[mythtv-users] Mythfrontend will not start

Jack McGee jack at greendesk.net
Wed Aug 31 23:02:09 UTC 2016


On 08/31/2016 12:20 PM, Jack McGee wrote:
> On 08/31/2016 11:51 AM, Jack McGee wrote:
>> On 08/31/2016 09:26 AM, Bill Meek wrote:
>>> On 08/31/2016 07:03 AM, Jack McGee wrote:
>>> ...
>>>> and on backend:
>>>> mythuser at amethi:~$ sudo netstat -tnlp | grep :6543
>>>> [sudo] password for mythuser:
>>>> tcp        0      0 127.0.0.1:6543          0.0.0.0:* LISTEN      
>>>> 3048/mythbackend
>>>> tcp6       0      0 ::1:6543                :::* LISTEN 
>>>> 3048/mythbackend
>>>>
>>>> and I stopped and restarted backend:
>>> ...
>>>> Aug 31 07:01:50 amethi mythbackend: mythbackend[11751]: I 
>>>> CoreContext serverpool.cpp:407 (listen) Listening on TCP 
>>>> 192.168.0.105:65<nn>
>>>
>>> The lines from the backend log are good, did the netstat
>>> *after* the reboot look the same (not listening on the Private
>>> Network address?)
>>>
>>> If it's now listening, then try: systemctl cat mythtv-backend.service
>>> as I _think_ there are suggested solutions in the comments there.
>>>
>>> Or here: 
>>> https://www.mythtv.org/wiki/Systemd_mythbackend_Configuration#Delay_starting_the_backend_until_network_has_initialized
>>>
>>>
>>
>> After restarting backend, the frontend::
>> mythuser at mythuser-ZBOX-ID84:~$ nmap -p3306,6543 --reason 192.168.0.105
>>
>> Starting Nmap 7.01 ( https://nmap.org ) at 2016-08-31 11:33 CDT
>> Nmap scan report for 192.168.0.105
>> Host is up, received syn-ack (0.00060s latency).
>> PORT     STATE SERVICE REASON
>> 3306/tcp open  mysql   syn-ack
>> 6543/tcp open  mythtv  syn-ack
>>
>> Nmap done: 1 IP address (1 host up) scanned in 13.15 seconds
>> mythuser at mythuser-ZBOX-ID84:~$ systemctl cat mythtv-backend.service
>> # /dev/null
>> mythuser at mythuser-ZBOX-ID84:~$ locate config.xml
>> /etc/mythtv/config.xml
>> /home/mythtv/.mythtv/config.xml
>> /usr/lib/python3/dist-packages/checkbox_support/parsers/tests/fixtures/submission_info_lspci_standard_config.xml 
>>
>> /usr/share/mythtv/config.xml
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/bbc_config.xml 
>>
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/hulu_config.xml 
>>
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/mashups_config.xml 
>>
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/pbs_config.xml 
>>
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/rev3_config.xml 
>>
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/tedtalks_config.xml 
>>
>> /usr/share/mythtv/internetcontent/nv_python_libs/configs/XML/thewb_config.xml 
>>
>> mythuser at mythuser-ZBOX-ID84:~$ cat /etc/mythtv/config.xml
>> <Configuration>
>>   <Database>
>>     <PingHost>1</PingHost>
>>     <Host>192.168.0.105</Host>
>>     <UserName>mythtv</UserName>
>>     <Password>Tj4zOBwM</Password>
>>     <DatabaseName>mythconverg</DatabaseName>
>>     <Port>3306</Port>
>>   </Database>
>>   <WakeOnLAN>
>>     <Enabled>0</Enabled>
>>     <SQLReconnectWaitTime>0</SQLReconnectWaitTime>
>>     <SQLConnectRetry>5</SQLConnectRetry>
>>     <Command>echo 'WOLsqlServerCommand not set'</Command>
>>   </WakeOnLAN>
>> </Configuration>
>>
>> mythuser at mythuser-ZBOX-ID84:~$ cat /home/mythtv/.mythtv/config.xml
>> <Configuration>
>>   <Database>
>>     <PingHost>1</PingHost>
>>     <Host>192.168.0.105</Host>
>>     <UserName>mythtv</UserName>
>>     <Password>Tj4zOBwM</Password>
>>     <DatabaseName>mythconverg</DatabaseName>
>>     <Port>3306</Port>
>>   </Database>
>>   <WakeOnLAN>
>>     <Enabled>0</Enabled>
>>     <SQLReconnectWaitTime>0</SQLReconnectWaitTime>
>>     <SQLConnectRetry>5</SQLConnectRetry>
>>     <Command>echo 'WOLsqlServerCommand not set'</Command>
>>   </WakeOnLAN>
