db2094:3318 crashed and needs recloning.
The procedure would be:
- stop mariadb@s8 and delete /srv/sqldata.s8
- stop slave on its master, copy its coordinates, stop mysql and copy the content
- Once the data is cloned run: systemctl set-environment MYSQLD_OPTS="--skip-slave-start" and start mariadb@s8
- stop slave; reset slave all;
- mysql_upgrade
- Run redact_sanitarium to sanitize wikidatawiki
- Configure replication
- Start replication