问个问题：Unable to add the host

[lgstar888 <lg...@163.com>]

Dear all,
我在添加host的时候出现这个错误。
Unable to add the host 
有人遇到过吗？跟哪些方面有关系呢？

异常信息如下：
2013-06-27 09:07:19,659 INFO  [cloud.resource.ResourceManagerImpl] (catalina-exec-17:null) Trying to add a new host at http://192.168.74.143 in data center 3
2013-06-27 09:07:19,664 WARN  [kvm.discoverer.KvmServerDiscoverer] (catalina-exec-17:null)  can't setup agent, due to java.io.IOException: There was a problem while connecting to 192.168.74.143:22 - There was a problem while connecting to 192.168.74.143:22
2013-06-27 09:07:19,664 WARN  [cloud.resource.ResourceManagerImpl] (catalina-exec-17:null) Unable to find the server resources at http://192.168.74.143
2013-06-27 09:07:19,664 WARN  [api.commands.AddHostCmd] (catalina-exec-17:null) Exception: 
com.cloud.exception.DiscoveryException: Unable to add the host
    at com.cloud.resource.ResourceManagerImpl.discoverHostsFull(ResourceManagerImpl.java:737)
    at com.cloud.resource.ResourceManagerImpl.discoverHosts(ResourceManagerImpl.java:544)
    at com.cloud.api.commands.AddHostCmd.execute(AddHostCmd.java:140)
    at com.cloud.api.ApiDispatcher.dispatch(ApiDispatcher.java:138)
    at com.cloud.api.ApiServer.queueCommand(ApiServer.java:544)
    at com.cloud.api.ApiServer.handleRequest(ApiServer.java:423)
    at com.cloud.api.ApiServlet.processRequest(ApiServlet.java:312)
    at com.cloud.api.ApiServlet.doGet(ApiServlet.java:64)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:889)
    at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:744)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2282)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:679)
2013-06-27 09:07:19,666 WARN  [cloud.api.ApiDispatcher] (catalina-exec-17:null) class com.cloud.api.ServerApiException : Unable to add the host




lgstar888