Docker seems to crash my server every 2 or 3 days

Hi there. If I disable docker with systemctl then my server stays up for weeks. When I enable dockerd, it will crash the server after a couple of days. It is not a kernel panic and hang, it just seems to reboot. The server is a Sun Fire X4170.

The server logs don’t seem to show anything really obvious. I am still using loopback devices as this is a vanilla install.

Can anyone offer some ideas for an approach to troubleshoot and resolve this?

Thanks in advance.

[dkerins@sunfire ~]$ cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
[dkerins@sunfire ~]$ uname -r
[dkerins@sunfire ~]$ sudo yum list installed|grep docker
docker-engine.x86_64 1.12.2-1.el7.centos @dockerrepo
docker-engine-selinux.noarch 1.12.2-1.el7.centos @dockerrepo