Cassandra docker - 无法通过JMX连接

Question

Cassandra docker - 无法通过JMX连接

3

我正在尝试连接位于Docker容器内的Cassandra，通过JMX连接遇到了困难。我在AWS上运行（这意味着我获得了NATted IP）。以下是我尝试过的事情：

创建jmxremote.password文件
添加jmxremote.password文件以启用jmx连接。我从中创建映像的Dockerfile：

FROM cassandra:latest

COPY ./jmxremote.password /etc/cassandra/jmxremote.password

RUN chmod 400 /etc/cassandra/jmxremote.password

COPY ./jmxremote.password /etc/java-8-openjdk/management/jmxremote.password

使用上述dockerfile构建映像
运行容器：

docker run -P -d -e "JVM_OPTS=-Djava.rmi.server.hostname=10.0.1.12" -e "LOCAL_JMX=no" -e

这会引发以下异常：

java.rmi.ConnectException: Connection refused to host: 10.0.1.12; 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.invoke(UnicastRef.java:130)
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 sun.tools.jconsole.ProxyClient.tryConnect(ProxyClient.java:368)
at sun.tools.jconsole.ProxyClient.connect(ProxyClient.java:313)
at sun.tools.jconsole.VMPanel$2.run(VMPanel.java:294)

Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) at java.net.Socket.<init>(Socket.java:434) at java.net.Socket.<init>(Socket.java:211) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:148) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613) ... 9 more

我尝试在cassandra.yaml文件中将listen_address设置为我的主机IP（10.0.1.12），因为默认情况下该值设置为docker IP，但是结果相同。
我还尝试在启动容器时设置环境变量"CASSANDRA_START_RPC=true"，但是遇到了相同的问题。

请问有人能提供指导或帮助解决这个问题吗？这个问题已经完全阻塞了我几天时间。非常感谢您花费时间并分享您的知识。

谢谢， Sudoer

- Sudoer

1个回答

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- Andrey.Kozyrev · Accepted Answer

我这样关闭了JMX身份验证：

Dockerfile:

FROM cassandra

RUN sed -i 's/JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.authenticate=true"/JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.authenticate=false"/g' /etc/cassandra/cassandra-env.sh

RUN sed -i '/password/d' /etc/cassandra/cassandra-env.sh

docker-compose.yml:

environment:
    - LOCAL_JMX=no
    - JVM_EXTRA_OPTS=-Djava.rmi.server.hostname=127.0.0.1