[Catalyst] Keep Plack -r working when commandline closed...?

Tue Oct 27 14:55:32 GMT 2015

If all  you want is to start a process and leave, then huponexit and/or
nohup+background are fine.
If you want to start a process (event in the foreground) and leave it
running while you detatch, and come back later to the same session, then
tmux is the way to go.

You can learn enough tmux to be dangerous in ten minutes.  The only
features of ti that i use are window splitting, session detach, and session
attach.

On Tue, Oct 27, 2015 at 5:25 AM, Kieren Diment <diment at gmail.com> wrote:

> I would say having HUPONEXIT false would be the more exotic feature set in
> this case.  tmux is actually a very good low rent low traffic short
> lifespan application deployment strategy ;).
>
> On Tue, Oct 27, 2015 at 6:21 PM, Octavian Rasnita <orasnita at gmail.com>
> wrote:
>
>> Thanks. The conclusion is that if huponexit is set to false we can simply
>> run processes in background appending & at the end of the command line.
>> So we don't need tmux nor screen unless we need other features offered by
>> them.
>>
>> --Octavian
>>
>> ----- Original Message -----
>> *From:* Lasse Makholm <lasse at unity3d.com>
>> *To:* The elegant MVC web framework <catalyst at lists.scsys.co.uk>
>> *Sent:* Monday, October 26, 2015 11:37 PM
>> *Subject:* Re: [Catalyst] Keep Plack -r working when commandline
>> closed...?
>>
>>
>>
>> On Mon, Oct 26, 2015 at 9:55 AM, Octavian Rasnita <orasnita at gmail.com>
>> wrote:
>>
>>> When I connect to Linux servers using SSH and run the programs using
>>> perl program.pl > something.log 2>&1 &
>>> then I can use the command exit to close the SSH console but the program
>>> continues to run.
>>> I remember that in past I needed to use nohup, but in last years I
>>> didn't need it anymore.
>>>
>>> Is the SSH connection a special case but it doesn't work when using a
>>> real bash console directly?
>>>
>>
>> Sounds like the huponexit is not set in your shell:
>>
>> http://stackoverflow.com/questions/21294283/when-did-hup-stop-getting-sent-and-what-can-i-do-about-it
>>
>> /L
>>
>>
>>>
>>> --Octavian
>>>
>>> ----- Original Message -----
>>> *From:* Len Jaffe <lenjaffe at jaffesystems.com>
>>> *To:* kieren at diment.org ; The elegant MVC web framework
>>> <catalyst at lists.scsys.co.uk>
>>> *Sent:* Monday, October 26, 2015 5:13 AM
>>> *Subject:* Re: [Catalyst] Keep Plack -r working when commandline
>>> closed...?
>>>
>>> & just backgrounds a job. If you close the terminal, you lose job
>>> control.
>>> If you use tmux, you can close the terminal, but leave the session
>>> running, and reattach to the session later.
>>>
>>> It is well work looking into.
>>>
>>> On Sat, Oct 24, 2015 at 1:29 AM, Kieren Diment <diment at gmail.com> wrote:
>>>
>>>> Tmux is the poor man's deployment pathway ;).  I use it to keep long
>>>> running jobs going between logins a lot too, as well as for having an
>>>> editor in the right place from where I last left off.  All round a primo
>>>> useful tool.  Also handy for persistent IRC connections etc.
>>>>
>>>> On Sat, Oct 24, 2015 at 3:24 PM, Andrew <
>>>> catalystgroup at unitedgames.co.uk> wrote:
>>>>
>>>>> A further search online,
>>>>> throws up that screen and tmux can be useful if the app you want to
>>>>> run in the background needs input now and again.
>>>>>
>>>>>
>>>>> ----- Original Message -----
>>>>> *From:* Andrew <catalystgroup at unitedgames.co.uk>
>>>>> *To:* The elegant MVC web framework <catalyst at lists.scsys.co.uk>
>>>>> *Sent:* Saturday, October 24, 2015 5:06 AM
>>>>> *Subject:* Re: [Catalyst] Keep Plack -r working when commandline
>>>>> closed...?
>>>>>
>>>>>
>>>>> Why is it better to use these over using an "&"....?
>>>>>
>>>>> Or are you simply recommending them generally, due to their usefulness
>>>>> all round?
