{"id":46670,"date":"2023-02-19T05:17:31","date_gmt":"2023-09-13T13:26:04","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/46670-2\/"},"modified":"2024-04-29T15:15:18","modified_gmt":"2024-04-29T07:15:18","slug":"46670-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/46670-2\/","title":{"rendered":""},"content":{"rendered":"<p>\u3053\u3061\u3089\u3092\u53c2\u8003\u306b\u3057\u306a\u304c\u3089Kafka consumer\u3092\u4f5c\u3063\u3066\u5b9f\u884c\u3057\u305f\u3089\u3001<br \/>\njava.io.IOException: Can&#8217;t resolve address: fluentd01.example.com:9092\u3063\u3066\u8a00\u308f\u308c\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code>17:51:56.640 [main] DEBUG o.apache.kafka.clients.NetworkClient - No node found. Trying previously-seen node with ID 0\r\n17:51:56.640 [main] DEBUG o.apache.kafka.clients.NetworkClient - Give up sending metadata request since no node is available\r\n17:51:56.740 [main] DEBUG o.apache.kafka.clients.NetworkClient - Initialize connection to node 0 for sending metadata request\r\n17:51:56.740 [main] DEBUG o.apache.kafka.clients.NetworkClient - Initiating connection to node 0 at fluentd01.example.com:9092.\r\n17:51:56.742 [main] DEBUG o.apache.kafka.clients.NetworkClient - Error connecting to node 0 at fluentd01.example.com:9092:\r\njava.io.IOException: Can't resolve address: fluentd01.example.com:9092\r\n    at org.apache.kafka.common.network.Selector.connect(Selector.java:156) ~[kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:514) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.NetworkClient.access$600(NetworkClient.java:49) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:672) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:568) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:268) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:303) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:197) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:187) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:126) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorKnown(AbstractCoordinator.java:186) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:857) [kafka-clients-0.9.0.0.jar:na]\r\n    at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:829) [kafka-clients-0.9.0.0.jar:na]\r\n    at poc.AtMostOnceConsumer.processRecords(AtMostOnceConsumer.java:95) [classes\/:na]\r\n    at poc.AtMostOnceConsumer.execute(AtMostOnceConsumer.java:62) [classes\/:na]\r\n    at poc.AtMostOnceConsumer.main(AtMostOnceConsumer.java:50) [classes\/:na]\r\nCaused by: java.nio.channels.UnresolvedAddressException: null\r\n    at sun.nio.ch.Net.checkAddress(Net.java:101) ~[na:1.8.0_101]\r\n    at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622) ~[na:1.8.0_101]\r\n    at org.apache.kafka.common.network.Selector.connect(Selector.java:153) ~[kafka-clients-0.9.0.0.jar:na]\r\n    ... 15 common frames omitted\r\n<\/code><\/pre>\n<p>\u300cfluentd01.example.com\u300d\u306a\u3093\u3066\u30bd\u30fc\u30b9\u306e\u3069\u3053\u306b\u3082\u66f8\u3044\u3066\u306d\u30fc\u305e&#8230;\u3068\u304b\u601d\u3063\u305f\u304c\u3001\/etc\/hosts \u306b\u66f8\u3044\u3066\u3042\u3063\u305f\u3002<br \/>\n\u306a\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u3068\u304a\u308aadvertised.listeners\u3067\u8a2d\u5b9a\u3057\u3066\u3042\u3052\u308b\u3068\u3001<br \/>\n\u3046\u307e\u3044\u3053\u3068Broker\u304b\u3089\u30c8\u30d4\u30c3\u30af\u3092\u53d6\u5f97\u3067\u304d\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># Hostname and port the broker will advertise to producers and consumers. If not set,\r\n# it uses the value for \"listeners\" if configured.  Otherwise, it will use the value\r\n# returned from java.net.InetAddress.getCanonicalHostName().\r\n#advertised.listeners=PLAINTEXT:\/\/your.host.name:9092\r\n<\/span><span class=\"py\">advertised.listeners<\/span><span class=\"p\">=<\/span><span class=\"s\">PLAINTEXT:\/\/[\u30b5\u30fc\u30d0\u30fc\u306eIP]:9092<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3061\u3089\u3092\u53c2\u8003\u306b\u3057\u306a\u304c\u3089Kafka consumer\u3092\u4f5c\u3063\u3066\u5b9f\u884c\u3057\u305f\u3089\u3001 java.io.IOException [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-46670","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - 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