How to solve "Connection refused " errors in HDP

[#1]

I have been working on Hortonworks Sandbox. The Sandbox is deployed on CentOS 6.7 server. I was, at some point in time, able to access the Web UIs on my browser from remote PC. But most of the services are not accessible except the welcome page on port 8888. When I try to start the services with command line in PuTTY, no success! That is, the services are not running. When I run this command, netstat -nltu , I can't see the service ports in the list of listening ports. How can I make the ports listen for TCP connection. Any walk through on configuration of iptables and port forwarding would also be highly appreciated!

[#2]

@Kibrom Gebrehiwot

Start ambari server

Use ambari to start services

Port 8080

[#3]

Command

ambari-server start

[#4]

@Neeraj Sabharwal

Ambari server can't start at all!

[#5]

@Kibrom Gebrehiwot you probably shut down the machine abruptly. SSH to the machine, issue shutdown now -r and hope everything comes back. If it doesn't, SSH again, issue "ambari-server start", login to web UI by going to 127.0.0.1:8080 user:admin pass:admin, start services manually. If still doesn't work, import a new sandbox and start from scratch.

[#6]

@Kibrom Gebrehiwot

Grab Artem Ervits answer

[#7]

Thanks @Artem Ervits for your prompt response! I am able to start the ambari server by issuing the command 'ambari-server start' now. But I can't still open Ambari on the browser from my Windows PC. http://<server-name>:8080 shows error: " ERR_CONNECTION_REFUSED". How can I add the HDP service ports to the list of listening ports? I think the issue could be related to port forwarding. How can I forward HDP service ports so that I can access the services from remote machine?

[#8]

Note: I am working on a network protected by firewall. My Local PC and the remote Sandbox Host are on the same LAN. I am remotely accessing the Sandbox Host (deployed onCentOS ) from my Window PC using PuTTY.

[#9]

@Kibrom Gebrehiwot port forwarding is available in network properties of your hypervisor.

[#10]

@Artem Ervits The Sandbox is deployed on CentOS server (base OS) not on virtual machine. I have no GUI access to the server. I can access it only with PuTTY (remotely).