[mythtv-users] Unable to connect to the master backend at 192.168.1.100:6543 (16.04 & 0.28)

[Mike Perkins]

On 16/04/16 19:10, Mike Perkins wrote:
> On 16/04/16 18:58, Fred Hamilton wrote:
>> On Fri, Apr 15, 2016 at 7:06 PM, Stephen Worthington <
>> stephen_agent at jsw.gen.nz> wrote:
>>
>>> The address for localhost is 127.0.0.1, not your PC's external address
>>> (192.168.1.100).  If this is a completely new install, then you may
>>> need to set up mysql so that it is accessible on the external address
>>> and possibly also MythTV, although that option should still be in the
>>> database since it is an upgrade, not new.
>>>
>>
>> I've never understood when I should use 'localhost' and when I should use
>> the external IP address in mythtv.  Right now,
>> MythTV frontend hostname = localhost
>> MythTV local backend = 192.168.1.100
>> MythTV master backend = 192.168.1.100
>> .mythtv/config.xml database host = localhost
>> /etc/apache2/sites-enabled/mythweb.conf: setenv db_server "localhost"
>>
>> Is anything obviously wrong there?
>>
>> Per your advice I've been trying to to set up mysql so that it is
>> accessible on the external address.  No luck so far, but I did notice that
>> while 'wget 192.168.1.100:6543' fails to connect,  'wget 192.168.1.100:3306'
>> does connect.  Does that help narrow down where the problem might be?
>>
>> Your wget shows localhost being resolved to two addresses, which
>>> suggests that you have a modified /etc/hosts file where localhost has
>>> been set to two addresses, which is not usually a good idea.
>>
>>
>> You got me -  I was trying something in /etc/hosts.  I've changed it back
>> to the default:
>>
>>> 127.0.0.1 localhost
>>> 192.168.1.100 MythPC
>>
> Localhost means "this computer". If you supply that address to the backend, it won't know where to
> send anything other than itself.
>
> For any mythtv setup that uses more than a single machine that is both back and front end, you
> /must/ give every device an IP address and supply that address to mythtv through setup. That is the
> only way that the backend knows where everything is.
>
Meh. I meant "If the frontend supplies that address to the backend, the backend won't know where to 
send anything other than itself."

-- 

Mike Perkins