启动Cloudera manager （4台机器都要执行）
root@m1:~# service cloudera-scm-server start Starting cloudera-scm-server: * cloudera-scm-server started root@m1:~#1
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查看Cloudera manager的启动日志，如果能够看到下面的类似信息,说明启动正确，tailf -100 /var/log/cloudera-scm-server/cloudera-scm-server.log或者/var/log/cloudera-scm-server/cloudera-scm-server.out，如果看不到类似下面的信息，那么也可以看到哪里出了问题，大多数都是和数据库的配置有关系。
2014-08-26 23:07:52,643 INFO [JvmPauseMonitor:debug.JvmPauseMonitor@236] Detected pause in JVM or host machine (e.g. a stop the world GC, or JVM not scheduled): paused approximately 1182ms: GC pool 'Copy' had collection(s): count=1 time=1641ms 2014-08-26 23:07:52,644 INFO [JvmPauseMonitor:debug.JvmPauseMonitor@236] Detected pause in JVM or host machine (e.g. a stop the world GC, or JVM not scheduled): paused approximately 1634ms: GC pool 'Copy' had collection(s): count=1 time=1641ms 2014-08-26 23:07:52,696 INFO [WebServerImpl:servlet.DispatcherServlet@339] FrameworkServlet 'Spring MVC Dispatcher Servlet': initialization completed in 18068 ms 2014-08-26 23:07:52,793 INFO [WebServerImpl:cmon.JobDetailGatekeeper@127] ActivityMonitor configured to allow job details for all jobs. 2014-08-26 23:07:53,407 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@399] Initializing SearchTemplateManager:2014-08-27T06:07:53.407Z 2014-08-26 23:07:53,730 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@403] Generating entities:2014-08-27T06:07:53.730Z 2014-08-26 23:07:53,821 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@407] Num entities:112 2014-08-26 23:07:53,822 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@409] Generating documents:2014-08-27T06:07:53.822Z 2014-08-26 23:07:53,891 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@411] Num docs:124 2014-08-26 23:07:53,892 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@352] Constructing repo:2014-08-27T06:07:53.892Z 2014-08-26 23:07:53,979 INFO [WebServerImpl:mortbay.log@67] jetty-6.1.26.cloudera.2 2014-08-26 23:07:54,008 INFO [WebServerImpl:mortbay.log@67] Started SelectChannelConnector@0.0.0.0:7180 2014-08-26 23:07:54,009 INFO [WebServerImpl:cmf.WebServerImpl@292] Started Jetty server. 2014-08-26 23:07:55,276 INFO [SearchRepositoryManager-0:components.SearchRepositoryManager@354] Finished constructing repo:2014-08-27T06:07:55.276Z 4.10、通过Web方式继续安装 4.10.1、创建update-alternatives工具在/usr/sbin/下创建软链