[Unit]

Description=MariaDB 10.11.15 database server (socket activation extra port)
Documentation=man:mariadbd(8)
Documentation=https://mariadb.com/kb/en/library/systemd/

[Socket]

Service=mariadb.service

# An "extra" as a descriptor name that means treat these ListenStreams as
# the same as an extra_port.
# Ref: https://mariadb.com/kb/en/thread-pool-system-status-variables/#extra_port

FileDescriptorName=extra

ListenStream=@mariadb-extra
ListenStream=/var/lib/mysql/mysql.sock-extra