I was executiondg the lab 1 of the "ADM-221 | HDP Operations: Administration Foundation (SPLL)" course, but unfortunately it goes wrong
I have 6 small servers used to install a test cluster (1 edge + 2 masters + 3 slaves). the result of the confirm host phase as shown below: (h01.png)
INFO 2018-01-02 18:16:23,972 PingPortListener.py:50 - Ping port listener started on port: 8670 INFO 2018-01-02 18:16:23,975 main.py:437 - Connecting to Ambari server at https://master1.2tk.fr:8440 (192.168.1.11) INFO 2018-01-02 18:16:23,975 NetUtil.py:70 - Connecting to https://master1.2tk.fr:8440/ca WARNING 2018-01-02 18:16:23,977 NetUtil.py:101 - Failed to connect to https://master1.2tk.fr:8440/ca due to [Errno 111] Connection refused WARNING 2018-01-02 18:16:23,977 NetUtil.py:124 - Server at https://master1.2tk.fr:8440 is not reachable, sleeping for 10 seconds... ", None) Connection to master2.2tk.fr closed. SSH command execution finished host=master2.2tk.fr, exitcode=0 Command end time 2018-01-02 18:16:26 Registering with the server...
Registration with the server failed.
I have setup the password-less configuration and all the pre-configuration purpose defined inside the ambari installation guide (https://docs.hortonworks.com/HDPDocuments/Ambari-220.127.116.11/bk_ambari-installation/content/prepare_the_...)
It looks like SSH is working.
This usually is DNS related; do you have the hosts file set on all the nodes? Do you have the firewall/iptables disabled?
Thank you for your answer.
In fact, I have tried to re-install HDP by using a new server as the ambari server... the 2 server which was sucessfully confirmed was the 2 servers I have to re-installed (centos 7)... the others was trying to connect to the previous ambari server... I have re-installed all the other servers with centos 7 and it is running well...