我有一个:
- 从源安装的 Apache Kafka(2.9.2-0.8.1.1)单实例,使用默认配置(
server.properties
等), - Zookeeper(3.4.5+dfsg-2)独立版,从包中安装
..在名为 的 Ubuntu 14.04 LTS 主机上运行hostname1
。
我尝试彻底关闭 Kafka,但是做不到。
我尝试了两种方法:
发送 SIGINT - 但 Kafka 只是忽略它(没有提到在任何日志中接收信号,继续运行)[SIGTERM 有效,但这不是重点]
使用受控关机工具- 但出现以下情况失败......
..堆栈跟踪:
[2015-02-03 12:55:49,461] ERROR Operation failed due to controller failure (kafka.admin.ShutdownBroker$)
java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: hostname1; nested exception is:
java.net.ConnectException: Connection refused]
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:369)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:268)
at kafka.admin.ShutdownBroker$.kafka$admin$ShutdownBroker$$invokeShutdown(ShutdownBroker.scala:56)
at kafka.admin.ShutdownBroker$.main(ShutdownBroker.scala:109)
at kafka.admin.ShutdownBroker.main(ShutdownBroker.scala)
Caused by: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: hostname1; nested exception is:
java.net.ConnectException: Connection refused]
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:118)
at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:203)
at javax.naming.InitialContext.lookup(InitialContext.java:411)
at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1929)
at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1896)
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:286)
... 4 more
Caused by: java.rmi.ConnectException: Connection refused to host: hostname1; nested exception is:
java.net.ConnectException: Connection refused
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:341)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:114)
... 9 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:147)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
... 14 more
答案1
对于 0.8.1.1 此工具:
- 无法开箱即用,
- 不再需要。
引自 “受控关闭工具似乎无法立即使用” Kafka JIRA 问题:
我们还需要这个工具吗?目前,受控关机是通过配置启用的,并在 Kafka 服务器 kill -15 时自动启动。我几乎认为我们可以摆脱一个工具来进行受控关机。
以下是我最终投入的内容config/server.properties
:
controlled.shutdown.enable=true
controlled.shutdown.max.retries=3
controlled.shutdown.retry.backoff.ms=5000
答案2
首先,我使用了错误的信号。我应该使用 SIGTERM (15) 而不是 SIGINT (2)。
第二,正如@MaasSql 指出的那样,你必须在 Kafka 0.8.1.1 中明确开启受控关闭。
(对于 0.8.2+ 你不需要这样做 -默认启用。