Unable to start Most of the services of HDP2.6.1 Sandbox on AWS EC2 instance

I have installed HDP2.6.1 sandbox using docker on AWS EC2 [c5.4xlarge - CentOS 7 (x86_64) - with Updates] instance.

I am also able to change the admin password and able to login to Ambari UI as admin user. But when I login to Ambari UI [http:// myEC2 hostIP:8080] I could see all/most of the services are yellow [showing heartbeat lost status].

I have tried running "Start ALL" but still none of the service is starting, also services which are marked in yellow are not even showing me option of starting that service.

I have not made any changes in docker container setup or to my centos VM. I am not sure what is missing?

Please help me in resolving this issue.

Regards

Finally after doing a lot of debugging, I realized that I was missing an entry in my EC2 instance's /etc/hosts file, Once I made following entry in /etc/hosts file it started working.

I added MY.EC2.IP.ADDRESS sandbox.hortonworks.com ip-MY.EC2.IP.ADDRESS.us-east-2.compute.internal line in your /etc/hosts file, Where MY.EC2.IP.ADDRESS is IP private IP address of my EC2 instance.

Then I logged in to my sandbox container using:

[centos@ip-EC2.IP.ADDRESS ~]$ ssh root@127.0.0.1 -p 2222
enter password: your password
Restart ambari-agent and ambari-server
[root@sandbox ~]service ambari-agent status
[root@sandbox ~]service ambari-agent restart
[root@sandbox ~]service ambari-server status
[root@sandbox ~]service ambari-server restart

Finally I went back to Ambari UI and start all required services individually. My sandbox was up and running.

:-)