我按照“启用 JMX 身份验证”的说明进行操作：
http://docs.datastax.com/en/cassandra/2.2/cassandra/configuration/secureJmxAuthentication.html http://docs.datastax.com/en/cassandra/2.2/cassandra/configuration/secureJmxAuthentication.html
但是我遇到了这个问题：
nodetool status -u cassandra -pw cassandra
error: Authentication failed! Credentials required
-- StackTrace --
java.lang.SecurityException: Authentication failed! Credentials required
at com.sun.jmx.remote.security.JMXPluggableAuthenticator.authenticationFailure(JMXPluggableAuthenticator.java:211)
at com.sun.jmx.remote.security.JMXPluggableAuthenticator.authenticate(JMXPluggableAuthenticator.java:163)
at sun.management.jmxremote.ConnectorBootstrap$AccessFileCheckerAuthenticator.authenticate(ConnectorBootstrap.java:219)
at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:232)
at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$79(TCPTransport.java:683)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:276)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:253)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:162)
at javax.management.remote.rmi.RMIServerImpl_Stub.newClient(Unknown Source)
at javax.management.remote.rmi.RMIConnector.getConnection(RMIConnector.java:2432)
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:308)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:270)
at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:183)
at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:150)
at org.apache.cassandra.tools.NodeTool$NodeToolCmd.connect(NodeTool.java:297)
at org.apache.cassandra.tools.NodeTool$NodeToolCmd.run(NodeTool.java:237)
at org.apache.cassandra.tools.NodeTool.main(NodeTool.java:153)
我的配置是这样的：
/etc/cassandra/jmxremote.password
cassandra cassandra
/opt/jdk1.8.0_60/jre/lib/management/jmxremote.access
monitorRole readonly
cassandra readwrite
controlRole readwrite \
create javax.management.monitor.*,javax.management.timer.* \
unregister
/etc/cassandra/cassandra-env.sh
LOCAL_JMX=no
if [ "$LOCAL_JMX" = "yes" ]; then
JVM_OPTS="$JVM_OPTS -Dcassandra.jmx.local.port=$JMX_PORT -XX:+DisableExplicitGC"
else
JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.port=$JMX_PORT"
JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.rmi.port=$JMX_PORT"
JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.ssl=false"
JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.authenticate=true"
JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.password.file=/etc/cassandra/jmxremote.password"
也许其他人也面临同样的问题？
卡桑德拉版本：2.2.1
JAVA版本：1.8.0_60
将命令放在末尾，将选项放在开头，如下所示：
nodetool -u cassandra -pw cassandra status
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