Adding extra code to the DHCP task

Author: falcocer-ibm

roles/maas/tasks/config_dhcpd.yml

@@ -1,59 +1,62 @@
 ---
-- name: Configure MAAS DHCP Service
-  when: inventory_hostname in groups['maas_region_rack_server'] and maas_installed.failed == false and logged_into_maas.rc == 0
-  block:
-    - name: Get a list of all hosts from the inventory
-      set_fact:
-        all_list: "{{ groups['all'] }}"
-      register: all_nodes_listed
-    
-    - name: Debugging subnet variable
-      debug:
-        var: "{{ item }}"
-
-    - name: Creating IP Range
-      command: "maas admin ipranges create type={{ subnet.ip_range_type }} start_ip={{ subnet.start_ip }} end_ip={{ subnet.end_ip }}"
-      ignore_errors: true
-
-    - name: Selecting the correct fabric to configure
-      command: maas admin subnet read {{ subnet.subnet }}|grep 'fabric-'|cut -d '"' -f 4
-      register: fabric_selected
-
-    - name: Getting subnet ID
-      command: maas admin subnet read {{ subnet.subnet }}|grep '"id"'|cut -d ':' -f 2|cut -d ',' -f 1|head -1
-      register: subnet_id
-
-    - name: Enabling DHCP with HA on the selected subnet
-      command: "maas admin vlan update {{ fabric_selected.stdout }} 0 dhcp_on=True primary_rack={{ hostvars[groups['maas_region_rack_server'].0] }} secondary_rack={{ hostvars[groups['maas_rack_server'].0] }}"
-
-    - name: Creating temporary snippets directory
-      file:
-        path: /tmp/snippets
-        state: directory
-        mode: '0755'
-      register: snippets_directory
-
-    - name: Copying each subnet classes snippet
-      template:
-        src: dhcpd.classes.conf.j2
-        dest: "/tmp/snippets/{{ subnet }}_classes_snippet"
-      when: subnet.classes is defined and snippets_directory.failed == false
-      register: dhcp_classes_config
-
-#    - name: Creating DHCP snippets for the classes
-#      command: maas admin dhcpsnippets create name=class_{{ item.key }} value="class ""{{ item.key }}"" {
-#    "{{ item.value }}";
-#  }" description='DHCP config for class "{{ item.key }}"" subnet="{{ subnet_id.stdout }}"'
-#      ignore_errors: true
-#      loop: "{{ subnet.classes | dict2items }}"
-
-      #    - name: Creating DHCP snippets for the pools
-
-#    - name: Creating DHCP snippets for all hosts
-#      command: "maas admin dhcpsnippets create name="{{ item }}" value="host {{ item }} {
-#    hardware ethernet {{ hostvars[item]['mac'] }};
-#    fixed-address {{ hostvars[item]['ip'] }};
-#  }" description="DHCP config for host {{ item }}" subnet="{{ subnet_id.stdout }}""
-#      with_items: "{{ all_list }}"
-#      ignore_errors: true
-#      when: hostvars[item]['mac'] is defined
+- name: Creating IP Range
+  command: "maas admin ipranges create type={{ subnet_data.ip_range_type }} start_ip={{ subnet_data.start_ip }} end_ip={{ subnet_data.end_ip }}"
+  ignore_errors: true
+  tags: skip
+
+- name: Selecting the correct fabric to configure
+  command: bash -c "maas admin subnet read {{ subnet_data.cidr }}|grep 'fabric-'|cut -d '\"' -f 4"
+  register: fabric_selected
+
+- name: Getting subnet ID
+  command: bash -c "maas admin subnet read {{ subnet_data.cidr }}|grep '\"id\"'|cut -d ':' -f 2|cut -d ',' -f 1|head -1"
+  register: subnet_id
+
+- name: Enabling DHCP with HA on the selected subnet
+  command: "maas admin vlan update {{ fabric_selected.stdout }} 0 dhcp_on=True primary_rack={{ groups['maas_region_rack_server'][0] }} secondary_rack={{ groups['maas_rack_server'][0] }}"
+
+- name: Creating temporary snippets directory
+  file:
+    path: /tmp/snippets
+    state: directory
+    mode: '0755'
+  register: snippets_directory
+
+- name: Copying each subnet classes snippet
+  template:
+    src: dhcpd.classes.conf.j2
+    dest: "/tmp/snippets/{{ subnet_name }}_classes_snippet"
+  when: subnet_data.classes is defined and snippets_directory.failed == false
+  register: dhcp_classes_config
+
+- name: Copying each subnet pools snippet
+  template:
+    src: dhcpd.pools.conf.j2
+    dest: "/tmp/snippets/{{ subnet_name }}_pools_snippet"
+  when: subnet_data.pools is defined and snippets_directory.failed == false
+  register: dhcp_pools_config
+
+- name: Copying each subnet hosts snippet
+  template:
+    src: dhcpd.hosts.conf.j2
+    dest: "/tmp/snippets/{{ subnet_name }}_hosts_snippet"
+  when: snippets_directory.failed == false
+  register: dhcp_hosts_config
+
+- name: Slurp classes file content
+  slurp:
+    src: "/tmp/snippets/{{ subnet_name }}_classes_snippet"
+  register: classes_file
+
+- name: Decode and show file contents
+  set_fact:
+    classes_content: "{{ classes_file.content | b64decode }}"
+
+- name: Debugging classes_content
+  debug:
+    var: classes_content
+
+- name: Adding classes snippets into MAAS
+  command: "maas {{ maas_admin_username }} dhcpsnippets create name='{{ subnet_name }}_classes' value='{{ classes_content }}' description='This snippet configures the classes in {{ subnet_name }} subnet' subnet='{{ subnet_id.stdout }}'"
+  when: dhcp_classes_config.failed == false
+  ignore_errors: true

