标签:杂谈分类:Linux
windows 下:
run.bat -c xy -b 0.0.0.0(便于别的 机子访问,也也可为自己机子的ip地址)
单台Linux服务器中如何部署多个独立应用,即多个应用不能run在一个jboss实例中?
换言之,这个问题也可以这样描述:在单台Linux服务器中服务启动多个Jboss实例?
默认情况下,jboss启动时加载server/default/目录下的配置,要实现多个实例的启动,主要是解决端口冲突的问题,因为一套端口只能被一个应用占有;
一般来说,我们可以在Jboss启动时通过-Djboss.server.home设置当前实例启动时加载不同的目录来实现;
比如Jboss主程序安装在/usr/xx/jboss/,应用放在/home/admin/app/;那此时就可以cp一份default目录到当前应用app目录下,通过-Djboss.server.home=/home/admin/app/default来启动该实例;
若直接在/usr/xx/jboss/server/下复制default目录并改名为yy,则可以用更简单的参数-c yy来启动;
对于多应用的情况,我们仍然要解决端口冲突的问题,有两种方式:
其一,直接修改各应用对应的default目录下的所有配置端口,主要涉及配置文件conf/jboss-service.xml、tomcat下的server.xml;该方法比较土,很容易出错,因为端口众多,只要有一项端口没有改,jboss就将无法正常启动;若应用较少,比如就只有2个,那这种方式勉强可以用用;
其二,在jboss-service.xml中启用jboss.system:service=ServiceBindingManager这个mbean服务,设置ServerName、StoreURL属性;将各套应用对应的端口全部配置在同一个文件中;推荐采用该方案,具体可参考:view plaincopy to clipboardprint?
org.jboss.services.binding.XMLServicesStoreFactory
org.jboss.services.binding.XMLServicesStoreFactory
Jboss无法正常启动,报异常javax.management.MBeanRegistrationException: preRegister() failed?
一般来说,上面的异常出现在4.2及其以后的版本中,比较详细的异常如下:view plaincopy to clipboardprint?
javax.management.MBeanRegistrationException: preRegister() failed: [ObjectName='jboss.remoting:service=NetworkRegistry', Class=org.jboss.remoting.network.NetworkRegistry (org.jboss.remoting.network.NetworkRegistry@16b6c55)]
at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:713)
at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:211)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
... 51 more
Caused by: java.lang.RuntimeException: Exception creating identity: mall_dev4: mall_dev4
at org.jboss.remoting.ident.Identity.get(Identity.java:211)
at org.jboss.remoting.network.NetworkRegistry.preRegister(NetworkRegistry.java:268)
at org.jboss.mx.server.AbstractMBeanInvoker.invokePreRegister(AbstractMBeanInvoker.java:966)
at org.jboss.mx.modelmbean.ModelMBeanInvoker.invokePreRegister(ModelMBeanInvoker.java:489)
at org.jboss.mx.server.AbstractMBeanInvoker.preRegister(AbstractMBeanInvoker.java:654)
at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:697)
... 56 more
javax.management.MBeanRegistrationException: preRegister() failed: [ObjectName='jboss.remoting:service=NetworkRegistry', Class=org.jboss.remoting.network.NetworkRegistry (org.jboss.remoting.network.NetworkRegistry@16b6c55)]
at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:713)
at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:211)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
... 51 more
Caused by: java.lang.RuntimeException: Exception creating identity: mall_dev4: mall_dev4
at org.jboss.remoting.ident.Identity.get(Identity.java:211)
at org.jboss.remoting.network.NetworkRegistry.preRegister(NetworkRegistry.java:268)
at org.jboss.mx.server.AbstractMBeanInvoker.invokePreRegister(AbstractMBeanInvoker.java:966)
at org.jboss.mx.modelmbean.ModelMBeanInvoker.invokePreRegister(ModelMBeanInvoker.java:489)
at org.jboss.mx.server.AbstractMBeanInvoker.preRegister(AbstractMBeanInvoker.java:654)
at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:697)
... 56 more
这主要是因为Jboss启动了一个jboss.remoting:service=NetworkRegistry的mbean服务,启动时却又无法根据当前hostname找到IP!
解决方案为在/etc/hosts中绑定当前服务器的主机名和IP,比如10.2.224.214 mall_dev4;
对于4.2系列之前的版本,如果没有绑定主机名和IP,虽然会出现以下的异常,但并不一定会影响应用的正常启动;view plaincopy to clipboardprint?
