Allow application gateway probe to use host header from HTTP settings

plugins/modules/azure_rm_appgateway.py

@@ -261,6 +261,9 @@
                     - The I(probe) retry count.
                     - Backend server is marked down after consecutive probe failure count reaches UnhealthyThreshold.
                     - Acceptable values are from 1 second to 20.
+            pick_host_name_from_backend_http_settings:
+                description:
+                    - Whether host header should be picked from the host name of the backend HTTP settings. Default value is false.
     backend_http_settings_collection:
         description:
             - Backend http settings of the application gateway resource.
@@ -301,7 +304,7 @@
                     - Host header to be sent to the backend servers.
             pick_host_name_from_backend_address:
                 description:
-                    - Whether to pick host header should be picked from the host name of the backend server. Default value is false.
+                    - Whether host header should be picked from the host name of the backend server. Default value is false.
             affinity_cookie_name:
                 description:
                     - Cookie name to use for the affinity cookie.
@@ -471,7 +474,8 @@ class Actions:
     path=dict(type='str'),
     protocol=dict(type='str', choices=['http', 'https']),
     timeout=dict(type='int'),
-    unhealthy_threshold=dict(type='int')
+    unhealthy_threshold=dict(type='int'),
+    pick_host_name_from_backend_http_settings=dict(type='bool')
 )
 
 

tests/integration/targets/azure_rm_appgateway/tasks/main.yml

@@ -196,6 +196,91 @@
     that:
       - output.changed
 
+- name: Create instance of Application Gateway with probe using hostname from backend http settings
+  azure_rm_appgateway:
+    resource_group: "{{ resource_group }}"
+    name: "appgateway{{ rpfx }}"
+    sku:
+      name: standard_small
+      tier: standard
+      capacity: 2
+    ssl_policy:
+      policy_type: predefined
+      policy_name: ssl_policy20150501
+      disabled_ssl_protocols:
+        - tls_v1_0
+      cipher_suites:
+        - tls_ecdhe_ecdsa_with_aes_256_gcm_sha384
+    authentication_certificates:
+      - name: cert1
+        data: "{{ lookup('file', 'cert1.txt') }}"
+    ssl_certificates:
+      - name: cert2
+        password: your-password
+        data: "{{ lookup('file', 'cert2.txt') }}"
+    gateway_ip_configurations:
+      - subnet:
+          id: "{{ subnet_output.state.id }}"
+        name: app_gateway_ip_config
+    frontend_ip_configurations:
+      - subnet:
+          id: "{{ subnet_output.state.id }}"
+        name: sample_gateway_frontend_ip_config
+    frontend_ports:
+      - port: 90
+        name: ag_frontend_port
+      - port: 80
+        name: http_frontend_port
+    backend_address_pools:
+      - backend_addresses:
+          - ip_address: 10.0.0.4
+        name: test_backend_address_pool
+    probes:
+     - name: custom_probe
+       protocol: http
+       path: /healthz
+       interval: 30
+       timeout: 30
+       unhealthy_threshold: 3
+       pick_host_name_from_backend_http_settings: true
+    backend_http_settings_collection:
+      - port: 80
+        protocol: http
+        cookie_based_affinity: enabled
+        probe: custom_probe
+        name: sample_appgateway_http_settings
+    http_listeners:
+      - frontend_ip_configuration: sample_gateway_frontend_ip_config
+        frontend_port: ag_frontend_port
+        protocol: https
+        ssl_certificate: cert2
+        name: sample_http_listener
+      - frontend_ip_configuration: sample_gateway_frontend_ip_config
+        frontend_port: http_frontend_port
+        protocol: http
+        name: http_listener
+    request_routing_rules:
+      - rule_type: Basic
+        backend_address_pool: test_backend_address_pool
+        backend_http_settings: sample_appgateway_http_settings
+        http_listener: sample_http_listener
+        name: rule1
+      - rule_type: Basic
+        http_listener: http_listener
+        redirect_configuration: redirect_site_to_https
+        name: http_redirect_rule
+    redirect_configurations:
+     - redirect_type: permanent
+       target_listener: sample_http_listener
+       include_path: true
+       include_query_string: true
+       name: redirect_site_to_https
+  register: output
+- name: Assert the resource instance is well created
+  assert:
+    that:
+      - output.changed
+
 - name: Try to update instance of Application Gateway - no change
   azure_rm_appgateway:
     resource_group: "{{ resource_group }}"