I am having a 12 datanode are running, but out of 1 is dead but in ambari alters is not showing which one is dead,

[#1]

How to find which datanode is dead via terminal or ambari

[#2]

@ANSARI FAHEEM AHMED

I think the below command should sort you out if you are not in a kerberized environment

#su - hdfs
$ hdfs dfsadmin -report -dead

$ hdfs dfsadmin -report -alive

The dead and alive nodes will appear

[#3]

Thanks but still not display which one is down, any other command

[#4]

It appear four to six node and at end

one datanode is dead (1)

details of node

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[#5 · Accepted solution]

@ANSARI FAHEEM AHMED

#su - hdfs
$ hdfs dfsadmin -report -dead

[#6]

Thanks a lot , find it and and solve it ?