sane way of cleaning up stale unix sockets?

[Александр Поволоцкий]

Thanks; I just wanted to be sure I didn't overlook anything

--

Alex

On 08.01.2021 16:23, Valentin V. Bartenev wrote:
> No major obstacles, it just waits someone to rewrite the related code.
>
> --
> Valentin
>
>
> On Tuesday, 5 January 2021 19:19:39 MSK Александр Поволоцкий wrote:
>> Hello
>>
>> Why nxt_listen_socket_create is not used to create sockets other than
>> control? Any positive reason or "still no time to rewrite?"
>>
>> --
>>
>> Alex
>>
>> On 22.12.2020 17:40, Valentin V. Bartenev wrote:
>>> Actually we thought about a connection test with the algorithm of atomic
>>> creation of such sockets, that was implemented earlier this year for the
>>> control socket: https://hg.nginx.org/unit/rev/0a8840921fd0
>>>
>>> --
>>> Valentin
>>>
>>>
>>>
>>> On Tuesday, 22 December 2020 17:14:15 MSK Александр Поволоцкий wrote:
>>>> Maybe just https://gavv.github.io/articles/unix-socket-reuse/ ?
>>>>
>>>> On 22.12.2020 17:12, Valentin V. Bartenev wrote:
>>>>> On Saturday, 19 December 2020 18:48:02 MSK Александр Поволоцкий wrote:
>>>>>> Hello
>>>>>>
>>>>>> Sometimes unitd leaves behind orphaned unix sockets (well, just
>>>>>> configure it to use some and kill -9!)
>>>>>>
>>>>>> On next start, unitd fails to start because of existing sockets.
>>>>>>
>>>>>> Is there a sane way to clean up them on start? keeping separate list of
>>>>>> sockets-to-remove is a clear way to insainty.
>>>>> [..]
>>>>>
>>>>> Hello,
>>>>>
>>>>> Indeed, this is a problem.  That's the reason why the usage of unix sockets
>>>>> in listeners is still undocumented.
>>>>>
>>>>> It's not so easy to fix, because we need to avoid the situation when the socket
>>>>> is used by some other processes and avoid any possible race conditions
>>>>> here.
>>>>>
>>>>> Actually, until it will be fixed I have no better idea than put them all in the
>>>>> same dedicated directory and just clean up everything in it each restart.
>>>>>
>>>>>      wbr, Valentin V. Bartenev
>>>>>
>>>>>
>>>>>
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