>>>>>
>>>>> Yours,
>>>>> Andrew.
>>>>>
>>>>>
>>>>> ----- Original Message -----
>>>>> *From:* Kieren Diment <diment at gmail.com>
>>>>> *To:* The elegant MVC web framework <catalyst at lists.scsys.co.uk>
>>>>> *Sent:* Friday, October 23, 2015 10:48 PM
>>>>> *Subject:* Re: [Catalyst] Keep Plack -r working when commandline
>>>>> closed...?
>>>>>
>>>>> Tmux is generally newer and easier to use than screen, highly
>>>>> recommended.
>>>>>
>>>>> On Sat, Oct 24, 2015 at 7:41 AM, Len Jaffe <lenjaffe at jaffesystems.com>
>>>>> wrote:
>>>>>
>>>>>> I'd still consider using screen or tmux...
>>>>>>
>>>>>> On Fri, Oct 23, 2015 at 1:48 PM, Andrew <
>>>>>> catalystgroup at unitedgames.co.uk> wrote:
>>>>>>
>>>>>>> Turns out it's super easy to run it in the background, =).
>>>>>>>
>>>>>>> You just add "&" to the end of the commandline, =D.
>>>>>>>
>>>>>>> ^_^ Am learning these little server tricks, ;-).
>>>>>>>
>>>>>>> [Tweeted Tatsuhiko Miyagawa of Plack fame, who was kind enough to
>>>>>>> promptly
>>>>>>> respond, with this little gem, =D. Yay!]
>>>>>>>
>>>>>>> Yours,
>>>>>>> Andrew.
>>>>>>>
>>>>>>>
>>>>>>> ----- Original Message -----
>>>>>>> From: "Trevor Leffler" <tleffler at uw.edu>
>>>>>>> To: "The elegant MVC web framework" <catalyst at lists.scsys.co.uk>
>>>>>>> Sent: Friday, October 23, 2015 4:28 PM
>>>>>>> Subject: Re: [Catalyst] Keep Plack -r working when commandline
>>>>>>> closed...?
>>>>>>>
>>>>>>>
>>>>>>> What about wrapping your shell session with screen?
>>>>>>>
>>>>>>> $ man screen
>>>>>>>
>>>>>>> --Trevor
>>>>>>>
>>>>>>> On 10/23/2015 08:21 AM, Andrew wrote:
>>>>>>> >
>>>>>>> > I've ended up using Plackup to start the catalyst app's psgi
>>>>>>> script (still
>>>>>>> > via fast cgi),
>>>>>>> > and I'm using -r to indicate it should watch for changes, and
>>>>>>> reload the
>>>>>>> > server when changes are detected.
>>>>>>> >
>>>>>>> > It does this fine, as long as my commandline terminal is still
>>>>>>> open.
>>>>>>> > The moment I close it, the server continues to run, yet any
>>>>>>> watching for
>>>>>>> > changes, killing, and restarting no longer happens (as far as I
>>>>>>> can tell).
>>>>>>> >
>>>>>>> > Is there any way to get Plack's scripts that watch and reload (i.e.
>>>>>>> > Restarter.pm, etc), to continue to run after I close OSX's
>>>>>>> terminal window
>>>>>>> /
>>>>>>> > end the SSH session?
>>>>>>> >
>>>>>>> >
>>>>>>> > Many thanks for any insights offered,
>>>>>>> >
>>>>>>> > Yours,
>>>>>>> > Andrew.
>>>>>>> >
>>>>>>> >
>>>>>>> > _______________________________________________
>>>>>>> > List: Catalyst at lists.scsys.co.uk
>>>>>>> > Listinfo:
>>>>>>> http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>>>>> > Searchable archive:
>>>>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>>>>> > Dev site: http://dev.catalyst.perl.org/
>>>>>>> >
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> List: Catalyst at lists.scsys.co.uk
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>>>>>>> Searchable archive:
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>>>>>>> Dev site: http://dev.catalyst.perl.org/
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> List: Catalyst at lists.scsys.co.uk
>>>>>>> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>>>>> Searchable archive:
>>>>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>>>>> Dev site: http://dev.catalyst.perl.org/
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Len Jaffe - Information Technology Smoke Jumper -
>>>>>> lenjaffe at jaffesystems.com
>>>>>> 614-404-4214    @LenJaffe <https://www.twitter.com/lenJaffe>
>>>>>> www.lenjaffe.com
>>>>>> Host of Code Jam Columbus <http://www.meetup.com/techlifecolumbus/>
>>>>>> - @CodeJamCMH <https://www.twitter.com/CodeJamCMH>
>>>>>> Curator of Advent Planet <http://www.lenjaffe.com/AdventPlanet/> -
