title: If master node failed then how can recover all data on master node and how to again start hadoop cluster?
body: <p>I have three master,slave1,salve2 cluser server of hadoop and My question is like if master server of ambari system failed then how can we recover ? Do we need to add new server and install ambari again or how can we recover our data from failed server. if added new server we can assign as master then how can we do ? could suggest me about master server down then how can resolve this issue ?</p>
  
  <p>Thanks in advance.</p>