I’am using Rancher to manage some EC2 hosts (4 nodes in an auto-scaling group) & to orchestrate containers. Everything works fine.
But, at some point, I have a recurrent problem of disk space, even if I remove unused and untagged images with this command
docker images --quiet --filter=dangling=true | xargs --no-run-if-empty docker rmi
Like I said, even if I run this command above, my hosts are continuoulsy running out of space :
Filesystem Size Used Avail Use% Mounted on udev 7.9G 12K 7.9G 1% /dev tmpfs 1.6G 1.4M 1.6G 1% /run /dev/xvda1 79G 77G 0 100% / none 4.0K 0 4.0K 0% /sys/fs/cgroup none 5.0M 0 5.0M 0% /run/lock none 7.9G 7.5M 7.9G 1% /run/shm none 100M 0 100M 0% /run/user
I’am using rancher 1.1.4 and my hosts are running Docker 1.12.5 under Ubuntu 14.04.4. LTS.
Is there something I miss? What are the best practices to configure docker for production hosts in order to avoid this problem?
Thank you for your help.