[mythtv-users] Installation instructions for mythbuntu 16.04.1

[Jay Foster]

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! :-)
>>>>>
>>>>> _______________________________________________
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>>>>> 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).

> 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
>
>