如何使用JConsole的连接到EC2？ [英] How do I use Jconsole to connect to EC2?

问题描述

我在我的MacBook上运行JConsole的，并尝试连接到Linux终端上的EC2不具有图形（仅适用于命令行访问）。

I am running Jconsole on my macbook and trying to connect to a linux terminal on ec2 that does not have graphics(only command line access).

我跑我的code是这样的：

I run my code like this:

java -jar program.jar -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9005 
-Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.remote.ssl=false

我看了这里，有通过EC2访问问题（后我有连接问题）和解决方案似乎是 java.rmi.server.hostname到该实例的公共主机名

I read here that there was a problem with accessing via EC2(after I had problems connecting) and the solution seemed to be 'java.rmi.server.hostname to the public hostname of the instance'

我有点困惑，在如何做到这一点。我已经试过两件事情，一是把它直接在我的code（在虚空静态主要部分）：

I'm a bit confused at how to do this. I have tried two things, one to put it directly in my code(in the void static main section):

System.setProperty( "java.rmi.server.hostname" , "external_EC2_address" ); //in my real code I have the correct address here

系统接受了它（没有错误，当我创建/上载运行的JAR）。我也打开了我的情况下防火墙以允许所有TCP流量。没有运气。我尝试了上面的语句也可以作为一个标志，启动该程序，但仍然没有运气。

The system accepted it(no errors when I created/uploaded runnable jar). I also opened the firewall on my instance to allow all TCP traffic. No Luck. I tried the above statement also as a flag to launch to the program but still no luck.

任何想法如何做到这一点？

Any ideas how do this?

更新：这将显示我在java如何绿色，我得到了一步（仍然无法正常工作），但我意识到，把Java的罐子filename.jar，然后选择并没有给我相同的结果为把我的罐子在命令的末尾。我试过了，程序会尝试连接，然后说：连接失败（之前它只是说，它在登录屏幕右侧的距离）。

UPDATE: This will show how green I am at Java, I got a step further(still doesn't work) but I realized putting the java -jar filename.jar and then the options didn't give me the same results as putting my -jar at the end of the command. I tried that and the program tries to connect and then says connection failed(before it would just say it at the login screen right away).

推荐答案

设置虚拟机前的主机名属性启动：

Set the hostname property before the VM starts:

java -Dcom.sun.management.jmxremote \
     -Dcom.sun.management.jmxremote.port=9005 \
     -Dcom.sun.management.jmxremote.authenticate=false \
     -Dcom.sun.management.remote.ssl=false \
     -Djava.rmi.server.hostname=the.public.ip \
     -jar program.jar

添加了相关规则，安全组。

Add the relevant rules to your security group.

最后，确保iptables的停止，因为这可能是因为你没有得到来自外部世界的连接的原因。作为根（或使用sudo ...）：

Finally, ensure iptables is stopped, as this could be the reason that you're not getting a connection from the outside world. As root (or using sudo ...):

# service iptables stop

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