[mythtv-users] Can't connect to remote backend database (again)
johnpilk222 at gmail.com
Sat Aug 7 10:03:19 UTC 2021
On 07/08/2021 06:14, Phill Edwards wrote:
> Thank you for these suggestions. I've got lots of PCs and
> virtual machines around the place so I can have a crack at this.
> I'm pretty sure it's not an issue with the MythBackend server
> config, or the subnet because I have a linux PC on the same
> subnet running MythFrontend which works fine. Inspired by your
> suggestions I think I'll reconfigure a linux frontend to have
> the same IP address as the Chromecast device and see if it can
> connect. That should give me some pointers.
> Well, this is getting "interesting" (i.e. even more frustrating!). I set
> a linux frontend to have the IP address that the Chromecast With Google
> TV was using (192.168.0.125). And I had already set a different password
> in MySQL for mythtv at 192.168.0.125 <mailto:mythtv at 192.168.0.125>. The
> linux frontend connects without any problems. The Chromecast With Google
> TV can't connect. That makes no sense to me.
> So then I managed to install an SSHD app (SSHelper which has to be
> sideloaded from https://arachnoid.com/android/SSHelper/
> <https://arachnoid.com/android/SSHelper/>) on the Chromecast With Google
> Now, if I run this command on my PC the connection succeeds:
> C:\Users\phill>telnet 192.168.0.120 3306
> But if I SSH into the Chromecast With Google TV and run it, it fails as
> $ telnet 192.168.0.120 3306
> kHost '192.168.0.125' is blocked because of many connection errors;
> unblock with 'mysqladmin flush-hosts'Connection closed by foreign host
> I believe this indicates that MySQL on the MythBackend has permanently
> blocked the Chromecast With Google TV due to previously failed
> connection attempts. So I logged into MySQL as root and ran:
> mysql> flush hosts;
> I can now telnet 192.168.0.120 3306.
> But it hasn't fixed the problem. MythFrontend on the Chromecast With
> Google TV still can't connect. I've cleared the cache, cleared the data
> and re-entered the username and password. I've created a new
> account called mythtv2 and tried to connect with that, but that doesn't
> work either.
> I noticed that even after clearing the MythFrontend app data on
> Chromecast With Google TV, when I restart the app it still displays
> mythtv as the user and an old password. This also happened after
> uninstalling and re-installing the app. Where could it be getting thi
> from, and could it indicate a problem that may be behind all this?
Earlier this year I had similar mysterious and persistent attempts to
connect to the wrong backend. I was running master.
Somehow the UPnP section of ~/.mythtv/config.xml had acquired nested
Mythfrontend, DefaultBackend, USN entries. Resetting the host address
worked again after those lines had been commented out. ( <!-- --> )
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