PREIN

/bin/sh

/usr/share/rpm-helper/add-user mongodb $1 mongod /var/lib/mongo /bin/false

PREUN

/bin/sh

/usr/share/rpm-helper/del-service mongodb $1 mongod

POSTIN

/bin/sh

# (cg) Make sure the pid folder exists on install
/usr/bin/systemd-tmpfiles --create mongod.conf 
/usr/share/rpm-helper/add-service mongodb $1 mongod

POSTUN

/bin/sh

/usr/share/rpm-helper/del-user mongodb $1 mongod