elasticsearch 无效的HTTP主机：Kafka ElasticSearch接收器连接器

我正在尝试使用elasticsearch作为我的应用程序的数据库，中间使用kafka connect。KafkaConnect、elasticsearch（版本7）和我的应用程序都在同一网络中的容器中运行。当我尝试从容器中访问kafkaconnect的elasticsearch时，它是成功的。但我的连接器不断向我抛出以下错误，我似乎无法找出确切的问题：

错误：

container_standalone    | java.lang.IllegalArgumentException: Invalid HTTP host: elasticsearch:9200/
container_standalone    |   at org.apache.http.HttpHost.create(HttpHost.java:123)
container_standalone    |   at io.confluent.connect.elasticsearch.jest.JestElasticsearchClient.lambda$getClientConfig$0(JestElasticsearchClient.java:201)
container_standalone    |   at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
container_standalone    |   at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
container_standalone    |   at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
container_standalone    |   at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
container_standalone    |   at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
container_standalone    |   at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
container_standalone    |   at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
container_standalone    |   at io.confluent.connect.elasticsearch.jest.JestElasticsearchClient.getClientConfig(JestElasticsearchClient.java:201)
container_standalone    |   at io.confluent.connect.elasticsearch.jest.JestElasticsearchClient.<init>(JestElasticsearchClient.java:149)
container_standalone    |   at io.confluent.connect.elasticsearch.jest.JestElasticsearchClient.<init>(JestElasticsearchClient.java:142)
container_standalone    |   at io.confluent.connect.elasticsearch.ElasticsearchSinkTask.start(ElasticsearchSinkTask.java:122)
container_standalone    |   at io.confluent.connect.elasticsearch.ElasticsearchSinkTask.start(ElasticsearchSinkTask.java:51)
container_standalone    |   at org.apache.kafka.connect.runtime.WorkerSinkTask.initializeAndStart(WorkerSinkTask.java:300)
container_standalone    |   at org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:189)
container_standalone    |   at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:177)
container_standalone    |   at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:227)
container_standalone    |   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
container_standalone    |   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
container_standalone    |   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
container_standalone    |   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
container_standalone    |   at java.lang.Thread.run(Thread.java:748)
container_standalone    | [2020-09-23 09:47:09,366] ERROR WorkerSinkTask{id=elasticsearch-sink-0} Task is being killed and will not recover until manually restarted (org.apache.kafka.connect.runtime.WorkerTask:180)

Elastic.yml文件：

cluster.name: "docker-cluster"
network.host: 0.0.0.0
xpack.license.self_generated.type: trial
xpack.security.enabled: false
xpack.monitoring.collection.enabled: true

---

您是否能够

ping elasticsearch

？似乎是DNS错误，而不是Kafka connect。你能展示一下你的Docker命令吗？我试过运行

Docker exec container\u-sShttp://elasticsearch:9200/

当我尝试连接到elastic search时，它为我提供了预期的正确结果。

cluster.name: "docker-cluster"
network.host: 0.0.0.0
xpack.license.self_generated.type: trial
xpack.security.enabled: false
xpack.monitoring.collection.enabled: true