Are you getting the below error while starting with the fresh docker installation on CentOS 7.0?
/usr/bin/docker: relocation error: /usr/bin/docker: symbol dm_task_get_info_with_deferred_remove, version Base not defined in file libdevmapper.so.1.02 with link time reference
Fix: This is possibly an issue with devicemapper ( still Red Hat is trying to get it fixed).
The solution is running yum update which will fetch the latest devicemapper related packages and it should fix the issue.
Also, you can follow the below steps for smooth functioning of docker:
1. Disable SELINUX
2. Disable iptables
3. Remove SELINUX entry under /etc/sysconfig/docker
Happy Dockerizing !!!!