VMware: Add missing HA admission control policies in vmware_cluster_ha (#60233)

* Add missing HA admission control policies
* Add new parameter host_isolation_response
* Bugfix: 'das_vm_config' referenced before assignment
* Implement test cases

lib/ansible/modules/cloud/vmware/vmware_cluster_ha.py

@@ -7,6 +7,7 @@
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
 from __future__ import absolute_import, division, print_function
+
 __metaclass__ = type
 
 ANSIBLE_METADATA = {
@@ -65,19 +66,66 @@ options:
       type: str
       choices: ['vmAndAppMonitoring', 'vmMonitoringOnly', 'vmMonitoringDisabled']
       default: 'vmMonitoringDisabled'
-    ha_failover_level:
+    host_isolation_response:
+      description:
+      - Indicates whether or VMs should be powered off if a host determines that it is isolated from the rest of the compute resource.
+      - If set to C(none), do not power off VMs in the event of a host network isolation.
+      - If set to C(powerOff), power off VMs in the event of a host network isolation.
+      - If set to C(shutdown), shut down VMs guest operating system in the event of a host network isolation.
+      type: str
+      choices: ['none', 'powerOff', 'shutdown']
+      default: 'none'
+    slot_based_admission_control:
       description:
-      - Number of host failures that should be tolerated, still guaranteeing sufficient resources to
-        restart virtual machines on available hosts.
-      - Accepts integer values only.
+      - Configure slot based admission control policy.
+      - C(slot_based_admission_control), C(reservation_based_admission_control) and C(failover_host_admission_control) are mutually exclusive.
+      suboptions:
+        failover_level:
+          description:
+            - Number of host failures that should be tolerated.
           type: int
-      default: 2
-    ha_admission_control_enabled:
+          required: true
+      type: dict
+    reservation_based_admission_control:
+      description:
+      - Configure reservation based admission control policy.
+      - C(slot_based_admission_control), C(reservation_based_admission_control) and C(failover_host_admission_control) are mutually exclusive.
+      suboptions:
+        failover_level:
           description:
-      - Determines if strict admission control is enabled.
-      - It is recommended to set this parameter to C(True), please refer documentation for more details.
-      default: True
+            - Number of host failures that should be tolerated.
+          type: int
+          required: true
+        auto_compute_percentages:
+          description:
+            - By default, C(failover_level) is used to calculate C(cpu_failover_resources_percent) and C(memory_failover_resources_percent).
+              If a user wants to override the percentage values, he has to set this field to false.
           type: bool
+          default: true
+        cpu_failover_resources_percent:
+          description:
+          - Percentage of CPU resources in the cluster to reserve for failover.
+            Ignored if C(auto_compute_percentages) is not set to false.
+          type: int
+          default: 50
+        memory_failover_resources_percent:
+          description:
+          - Percentage of memory resources in the cluster to reserve for failover.
+            Ignored if C(auto_compute_percentages) is not set to false.
+          type: int
+          default: 50
+      type: dict
+    failover_host_admission_control:
+      description:
+      - Configure dedicated failover hosts.
+      - C(slot_based_admission_control), C(reservation_based_admission_control) and C(failover_host_admission_control) are mutually exclusive.
+      suboptions:
+        failover_hosts:
+          description:
+            - List of dedicated failover hosts.
+          type: list
+          required: true
+      type: dict
     ha_vm_failure_interval:
       description:
       - The number of seconds after which virtual machine is declared as failed
@@ -129,7 +177,7 @@ extends_documentation_fragment: vmware.documentation
 '''
 
 EXAMPLES = r"""
-- name: Enable HA
+- name: Enable HA without admission control
   vmware_cluster_ha:
     hostname: '{{ vcenter_hostname }}'
     username: '{{ vcenter_username }}'
@@ -139,7 +187,7 @@ EXAMPLES = r"""
     enable_ha: yes
   delegate_to: localhost
 
