[mythtv-users] Installation instructions for mythbuntu 16.04.1

[Hika van den Hoven]

Hoi Jay,

Friday, December 16, 2016, 7:10:24 PM, you wrote:

> On 12/16/2016 10:02 AM, Hika van den Hoven wrote:
>> Hoi Jay,
>>
>> Friday, December 16, 2016, 6:14:44 PM, you wrote:
>>
>>> On 12/16/2016 9:02 AM, Hika van den Hoven wrote:
>>>> Hoi Jay,
>>>>
>>>> Friday, December 16, 2016, 5:52:40 PM, you wrote:
>>>>
>>>>> On 12/16/2016 8:20 AM, Hika van den Hoven wrote:
>>>>>> Good job! Jim and Philip! :-)
>>>>>>
>>>>>> _______________________________________________
>>>>>> 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
>>>>>>
>>>>> I'm still running mythbuntu 14.04 LTS, and have no need to upgrade to
>>>>> 16.04 at this time.  There will come a time when I will need to, so I
>>>>> could use some clarification about the changes to systemd.
>>>>> I have several HDHomeRun tuners, so I need to make mythtv-backend wait
>>>>> until they are ready.  However, the proposed changes to wait for the
>>>>> network to be up seem insufficient to me.  It is not the network that
>>>>> mythtv-backend needs to wait for, but the HDHomeRun tuners.  The tuners
>>>>> require an IP address, obtained via DHCP, so it seems that
>>>>> mythtv-backend really needs to wait for the HDHomeRun tuners to get
>>>>> their IP addresses, which is hard to determine, or at least until the
>>>>> DHCP server is running.
>>>>> I remember on my old 0.21 version, I added an HDHomeRun startup script
>>>>> that waited until it could access the HDHomeRun tuners, and changed the
>>>>> mythtv-backend startup order to after that to accomplish the wait.  I
>>>>> have no idea what 14.04 (0.27) is doing here, but moving on to 16.04
>>>>> (0.28, systemd), seems like something more is needed.
>>>>> Jay
>>>>> _______________________________________________
>>>> I have a ping loop in my mythbackend start script:
>>>>
>>>>           IsAwake=`ping -q -c1 192.168.223.20 | grep received | cut -f4 -d' '`
>>>>           while [ "$IsAwake" == "0" ]; do
>>>>                   einfo "Waiting for the HD homerun to apear"
>>>>                   sleep 1
>>>>                   IsAwake=`ping -q -c1 192.168.223.20 | grep received | cut -f4 -d' '`
>>>>           done
>>>>
>>>> The einfo is I think Gentoo specific, but you can replace it with echo
>>>>
>>>>
>>>>
>>>> Tot mails,
>>>>     Hika                            mailto:hikavdh at gmail.com
>>>>
>>>> "Zonder hoop kun je niet leven
>>>> Zonder leven is er geen hoop
>>>> Het eeuwige dilemma
>>>> Zeker als je hoop moet vernietigen om te kunnen overleven!"
>>>>
>>>> De lerende Mens
>>>>
>>>>
>>> Yes, I remember doing something like that in my old HDHomeRun init
>>> script (0.21).  So if this gets added to the mythtvbackend start script
>>> on 16.04, do you need to make any of the mentioned systemd changes?
>>> Jay
>> I don't know if you can use it this way with systemd. Me and systemd
>> do not like each other and I will stay with openrc. Any of the sytemd
>> gurus has to see if this can be added/adapted to the systemd
>> 'startscript'.
>> But anyway this approach will implicitly also wait till the network is
>> fully up as else no ping reply will be received. So the other wait
>> solutions are no longer needed.
> Yes, this is what I was trying to understand better for the systemd 
> startup - it is NOT the network that mythtv-backend needs to wait for,
> but rather the HDHomeRun tuners, which require more than just the 
> network (i.e., DHCP server, IP addresses).

Not exactly true. The network needs to be up also as else the backend
will only bind to localhost and won't bind to the external ip address
making it inaccessible for external frontends.

The same might also apply to mysql.

>> You DO need to give your HD Homerun a static address on your router or
>> it might change over time!
> The MythTV backend is the DHCP server for the HDHomeRuns and does have
> IP address reservations (static addresses) for them.  I also have host
> names for them defined in /etc/hosts for convenience.  My HDHomeRun 
> tuners are on a dedicated LAN (separate NIC card).

> Jay



Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens