Problem during Ambari Confirm Hosts

[#1]

I am trying to add two more hosts to my existing cluster (only has one right now) but I am running into errors during the Ambari step - Confirm Hosts. The error message is shown below. It says it failed because it finished with a non zero exit code. What does this mean and how can I fix it? I have followed the steps to configure passwordless ssh but I may have done something incorrectly. I have replace the host name with a bunch of x's.

==========================
Creating target directory...
==========================


Command start time 2016-02-23 10:45:50


Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
SSH command execution finished
host=xxxxxxxxxxxxxxxxxxxxx, exitcode=255
Command end time 2016-02-23 10:45:51


ERROR: Bootstrap of host xxxxxxxxxxxxxxxxxxxx fails because previous action finished with non-zero exit code (255)
ERROR MESSAGE: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).


STDOUT: 
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).

[#2]

DNS has been configured but I still got an error message. One of the nodes I got the initial error I posted and the other I got the second error. What do you mean by leverage the /etc/hosts? @Neeraj Sabharwal

[#3]

@Mark Thorson

Make sure that you modify the ambari.ini for agents to point to correct ambari server. Link

/etc/ambari-agent/conf/ambari-agent.ini has ambari server address

[#4]

Alright sounds good. Just to confirm the hostname I should enter would be the server Ambari is running on? Also would the hostname be the FQDN or the DNS name of the server? @Neeraj Sabharwal

[#5]

I had success during the "confirm hosts" stage for one of the servers. During the install I received the attached error message stating it requires fuse but I am unsure what this is. @Neeraj Sabharwal

ambari-install-error.txt

[#6]

I retried the install and the error message did not appear this time. I was able to set up one of the two new servers with a couple warnings.

I tried to manually install the other server the same way but am getting a blank error message just stating the registration failed. When I look at the repolist something doesn't seem right here. It doesn't look like the table shown in the reference guide. @Neeraj Sabharwal

hadoop-support-ambari.jpg

Registering with the server...
Registration with the server failed.

[#7]

@Mark Thorson Let me confirm

1) You are installing ambari server in one of the nodes

2) You are manually installing agent in all the nodes

I won't worry about table yet.

You should go ahead and do the install

yum install ambari-server

and yum install ambari-agent --> in all nodes

[#8]

@Neeraj Sabharwal Yeah that is correct. I have installed Ambari Server on 1 node and Ambari Agent on all 3. The image below is the 3rd server. When I attempt to perform manual registration for this server I get an error message saying the code below.

Registering with the server...
Registration with the server failed.

[#9]

@Mark Thorson Good news!!! 🙂 We have agent there already

modify ini file and add ambar server address then ambari-server start

[#10]

@Neeraj Sabharwal To confirm you mean the ini file on the machine running Ambari Server? I previously had the 3 servers listed in the ini file. Does Ambari Server require a restart after they have been added?

[#11]

@Mark Thorson /etc/ambari-agent/conf/ambari-agent.ini

The ini file in 3rd server.

What step are you on now?