[mythtv-users] Virtualbox frontend cannot connect to backend
Stephen Sassman
sassman at purdue.edu
Sun Feb 14 03:42:46 UTC 2010
Hello all, I have installed mythbuntu in a virtualbox virtual machine with
bridged networking. Nmap says that the ports on the backend server are open
(3306, 6543, 22, etc). but ALL PORTS on the frontend are closed. I don't
know why, but my frontend (192.168.1.103 in virtual machine) cannot connect
to the backend (192.168.1.100). I get the " No UPnP backends found" message.
I believe this is a database error, and indeed I cannot connect to the
database from the command line on the frontend, BUT I CAN connect to
database on the server). I have granted all mysql permissions to the user@"%".
I have tried to diable the firewall using firestarter, but nmap -sS
frontend still says the ports are closed and mysql cannot connect but just
hangs for a long time. I have already changed the bind-address to
192.168.1.100 in my.cnf so I think mysql is listening on the right
interface. Is there something with virtualbox that is blocking the ports? Do
I even need any ports open on a frontend? Why doesn't disabling firewall in
firestarter open the ports? Thanks...
NMAP to backend:
Starting Nmap 5.00 ( http://nmap.org ) at 2010-02-13 22:25 EST
Interesting ports on mythbox (192.168.1.100):
Not shown: 995 filtered ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
80/tcp open http
6543/tcp open mythtv
6547/tcp closed powerchuteplus
NMAP to frontend:
Starting Nmap 5.00 ( http://nmap.org ) at 2010-02-13 22:38 EST
All 1000 scanned ports on 192.168.1.103 are closed
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