[Airbrake] [Production] the server responded with status 502

Question

[Airbrake] [Production] the server responded with status 502

mkcode opened this issue 5 years ago · comments

Airbrake error: #7391
Airbrake project: Hacktoberfest

Error type: Faraday::ClientError
Error message: the server responded with status 502
Where: users#register
Occurred at: Oct 03, 2019 14:48:38 UTC
First seen at: Sep 25, 2019 23:30:48 UTC
Occurrences: 14914 (0 since last deploy on <no information>)
Severity: error

URL: https://hacktoberfest.digitalocean.com/register
File: /GEM_ROOT/gems/faraday-0.15.4/lib/faraday/response/raise_error.rb

Backtrace:

/GEM_ROOT/gems/faraday-0.15.4/lib/faraday/response/raise_error.rb:13:in on_complete
/GEM_ROOT/gems/faraday-0.15.4/lib/faraday/response.rb:9:in block in call
/GEM_ROOT/gems/faraday-0.15.4/lib/faraday/response.rb:61:in on_complete
/GEM_ROOT/gems/faraday-0.15.4/lib/faraday/response.rb:8:in call

Chris Ewald · Answer 1 · Thu Oct 03 2019 23:04:12 GMT+0800 (China Standard Time)

@MattIPv4 - This is the error that is causing the 500 errors on the profile and register pages. IMO - the best thing we can do is show an error page saying something to effect of 'We had a problem communicating with am external API. Please refresh the page. If problems persist, contact support'

Matt Cowley · Answer 2 · Thu Oct 03 2019 23:05:34 GMT+0800 (China Standard Time)

Some of these users were accessing their profile, not registering. Is it still the same error?
One or two could not get past this error until they used a fresh browser, refreshing didn't fix it?

Chris Ewald · Answer 3 · Thu Oct 03 2019 23:06:59 GMT+0800 (China Standard Time)

Yes. Here is the tally per page:

Chris Ewald · Answer 4 · Thu Oct 03 2019 23:07:39 GMT+0800 (China Standard Time)

The Jobs are in run in background and produce no user facing error. They will be retried automatically.

Matt Cowley · Answer 5 · Thu Oct 03 2019 23:08:30 GMT+0800 (China Standard Time)

Ah yeah, makes sense. We should stick a friendly error page in then. I wonder why GitHub is throwing back 502s?

Chris Ewald · Answer 6 · Thu Oct 03 2019 23:09:13 GMT+0800 (China Standard Time)

It's just somewhat unreliable 😞

Matt Cowley · Answer 7 · Thu Oct 03 2019 23:12:26 GMT+0800 (China Standard Time)

Do we record the response body for these, I'd be interested to know if GitHub has any actual reason for erroring.

Chris Ewald · Answer 8 · Thu Oct 03 2019 23:14:17 GMT+0800 (China Standard Time)

'Something went wrong while executing your query. This is most likely a GitHub bug.' is the error message. :-)

Matt Cowley · Answer 9 · Thu Oct 03 2019 23:14:49 GMT+0800 (China Standard Time)

Ah yes GitHub, very helpful as always 😂

Chris Ewald · Answer 10 · Thu Oct 03 2019 23:28:57 GMT+0800 (China Standard Time)

@MattIPv4 - It would be helpful if you could provide the copy of exactly what to say on this page.

Chris Ewald · Answer 11 · Thu Oct 03 2019 23:44:00 GMT+0800 (China Standard Time)

We want to use the rescue_from pattern in the controller to handle these: https://api.rubyonrails.org/classes/ActiveSupport/Rescuable/ClassMethods.html

Matt Cowley · Answer 12 · Fri Oct 04 2019 00:04:53 GMT+0800 (China Standard Time)

<div class="section">
  <div class="container">
    <div class="details">

      <h1 class="title is-1">Uh oh... this doesn't seem right.</h1>
      <p>
        Well, something has gone wrong and it's our fault.
        I wish I could tell you more but all I've got is <code>Error 500</code>.
      </p>

      <br/>
      <br/>
      <div class="line-br">
        <span class="line-br-1">-</span>
        <span class="line-br-2">-</span>
      </div>
      <br/>

      <h3 class="title is-3">
        Here's what you should try doing to see if we can get this sorted:
      </h3>

      <p>
        <span class="highlight">●</span> Try refreshing this page. It might just start working!
      </p>
      <p>
        <span class="highlight">●</span> Head to the <%= link_to "homepage", root_path %> and try again from there.
      </p>
      <p>
        <span class="highlight">●</span>
        <a href="https://www.whatismybrowser.com/guides/how-to-clear-cookies-browsing-history-and-cache/auto"
           target="_blank" rel="noopener">Clear your cookies and cache</a> (if you’d like to give that a shot), then
        reload the page.
      </p>
      <p>
        <span class="highlight">●</span> Give this a few minutes to get itself together. Try again in 5?
      </p>
      <p>
        <span class="highlight">●</span> If all else fails and this page still isn't working for you after 30 minutes,
        please let us know by emailing
        <a href="mailto:hacktoberfest@digitalocean.com">hacktoberfest@digitalocean.com</a>.
      </p>

    </div>
  </div>
</div>

The Error 500 text can be made dynamic with whatever error code we're displaying this content for :)

Chris Ewald · Answer 13 · Fri Oct 04 2019 01:35:55 GMT+0800 (China Standard Time)

@MattIPv4 - This is great. Thanks. It can serve as our generic 500 error page. We are also able to show a specific message on the API failure messages, where we could be more focused on just retrying. What do you think?

Matt Cowley · Answer 14 · Fri Oct 04 2019 01:37:05 GMT+0800 (China Standard Time)

Seeing some of the 500 reports, reloading wasn't working for some, across multiple browsers. As reload is the first item here, I think this should be fine for everything?

Chris Ewald · Answer 15 · Fri Oct 04 2019 01:38:41 GMT+0800 (China Standard Time)

It will work fine for everything. OK

Chris Ewald · Answer 16 · Fri Oct 04 2019 01:39:55 GMT+0800 (China Standard Time)

@fridaland - Disregard my message for using rescue_from above. Follow this to setup a generic 500 error page: https://guides.rubyonrails.org/action_controller_overview.html#the-default-500-and-404-templates

Note that this page needs to be just static html, no ERB <% %> are allowed here.

Chris Ewald · Answer 17 · Fri Oct 04 2019 13:07:38 GMT+0800 (China Standard Time)

I took this template and made a 500, 404, and specific api error page in #294.