Using Scaleway s3-compatible object storage

Support
1

Hi,

I’m trying to set up Discourse to use Scaleways S3-compatible Object Storage, but I can’t seem to get it to work and I’m not sure where the problem is.

I’ve verified that the both of the buckets work using aws-cli and that the CORS settings are properly set up by following the official docs from Scaleway so I don’t think the buckets themselves are the problem.

These are my Discourse S3 settings (part of bucket name redacted):

discourse-admin-s3
discourse-admin-s31355×1654 348 KB

When I open the backups tab I get ‘Failed to list backups from S3: Aws::S3::Errors::BadRequest’
And when I try to upload an image, I see this in the log: 'Job exception: Failed to open TCP connection to [redacted]-discourse-files.s3.fr-par.amazonaws.com:443 (getaddrinfo: Name or service not known) '.

I’m running the latest Discourse - 2.4.0.beta10 (14ae574bc5).

2

My guess is they are less s3 compatible than they think they are?

The s3 region setting seems like it is influencing things here as well.

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3

That’s possible, but the url shouldn’t include amazonaws.com if I entered the endpoint - right?

4

Exactly, this is weird. Maybe because of the hipster TLD? Let me take a look.

@dino try removing the https:// from s3 endpoint

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5

The validation won’t let me do that: ‘s3_endpoint: Value doesn’t match the required format.’

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6

Yeah, that was a bad guess.

I can’t find a way to end with a URL like yours by reading the code responsible for it:

https://github.com/discourse/discourse/blob/master/app/models/site_setting.rb#L155-L170

Is this only affecting backups? Are uploads working?

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7

Well, that’s different from the issue that I had with GCP buckets, but you might have a look at Trouble with Google Bucket for backup - #4 by pfaffman.

I was able to determine which upgrade of the aws-sdk-s3 gem caused using GCP Buckets not to work, though the solution my client chose was to switch to an AWS bucket.

8

@Falco yeah, I’m stumped too.
The error with the url which contains amazonaws is specifically for the file upload, not backups. For backups I only get the generic error, so I guess both are broken because of the url issue.

Can you think of anything else?

@pfaffman thanks for the tip - I’ll see if changing the version of the gem helps.

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9

Hey @dino, did that end up helping out? I’m having the same problem here and I’m about to give up and switch to Amazon S3.

10

Hey @FroggyC,
I actually ran out of time to debug this so I didn’t experiment with changing the gem vesions after all. I switched to using Amazon S3 using the official docs and things worked right away.
Sorry it’s not better news…

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11

Thank you. I guess we will have to do the same. Thank you!

12

Same problem here. Is there anything we can do to help debug this?

Like for example accessing the bucket via CLI and sending in log files?

The s3_region is ignored, right? Because Scaleway uses different values than AWS.

13

You might try asking scaleway – the onus of compatibility is on them. If they aren’t fully AWS S3 compatible, they should fix that.

14

You’re implying it is their fault, yet so far you’ve been ignoring @dino’s comment:

As long as the (untampered) s3_endpoint url isn’t used as is, it will be hard to convince Scaleway the error is on their side. Especially since other s3 clients are able to connect.

15

OK, prove it. Show me the documentation and log traces that demonstrate this is the case. If you can provide actual evidence the problem on our end, I will look.

16

Sure, that’s what I meant by

So how can I tell discourse to log its s3 connection attempts? Once we know for sure, what URL it wants to connect to, I can intercept the traffic and share the results.

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17

the reason the s3 upload/backup does not work is the region that needs to be set to fr-par (or nl-ams) which can only be set by circumventing discourse’s SiteSetting validation:

(via ./launcher enter app then rails c)

SiteSetting.find_by(name: 's3_region').update_attribute(:value, 'fr-par')

after this change uploads and backups work to scaleway object storage.

Scaleway documentation on Object Storage

of course, this is a workaround and once you reset or change this site setting via Web Admin you cannot set it back to a working state (unless using rails console again)

I guess the aws/s3 Client all allow explicitly setting a region string (as opposed to the current state of the webadmin)

It is also kind of misleading in case of the “EU (Paris)” dropdown value in discourse, since this refers to the aws naming scheme eu-west-3 (or sth. like that) and not the expected value for scaleway.

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18

Aha. Do we need a special “s3 compatible region” site settings field @falco? That would allow people to key in completely arbitrary (and thus ‘made up’ from Amazon’s perspective) regions?

19

No need for that.

People on S3 clones need to set the S3 Endpoint env var, which overwrites the S3 Region.

https://github.com/discourse/discourse/blob/a1d660d9515fa446fea85bfea3b4c9b96ac75320/app/models/site_setting.rb#L155-L170

I have an entire how to explaining that with Digital Ocean S3 Clone, but I’m waiting for Digital Ocean to fix a bug in their S3 CDN before rolling it out.

If Scaleway is in a better shape than Digital Ocean, I think I will give it a try and try to base my guide on it.

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20

Right but how do they know to do that? Does the description for the existing site setting mention this? I think it should. Can you make it so?

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