[mythtv-users] Brand new install - Mythbackend doesn't start
Stephen Worthington
stephen_agent at jsw.gen.nz
Wed Aug 2 07:25:27 UTC 2017
On Wed, 2 Aug 2017 01:03:17 -0500, you wrote:
>On Tue, Aug 1, 2017 at 11:10 PM, Mark Perkins <perkins1724 at hotmail.com>
>wrote:
>
>> On 2 August 2017 1:17:13 pm Ashu Desai <ashu.desai at gmail.com> wrote:
>>
>> > On Tue, Aug 1, 2017 at 8:45 PM, Hika van den Hoven <hikavdh at gmail.com>
>> > wrote:
>> >
>> >> Did you check on mysql/mariadb responding to the external ip (check
>> >> the wiki on how to do this.
>> >>
>> >> The frontend/backend are on the same box - and there isn't any external
>> > IP. i am testing everything all from home network.
>> > Here's what I did find though:
>> >
>> > ---------------
>> > Aug 1 22:27:32 mythmaster systemd: Started MythTV backend service.
>> > Aug 1 22:27:32 mythmaster systemd: Starting MythTV backend service...
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.824647 C
>> > mythbackend version: fixes/0.28 [v28.0-35-g812ec08] www.mythtv.org
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.824669 C Qt
>> > version: compile: 5.6.1, runtime: 5.6.1
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.824671 N
>> > Enabled verbose msgs: general
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.824938 N
>> > Setting Log Level to LOG_INFO
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.837289 I
>> Added
>> > logging to the console
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838125 I
>> Setup
>> > Interrupt handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838131 I
>> Setup
>> > Terminated handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838136 I
>> Setup
>> > Segmentation fault handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838138 I
>> Setup
>> > Aborted handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838142 I
>> Setup
>> > Bus error handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838150 I
>> Setup
>> > Floating point exception handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838152 I
>> Setup
>> > Illegal instruction handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838160 I
>> Setup
>> > Real-time signal 0 handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838165 I
>> Setup
>> > Hangup handler
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838198 N
>> Read
>> > conf dir = /etc/mythtv
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838229 N
>> Using
>> > runtime prefix = /usr
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838231 N
>> Using
>> > configuration directory = /etc/mythtv
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838288 I
>> > Assumed character encoding: en_US.UTF-8
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838604 E
>> Error
>> > parsing: /etc/mythtv/config.xml at line: 1 column: 1
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838607 E
>> Error
>> > Msg: unexpected end of file
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838666 E
>> > DBHostName is not set in config.xml
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838674 E
>> > DBHostName is not set in config.xml
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838687 N
>> Empty
>> > LocalHostName.
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.838693 I
>> Using
>> > localhost value of mythmaster.localdomain
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.848276 N
>> > Setting QT default locale to en_US
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.848287 I
>> > Current locale en_US
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.848497 N
>> > Reading locale defaults from /usr/share/mythtv//locales/en_us.xml
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.852404 I
>> > Loading en_us translation for module mythfrontend
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.858057 I
>> > Current MythTV Schema Version (DBSchemaVer): 1344
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.858296 I
>> > Loading en_us translation for module mythfrontend
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.860040 N
>> > MythBackend: Starting up as the master server.
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.860795 W
>> > MythBackend: No valid capture cards are defined in the database.
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.861100 E
>> > Scheduler: No capture cards are defined in the database.
>> > Aug 1 22:27:32 mythmaster mythbackend: Perhaps you should re-read the
>> > installation instructions?
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.861186 E
>> Error
>> > parsing: /etc/mythtv/config.xml at line: 1 column: 1
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.861188 E
>> Error
>> > Msg: unexpected end of file
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.940295 I
>> Added
>> > logging to /var/log/mythtv/mythbackend.20170802032732.23638.log
>> > Aug 1 22:27:32 mythmaster mythbackend: 2017-08-01 22:27:32.945104 I
>> > Removed logging to /var/log/mythtv/mythbackend.20170802032732.23638.log
>> > Aug 1 22:27:32 mythmaster systemd: mythbackend.service: main process
>> > exited, code=exited, status=1/FAILURE
>> > Aug 1 22:27:32 mythmaster systemd: Unit mythbackend.service entered
>> failed
>> > state.
>> > Aug 1 22:27:32 mythmaster systemd: mythbackend.service failed.
>> >
>> > --------------
>> >
>> > I am running this as root - so i thought the dir should show
>> /root/.mythtv/
>> > Looking at the dir, there is no "config.xml" under /etc/mythtv
>> >
>> > Maybe because I never ran this as anything but root?
>> >
>> >
>> > [root at mythmaster ~]# ls -ahl /etc/mythtv/
>> > total 32K
>> > drwxr-xr-x. 6 mythtv mythtv 4.0K Aug 1 22:27 .
>> > drwxr-xr-x. 140 root root 12K Aug 1 22:23 ..
>> > drwxr-xr-x. 2 mythtv mythtv 4.0K Aug 1 20:00 3rdParty
>> > drwxr-xr-x. 2 mythtv mythtv 4.0K Aug 1 20:00 channels
>> > -rw-r--r--. 1 mythtv mythtv 0 Aug 1 22:27 config.xml
>> > drwxr-xr-x. 2 mythtv mythtv 4.0K Aug 1 20:00 themes
>> > drwxr-xr-x. 3 mythtv mythtv 4.0K Aug 1 20:00 tmp
>> >
>> > I looked into the config file - it was empty. So i created a link (ln -s)
>> > from /root/.mythtv/config.xml to /etc/mythtv
>> >
>> > That didn't work either.
