:
              - /bin/sh
              - -c
              - nodetool drain
        name: cassandra
        ports:
        - containerPort: 7000
          name: intra-node
          protocol: TCP
        - containerPort: 7001
          name: tls-intra-node
          protocol: TCP
        - containerPort: 7199
          name: jmx
          protocol: TCP
        - containerPort: 9042
          name: cql
          protocol: TCP
        readinessProbe:
          exec:
            command:
            - /bin/bash
            - -c
            - /ready-probe.sh
          failureThreshold: 3
          initialDelaySeconds: 15
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 5
        resources:
          limits:
            cpu: "2"
            memory: 4Gi
          requests:
            cpu: "1"
            memory: 2Gi
        securityContext:
          capabilities:
            add:
            - IPC_LOCK
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /cassandra_data
          name: cassandra-data
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 500
  updateStrategy:
    rollingUpdate:
      partition: 0
    type: RollingUpdate
  volumeClaimTemplates:
  - apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      creationTimestamp: null
      name: cassandra-data
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: 10Gi
      storageClassName: fast
      volumeMode: Filesystem
    status:
      phase: Pending
status:
  availableReplicas: 0
  collisionCount: 0
  currentReplicas: 1
  currentRevision: cassandra-5ff88569c
  observedGeneration: 1
  replicas: 1
  updateRevision: cassandra-5ff88569c
  updatedReplicas: 1

这是我的资源监视器：附加为图像

我的 cassandra-0 pod 进入 crashloopbackoff： 这是 cassandra 日志错误： 检测到不可读的 sstables

我想在集群的节点池上运行 cassandra，并且我正在寻找解决方案，为什么会发生这种情况。

Answer 1

您的问题中没有足够的相关信息，但您描述的问题表明磁盘上存在与 pod 上安装的 Cassandra 二进制文件不兼容的 SSTable。

当 Cassandra 进程在启动过程中检测到数据目录中至少有 1 个文件格式不兼容时，会抛出错误

Detected unreadable sstables

。这表明安装的

data/

卷不为空，并且包含以前安装的 Cassandra 中的文件。

附带说明，您需要在问题中提供更多详细信息。您需要添加的主要内容是 (1) 完整的错误消息加上 (2) 完整的堆栈跟踪，以及 (3) Cassandra 版本。

友情提醒，提问时应提供足够的信息，以便贡献者更容易为您提供帮助。如果您需要指导，请参阅 stackoverflow.com/help/how-to-ask。针对与 Cassandra 相关的问题，我在 Apache Cassandra 网站上发布了提出好问题。干杯！