11:32:12,427 WARN [ServiceController] Problem starting service jboss:service=invoker,type=http
java.net.UnknownHostException: mall_dev4: mall_dev4
at java.net.InetAddress.getLocalHost(InetAddress.java:1308)
at org.jboss.invocation.http.server.HttpInvoker.checkInvokerURL(HttpInvoker.java:204)
at org.jboss.invocation.http.server.HttpInvoker.startService(HttpInvoker.java:101)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
at $Proxy0.start(Unknown Source)
at org.jboss.system.ServiceController.start(ServiceController.java:417)
11:32:12,427 WARN [ServiceController] Problem starting service jboss:service=invoker,type=http
java.net.UnknownHostException: mall_dev4: mall_dev4
at java.net.InetAddress.getLocalHost(InetAddress.java:1308)
at org.jboss.invocation.http.server.HttpInvoker.checkInvokerURL(HttpInvoker.java:204)
at org.jboss.invocation.http.server.HttpInvoker.startService(HttpInvoker.java:101)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
at $Proxy0.start(Unknown Source)
at org.jboss.system.ServiceController.start(ServiceController.java:417)
Jboss已经正常启动,但是无法用IP或者绑定IP访问应用?
熟悉Linux相关知识的筒靴都知道一个端口是绑定在某个地址上的,可以是一个,也可以是多个,一个端口在同一个地址上不能被两个应用占有;
出现这个问题一般是因为你使用的是4.2系列及其之后的版本,因为从这个系列开始,Jboss默认绑定的端口由之前的0.0.0.0变成了127.0.0.1;前者表示绑定当前服务器下所有地址,包括自身的IP、127.0.0.1;而后者只绑定了127.0.0.1,而没有绑定本机IP,通过IP去访问应用自然也就无法成功了,因为访问的IP地址没有开放对应的端口;
对于默认的这种情况,一般来说jboss是要和apache搭配使用的,apache暴露应用外部访问的端口,然后apache再监听本地(也就是127.0.0.1)的端口;
当然这个默认配置也是可以修改的,方式也比较多,比如:
方式1,启动脚本中通过参数-b, --host=
方式2,启动脚本中通过参数-Djboss.bind.address指定地址,比如-Djboss.bind.address=0.0.0.0;
方式3,直接修改需要对外暴露的端口绑定地址,比如tomcat/server.xml中的http端口绑定address信息;
Jboss正常启动,但是用shutdown脚本无法关闭应用?
对于jboss的关闭,shutdown命令允许好几种方式的关闭,可以参考该命令的帮助:view plaincopy to clipboardprint?
usage: shutdown [options]
options:
-h,--help Show this help message (default)
-D
-- Stop processing options
-s,--server=
-n,--serverName=
-a,--adapter=
-u,--user=
-p,--password=
operations:
-S,--shutdown Shutdown the server
-e,--exit= Force the VM to exit with a status code
-H,--halt= Force the VM to halt with a status code
usage: shutdown [options]
options:
-h,--help Show this help message (default)
-D
-- Stop processing options
-s,--server=
-n,--serverName=
-a,--adapter=
-u,--user=
-p,--password=
operations:
-S,--shutdown Shutdown the server
-e,--exit= Force the VM to exit with a status code
-H,--halt= Force the VM to halt with a status code 一般来说,我们使用-s参数来关闭,也即通过JNDI URL;
若是基于JNDI URL的方式出现这种情况一般有三种可能:
其一,当前应用所使用的default目录内的内容与当前运行jboss自身的default内容不一致,比如当前jboss版本为4.0.5,而启动时指定的default却是从jboss 4.2.1中cp过来的;这种情况在搭建环境时经常出现,因为一般直接从另外一台linux服务器中scp过来,但其实两台服务器自身安装的jboss版本不一致;
其二,shutdown命令中指定的JNDI端口与实际应用启动的JNDI端口不一致;
其三,/etc/hosts中对当前主机名绑定的IP地址不正确,比如当前服务器实际的IP地址为10.2.224.214,而hosts中绑定的却是10.0.0.1;
总之,出现此类情况都是因为jboss自身无法正确接收到正确的关闭命令所致,一般来说在jboss的server.log中会抛如下的异常信息:
view plaincopy to clipboardprint?
Exception in thread "main" javax.naming.CommunicationException [Root exception is java.rmi.ConnectException: Connection refused to host: 10.0.0.1; nested exception is:
java.net.ConnectException: Connection timed out]
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:707)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at org.jboss.Shutdown.main(Shutdown.java:202)
Caused by: java.rmi.ConnectException: Connection refused to host: 10.0.0.1; nested exception is:
java.net.ConnectException: Connection timed out
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:574)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:94)
at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:610)
... 3 more
Exception in thread "main" javax.naming.CommunicationException [Root exception is java.rmi.ConnectException: Connection refused to host: 10.0.0.1; nested exception is:
java.net.ConnectException: Connection timed out]
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:707)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at org.jboss.Shutdown.main(Shutdown.java:202)
Caused by: java.rmi.ConnectException: Connection refused to host: 10.0.0.1; nested exception is:
java.net.ConnectException: Connection timed out
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:574)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:94)
at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:610)
... 3 more
如何对Linux下的Jboss应用进行debug?
其实这个问题和Jboss是否部署在Linux下没有直接关系,可以在jboss启动时指定远程debug端口即可,比如:
view plaincopy to clipboardprint?
-Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n
-Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n
然后在eclipse中新建remote debug时指定对应的端口即可;