Disable creation of cbr0, the kubelet does it now.

Conditionalize the docker bridge.

cluster/saltbase/salt/docker/docker-defaults

@@ -2,5 +2,10 @@ DOCKER_OPTS=""
 {% if grains.docker_opts is defined and grains.docker_opts %}
 DOCKER_OPTS="${DOCKER_OPTS} {{grains.docker_opts}}"
 {% endif %}
-DOCKER_OPTS="${DOCKER_OPTS} --bridge cbr0 --iptables=false --ip-masq=false"
+
+{% set docker_bridge = "" %}
+{% if grains['roles'][0] == 'kubernetes-pool' %}
+  {% set docker_bridge = "--bridge cbr0" %}
+{% endif %} 
+DOCKER_OPTS="${DOCKER_OPTS} {{docker_bridge}} --iptables=false --ip-masq=false"
 DOCKER_NOFILE=1000000

cluster/saltbase/salt/docker/init.sls

@@ -48,11 +48,6 @@ net.ipv4.ip_forward:
   sysctl.present:
     - value: 1
 
-cbr0:
-  container_bridge.ensure:
-    - cidr: {{ grains['cbr-cidr'] }}
-    - mtu: 1460
-
 {{ environment_file }}:
   file.managed:
     - source: salt://docker/docker-defaults
@@ -124,7 +119,6 @@ docker:
     - enable: True
     - watch:
       - file: {{ environment_file }}
-      - container_bridge: cbr0
 {% if override_docker_ver != '' %}
     - require:
       - pkg: lxc-docker-{{ override_docker_ver }}