Check for other errors or warnings further up in the log file. Check the Cinder API log for clues why Cinder API doesn't start. If your DevStack is a recent version, the command journalctl -u devstack at c-api is likely to show you the log. You may also have a c-api log file, usually under /opt/stack/logs. By the way, if you want my recommendation: DevStack was created for developers and for automatic integration testing. It is not a good tool for a quick start into OpenStack. /Packstack /(only on RHEL or Centos, unfortunately) is a bit better for newbies, but you learn infinitely more by first following the installation tutorials and trying to understand each step. This will give you are reasonable foundation on which you can build by, for example, setting up DevStack-based clouds. On 5/20/2018 6:56 PM, MUHAMMAD SAMIULLAH . wrote: > HELLO SIR > I HAVE SOLVED THE IP ADDRESS ISSUE BUT NOW IT SHOWS ANOTHER ERROR > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack at lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20180521/0daabaf3/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: OpenPGP digital signature URL: <http://lists.openstack.org/pipermail/openstack/attachments/20180521/0daabaf3/attachment.sig>