-- name: Enable HA and VM monitoring
+- name: Enable HA and VM monitoring without admission control
   vmware_cluster_ha:
     hostname: "{{ vcenter_hostname }}"
     username: "{{ vcenter_username }}"
@@ -151,6 +199,21 @@ EXAMPLES = r"""
     ha_vm_monitoring: vmMonitoringOnly
     enable_vsan: True
   delegate_to: localhost
+
+- name: Enable HA with admission control reserving 50% of resources for HA
+  vmware_cluster_ha:
+    hostname: '{{ vcenter_hostname }}'
+    username: '{{ vcenter_username }}'
+    password: '{{ vcenter_password }}'
+    datacenter_name: datacenter
+    cluster_name: cluster
+    enable_ha: yes
+    reservation_based_admission_control:
+      auto_compute_percentages: False
+      failover_level: 1
+      cpu_failover_resources_percent: 50
+      memory_failover_resources_percent: 50
+  delegate_to: localhost
 """
 
 RETURN = r"""#
@@ -175,6 +238,15 @@ class VMwareCluster(PyVmomi):
         self.enable_ha = module.params['enable_ha']
         self.datacenter = None
         self.cluster = None
+        self.host_isolation_response = getattr(vim.cluster.DasVmSettings.IsolationResponse, self.params.get('host_isolation_response'))
+
+        if self.enable_ha and (
+                self.params.get('slot_based_admission_control') or
+                self.params.get('reservation_based_admission_control') or
+                self.params.get('failover_host_admission_control')):
+            self.ha_admission_control = True
+        else:
+            self.ha_admission_control = False
 
         self.datacenter = find_datacenter_by_name(self.content, self.datacenter_name)
         if self.datacenter is None:
@@ -184,6 +256,23 @@ class VMwareCluster(PyVmomi):
         if self.cluster is None:
             self.module.fail_json(msg="Cluster %s does not exist." % self.cluster_name)
 
+    def get_failover_hosts(self):
+        """
+        Get failover hosts for failover_host_admission_control policy
+        Returns: List of ESXi hosts sorted by name
+
+        """
+        policy = self.params.get('failover_host_admission_control')
+        hosts = []
+        all_hosts = dict((h.name, h) for h in self.get_all_hosts_by_cluster(self.cluster_name))
+        for host in policy.get('failover_hosts'):
+            if host in all_hosts:
+                hosts.append(all_hosts.get(host))
+            else:
+                self.module.fail_json(msg="Host %s is not a member of cluster %s." % (host, self.cluster_name))
+        hosts.sort(key=lambda h: h.name)
+        return hosts
+
     def check_ha_config_diff(self):
         """
         Check HA configuration diff
@@ -191,19 +280,47 @@ class VMwareCluster(PyVmomi):
 
