Steps for configuring nfs backend for glance and cinder:

• mkdir /home/cinder
• mkdir /home/glance
• chown 42407:42407 /home/cinder
• chown 42415:42415 /home/glance
• chmod 757 /home/glance/
• chmod 777 /home/cinder/
• cat /etc/exports
  • /home/cinder *(rw,sync)
  • /home/glance *(rw,sync)
• systemctl restart nfs-server
• systemctl restart nfs
• exportfs