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Kafka 弹性搜索连接器“confluentinc-kafka-connect-elasticsearch-5.5.0”在本地无法正常工作。

"java.lang.NoClassDefFoundError: com/google/common/collect/ImmutableSet\n\tat io.searchbox.client.AbstractJestClient.<init>(AbstractJestClient.java:38)\n\tat io.searchbox.client.http.JestHttpClient.<init>(JestHttpClient.java:43)\n\tat io.searchbox.client.JestClientFactory.getObject(JestClientFactory.java:51)\n\tat io.confluent.connect.elasticsearch.jest.JestElasticsearchClient.<init>(JestElasticsearchClient.java:149)\n\tat io.confluent.connect.elasticsearch.jest.JestElasticsearchClient.<init>(JestElasticsearchClient.java:141)\n\tat io.confluent.connect.elasticsearch.ElasticsearchSinkTask.start(ElasticsearchSinkTask.java:122)\n\tat io.confluent.connect.elasticsearch.ElasticsearchSinkTask.start(ElasticsearchSinkTask.java:51)\n\tat org.apache.kafka.connect.runtime.WorkerSinkTask.initializeAndStart(WorkerSinkTask.java:305)\n\tat org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:193)\n\tat org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:184)\n\tat org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:234)\n\tat java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)\n\tat java.util.concurrent.FutureTask.run(FutureTask.java:266)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\n"

我还在同一路径中使用 mssql 连接器和 s3 连接器插件；它们可以工作，但 elasticsearch 插件给出 noclassfound 错误。这是我在worker中的文件夹结构：

[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ ls
confluentinc-kafka-connect-elasticsearch-5.5.0  confluentinc-kafka-connect-s3-5.5.0  debezium-connector-sqlserver  kafka-connect-shell-sink-5.1.0
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ ls -l
total 16
drwxrwxr-x 2 root root 4096 May 25 22:15 confluentinc-kafka-connect-elasticsearch-5.5.0
drwxrwxr-x 5 root root 4096 May 15 02:26 confluentinc-kafka-connect-s3-5.5.0
drwxrwxr-x 2 root root 4096 May 15 02:26 debezium-connector-sqlserver
drwxrwxr-x 4 root root 4096 May 15 02:26 kafka-connect-shell-sink-5.1.0
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ ls debezium-connector-sqlserver
debezium-api-1.1.1.Final.jar  debezium-connector-sqlserver-1.1.1.Final.jar  debezium-core-1.1.1.Final.jar  mssql-jdbc-7.2.2.jre8.jar
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ ls confluentinc-kafka-connect-s3-5.5.0
assets  etc  lib  manifest.json
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ ls confluentinc-kafka-connect-elasticsearch-5.5.0 -l
total 8356
-rw-r--r-- 1 root root   17558 May 25 11:53 common-utils-5.5.0.jar
-rw-r--r-- 1 root root  263965 May 25 11:53 commons-codec-1.9.jar
-rw-r--r-- 1 root root   61829 May 25 11:53 commons-logging-1.2.jar
-rw-r--r-- 1 root root   79845 May 25 19:34 compress-lzf-1.0.3.jar
-rw-r--r-- 1 root root  241622 May 25 11:53 gson-2.8.5.jar
-rw-r--r-- 1 root root 2329410 May 25 19:34 guava-18.0.jar
-rw-r--r-- 1 root root 1140290 May 25 19:34 hppc-0.7.1.jar
-rw-r--r-- 1 root root  179335 May 25 11:53 httpasyncclient-4.1.3.jar
-rw-r--r-- 1 root root  747794 May 25 11:53 httpclient-4.5.3.jar
-rw-r--r-- 1 root root  323824 May 25 11:53 httpcore-4.4.6.jar
-rw-r--r-- 1 root root  356644 May 25 11:53 httpcore-nio-4.4.6.jar
-rw-r--r-- 1 root root  280996 May 25 19:34 jackson-core-2.8.2.jar
-rw-r--r-- 1 root root   22191 May 25 11:53 jest-6.3.1.jar
-rw-r--r-- 1 root root  276130 May 25 11:53 jest-common-6.3.1.jar
-rw-r--r-- 1 root root  621992 May 25 19:34 joda-time-2.8.2.jar
-rw-r--r-- 1 root root   62226 May 25 19:34 jsr166e-1.1.0.jar
-rw-r--r-- 1 root root   83179 May 25 11:53 kafka-connect-elasticsearch-5.5.0.jar
-rw-r--r-- 1 root root 1330394 May 25 19:34 netty-3.10.5.Final.jar
-rw-r--r-- 1 root root   41139 May 25 11:53 slf4j-api-1.7.26.jar
-rw-r--r-- 1 root root   49754 May 25 19:34 t-digest-3.0.jar
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$

