Backup can't find linked mysql container.

[meeeo]

https://asciinema.org/a/43800

What's wrong?

[mprokopov]

You should check environment in DB container, with docker-compose version "2" DB variables is not published, thus mysql-backup could not find credentials.
Check this https://docs.docker.com/compose/link-env-deprecated/

With version "1" just ok, but beware, fresh MySQL 5.7 will be buggy due to mydumper/mydumper#6

[domibarton]

Thanks @mprokopov for your insights and your "reverse engineering". Glad to see people actually giving context to bugs :)

I'll have a look at it and I'll try to fix it.

[domibarton]

@mprokopov Would you be interested in helping solving this issue? If I'm understanding this correctly, we no longer can access env vars from a different container due to deprecation of the link feature. Thus, we need to defined the credentials explicitly, right? :/