Cannot install snap apps from store

[Michael Nelson]

On Fri, Dec 9, 2016 at 5:39 PM Manik Taneja <manik.taneja at canonical.com>
wrote:

> On Dec 8, 2016, at 8:21 PM, Oliver Ries <oliver.ries at canonical.com> wrote:
>
> Hi
>
> On Thu, Dec 8, 2016 at 6:31 PM, XiaoGuo Liu <xiaoguo.liu at canonical.com>
> wrote:
>
> Hi,
>
> I do not know how many of you have met the issue. When I try to install an
> app from the store, it comes me an error like:
>
> liuxg at ubuntu:~$ sudo snap install tensorflow-demo --devmode --beta
> error: cannot install "tensorflow-demo": Get
> https://search.apps.ubuntu.com/api/v1/snaps/details/tensorflow-demo?channel=beta:
> net/http: request canceled while waiting for connection (Client.Timeout
> exceeded while awaiting headers)
> liuxg at ubuntu:~$ sudo snap install tensorflow-demo --devmode --beta
> error: cannot install "tensorflow-demo": Get
> https://search.apps.ubuntu.com/api/v1/snaps/details/tensorflow-demo?channel=beta:
> net/http: request canceled while waiting for connection (Client.Timeout
> exceeded while awaiting headers)
>
> This has been usually because of CDN issues afaik. The store team should
> able to confirm shortly.
>

In this case, it's an issue just with the initial connection from the
client to search.apps.ubuntu.com, before following any CDN url to download
the snap. I also tried to reproduce around 40mins after XiaoGuo and
couldn't.

After trying to reproduce, I checked the apache logs for
search.apps.ubuntu.com and saw that during that time it only ever saw
requests which resulted in 200 replies:

http://paste.ubuntu.com/23602216/

There were no relevant errors in the error log that I could see, nor does
our monitoring show any high load at the time, so unless apache isn't
logging timeouts, I suspect the requests weren't getting through to
search.apps.ubuntu.com for some network-related reason, but I'm keen for
someone else on the store team to check the networking and logs.

We have seen this before intermittently, so please if you see a client
timeout as above, add your data to:

https://bugs.launchpad.net/click-package-index/+bug/1639981

and we'll keep digging.

Thanks!
-Michael


> Can you check status.snapcraft.io to see any outages around the date you
> experienced this?
>
>
> I just did a quick test on my classic Ubuntu (AMD64) and was able to
> download & install the snap just fine.
>
>
> In fact, I have met this this problem a number of times, and sometimes it
> works fine. Also, my colleague said to me that he gets the same issue
> sometimes. What is the root cause for this?
>
>
> it might be good to get this into a bug report with all relevant
> information (distribution, architecture, network setup (traceroute?) and a
> timestamp so server logs can be matched.
>
> let us know the id and the team will be looking at that asap.
>
> thx,
> Olli
>
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