CODEWITHSUNDEEP
hadoop
Roger
Roger

Reputation: 13

Hadoop Ambari cannot confirm hosts

I tried to use Ambari to manage the installation and maintenance of the Hadoop cluster.

After I started ambari server, I use the web page to set up Hadoop cluster.

But at the 3rd step-- confirm hosts, the error shows below

And I check the log at /var/log/ambari-server, I found:

INFO:root:BootStrapping hosts ['qiao'] using /usr/lib/python2.6/site-packages/ambari_server cluster primary OS: redhat6 with user 'root' sshKey File /var/run/ambari-server/bootstrap/1/sshKey password File null using tmp dir /var/run/ambari-server/bootstrap/1 ambari: master; server_port: 8080; ambari version: 1.4.1.25

INFO:root:Executing parallel bootstrap

ERROR:root:ERROR: Bootstrap of host qiao fails because previous action finished with non-zero exit code (1)

INFO:root:Finished parallel bootstrap

Upvotes: 1

Views: 12775

Answers (3)

wjp
wjp

Reputation: 148

Make sure you can ssh to every single host on the list, including all master hosts.

To do this, ensure that Ambari host's .ssh/id_rsa.pub entry is included in every hosts' .ssh/authorized_keys file. Then ssh from Ambari's host to every single server - and check if it is asking for your password. You can use a tutorial like http://www.tecmint.com/ssh-passwordless-login-using-ssh-keygen-in-5-easy-steps/ to check if everything has been done properly.

You need to do the same on the Ambari host itself, if you added it to hosts list.

Upvotes: 0

shalishvj
shalishvj

Reputation: 1

Pls restart ambari-server

ambari-server restart

and then try accessing Ambari

It would work.

Upvotes: 0

WeiChing 林煒清
WeiChing 林煒清

Reputation: 4469

Do you provide ssh rsa private key or paste it? and from the place you are installing, make sure you can ssh to any hosts without typing any password. If still the same error, try

ambari-server reset

ambari-server setup

Upvotes: 2

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