>> >
>> >
>> >> Also, try to bottom post, this to keep the thread readable for future
>> >> readers. Check the etiquettes.
>> >>
>> >>
>> > Apologies.
>> >
>> >> _______________________________________________
>> >> mythtv-users mailing list
>> >> mythtv-users at mythtv.org
>> >> http://lists.mythtv.org/mailman/listinfo/mythtv-users
>> >> http://wiki.mythtv.org/Mailing_List_etiquette
>> >> MythTV Forums: https://forum.mythtv.org
>> >>
>> >
>> >
>> >
>> > ----------
>> > _______________________________________________
>> > mythtv-users mailing list
>> > mythtv-users at mythtv.org
>> > http://lists.mythtv.org/mailman/listinfo/mythtv-users
>> > http://wiki.mythtv.org/Mailing_List_etiquette
>> > MythTV Forums: https://forum.mythtv.org
>> >
>>
>> Are you sure the BE is running as root? Are you using systemd? What is in
>> your service file?
>>
>
>Sorry - sent email to Mark by accident:
>
>Systemd? Yes
>
>[root at mythmaster ~]# pstree -p | grep system
>systemd(1)-+-ModemManager(578)-+-{ModemManager}(604)
> |-systemd-journal(366)
> |-systemd-logind(584)
> |-systemd-udevd(397)
>
>
>Not sure how to find out if BE is running as root. If you mean under the
>mythbackend.service file - ( vi /usr/lib/systemd/system/mythbackend.service)
>-- then I tried both here:
># systemd changes execution from the calling user (possibly root) to this
>user
># if you have permissions problems or obscure errors try logging in as
>mythtv
>User=mythtv
>#User=root
>
>I had commented out "user=mythtv" and put root instead - but that didn't
>change anything.
>
>What's in it - what was default i believe:
>
>[Unit]
>Description=MythTV backend service
>After=network-online.target mariadb.service mysqld.service time-sync.target
># Uncomment the following line if you will be using the mythweb plugin on
>the
># same system as mythbackend.
>#Wants=httpd.service
>
>[Service]
># Type=simple is recommended. If using Type=forking you will need to
>specify a
># pidfile so systemd knows how to find the forked process PID, otherwise it
># presumes that the process being started will be the remaining process.
>#Type=forking
>Type=simple
>Environment=MYTHCONFDIR=/etc/mythtv
>
># systemd changes execution from the calling user (possibly root) to this
>user
># if you have permissions problems or obscure errors try logging in as
>mythtv
>User=mythtv
>#User=root
># Uncomment one of the following...
># Use sysloging rather than separate logging:
>#ExecStart=/usr/bin/mythbackend --syslog local7
># If Type=forking is set you must specify the --daemon and --pidfile
>options:
>#ExecStart=/usr/bin/mythbackend --daemon --logpath /var/log/mythtv
>--loglevel crit --pidfile /run/mythbackend.pid
># Default setting for Type=simple.
>ExecStart=/usr/bin/mythbackend --logpath /var/log/mythtv
>
>[Install]
>WantedBy=multi-user.target
>
>--------------------------------
>
>Also noticed that since the path is /etc/mythtv (not /root/.mythtv)
>the permissions are:
>[root at mythmaster ~]# ls -ahl /etc/mythtv
>total 36K
>drwxr-xr-x. 6 mythtv mythtv 4.0K Aug 1 22:44 .
>drwxr-xr-x. 140 root root 12K Aug 1 22:23 ..
>drwxr-xr-x. 2 mythtv mythtv 4.0K Aug 1 20:00 3rdParty
>drwxr-xr-x. 2 mythtv mythtv 4.0K Aug 1 20:00 channels
>-rw-r--r--. 1 mythtv mythtv 513 Aug 1 22:44 config.xml
>-rw-r--r--. 1 root root 0 Aug 1 22:43 config.xml.old
>drwxr-xr-x. 2 mythtv mythtv 4.0K Aug 1 20:00 themes
>drwxr-xr-x. 3 mythtv mythtv 4.0K Aug 1 20:00 tmp
>
>
>Wondering if there is a need to change either the path or permissions?
The normal way to run mythbackend is to have it run as the mythtv
user. I have never run it as root, but it may not be intended to run
that way and it could cause complications. You do have to have a
mythtv user on the system for that to work, but it does not have to be
a login enabled user. The default is to also have a mythtv group (to
which the mythtv user and any user that runs mythfrontend must
belong). Then you put all the things that mythbackend needs in the
/home/mythtv/.mythtv directory, such as config.xml and the channels
directory with all the channel icon files. If you want to have just
one config.xml file, then you can put that in /etc/mythtv and ln -s to
it from all the /home/<username>/.mythtv directories.
This is what a good config.xml file looks like (copied from my test PC
which was installed as a 0.28 system a few months ago):
<Configuration>
<Database>
<PingHost>1</PingHost>
<Host>10.0.2.12</Host>
<UserName>mythtv</UserName>
<Password>********</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>
There are some other things that can be added to the config.xml file
by mythfrontend, but those settings are what is wanted by mythbackend.
Fill in the correct names, addresses and password for your system. You
may or may not need the pinghost option set on - I have it on because
I am connecting via the external IP address for the PC, not localhost,
so I do not want mythbackend to try to connect until that address is
pingable.
There are different older formats for config.xml that also seem to
still work, but I believe the above is the current format.
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