for socket in /run/mysqld/*; do mysql --skip-ssl --socket=$socket -e "STOP SLAVE"; done

systemctl stop mariadb 'mariadb@*'

pgrep mysqld

apt update && apt -y full-upgrade

run-puppet-agent; disable-puppet reboot && umount /srv && shutdown -r now

skip-slave-start #|| systemctl set-environment MYSQLD_OPTS="--skip-slave-start"
enable-puppet reboot && run-puppet-agent

systemctl start mariadb
or
systemctl start mariadb@s1
systemctl start mariadb@s2
systemctl start mariadb@s3
systemctl start mariadb@s4
...

for socket in /run/mysqld/*; do mysql_upgrade --skip-ssl --socket=$socket; done
for socket in /run/mysqld/*; do mysql --skip-ssl --socket=$socket -e "START SLAVE"; done