Fix node labeling. Issue #305

filter_plugins/oo_filters.py

@@ -130,6 +130,16 @@ def oo_combine_key_value(data, joiner='='):
             rval.append("%s%s%s" % (item['key'], joiner, item['value']))
 
         return rval
+
+    @staticmethod
+    def oo_combine_dict(data, in_joiner='=', out_joiner=' '):
+        '''Take a dict in the form of { 'key': 'value', 'key': 'value' } and
+           arrange them as a string 'key=value key=value'
+        '''
+        if not issubclass(type(data), dict):
+            raise errors.AnsibleFilterError("|failed expects first param is a dict")
+
+        return out_joiner.join([ in_joiner.join([k, v]) for k, v in data.items() ])
 
     @staticmethod
     def oo_ami_selector(data, image_name):
@@ -309,6 +319,7 @@ def filters(self):
             "oo_ami_selector": self.oo_ami_selector,
             "oo_ec2_volume_definition": self.oo_ec2_volume_definition,
             "oo_combine_key_value": self.oo_combine_key_value,
+            "oo_combine_dict": self.oo_combine_dict,
             "oo_split": self.oo_split,
             "oo_filter_list": self.oo_filter_list,
             "oo_parse_heat_stack_outputs": self.oo_parse_heat_stack_outputs

playbooks/common/openshift-node/config.yml

@@ -128,7 +128,7 @@
   vars:
     openshift_nodes: "{{ hostvars
                          | oo_select_keys(groups['oo_nodes_to_config'])
-                         | oo_collect('openshift.common.hostname') }}"
+                         | oo_collect('openshift.common.hostname') }}" 
     openshift_unscheduleable_nodes: "{{ hostvars | oo_select_keys(groups['oo_nodes_to_config'] | default([]))
                                       | oo_collect('openshift.common.hostname', {'openshift_scheduleable': False}) }}"
   pre_tasks:

roles/openshift_manage_node/tasks/main.yml

@@ -16,3 +16,11 @@
   command: >
     {{ openshift.common.admin_binary }} manage-node {{ item }} --schedulable=true
   with_items: openshift_scheduleable_nodes
+
+- name: Label nodes
+  command: >
+    {{ openshift.common.client_binary }} label --overwrite node {{ item }} {{ hostvars[item]['openshift_node_labels'] | oo_combine_dict  }}
+  with_items:
+    -  "{{ openshift_nodes }}"
+  when: 
+    "'openshift_node_labels' in hostvars[item]"

roles/openshift_node/README.md

@@ -34,6 +34,18 @@ openshift_common
 Example Playbook
 ----------------
 
+Notes
+-----
+
+Currently we support re-labeling nodes but we don't re-schedule running pods nor remove existing labels. That means you will have to trigger the re-schedulling manually. To re-schedule your pods, just follow the steps below:
+
+```
+oadm manage-node --schedulable=false ${NODE}
+oadm manage-node --evacuate ${NODE}
+oadm manage-node --schedulable=true ${NODE}
+````
+
+
 TODO
 
 License