Question

我无法使用 Java Mission Control 连接到远程VM。我可以相对轻松地使用 VisualVM 进行连接。我想使用Mission Control的原因是因为每当重新启动远程VM时，必须重新启动VisualVM的长期错误。因此，远程JMX连接中涉及的大部分工作已经就位。

我已按照此处的说明增强了Mission Control的配置：https://technology.first8.nl/using-mission-controle-for-remote-profiling/

Java版本： 1.7.0_79-b15

JVM参数：

-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=redacted 
-XX:+HeapDumpOnOutOfMemoryError 
-XX:HeapDumpPath=/foo/bar/service
-XX:+UnlockCommercialFeatures
-XX:+FlightRecorder
-Dcom.sun.management.jmxremote.port=8401
-Dcom.sun.management.jmxremote.rmi.port=8402
-Dcom.sun.management.jmxremote.access.file=/foo/bar/service/jmxremote.access
-Djava.security.auth.login.config=ldap.config
-Djava.rmi.server.hostname=< redacted public IP address >
-Dcom.sun.management.jmxremote.login.config=< redacted JMX config name >
-Dcom.sun.management.jmxremote.local=false
-Djavax.net.ssl.keyStore=keystore.jks
-Djavax.net.ssl.keyStorePassword=< redacted password >
-Dcom.sun.management.jmxremote.registry.ssl=false
-Djava.net.preferIPv4Stack=true
-Djava.util.logging.config.file=/foo/bar/service/logging.properties

我正在使用身份验证和SSL，因为它正在生产环境中使用。 JMX服务器和RMI端口是不同的，因为由于某种原因我无法让它们在同一个端口上工作。

自定义JMX远程访问 jmxremote.access ：

monitorRole   readonly
controlRole   readwrite \
              create javax.management.monitor.*,javax.management.timer.*,com.sun.management.*,com.oracle.jrockit.* \
              unregister

每当我尝试连接 Flight Control 或控制台时，我都会收到以下消息：

Could not connect to Foo Bar Service : access denied ("javax.management.MBeanPermission" "javax.management.MBeanServerDelegate#-[JMImplementation:type=MBeanServerDelegate]" "addNotificationListener")
Unable to resolve the connection credentials for Foo Bar Service. Problem was: access denied ("javax.management.MBeanPermission" "javax.management.MBeanServerDelegate#-[JMImplementation:type=MBeanServerDelegate]" "addNotificationListener")

这对我来说没有意义，因为身份验证和授权与VisualVM一起正常工作，事实上当与Mission Control连接时，我在服务器日志中看到了这一点：

[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:initialize:481]:              [LdapLoginModule] search-first mode; SSL disabled
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:login:508]:           [LdapLoginModule] user provider: ldap://localhost/ou=redacted-ou,dc=redacted-dc-1,dc=redacted-dc-2
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:findUserDN:868]:              [LdapLoginModule] searching for entry belonging to user: redacted-user
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:findUserDN:895]:              [LdapLoginModule] found entry: uid=redacted-user,ou=redacted-ou,dc=redacted-dc-1,dc=redacted-dc-2
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:attemptAuthentication:807]:           [LdapLoginModule] attempting to authenticate user: redacted-user
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:login:570]:           [LdapLoginModule] authentication succeeded
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:commit:621]:          [LdapLoginModule] added LdapPrincipal "uid=redacted-user,ou=redacted-ou,dc=redacted-dc-1,dc=redacted-dc-2" to Subject
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:commit:631]:          [LdapLoginModule] added UserPrincipal "redacted-user" to Subject
[16:46:47] [RMI TCP Connection(2044)-some.redacted.ip.address/INFO] [STDOUT]: [com.sun.security.auth.module.LdapLoginModule:commit:642]:          [LdapLoginModule] added UserPrincipal "controlRole" to Subject

我认为禁用LDAP服务器SSL是安全的，因为它不会暴露在VPS之外（反馈欢迎）。正如你所看到的那样，我认为消息“认证成功”和“添加UserPrincipal”controlRole“到主题”它正在工作，但Mission Control不同意。似乎没有任何javax.management.*特定日志消息指示出现了什么问题。

Answer 1

错误消息显示全部 - 授予添加通知侦听器的权限。 IIRC，JMC将监听通知，以便在添加或删除MBean时正确更新MBean树。

Answer 2

我根据Hirt的回答解决了这个问题，但这并非易事。我使用以下内容修改了默认的Java安全策略：

//
// permissions for the user/principal "controlRole", for all codebases:
//
grant principal com.sun.security.auth.UserPrincipal "controlRole" {

    //
    // jconsole:
    //  - most of these permissions are needed to let JConsole query the 
    //    MBean server and display information about Derby's mbeans as well
    //    as some default platform MBeans/MXBeans.
    //  - if you don't use JConsole, but query the MBean server from your
    //    JMX client app, some of these permissions may be needed.
    permission javax.management.MBeanPermission 
        "sun.management.*#-[java.*:*]", 
        "getMBeanInfo,isInstanceOf,queryNames";
    permission javax.management.MBeanPermission 
        "sun.management.*#*[java.*:*]", "getAttribute,invoke";
    permission javax.management.MBeanPermission 
        "sun.management.*#-[com.sun.management*:*]", 
        "getMBeanInfo,isInstanceOf,queryNames";
    permission javax.management.MBeanPermission 
        "com.sun.management.*#-[java.*:*]", 
        "getMBeanInfo,isInstanceOf,queryNames";
    permission javax.management.MBeanPermission 
        "com.sun.management.*#*[java.*:*]", "getAttribute,invoke";
    permission javax.management.MBeanPermission "java.*#-[java.*:*]", 
        "getMBeanInfo,isInstanceOf,queryNames";
    permission javax.management.MBeanPermission "javax.management.MBeanServerDelegate#[JMImplementation:type=MBeanServerDelegate]", 
        "getMBeanInfo,isInstanceOf,queryNames,addNotificationListener";
    permission java.net.SocketPermission "*", "resolve";
    permission java.util.PropertyPermission "java.class.path", "read";
    permission java.util.PropertyPermission "java.library.path", "read";
    permission java.lang.management.ManagementPermission "monitor";
    // end jconsole
};

由于我使用LDAP进行身份验证的方式，这里使用com.sun.security.auth.UserPrincipal类是关键。

Java Mission Control - 访问被拒绝连接到远程

2 个答案: