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 hostat 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

2013-07-01 23:55:48,703 WARN  [cluster.dao.ManagementServerHostDaoImpl] (Cluster-Heartbeat-1:null) Unexpected exception,
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet successfully received from the server was 1 milliseconds ago.  The last packet sent successfully to the server was 0 milliseconds ago.at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)at java.lang.reflect.Constructor.newInstance(Constructor.java:532)at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)

[mysqld]
wait_timeout=31536000
interactive_timeout=31536000

grant all privileges on *.* to root@"%" identified by "password" with grant option;flush privileges;

sudo /etc/init.d/mysql restart

sudo /etc/init.d/cloud-management restart