         """
         das_config = self.cluster.configurationEx.dasConfig
-        if das_config.enabled != self.enable_ha or \
-                das_config.admissionControlPolicy.failoverLevel != self.params.get('ha_failover_level') or \
-                das_config.vmMonitoring != self.params.get('ha_vm_monitoring') or \
-                das_config.hostMonitoring != self.params.get('ha_host_monitoring') or \
-                das_config.admissionControlPolicy.failoverLevel != self.params.get('ha_failover_level') or \
-                das_config.admissionControlEnabled != self.params.get('ha_admission_control_enabled') or \
-                das_config.defaultVmSettings.restartPriority != self.params.get('ha_restart_priority') or \
-                das_config.defaultVmSettings.vmToolsMonitoringSettings.vmMonitoring != self.params.get('ha_vm_monitoring') or \
-                das_config.defaultVmSettings.vmToolsMonitoringSettings.failureInterval != self.params.get('ha_vm_failure_interval') or \
-                das_config.defaultVmSettings.vmToolsMonitoringSettings.minUpTime != self.params.get('ha_vm_min_up_time') or \
-                das_config.defaultVmSettings.vmToolsMonitoringSettings.maxFailures != self.params.get('ha_vm_max_failures') or \
-                das_config.defaultVmSettings.vmToolsMonitoringSettings.maxFailureWindow != self.params.get('ha_vm_max_failure_window'):
+        if das_config.enabled != self.enable_ha:
+            return True
+
+        if self.enable_ha and (
+                das_config.vmMonitoring != self.params.get('ha_vm_monitoring') or
+                das_config.hostMonitoring != self.params.get('ha_host_monitoring') or
+                das_config.admissionControlEnabled != self.ha_admission_control or
+                das_config.defaultVmSettings.restartPriority != self.params.get('ha_restart_priority') or
+                das_config.defaultVmSettings.isolationResponse != self.host_isolation_response or
+                das_config.defaultVmSettings.vmToolsMonitoringSettings.vmMonitoring != self.params.get('ha_vm_monitoring') or
+                das_config.defaultVmSettings.vmToolsMonitoringSettings.failureInterval != self.params.get('ha_vm_failure_interval') or
+                das_config.defaultVmSettings.vmToolsMonitoringSettings.minUpTime != self.params.get('ha_vm_min_up_time') or
+                das_config.defaultVmSettings.vmToolsMonitoringSettings.maxFailures != self.params.get('ha_vm_max_failures') or
+                das_config.defaultVmSettings.vmToolsMonitoringSettings.maxFailureWindow != self.params.get('ha_vm_max_failure_window')):
+            return True
+
+        if self.ha_admission_control:
+            if self.params.get('slot_based_admission_control'):
+                policy = self.params.get('slot_based_admission_control')
+                if not isinstance(das_config.admissionControlPolicy, vim.cluster.FailoverLevelAdmissionControlPolicy) or \
+                        das_config.admissionControlPolicy.failoverLevel != policy.get('failover_level'):
                     return True
+            elif self.params.get('reservation_based_admission_control'):
+                policy = self.params.get('reservation_based_admission_control')
+                auto_compute_percentages = policy.get('auto_compute_percentages')
+                if not isinstance(das_config.admissionControlPolicy, vim.cluster.FailoverResourcesAdmissionControlPolicy) or \
+                        das_config.admissionControlPolicy.autoComputePercentages != auto_compute_percentages or \
+                        das_config.admissionControlPolicy.failoverLevel != policy.get('failover_level'):
+                    return True
+                if not auto_compute_percentages:
+                    if das_config.admissionControlPolicy.cpuFailoverResourcesPercent != policy.get('cpu_failover_resources_percent') or \
+                            das_config.admissionControlPolicy.memoryFailoverResourcesPercent != policy.get('memory_failover_resources_percent'):
+                        return True
+            elif self.params.get('failover_host_admission_control'):
+                policy = self.params.get('failover_host_admission_control')
+                if not isinstance(das_config.admissionControlPolicy, vim.cluster.FailoverHostAdmissionControlPolicy):
+                    return True
+                das_config.admissionControlPolicy.failoverHosts.sort(key=lambda h: h.name)
+                if das_config.admissionControlPolicy.failoverHosts != self.get_failover_hosts():
+                    return True
+
         return False
 
     def configure_ha(self):
@@ -218,15 +335,11 @@ class VMwareCluster(PyVmomi):
                 cluster_config_spec = vim.cluster.ConfigSpecEx()
                 cluster_config_spec.dasConfig = vim.cluster.DasConfigInfo()
                 cluster_config_spec.dasConfig.enabled = self.enable_ha
-                cluster_config_spec.dasConfig.admissionControlPolicy = vim.cluster.FailoverLevelAdmissionControlPolicy()
-                cluster_config_spec.dasConfig.admissionControlPolicy.failoverLevel = self.params.get('ha_failover_level')
 
