[mythtv-users] how to get slaves to automatically reconnect to the master backend

[Peter Abplanalp]

On Thu, Aug 20, 2009 at 8:33 AM, Tom Lichti<redpepperracing at gmail.com> wrote:
> On Thu, Aug 20, 2009 at 10:28 AM, Peter
> Abplanalp<pta-myth at psaconsultants.com> wrote:
>> On Thu, Aug 20, 2009 at 8:14 AM, Tom Lichti<redpepperracing at gmail.com> wrote:
>>> On Thu, Aug 20, 2009 at 9:58 AM, Peter
>>> Abplanalp<pta-myth at psaconsultants.com> wrote:
>>>> On Thu, Aug 20, 2009 at 7:37 AM, Tom Lichti<redpepperracing at gmail.com> wrote:
>>>>> On Thu, Aug 20, 2009 at 9:33 AM, Peter
>>>>> Abplanalp<pta-myth at psaconsultants.com> wrote:
>>>>>> i am having an issue with my master backend rebooting for no apparent
>>>>>> reason.  i also have 3 slave backends with tuners.  the problem i have
>>>>>> is that when the master phantom reboots, all the slaves get knocked
>>>>>> off and i end up with a system that has only 1 tuner.  this leads to
>>>>>> recordings not being made due to lack of tuners.  i am trying to
>>>>>> figure out why the master phantom reboots but until i do, is there a
>>>>>> way to get the slaves to reconnect to the master automatically?
>>>>>>
>>>>>
>>>>> My single slave auto-reconnects when the master becomes available. If
>>>>> the slave mythbackend process crashes at the same time as the master,
>>>>> then you will have problems. Is that what is happening in your case?
>>>>
>>>> no, i'm not.  the slave logs show nothing untoward and the slave
>>>> processes are alive and well.  i'm glad to hear that this just works
>>>> for you.  did you configure anything on the master or slave to get
>>>> this to work?
>>>
>>> Not that I recall. I think there is a timeout at some point, but I'm
>>> not sure on that. If you gracefully shut down the backend and then
>>> restart it in a few minutes, do the slaves reconnect?
>>
>> i ran a test and stopped the master backend.  i got a bunch of lines
>> like the following on one slave:
>>
>> 2009-08-20 08:18:23.830 Connecting to master server: 192.168.1.104:6543
>> 2009-08-20 08:18:23.846 Connection to master server timed out.
>>
>> once i started the backend again, i got a 'connected successfully'
>> message.  i also checked the status page on mythweb and it reported
>> that all the tuners on all the backends were available so it would
>> seem that upon graceful shutdown and startup the slaves to reconnect.
>> i also ran 'kill -9 <mythbackend pid>' to try and simulate a crash.
>> in that case, the slaves also reconnected to the master.
>>
>> i wonder if there is any way to get the slaves to reconnect after a
>> reboot or what the difference is in that case.
>
> When the master reboots spontaneously, the slaves probably still have
> a socket open to what they think is the master, and when the master
> actually comes back up, the slaves don't know, because they think they
> are still connected to the master. Not sure how to get around that
> without some scripting.

i think you are probably correct, any ideas on how i might script that?

> Of course, fixing the spontaneous reboot issue on the master would be
> the best way... :)

i'm trying, i'm trying!!! :-)

-peter