I have two Hadoop processes (with web UI interface) running on a CentOS 5.3 machine inside a VirtualBox. I cannot access both interfaces from my host machine via port forwarding. Either first or second is not working and I cannot make both of them work concurrently.
Both processes are configured via guest hostname - master. One web UI I can access via master:8088 or guest machine IP - 10.0.2.15:8088 but the second one I can access only via loacalhost:50070
I can make it work by modifying machine's
127.0.0.1 localhost master
But obviously the second one stops working.
I have several questions:
- Is there a way how to make both working?
- Is it possible to find a network interface the process is bind to?
- What is the relation between hostname and network interface?
- Is it automatic that when I access on a guest machine master:8088 it gets translated to 188.8.131.52:8088? To me it seems that I have to have a host entry which maps those two together. Am I right? (I do not consider DHCP).
I tried to use
netstat commands but that doesn't answer my questions so it would be great to clarify those.