我已经阅读了一些消息，其中缺少弹性搜索连接器中的 jar 文件/依赖项，我添加了它们，如您在上面看到的，但没有运气。

这是我的连接器配置：

apiVersion: kafka.strimzi.io/v1alpha1
kind: KafkaConnector
metadata:
  name: "elastic-files-connector"
  labels:
    strimzi.io/cluster: mssql-minio-connect-cluster
spec:
  class: io.confluent.connect.elasticsearch.ElasticsearchSinkConnector
  config:
    connection.url: "https://escluster-es-http.dev-kik.io:9200"
    connection.username: "${file:/opt/kafka/external-configuration/elasticcreds/connector.properties:connection.username}"
    connection.password: "${file:/opt/kafka/external-configuration/elasticcreds/connector.properties:connection.password}"
    flush.timeout.ms: 10000
    max.buffered.events: 20000
    batch.size: 2000
    topics: filesql1.dbo.Files
    tasks.max: '1'
    type.name: "_doc"
    max.request.size: "536870912"
    key.converter: io.confluent.connect.avro.AvroConverter
    key.converter.schema.registry.url: http://schema-registry-cp-schema-registry:8081
    value.converter: io.confluent.connect.avro.AvroConverter
    value.converter.schema.registry.url: http://schema-registry-cp-schema-registry:8081
    internal.key.converter: org.apache.kafka.connect.json.JsonConverter
    internal.value.converter: org.apache.kafka.connect.json.JsonConverter
    key.converter.schemas.enable: true
    value.converter.schemas.enable: true
    schema.compatibility: NONE    
    errors.tolerance: all
    errors.deadletterqueue.topic.name: "dlq_filesql1.dbo.Files"
    errors.deadletterqueue.context.headers.enable: "true"
    errors.log.enable: "true"
    behavior.on.null.values: "ignore"
    errors.retry.delay.max.ms: 60000
    errors.retry.timeout: 300000
    behavior.on.malformed.documents: warn

我将用户名/密码更改为明文；没运气。我尝试了两个 http/https 的弹性搜索连接，没有运气。

这是我的弹性搜索 srv 信息：

devadmin@vdi-mk2-ubn:~/kafka$ kubectl get svc -n elastic-system
NAME                     TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)          AGE
elastic-webhook-server   ClusterIP      10.104.95.105   <none>           443/TCP          21h
escluster-es-default     ClusterIP      None            <none>           <none>           8h
escluster-es-http        LoadBalancer   10.108.69.136   192.168.215.35   9200:31214/TCP   8h
escluster-es-transport   ClusterIP      None            <none>           9300/TCP         8h
kibana-kb-http           LoadBalancer   10.102.81.206   192.168.215.34   5601:31315/TCP   20h
devadmin@vdi-mk2-ubn:~/kafka$

我可以通过两种方式从 Kafka Connect Worker 连接到弹性搜索服务：

[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ curl -u "elastic:5NM0Pp25sFzNu578873BWFnN" -k "https://10.108.69.136:9200"
{
  "name" : "escluster-es-default-0",
  "cluster_name" : "escluster",
  "cluster_uuid" : "TP5f4MGcSn6Dt9hZ144tEw",
  "version" : {
    "number" : "7.7.0",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "81a1e9eda8e6183f5237786246f6dced26a10eaf",
    "build_date" : "2020-05-12T02:01:37.602180Z",
    "build_snapshot" : false,
    "lucene_version" : "8.5.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$ curl -u "elastic:5NM0Pp25sFzNu578873BWFnN" -k "https://escluster-es-http.dev-kik.io:9200"
{
  "name" : "escluster-es-default-0",
  "cluster_name" : "escluster",
  "cluster_uuid" : "TP5f4MGcSn6Dt9hZ144tEw",
  "version" : {
    "number" : "7.7.0",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "81a1e9eda8e6183f5237786246f6dced26a10eaf",
    "build_date" : "2020-05-12T02:01:37.602180Z",
    "build_snapshot" : false,
    "lucene_version" : "8.5.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}
[kafka@mssql-minio-connect-cluster-connect-d9859784f-ffj8r plugins]$

无论我做什么，异常都不会改变。我不知道还有什么可以尝试的。我的大脑在燃烧，我快要疯了。

我是否遗漏了什么，或者您能否建议你们如何在 Kubernetes 上运行此连接器？

感谢和问候

4

1 回答 1

5

我正在使用kafka_2. 12-2.5.0，我遇到了同样的问题。我注意到 $KAFKA_HOME/libs 中缺少关于 Kafka 的番石榴罐2. 4.0。作为一种解决方法，我guava-20.0. jar从以前的 Kafka 发行版中手动复制了 jar ( )，一切正常。

于 2020-05-26T22:43:21.570 回答