[mythtv-users] Switching frontends to different backends failing

[Greg Oliver]

On Thu, Dec 19, 2019 at 9:15 AM James Abernathy <jfabernathy at gmail.com>
wrote:

>
> > On Dec 19, 2019, at 9:47 AM, Jim Abernathy <jfabernathy at gmail.com>
> wrote:
> >
> > I'm doing some testing since it's too cold to go outside.  I have a
> production V30 backend that does all my normal recording of OTA Network
> shows using a PCIe tuner.
> >
> > Under test I have a RPI4 V30 backend recording from a HDHR Quatro and
> I've had some show breakups that I know are not antenna problems. It's
> either HDHR or network issues.
> >
> > So to test this out I have to switch my Shield TV Mythtv Frontend (v31
> Pre 539) to the RPI4 from the production backend but it fails.
> >
> > On the Shield TV I can switch Mythtv Leanfront v0-86 just by changing
> the IP address and refreshing.  Same with Kodi 18.5.
> >
> > On the Shield TV Mythtv Frontend I change the IP and the password for
> the mythconverg database but it fails to connect even after a restart. So
> I'm assuming I'm missing a step.
> >
> > The RP4 had it's mythconverg setup with the following commands in a
> script:
> >
> > CREATE DATABASE IF NOT EXISTS mythconverg;
> > CREATE USER IF NOT EXISTS 'mythtv'@'%' IDENTIFIED BY 'mythtv';
> > CREATE USER IF NOT EXISTS 'mythtv'@'localhost' IDENTIFIED BY 'mythtv';
> > SET PASSWORD FOR 'mythtv'@'%' = PASSWORD('$mythtv_password');
> > SET PASSWORD FOR 'mythtv'@'localhost' = PASSWORD('$mythtv_password');
> > CONNECT mythconverg;
> > GRANT ALL PRIVILEGES ON *.* TO 'mythtv'@'%' WITH GRANT OPTION;
> > GRANT ALL PRIVILEGES ON *.* TO 'mythtv'@'localhost' WITH GRANT OPTION;
> > FLUSH PRIVILEGES;
> > EXIT
> >
> > And the /etc/mysql/mariadb.conf.d/mythtv.cnf has the '#' removed from
> the bind-address statement.
> >
> > Anyone know the missing piece??
> >
> > Jim A
> >
> >
>
> Some additional data.  I checked the mythtv-setup on the RPI4 backend and
> noticed the Primary IP Address/DNS name was 127.0.0.1.  I hit enter and it
> listed a bunch of different addressed so I selected it’s real IP address of
> 192.168.0.44. After saving the change and exiting, I restarting the backend
> I noticed a change.
>
> The mythtv frontend didn’t fail to connect to the backend, it just changed
> the IP and password back to the Production backend and works normally.  No
> matter how many times I change the IP to 192.168.0.44 and the password to
> ‘mythtv’ and save the results, when I exit and restart the FE it’s back
> pointing to the production backend and not the RPi4 backend.
>
> I’ll try clearing all data for the frontend app on the Shield and see what
> happens. I was hoping not to have to do that.
>
> Jim A


IIRC, the frontends use UPnP if available to find backends.  I have been
running the backend with --noupnp for so long that I cannot remember why I
turned it off, but I think this exact thing was it.

>
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