mysql-backup-s3: custom S3 endpoints not working

[schickling]

mysql-backup-s3: custom S3 endpoints not working

[moracabanas]

I made some progress debugging:

from minio docs you are supposedly be able to do this:

aws --endpoint-url https://play.min.io:9000 s3 ls s3://mybucket

where in my case would be

aws --endpoint-url https://example.fi-hel2.upcloudobjects.com s3 ls s3://example-bucket

This is returning the following error:

Could not connect to the endpoint URL: "https://s3.fi-hel2.amazonaws.com/example-bucket?delimiter=%2F&prefix=&encoding-type=url"

but if I omit s3://example-bucket it remains like this:

aws --endpoint-url https://example.fi-hel2.upcloudobjects.com s3 ls

And it works displaying my buckets

2021-03-09 16:07:36 example-bucket
2021-03-02 12:51:34 other-example-bucket

So, what am I missing here?

[moracabanas]

SOLVED

First I tried to upgrade and customize the whole image. Going to latest alpine python 3 and p3 awscli with not behavior changes at all. (I should then upgrade the image for mainly for security reasons and pull request as no braking changes for me 😅)

I was missing to use S3_REGION=fi-hel2 env.
Now I tested it and it is working:

# sh backup.sh
Creating dump for --all-databases from mariadb...
-- bla bla things --
Uploading 2021-04-27T025826Z.dump.sql.gz on S3...
SQL backup finished

It was very hard to find out by trial and error due to error log output.

I'm glad I found the solution.