把你的环境描述下。 管理端，哪种虚拟化，高级网络还是基本网络，网络怎么规划的等等。这样贴日志，不太好查原因。
2014-09-17 11:42 GMT+08:00 yan_5...@163.com <yan_5...@163.com>: > com.cloud.exception.AgentUnavailableException: Resource [Host:18] is > unreachable: Host 18: Unable to start instance due to null > > 用的kvm?agent安装了吗 > 到主机的路由是不是正常的 > > > yan_5...@163.com > > 发件人： 严思恒 > 发送时间： 2014-09-16 16:16 > 收件人： users-cn@cloudstack.apache.org > 主题： CS4.2.1下系统虚拟机起不来，重复创建!!!! > > > CS4.2.1添加过二级存储，里面已经有系统模版，系统虚拟会重复建，log中的异常是下面信息，给指点指点，CS4.0.2的环境测过 二级存储 > 是可以用的，系统虚拟正常启动，就CS4.2.1起不来，帮帮忙！！！！！！！！ > > > 2014-09-16 15:39:35,858 WARN [cloud.consoleproxy.ConsoleProxyManagerImpl] > (consoleproxy-1:null) Exception while trying to start console proxy > com.cloud.exception.AgentUnavailableException: Resource [Host:18] is > unreachable: Host 18: Unable to start instance due to null > at > com.cloud.vm.VirtualMachineManagerImpl.advanceStart(VirtualMachineManagerImpl.java:1010) > at > com.cloud.vm.VirtualMachineManagerImpl.start(VirtualMachineManagerImpl.java:587) > at > com.cloud.vm.VirtualMachineManagerImpl.start(VirtualMachineManagerImpl.java:580) > at > com.cloud.consoleproxy.ConsoleProxyManagerImpl.startProxy(ConsoleProxyManagerImpl.java:556) > at > com.cloud.consoleproxy.ConsoleProxyManagerImpl.allocCapacity(ConsoleProxyManagerImpl.java:928) > at > com.cloud.consoleproxy.ConsoleProxyManagerImpl.expandPool(ConsoleProxyManagerImpl.java:1672) > at > com.cloud.consoleproxy.ConsoleProxyManagerImpl.expandPool(ConsoleProxyManagerImpl.java:157) > at > com.cloud.vm.SystemVmLoadScanner.loadScan(SystemVmLoadScanner.java:111) > at > com.cloud.vm.SystemVmLoadScanner.access$100(SystemVmLoadScanner.java:33) > at > com.cloud.vm.SystemVmLoadScanner$1.reallyRun(SystemVmLoadScanner.java:81) > at > com.cloud.vm.SystemVmLoadScanner$1.run(SystemVmLoadScanner.java:72) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at > java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351) > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267) > 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) > Caused by: java.lang.NullPointerException > at > org.apache.cloudstack.storage.volume.VolumeServiceImpl.createBaseImageAsync(VolumeServiceImpl.java:428) > at > org.apache.cloudstack.storage.volume.VolumeServiceImpl.createVolumeFromTemplateAsync(VolumeServiceImpl.java:575) > at > com.cloud.storage.VolumeManagerImpl.recreateVolume(VolumeManagerImpl.java:2596) > at > com.cloud.storage.VolumeManagerImpl.prepare(VolumeManagerImpl.java:2660) > at > com.cloud.vm.VirtualMachineManagerImpl.advanceStart(VirtualMachineManagerImpl.java:899) > ... 19 more >