roles/maas/tasks/main.yml

@@ -9,13 +9,18 @@
   apt:
     name: snapd
     state: present
+  tags: skip
+
 
 - name: Ensure system is up-to-date
   apt:
     update_cache: yes
+  tags: skip
+
 
 # Install and configure the MAAS DB
 - import_tasks: install_maasdb.yml
+  tags: skip
 
 # Install MAAS
 - name: Install MAAS with Snap
@@ -25,28 +30,38 @@
     channel: "{{ maas_version }}/{{ maas_snap_channel }}"
     state: present
   register: maas_installed
+  tags: skip
 
 # Initialize MAAS  
 - import_tasks: initialize_region_rack.yml
+  tags: skip
+
 - import_tasks: initialize_secondary_rack.yml
+  tags: skip
 
 # Logging into the MAAS API to use CLI
 
 - name: Get API key
   command: maas apikey --username={{ maas_admin_username }}
   when: inventory_hostname in groups['maas_region_rack_server']
   register: maas_api_key
+  tags: skip
 
 - name: Logging into MAAS API
   command: "maas login {{ maas_admin_username }} http://{{ hostvars[groups['maas_region_rack_server'].0]['ip'] }}:5240/MAAS/api/2.0/ {{ maas_api_key.stdout }}"
   when: inventory_hostname in groups['maas_region_rack_server']
   register: logged_into_maas
+  tags: skip
 
 # Configure DHCP Service
-- include_tasks: config_dhcpd.yml
-  loop: "{{ dhcp_subnets }}"
-#  loop_control:
-#    loop_var: subnet
+- name: dhcp_configuration
+  include_tasks: config_dhcpd.yml
+  loop: "{{ dhcp_maas_subnets|dict2items }}"
+  loop_control:
+    loop_var: subnet
+  vars:
+    subnet_name: "{{ subnet.key }}"
+    subnet_data: "{{ subnet.value }}"
 
 # Add Machines into MAAS
 - import_tasks: add_machines.yml

roles/maas/templates/dhcpd.classes.conf.j2

@@ -1,4 +1,4 @@
-{% for subnet, subnet_item in dhcp_subnets.items() %}
+{% for subnet, subnet_item in dhcp_maas_subnets.items() %}
 {% if subnet_item.classes is defined -%}
   {% for class_name, class_string in subnet_item.classes.items() -%}
   class "{{ class_name }}" {

roles/maas/templates/dhcpd.hosts.conf.j2

@@ -0,0 +1,18 @@
+{% for subnet, subnet_item in dhcp_maas_subnets.items() %}
+  {% for host in groups['all'] | sort | unique -%}
+  {% if hostvars[host][subnet_item.macvar] is defined -%}
+  {% if hostvars[host][subnet_item.ipvar] | ansible.utils.ipaddr(subnet_item.cidr) -%}
+  host {{ host.split('.')[0] }}-{{ subnet }} {
+   {% if hostvars[host]['domain_name_servers'] is defined -%}
+    option domain-name-servers {{ hostvars[host]['domain_name_servers']|join(', ') }};
+    {% endif -%}
+    hardware ethernet {{ hostvars[host][subnet_item.macvar] }};
+    fixed-address {{ hostvars[host][subnet_item.ipvar] }};
+  {% if hostvars[host]['dhcp_option_hostname'] is defined and hostvars[host]['dhcp_option_hostname'] == true %}
+  option host-name "{{ host.split('.')[0] }}";
+  {% endif -%}
+  }
+  {% endif -%}
+  {% endif -%}
+  {% endfor -%}
+{% endfor %}

roles/maas/templates/dhcpd.pools.conf.j2

@@ -0,0 +1,25 @@
+{% for subnet, subnet_item in dhcp_maas_subnets.items() %}
+  {% if subnet_item.pools is defined -%}
+  {% for pool, pool_value in subnet_item.pools.items() -%}
+  pool {
+    {% if pool == "unknown_clients" -%}
+    allow unknown-clients;
+    {% else -%}
+    allow members of "{{ pool }}";
+    {% endif -%}
+    {% if pool_value.range is string -%}
+    range {{ pool_value.range }};
+    {% else -%}
+    range {{ pool_value.range|join(';\n    range ') }};
+    {% endif -%}
+    {% if pool_value.next_server is defined -%}
+    next-server {{ pool_value.next_server }};
+    {% endif -%}
+    {% if pool_value.filename is defined -%}
+    filename "{{ pool_value.filename }}";
+    {% endif -%}
+  }
+
+  {% endfor -%}
+  {%- endif -%}
+{% endfor %}