Missing environment variables

[Gustavo Niemeyer]

If there's a recommendation, I'd suggest recommending the last known
stable, as the pace has been so fast that there are significant benefits of
running a more recent version.

We also have a mechanism snaps can use to declare the dependency on certain
aspects of snapd, but unfortunately the common dir had a couple of issues
until it finally worked smoothly.

We should really support a more explicit:

    assumes: [snapd2.15]

and leave the individual feature flags for aspects that can indeed vary
across environments.

On Oct 21, 2016 11:53 PM, "Aaron Ogle" <aaron.ogle at rocket.chat> wrote:

> Gustavo:
>
> I'll ask them next time to update snapd through apt and reinstall our snap
> and see what happens.
>
> Is there a fall back variable we can use for older versions?  Or a
> specific version of snap / snapd we should tell them they need?
>
> Thanks,
>
> On Fri, Oct 21, 2016, 20:41 Gustavo Niemeyer <gustavo.niemeyer at canonical.
> com> wrote:
>
>> Hey Aaron,
>>
>> The most likely cause is, as you suspected, an out of date snapd.
>> SNAP_COMMON was introduced some time after 16.04 (don't have exact version
>> at hand right now).
>>
>> With recent versions of snapd, the running infrastructure was
>> significantly improved and simplified compared to 16.04 pristine, so it
>> seems less likely to be a problem if up-to-date.
>>
>> Please let us know if you find any other hints.
>>
>> Gustavo
>>
>> On Oct 21, 2016 11:39 AM, "Aaron Ogle" <aaron.ogle at rocket.chat> wrote:
>>
>> Didier:
>>
>> Like I said its only happened to a few people, never had it personally.
>> One upgraded to 16.10 and it went away(got impatient 😀 I think).  Is there
>> some piece of information I could get from them that might assist in the
>> reproduction of the issue?
>>
>> On Fri, Oct 21, 2016, 04:19 Didier Roche <didrocks at ubuntu.com> wrote:
>>
>> Le 20/10/2016 à 17:36, Aaron Ogle a écrit :
>>
>> Hey guys,
>>
>>
>> Hey Aaron,
>>
>>
>> With our Rocket.Chat server snap. We've had several cases now where users
>> come to us trying to figure out why it hasn't started yet after installing.
>>
>> Our snap: https://github.com/RocketChat/Rocket.Chat/blob/develop/.
>> snapcraft/stable/snapcraft.yaml
>>
>> rocketchat-mongo:
>> command: env LC_ALL=C mongod --smallfiles --dbpath=$SNAP_COMMON
>>
>>
>> This is correct, and the generated wrapper (just checked, downloaded it
>> from the store) is doing:
>> exec "env" LC_ALL=C mongod --smallfiles --dbpath=$SNAP_COMMON "$@"
>>
>>
>>
>> After explaining to them how to get logs, it will say our mongo install
>> is missing the dbpath.
>>
>> The exact error they are getting:
>> Error parsing command line: the argument for option '--dbpath' should
>> follow immediately after the equal sign
>>
>> This seems like for some reason SNAP_COMMON isn't getting set.
>>
>> I've confirmed that they are using version 2.15 of snap / snapd.
>>
>> I also asked them to drop into the snap: sudo snap run --shell
>> rocketchat-server
>>
>> Then do an: env to see if SNAP_COMMON is even set. From there it does
>> seem to be set.
>>
>> Is it the case as well for you? I just tried this and:
>>
>> didrocks at tidus:~$ sudo snap run --shell rocketchat-server
>> root at tidus:/home/didrocks# env | grep SNAP_COMMON
>> SNAP_COMMON=/var/snap/rocketchat-server/common
>>
>> So, it's set for me, CCing Zyga who might have an idea if there are some
>> cases where snap-confine doesn't set those variables…
>>
>> Cheers,
>> Didier
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>>
>> --
>>
>> *Aaron Ogle* Core Developer
>>
>> aaron.ogle at rocket.chat
>>
>> @aaron.ogle
>>
>> https://rocket.chat
>>
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>>
>> --
>
> *Aaron Ogle* Core Developer
>
> aaron.ogle at rocket.chat
>
> @aaron.ogle <https://demo.rocket.chat/direct/aaron.ogle>
>
> https://rocket.chat
>
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