System container docker

This change allows for the use of either the traditional package install
of docker OR a system container install of docker.

Two new inventory options, openshift_docker_use_system_container and
openshift_docker_systemcontainer_image_registry_override, have been
added which are be used to install with a system container. By default
this option is commented out.

One new fact has been added:

- docker.service_name: docker by default, container-engine-docker
for system container

1 files changed, 12 insertions, 0 deletions

diff --git a/inventory/byo/hosts.ose.example b/inventory/byo/hosts.ose.example
index 80cc65f06..42097a593 100644
--- a/inventory/byo/hosts.ose.example
+++ b/inventory/byo/hosts.ose.example
@@ -78,6 +78,18 @@ openshift_release=v3.5
 #openshift_docker_blocked_registries=registry.hacker.com
 # Disable pushing to dockerhub
 #openshift_docker_disable_push_dockerhub=True
+# Use Docker inside a System Container. Note that this is a tech preview and should
+# not be used to upgrade!
+# The following options for docker are ignored:
+# - docker_version
+# - docker_upgrade
+# The following options must not be used
+# - openshift_docker_options
+#openshift_docker_use_system_container=False
+# Force the registry to use for the system container. By default the registry
+# will be built off of the deployment type and ansible_distribution. Only
+# use this option if you are sure you know what you are doing!
+#openshift_docker_systemcontainer_image_registry_override="registry.example.com"
 # Items added, as is, to end of /etc/sysconfig/docker OPTIONS
 # Default value: "--log-driver=journald"
 #openshift_docker_options="-l warn --ipv6=false"