sed -i s/PrivateTmp=True/PrivateTmp=False/ /lib/systemd/system/mariadb.service
systemctl daemon-reload
systemctl start mariadb
systemd[190]: Failed at step NAMESPACE spawning /usr/libexec/mariadb-prepare-db-dir: Operation not permitted
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sed -i s/PrivateTmp=True/PrivateTmp=False/ /lib/systemd/system/mariadb.service
systemctl daemon-reload
systemctl start mariadb