MariaDB fails to start on Debian 12

[sparkhom]

Steps to reproduce:

1. brew install mariadb
2. brew services start mariadb

Expected:

==> Successfully started `mariadb` (label: homebrew.mariadb)
sparkhom@GAIA:~$ systemctl --user status homebrew.mariadb.service
● homebrew.mariadb.service - Homebrew generated unit for mariadb
     Loaded: loaded (/home/sparkhom/.config/systemd/user/homebrew.mariadb.service; enabled; preset: enabled)
     Active: active (running) since Mon 2024-09-02 21:36:12 PDT; 1s ago
   Main PID: 177 (mariadbd-safe)
     CGroup: /user.slice/user-1000.slice/[email protected]/app.slice/homebrew.mariadb.service
             ├─177 /bin/sh /home/linuxbrew/.linuxbrew/opt/mariadb/bin/mariadbd-safe --datadir=/home/linuxbrew/.linuxbrew/var/mysql
             └─261 /home/linuxbrew/.linuxbrew/opt/mariadb/bin/mariadbd --basedir=/home/linuxbrew/.linuxbrew/opt/mariadb --datadir=/home/linuxbrew/.linuxbrew/var/mysql --plugin-dir=/home/linuxbrew/.linuxbrew/opt/mariadb/lib/plugin ->

Actual:

==> Successfully started `mariadb` (label: homebrew.mariadb)
sparkhom@GAIA:~$ systemctl --user status homebrew.mariadb.service
× homebrew.mariadb.service - Homebrew generated unit for mariadb
     Loaded: loaded (/home/sparkhom/.config/systemd/user/homebrew.mariadb.service; enabled; preset: enabled)
     Active: failed (Result: start-limit-hit) since Mon 2024-09-02 21:36:35 PDT; 1s ago
   Duration: 361ms
    Process: 1330 ExecStart=/home/linuxbrew/.linuxbrew/opt/mariadb/bin/mariadbd-safe --datadir\=/home/linuxbrew/.linuxbrew/var/mysql (code=exited, status=0/SUCCESS)
   Main PID: 1330 (code=exited, status=0/SUCCESS)

Sep 02 21:36:35 GAIA systemd[161]: homebrew.mariadb.service: Scheduled restart job, restart counter is at 6.
Sep 02 21:36:35 GAIA systemd[161]: Stopped homebrew.mariadb.service - Homebrew generated unit for mariadb.
Sep 02 21:36:35 GAIA systemd[161]: homebrew.mariadb.service: Start request repeated too quickly.
Sep 02 21:36:35 GAIA systemd[161]: homebrew.mariadb.service: Failed with result 'start-limit-hit'.
Sep 02 21:36:35 GAIA systemd[161]: Failed to start homebrew.mariadb.service - Homebrew generated unit for mariadb.

I looked into it further and it looks like the ExecStart command has an extra backslash after --datadir:

ExecStart=/home/linuxbrew/.linuxbrew/opt/mariadb/bin/mariadbd-safe --datadir\=/home/linuxbrew/.linuxbrew/var/mysql

Removing the backslash fixes the issue and allows MariaDB to start:

ExecStart=/home/linuxbrew/.linuxbrew/opt/mariadb/bin/mariadbd-safe --datadir=/home/linuxbrew/.linuxbrew/var/mysql

[carlocab]

Doesn't seem to be coming from the service block:

https://github.com/Homebrew/homebrew-core/blob/bd6394bad2c4f2cc77c4298573f6bf818b991c90/Formula/m/mariadb.rb#L174-L178

So probably introduced when brew translates the service block into a systemd unit file.

What's the output of brew config and brew doctor?

[cho-m]

The backslash is from:

brew/Library/Homebrew/service.rb

Line 468 in 8f00fef

cmd = command&.map { |arg| Utils::Shell.sh_quote(arg) }

brew/Library/Homebrew/utils/shell.rb

Line 137 in 8f00fef

str.gsub!(UNSAFE_SHELL_CHAR, "\\\\" + "\\1") # rubocop:disable Style/StringConcatenation

---

Systemd uses its own (non-POSIX) handling so may need to modify the command to match. May have to check on exact handling of backslashes (i.e. the ones Systemd handles vs. the ones shell handles and how it gets passed down).

[sparkhom]

What's the output of brew config and brew doctor?

sparkhom@GAIA:~$ brew config
HOMEBREW_VERSION: 4.3.19
ORIGIN: https://github.com/Homebrew/brew
HEAD: 1f9bd2de89883ec9a59db3eab0f5475bce06d5bc
Last commit: 2 days ago
Core tap JSON: 03 Sep 03:09 UTC
HOMEBREW_PREFIX: /home/linuxbrew/.linuxbrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_DISPLAY: :0
HOMEBREW_MAKE_JOBS: 12
Homebrew Ruby: 3.3.4 => /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.4_1/bin/ruby
CPU: dodeca-core 64-bit zen
Clang: N/A
Git: 2.39.2 => /bin/git
Curl: 7.88.1 => /bin/curl
Kernel: Linux 5.15.153.1-microsoft-standard-WSL2 x86_64 GNU/Linux
OS: Debian GNU/Linux 12 (bookworm)
WSL: 2 (Microsoft Store)
Host glibc: 2.36
/usr/bin/gcc: 12.2.0
/usr/bin/ruby: N/A
glibc: N/A
gcc@11: N/A
gcc: N/A
xorg: N/A

sparkhom@GAIA:~$ brew doctor
Your system is ready to brew.