我通过Confluent平台运行Kafka。我按照上面提到的步骤，java.net.BindException：已经在使用的地址
根据此处的文档，https://docs.confluent.io/2.0.0/quickstart.html#quickstart
启动zookeeper，
$ ./bin/zookeeper-server-start ./etc/kafka/zookeeper.properties
启动kafka，
$ ./bin/kafka-server-start ./etc/kafka/server.properties
接下来当我运行schema-registry命令时，
$ ./bin/schema-registry-start ./etc/schema-registry/schema-registry.properties
我发现错误为java.net.BindException: Address already in use
我在macbook中本地运行所有这些。 somoene请帮助我解决这个address already in use错误？
控制台日志：
EFGHS-MER648W:confluent-4.0.0 user$ sudo ./bin/schema-registry-start ./etc/schema-registry/schema-registry.properties
Password:
[2018-01-09 13:09:03,510] INFO SchemaRegistryConfig values:
metric.reporters = []
kafkastore.sasl.kerberos.kinit.cmd = /usr/bin/kinit
response.mediatype.default = application/vnd.schemaregistry.v1+json
kafkastore.ssl.trustmanager.algorithm = PKIX
authentication.realm =
ssl.keystore.type = JKS
kafkastore.topic = _schemas
metrics.jmx.prefix = kafka.schema.registry
kafkastore.ssl.enabled.protocols = TLSv1.2,TLSv1.1,TLSv1
kafkastore.topic.replication.factor = 3
ssl.truststore.password = [hidden]
kafkastore.timeout.ms = 500
host.name = 192.168.0.13
kafkastore.bootstrap.servers = []
schema.registry.zk.namespace = schema_registry
kafkastore.sasl.kerberos.ticket.renew.window.factor = 0.8
kafkastore.sasl.kerberos.service.name =
schema.registry.resource.extension.class =
ssl.endpoint.identification.algorithm =
compression.enable = false
kafkastore.ssl.truststore.type = JKS
avro.compatibility.level = backward
kafkastore.ssl.protocol = TLS
kafkastore.ssl.provider =
kafkastore.ssl.truststore.location =
response.mediatype.preferred = [application/vnd.schemaregistry.v1+json, application/vnd.schemaregistry+json, application/json]
kafkastore.ssl.keystore.type = JKS
ssl.truststore.type = JKS
kafkastore.ssl.truststore.password = [hidden]
access.control.allow.origin =
ssl.truststore.location =
ssl.keystore.password = [hidden]
port = 8081
kafkastore.ssl.keystore.location =
master.eligibility = true
ssl.client.auth = false
kafkastore.ssl.keystore.password = [hidden]
kafkastore.security.protocol = PLAINTEXT
ssl.trustmanager.algorithm =
authentication.method = NONE
request.logger.name = io.confluent.rest-utils.requests
ssl.key.password = [hidden]
kafkastore.zk.session.timeout.ms = 30000
kafkastore.sasl.mechanism = GSSAPI
kafkastore.sasl.kerberos.ticket.renew.jitter = 0.05
kafkastore.ssl.key.password = [hidden]
zookeeper.set.acl = false
schema.registry.inter.instance.protocol = http
authentication.roles = [*]
metrics.num.samples = 2
ssl.protocol = TLS
schema.registry.group.id = schema-registry
kafkastore.ssl.keymanager.algorithm = SunX509
kafkastore.connection.url = localhost:2181
debug = false
listeners = [http://0.0.0.0:8081]
kafkastore.group.id =
ssl.provider =
ssl.enabled.protocols = []
shutdown.graceful.ms = 1000
ssl.keystore.location =
ssl.cipher.suites = []
kafkastore.ssl.endpoint.identification.algorithm =
kafkastore.ssl.cipher.suites =
access.control.allow.methods =
kafkastore.sasl.kerberos.min.time.before.relogin = 60000
ssl.keymanager.algorithm =
metrics.sample.window.ms = 30000
kafkastore.init.timeout.ms = 60000
(io.confluent.kafka.schemaregistry.rest.SchemaRegistryConfig:175)
[2018-01-09 13:09:03,749] INFO Logging initialized @629ms (org.eclipse.jetty.util.log:186)
[2018-01-09 13:09:04,202] INFO Initializing KafkaStore with broker endpoints: PLAINTEXT://192.168.0.13:9092 (io.confluent.kafka.schemaregistry.storage.KafkaStore:103)
[2018-01-09 13:09:04,475] INFO Validating schemas topic _schemas (io.confluent.kafka.schemaregistry.storage.KafkaStore:228)
[2018-01-09 13:09:04,482] WARN The replication factor of the schema topic _schemas is less than the desired one of 3. If this is a production environment, it's crucial to add more brokers and increase the replication factor of the topic. (io.confluent.kafka.schemaregistry.storage.KafkaStore:242)
[2018-01-09 13:09:04,567] INFO Initialized last consumed offset to -1 (io.confluent.kafka.schemaregistry.storage.KafkaStoreReaderThread:138)
[2018-01-09 13:09:04,567] INFO [kafka-store-reader-thread-_schemas]: Starting (io.confluent.kafka.schemaregistry.storage.KafkaStoreReaderThread:72)
[2018-01-09 13:09:04,651] INFO Wait to catch up until the offset of the last message at 7 (io.confluent.kafka.schemaregistry.storage.KafkaStore:277)
[2018-01-09 13:09:04,675] INFO Joining schema registry with Zookeeper-based coordination (io.confluent.kafka.schemaregistry.storage.KafkaSchemaRegistry:210)
[2018-01-09 13:09:04,682] INFO Created schema registry namespace localhost:2181/schema_registry (io.confluent.kafka.schemaregistry.masterelector.zookeeper.ZookeeperMasterElector:161)
