CDH重启后发生一系列问题！！求解答

前言：按照CDH5之前是主节点和从节点都运行正常。jps查询角色都在运行。。 然后重启了服务器就发生了很多故障
1.CDH5 登陆页面出现     无法发出查询：Host Monitor启动失败
2.   查看日志 cloudera-scm-server.log   错误如下
2016-04-22 12:01:29,680 ERROR 1765339278@scm-web-17:org.mortbay.log: /cmf/role/24/tail
java.lang.NullPointerException
        at org.springframework.web.servlet.view.RedirectView.appendQueryProperties(RedirectView.java:252)
        at org.springframework.web.servlet.view.RedirectView.renderMergedOutputModel(RedirectView.java:225)
        at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
        at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    查看日志cloudera-scm-agent.log   错误如下
   22/Apr/2016 11:57:49 +0000] 2493 MonitorDaemon-Reporter throttling_logger ERROR    (10 skipped) Error sending messages to firehose: mgmt-HOSTMONITOR-d6806ad16a64947556232e5f134692de
Traceback (most recent call last):
  File "/opt/cm-5.5.0/lib64/cmf/agent/src/cmf/monitor/firehose.py", line 116, in _send
    self._port)
  File "/opt/cm-5.5.0/lib64/cmf/agent/build/env/lib/python2.7/site-packages/avro-1.6.3-py2.7.egg/avro/ipc.py", line 469, in __init__
    self.conn.connect()
  File "/usr/lib64/python2.7/httplib.py", line 772, in connect
    self.timeout, self.source_address)
  File "/usr/lib64/python2.7/socket.py", line 571, in create_connection
    raise err
error: [Errno 111] Connection refused

----新人求解

这个看不出什么问题来。
先看看服务哪些出问题了。最好有图和日志