kafka stateful java.net.NoRouteToHostException: No route to host

[eskuai]

Kafka pods cannot connecto to zookeeper. They always show

java.net.NoRouteToHostException: No route to host

I 've tried with various connection url config:

    - "exec kafka-server-start.sh /opt/kafka/config/server.properties --override broker.id=${HOSTNAME##*-} \
    --override zookeeper.connect=zk-0.zk-hs.default.svc.cluster.local:2181,zk-1.zk-hs.default.svc.cluster.local:2181,zk-2.zk-hs.default.svc.cluster.local:2181 \                    
      --override zookeeper.connection.timeout.ms=60000 \

Neither use --override zookeeper.connect=zk-c.default.svc.cluster.local:2181, nor --override zookeeper.connect=zk-hs.default.svc.cluster.local:2181,

Kubenetes 1.13.3 k8s_coredns_coredn

Attached stateful

apiVersion: apps/v1beta1 kind: StatefulSet metadata: name: kafka spec: serviceName: kafka-hs replicas: 1 podManagementPolicy: Parallel updateStrategy: type: RollingUpdate template: metadata: labels: app: kafka spec: affinity: podAntiAffinity: requiredDuringSchedulingIgnoredDuringExecution:

• labelSelector: matchExpressions:
  • key: "app" operator: In values:
    • kafka topologyKey: "kubernetes.io/hostname" podAffinity: preferredDuringSchedulingIgnoredDuringExecution:
      • weight: 1 podAffinityTerm: labelSelector: matchExpressions:
        • key: "app" operator: In values:
          • zk topologyKey: "kubernetes.io/hostname" terminationGracePeriodSeconds: 600 containers:
            • name: k8skafka imagePullPolicy: Always image: gcr.io/google_containers/kubernetes-kafka:1.0-10.2.1 resources: requests: memory: "1Gi" cpu: "0.5" ports:
            • containerPort: 9093 name: server command:
            • sh
            • -c
            • "exec kafka-server-start.sh /opt/kafka/config/server.properties --override broker.id=${HOSTNAME##*-} \ --override listeners=PLAINTEXT://:9093 \
              --override zookeeper.connect=zk-0.zk-hs.default.svc.cluster.local:2181,zk-1.zk-hs.default.svc.cluster.local:2181,zk-2.zk-hs.default.svc.cluster.local:2181 \
              --override zookeeper.connection.timeout.ms=60000 \ --override log.dir=/var/lib/kafka \ --override auto.create.topics.enable=true \ --override auto.leader.rebalance.enable=true \ --override background.threads=10 \ --override compression.type=producer \ --override delete.topic.enable=false \ --override leader.imbalance.check.interval.seconds=300 \ --override leader.imbalance.per.broker.percentage=10 \ --override log.flush.interval.messages=9223372036854775807 \ --override log.flush.offset.checkpoint.interval.ms=60000 \ --override log.flush.scheduler.interval.ms=9223372036854775807 \ --override log.retention.bytes=-1 \ --override log.retention.hours=168 \ --override log.roll.hours=168 \ --override log.roll.jitter.hours=0 \ --override log.segment.bytes=1073741824 \ --override log.segment.delete.delay.ms=60000 \ --override message.max.bytes=1000012 \ --override min.insync.replicas=1 \ --override num.io.threads=8 \ --override num.network.threads=3 \ --override num.recovery.threads.per.data.dir=1 \ --override num.replica.fetchers=1 \ --override offset.metadata.max.bytes=4096 \ --override offsets.commit.required.acks=-1 \ --override offsets.commit.timeout.ms=5000 \ --override offsets.load.buffer.size=5242880 \ --override offsets.retention.check.interval.ms=600000 \ --override offsets.retention.minutes=1440 \ --override offsets.topic.compression.codec=0 \ --override offsets.topic.num.partitions=50 \ --override offsets.topic.replication.factor=3 \ --override offsets.topic.segment.bytes=104857600 \ --override queued.max.requests=500 \ --override quota.consumer.default=9223372036854775807 \ --override quota.producer.default=9223372036854775807 \ --override replica.fetch.min.bytes=1 \ --override replica.fetch.wait.max.ms=500 \ --override replica.high.watermark.checkpoint.interval.ms=5000 \ --override replica.lag.time.max.ms=10000 \ --override replica.socket.receive.buffer.bytes=65536 \ --override replica.socket.timeout.ms=30000 \ --override request.timeout.ms=30000 \ --override socket.receive.buffer.bytes=102400 \ --override socket.request.max.bytes=104857600 \ --override socket.send.buffer.bytes=102400 \ --override unclean.leader.election.enable=true \ --override zookeeper.session.timeout.ms=60000 \ --override zookeeper.set.acl=false \ --override broker.id.generation.enable=true \ --override connections.max.idle.ms=600000 \ --override controlled.shutdown.enable=true \ --override controlled.shutdown.max.retries=3 \ --override controlled.shutdown.retry.backoff.ms=5000 \ --override controller.socket.timeout.ms=30000 \ --override default.replication.factor=1 \ --override fetch.purgatory.purge.interval.requests=1000 \ --override group.max.session.timeout.ms=300000 \ --override group.min.session.timeout.ms=60000 \ --override inter.broker.protocol.version=0.10.2-IV0 \ --override log.cleaner.backoff.ms=15000 \ --override log.cleaner.dedupe.buffer.size=134217728 \ --override log.cleaner.delete.retention.ms=86400000 \ --override log.cleaner.enable=true \ --override log.cleaner.io.buffer.load.factor=0.9 \ --override log.cleaner.io.buffer.size=524288 \ --override log.cleaner.io.max.bytes.per.second=1.7976931348623157E308 \ --override log.cleaner.min.cleanable.ratio=0.5 \ --override log.cleaner.min.compaction.lag.ms=0 \ --override log.cleaner.threads=1 \ --override log.cleanup.policy=delete \ --override log.index.interval.bytes=4096 \ --override log.index.size.max.bytes=10485760 \ --override log.message.timestamp.difference.max.ms=9223372036854775807 \ --override log.message.timestamp.type=CreateTime \ --override log.preallocate=false \ --override log.retention.check.interval.ms=300000 \ --override max.connections.per.ip=2147483647 \ --override num.partitions=1 \ --override producer.purgatory.purge.interval.requests=1000 \ --override replica.fetch.backoff.ms=1000 \ --override replica.fetch.max.bytes=1048576 \ --override replica.fetch.response.max.bytes=10485760 \ --override reserved.broker.max.id=1000 " env:
            • name: KAFKA_HEAP_OPTS value : "-Xmx512M -Xms512M"
            • name: KAFKA_OPTS value: "-Dlogging.level=DEBUG" volumeMounts:
            • name: kafka-pv-volume mountPath: /var/lib/kafka readinessProbe: exec: command:
• sh
• -c
• "/opt/kafka/bin/kafka-broker-api-versions.sh --bootstrap-server=localhost:9093" volumeClaimTemplates:
  • metadata: name: kafka-pv-volume spec: accessModes: [ "ReadWriteOnce" ] resources: requests: storage: 10Gi

Help!