[debian-mysql] Bug#1056395: mariadb-server: debian.cnf [mysql_upgrade] basedir option ignored

[Otto Kekäläinen]

> The automatically generated /etc/mysql/debian.cnf includes:
>         [mysql_upgrade]
>         ...
>         basedir  = /usr
>
> However, mysql_upgrade(1) says:
>         --basedir=path
>         Old option accepted for backward compatibility but ignored.
>
> This issue is still present in 10.11.5-3 release from SID.


No, it is not in neither Bookworm nor Deibian Sid / unstable anymore.
This can be confirmed by looking into files at
https://salsa.debian.org/mariadb-team/mariadb-server/-/tree/debian/latest/debian
or testing with a fresh install:

```
± docker run -it -v ${PWD}:/build -w /build debian:sid bash
root at eb0c4013a610:/build# apt update
root at eb0c4013a610:/build# apt install -y mariadb-server
...
Setting up mariadb-plugin-provider-bzip2 (1:10.11.5-3) ...
Setting up mariadb-plugin-provider-lzma (1:10.11.5-3) ...
Setting up mariadb-plugin-provider-lzo (1:10.11.5-3) ...
Setting up mariadb-plugin-provider-lz4 (1:10.11.5-3) ...
Setting up libcgi-fast-perl (1:2.17-1) ...
Setting up mariadb-plugin-provider-snappy (1:10.11.5-3) ...
Processing triggers for libc-bin (2.37-12) ...
Processing triggers for mariadb-server (1:10.11.5-3) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog
based frontend cannot be used. at
/usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 78.)
debconf: falling back to frontend: Readline
invoke-rc.d: could not determine current runlevel
invoke-rc.d: policy-rc.d denied execution of restart.
root at eb0c4013a610:/build# cat /etc/mysql/debian.cnf
# THIS FILE IS OBSOLETE. STOP USING IT IF POSSIBLE.
# This file exists only for backwards compatibility for
# tools that run '--defaults-file=/etc/mysql/debian.cnf'
# and have root level access to the local filesystem.
# With those permissions one can run 'mariadb' directly
# anyway thanks to unix socket authentication and hence
# this file is useless. See package README for more info.
[client]
host     = localhost
user     = root
[mysql_upgrade]
host     = localhost
user     = root
# THIS FILE WILL BE REMOVED IN A FUTURE DEBIAN RELEASE.
```

If you have '[mysql_upgrade]' with anything else than above in your
/etc/mysql/debian.cnf it must be a remnant from some other older prior
install.