apache-kafka - Kafka的日志目录应仅包含Kafka主题数据

Question

我正在尝试在kubernetes环境和面对中运行融合的kafka图像

FATAL [KafkaServer id=0] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.common.KafkaException: Found directory /var/lib/kafka/data, 'data' is not in the form of topic-partition or topic-partition.uniqueId-delete (if marked for deletion).
Kafka's log directories (and children) should only contain Kafka topic data.

我的部署配置:

apiVersion: apps/v1beta2 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: kafka-confluent
  labels:
    app: kafka-confluent
spec:
  replicas: 1
  selector:
    matchLabels:
      app: kafka-confluent
  template:
    metadata:
      labels:
        app: kafka-confluent
    spec:
      containers:
      - name: zookeeper-kafka
        image: zookeeper:3.5
        ports:
        - containerPort: 2181
      - name: kafka-confluent
        image: confluentinc/cp-kafka:4.0.0
        ports:
        - containerPort: 9092
        command:
        - sh
        - -c
        - "exec kafka-server-start /etc/kafka/server.properties \
          --override reserved.broker.max.id=2147483647 \
          --override zookeeper.connect=localhost:2181 \
          --override listeners=PLAINTEXT://:9092 \
          "

为了解决这个问题，我尝试安装一些临时卷，如下所示。

volumes:
- name: kafka-data
  emptyDir: {}
...
volumeMounts:
- mountPath: /var/lib/kafka/data
  name: kafka-data

并使用初始化容器清除 data目录:

containers:
- name: cleaner
  image: busybox
  command: ['rm', '-rf', '/var/lib/kafka/data/*']

两次尝试均失败，结果相同。

另外，如果我运行图像并列出数据 /var/lib/kafka/data/看起来目录是空的。

docker run --rm -it confluentinc/cp-kafka:4.0.0 bash
root@35087653f43a:/# ls /var/lib/kafka/data/ -al
total 8
drwxrwxrwx 2 root root 4096 Apr 16 09:59 .
drwxr-xr-x 3 root root 4096 Jan  3 19:20 ..

Answer 1

我有这个工作配置:

volumeMounts:
        - name: data
          mountPath: /var/lib/kafka

并在命令中覆盖 log.dirs

kafka-server-start /etc/kafka/server.properties \
    --override log.dirs=/var/lib/kafka