>> </Configuration>
>>
>>
>> But frontend still does not start.
>>
>> on the backend, I ran:
>> mythuser at amethi:/var/log/mythtv$ systemctl cat mythtv-backend.service
>> # /lib/systemd/system/mythtv-backend.service
>> [Unit]
>> Description=MythTV Backend
>> Documentation=https://www.mythtv.org/wiki/Mythbackend
>> After=mysqld.service network.target
>>
>> [Service]
>> User=mythtv
>> EnvironmentFile=-/etc/mythtv/additional.args
>> ExecStart=/usr/bin/mythbackend --quiet --syslog local7 $ADDITIONAL_ARGS
>> StartLimitBurst=10
>> StartLimitInterval=10m
>> Restart=on-failure
>> RestartSec=1
>>
>> [Install]
>> WantedBy=multi-user.target
>
> and the frontend log lines that might be important:
>
> Aug 31 11:41:20 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[18253]: N thread_unknown mythdirs.cpp:194 
> (InitializeMythDirs) Using configuration directory = 
> /home/mythuser/.mythtv
>
> I found no config.xml file in that directory.
> So I created one:
> mythuser at mythuser-ZBOX-ID84:~$ cat .mythtv/config.xml
> <Configuration>
>   <Database>
>     <PingHost>1</PingHost>
>     <Host>192.168.0.105</Host>
>     <UserName>mythtv</UserName>
>     <Password>Tj4zOBwM</Password>
>     <DatabaseName>mythconverg</DatabaseName>
>     <Port>3306</Port>
>   </Database>
>   <WakeOnLAN>
>     <Enabled>0</Enabled>
>     <SQLReconnectWaitTime>0</SQLReconnectWaitTime>
>     <SQLConnectRetry>5</SQLConnectRetry>
>     <Command>echo 'WOLsqlServerCommand not set'</Command>
>   </WakeOnLAN>
> </Configuration>
>
>
> and it still crashed:
>
>
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: N thread_unknown mythdirs.cpp:194 
> (InitializeMythDirs) Using configuration directory = 
> /home/mythuser/.mythtv
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: N CoreContext mythcontext.cpp:505 
> (LoadDatabaseSettings) Empty LocalHostName.
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: I CoreContext mythcontext.cpp:513 
> (LoadDatabaseSettings) Using localhost value of mythuser-ZBOX-ID84
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: E CoreContext mythdbcon.cpp:229 (OpenDatabase) 
> [DBManager0] Unable to connect to database!
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: E CoreContext mythdbcon.cpp:230 (OpenDatabase) 
> Driver error was [1/1045]:#012QMYSQL: Unable to connect#012Database 
> error was:#012Access denied for user 'mythtv'@'192.168.0.163' (using 
> password: YES)
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: E CoreContext mythdbcon.cpp:229 (OpenDatabase) 
> [DBManager0] Unable to connect to database!
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: E CoreContext mythdbcon.cpp:230 (OpenDatabase) 
> Driver error was [1/1045]:#012QMYSQL: Unable to connect#012Database 
> error was:#012Access denied for user 'mythtv'@'192.168.0.163' (using 
> password: YES)
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: I CoreContext mythcontext.cpp:694 
> (TestDBconnection) Testing network connectivity to '192.168.0.105'
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: E CoreContext mythdbcon.cpp:229 (OpenDatabase) 
> [DBManager1] Unable to connect to database!
> Aug 31 12:14:34 mythuser-ZBOX-ID84 mythfrontend.real: 
> mythfrontend[3437]: E CoreContext mythdbcon.cpp:230 (OpenDatabase) 
> Driver error was [1/1045]:#012QMYSQL: Unable to connect#012Database 
> error was:#012Access denied for user 'mythtv'@'192.168.0.163' (using 
> password: YES)

Another data point, I started a frontend on my desktop computer, and it 
connected to backend and played recordings.  So must be something wrong 
with Zotac frontend.  Any point in doing a purge uninstall and reinstall 
of that frontend?


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