[2018-01-09 13:09:04,705] INFO Successfully elected the new master: {"host":"192.168.0.13","port":8081,"master_eligibility":true,"scheme":"http","version":1} (io.confluent.kafka.schemaregistry.masterelector.zookeeper.ZookeeperMasterElector:102)
[2018-01-09 13:09:04,715] INFO Wait to catch up until the offset of the last message at 8 (io.confluent.kafka.schemaregistry.storage.KafkaStore:277)
[2018-01-09 13:09:04,778] INFO Adding listener: http://0.0.0.0:8081 (io.confluent.rest.Application:182)
[2018-01-09 13:09:04,844] INFO jetty-9.2.22.v20170606 (org.eclipse.jetty.server.Server:327)
[2018-01-09 13:09:05,411] INFO HV000001: Hibernate Validator 5.1.3.Final (org.hibernate.validator.internal.util.Version:27)
[2018-01-09 13:09:05,547] INFO Started o.e.j.s.ServletContextHandler@54c62d71{/,null,AVAILABLE} (org.eclipse.jetty.server.handler.ContextHandler:744)
[2018-01-09 13:09:05,555] WARN FAILED NetworkTrafficServerConnector@4879dfad{HTTP/1.1}{0.0.0.0:8081}: java.net.BindException: Address already in use (org.eclipse.jetty.util.component.AbstractLifeCycle:212)
java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:321)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:366)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain.main(SchemaRegistryMain.java:44)
[2018-01-09 13:09:05,557] WARN FAILED io.confluent.rest.Application$1@388526fb: java.net.BindException: Address already in use (org.eclipse.jetty.util.component.AbstractLifeCycle:212)
java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:321)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:366)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain.main(SchemaRegistryMain.java:44)
[2018-01-09 13:09:05,558] ERROR Server died unexpectedly: (io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain:51)
java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:321)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:366)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain.main(SchemaRegistryMain.java:44)
O2771-C02K648W:confluent-4.0.0 user$
请帮助解决此错误。
谢谢，
当我运行命令时，ps aux | grep schema-registry
O2771-C02K648W:~ user$ ps aux | grep schema-registry
root 20888 0.1 1.5 4584980 255588 ?? S 6:14PM 1:05.15 /usr/bin/java -Xmx512M -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+DisableExplicitGC -Djava.awt.headless=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dschema-registry.log.dir=/Users/user/Downloads/confluent-4.0.0/bin/../logs -Dlog4j.configuration=file:/Users/user/Downloads/confluent-4.0.0/bin/../etc/schema-registry/log4j.properties -cp :/Users/user/Downloads/confluent-4.0.0/bin/../package-schema-registry/target/kafka-schema-registry-package-*-development/share/java/schema-registry/*:/Users/user/Downloads/confluent-4.0.0/bin/../share/java/confluent-common/*:/Users/user/Downloads/confluent-4.0.0/bin/../share/java/rest-utils/*:/Users/user/Downloads/confluent-4.0.0/bin/../share/java/schema-registry/* io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain ./etc/schema-registry/schema-registry.properties
root 20887 0.0 0.0 2456112 3452 ?? S 6:14PM 0:00.02 sudo ./bin/schema-registry-start ./etc/schema-registry/schema-registry.properties
user 25256 0.0 0.0 2432804 1984 s001 S+ 1:41PM 0:00.00 grep schema-registry
O2771-C02K648W:~ user$
答案 0 :(得分：2)
您可以尝试使用以下命令
找出正在使用port:8081的进程
对于OSX El Capitan和更新版（或者如果你的netstat不支持-p），请使用lsof
或Windows的任何其他命令和强制使用该进程杀死该进程 kill -9 {PID}
您还可以尝试将架构注册表默认端口更改为另一个未使用的端口。
答案 1 :(得分：1)
您可以使用以下命令首先找到进程ID
# lsof -n -i :{PORT} | grep LISTEN
您将获得类似这样的过程
java 7812 root 205u IPv6 60200 0t0 TCP *:webcache (LISTEN)
然后完全终止进程
# kill -9 7812
希望这会有所帮助
答案 2 :(得分：0)
使用以下命令检查Kafka模式注册表端口
[root@in-ibmibm3718 /]# netstat -tnpl |grep 8093
tcp 0 0 0.0.0.0:8093 0.0.0.0:* LISTEN 16862/java
[root@in-ibmibm3718 /]# ps -eaf |grep -i 16862
kafka 16862 1 35 14:35 ? 01:15:19 /usr/jdk64/java-1.8.0-openjdk/bin/java -Xmx512M -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+DisableExplicitGC -Djava.awt.headless=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dschema-registry.log.dir=/var/log/kafka -Dlog4j.configuration=file:/opt/IBM/basecamp/basecamp-schema-registry/bin/../etc/schema-registry/log4j.properties -cp :/opt/IBM/basecamp/basecamp-schema-registry/bin/../package-schema-registry/target/kafka-schema-registry-package-*-development/share/java/schema-registry/*:/opt/IBM/basecamp/basecamp-schema-registry/bin/../share/java/confluent-common/*:/opt/IBM/basecamp/basecamp-schema-registry/bin/../share/java/rest-utils/*:/opt/IBM/basecamp/basecamp-schema-registry/bin/../share/java/schema-registry/* io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain /opt/IBM/basecamp/basecamp-schema-registry/etc/schema-registry/schema-registry.properties
终止该过程，然后再次启动架构注册表
答案 3 :(得分：-1)
我有同样的问题， 只是强行杀死当前正在运行的Zookeeper进程
$ps -ef|grep zookeeper
$kill -9 <process number>
然后再次启动zookeeper和kafka。