>>>>>> An Aggregation of Online Advent Calendars.
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> List: Catalyst at lists.scsys.co.uk
>>>>>> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>>>> Searchable archive:
>>>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>>>> Dev site: http://dev.catalyst.perl.org/
>>>>>>
>>>>>>
>>>>> ------------------------------
>>>>>
>>>>> _______________________________________________
>>>>> List: Catalyst at lists.scsys.co.uk
>>>>> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>>> Searchable archive:
>>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>>> Dev site: http://dev.catalyst.perl.org/
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> _______________________________________________
>>>>> List: Catalyst at lists.scsys.co.uk
>>>>> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>>> Searchable archive:
>>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>>> Dev site: http://dev.catalyst.perl.org/
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> List: Catalyst at lists.scsys.co.uk
>>>>> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>>> Searchable archive:
>>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>>> Dev site: http://dev.catalyst.perl.org/
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> List: Catalyst at lists.scsys.co.uk
>>>> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
>>>> Searchable archive:
>>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>>> Dev site: http://dev.catalyst.perl.org/
>>>>
>>>>
>>>
>>>
>>> --
>>> Len Jaffe - Information Technology Smoke Jumper -
>>> lenjaffe at jaffesystems.com
>>> 614-404-4214    @LenJaffe <https://www.twitter.com/lenJaffe>
>>> www.lenjaffe.com
>>> Host of Code Jam Columbus <http://www.meetup.com/techlifecolumbus/>  -
>>> @CodeJamCMH <https://www.twitter.com/CodeJamCMH>
>>> Curator of Advent Planet <http://www.lenjaffe.com/AdventPlanet/> - An
>>> Aggregation of Online Advent Calendars.
>>>
>>> ------------------------------
>>>
>>> _______________________________________________
>>> List: Catalyst at lists.scsys.co.uk
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>>> Searchable archive:
>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>> Dev site: http://dev.catalyst.perl.org/
>>>
>>>
>>> _______________________________________________
>>> List: Catalyst at lists.scsys.co.uk
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>>> Searchable archive:
>>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>>> Dev site: http://dev.catalyst.perl.org/
>>>
>>>
>> ------------------------------
>>
>> _______________________________________________
>> List: Catalyst at lists.scsys.co.uk
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>> Searchable archive:
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>> Dev site: http://dev.catalyst.perl.org/
>>
>>
>> _______________________________________________
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>> Searchable archive:
>> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
>> Dev site: http://dev.catalyst.perl.org/
>>
>>
>
> _______________________________________________
> List: Catalyst at lists.scsys.co.uk
> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
> Searchable archive:
> http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
> Dev site: http://dev.catalyst.perl.org/
>
>

-- 
Len Jaffe - Information Technology Smoke Jumper - lenjaffe at jaffesystems.com
614-404-4214    @LenJaffe <https://www.twitter.com/lenJaffe>
www.lenjaffe.com
Host of Code Jam Columbus <http://www.meetup.com/techlifecolumbus/>  -
@CodeJamCMH <https://www.twitter.com/CodeJamCMH>
Curator of Advent Planet <http://www.lenjaffe.com/AdventPlanet/> - An
Aggregation of Online Advent Calendars.
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