add a volume on master host, in AWS provisioning

filter_plugins/oo_filters.py

@@ -191,7 +191,11 @@ class FilterModule(object):
                     { 'root':
                         { 'volume_size': 10, 'device_type': 'gp2',
                           'iops': 500
-                        }
+                        },
+                        'docker':
+                          { 'volume_size': 40, 'device_type': 'gp2',
+                            'iops': 500, 'ephemeral': 'true'
+                          }
                     },
                   'node':
                     { 'root':
@@ -216,7 +220,7 @@ class FilterModule(object):
         root_vol['delete_on_termination'] = True
         if root_vol['device_type'] != 'io1':
             root_vol.pop('iops', None)
-        if host_type == 'node':
+        if host_type in ['master', 'node']:
             docker_vol = data[host_type]['docker']
             docker_vol['device_name'] = '/dev/xvdb'
             docker_vol['delete_on_termination'] = True

playbooks/aws/openshift-cluster/tasks/launch_instances.yml

@@ -97,6 +97,10 @@
           volume_size: "{{ lookup('env', 'os_master_root_vol_size') | default(25, true) }}"
           device_type: "{{ lookup('env', 'os_master_root_vol_type') | default('gp2', true) }}"
           iops: "{{ lookup('env', 'os_master_root_vol_iops') | default(500, true) }}"
+        docker:
+          volume_size: "{{ lookup('env', 'os_docker_vol_size') | default(10, true) }}"
+          device_type: "{{ lookup('env', 'os_docker_vol_type') | default('gp2', true) }}"
+          iops: "{{ lookup('env', 'os_docker_vol_iops') | default(500, true) }}"
       node:
         root:
           volume_size: "{{ lookup('env', 'os_node_root_vol_size') | default(85, true) }}"

playbooks/aws/openshift-cluster/templates/user_data.j2

@@ -19,7 +19,7 @@ fs_setup:
   partition: auto
 {% endif %}
 
-{% if type == 'node' %}
+{% if type == 'node' or type == 'master' %}
 mounts:
 - [ xvdb ]
 - [ ephemeral0 ]