OpenShift 3.1 Error docker conflicts with atomic-openshift-3.1.1.6

Resolution

Docker 1.9 should not be installed on any new or existing OSE 3.1 or 3.0 hosts, as the combination has proven to have performance issues. For more information see the knowledge article for more information: Are OpenShift Enterprise 3.1 and Docker 1.9 compatible?

• If docker 1.9 is installed already then it must be removed and docker 1.8 will need to be installed instead.

  # yum swap docker-* docker-*1.8.2
  # sed -i 's/--storage-opt dm.use_deferred_deletion=true//' /etc/sysconfig/docker-storage
  # systemctl restart docker 
  

To move forward with a yum update or yum install, docker-1.9 and docker-selinux-1.9 rpms need to be excluded. See knowledge article for details on how to exclude packages from getting updated in Red Hat Enterprise Linux while updating system via yum?

• Temporary solution via Command line:

  # yum update --exclude="docker-1.9* docker-selinux-1.9*"
  

• To make a persistent change, edit the /etc/yum.conf adding the following to the file:

  exclude=docker-1.9* docker-selinux-1.9*

  • Example file would look like:

  # cat /etc/yum.conf 
  [main]
  exclude=docker-1.9* docker-selinux-1.9*
  cachedir=/var/cache/yum/$basearch/$releasever
  keepcache=0
  debuglevel=2
  logfile=/var/log/yum.log
  exactarch=1
  obsoletes=1
  gpgcheck=1
  plugins=1
  installonly_limit=3
  

• To accomplish this with an Ansible ad-hoc command, running on all hosts in your Ansible Hosts file, run the following:

# ansible all -a "sed -i  '/\[main\]/a exclude=docker-1.9* docker-selinux-1.9*' /etc/yum.conf"