-                ha_vm_monitoring = self.params.get('ha_vm_monitoring')
-                das_vm_config = None
-                if ha_vm_monitoring in ['vmMonitoringOnly', 'vmAndAppMonitoring']:
+                if self.enable_ha:
                     vm_tool_spec = vim.cluster.VmToolsMonitoringSettings()
                     vm_tool_spec.enabled = True
-                    vm_tool_spec.vmMonitoring = ha_vm_monitoring
+                    vm_tool_spec.vmMonitoring = self.params.get('ha_vm_monitoring')
                     vm_tool_spec.failureInterval = self.params.get('ha_vm_failure_interval')
                     vm_tool_spec.minUpTime = self.params.get('ha_vm_min_up_time')
                     vm_tool_spec.maxFailures = self.params.get('ha_vm_max_failures')
@@ -234,14 +347,36 @@ class VMwareCluster(PyVmomi):
 
                     das_vm_config = vim.cluster.DasVmSettings()
                     das_vm_config.restartPriority = self.params.get('ha_restart_priority')
-                    das_vm_config.isolationResponse = None
+                    das_vm_config.isolationResponse = self.host_isolation_response
                     das_vm_config.vmToolsMonitoringSettings = vm_tool_spec
+                    cluster_config_spec.dasConfig.defaultVmSettings = das_vm_config
+
+                cluster_config_spec.dasConfig.admissionControlEnabled = self.ha_admission_control
 
-                cluster_config_spec.dasConfig.admissionControlEnabled = self.params.get('ha_admission_control_enabled')
+                if self.ha_admission_control:
+                    if self.params.get('slot_based_admission_control'):
+                        cluster_config_spec.dasConfig.admissionControlPolicy = vim.cluster.FailoverLevelAdmissionControlPolicy()
+                        policy = self.params.get('slot_based_admission_control')
+                        cluster_config_spec.dasConfig.admissionControlPolicy.failoverLevel = policy.get('failover_level')
+                    elif self.params.get('reservation_based_admission_control'):
+                        cluster_config_spec.dasConfig.admissionControlPolicy = vim.cluster.FailoverResourcesAdmissionControlPolicy()
+                        policy = self.params.get('reservation_based_admission_control')
+                        auto_compute_percentages = policy.get('auto_compute_percentages')
+                        cluster_config_spec.dasConfig.admissionControlPolicy.autoComputePercentages = auto_compute_percentages
+                        cluster_config_spec.dasConfig.admissionControlPolicy.failoverLevel = policy.get('failover_level')
+                        if not auto_compute_percentages:
+                            cluster_config_spec.dasConfig.admissionControlPolicy.cpuFailoverResourcesPercent = \
+                                policy.get('cpu_failover_resources_percent')
+                            cluster_config_spec.dasConfig.admissionControlPolicy.memoryFailoverResourcesPercent = \
+                                policy.get('memory_failover_resources_percent')
+                    elif self.params.get('failover_host_admission_control'):
+                        cluster_config_spec.dasConfig.admissionControlPolicy = vim.cluster.FailoverHostAdmissionControlPolicy()
+                        policy = self.params.get('failover_host_admission_control')
+                        cluster_config_spec.dasConfig.admissionControlPolicy.failoverHosts = self.get_failover_hosts()
 
                 cluster_config_spec.dasConfig.hostMonitoring = self.params.get('ha_host_monitoring')
-                cluster_config_spec.dasConfig.vmMonitoring = ha_vm_monitoring
-                cluster_config_spec.dasConfig.defaultVmSettings = das_vm_config
+                cluster_config_spec.dasConfig.vmMonitoring = self.params.get('ha_vm_monitoring')
+
                 try:
                     task = self.cluster.ReconfigureComputeResource_Task(cluster_config_spec, True)
                     changed, result = wait_for_task(task)
@@ -267,10 +402,12 @@ def main():
         datacenter=dict(type='str', required=True, aliases=['datacenter_name']),
         # HA
         enable_ha=dict(type='bool', default=False),
-        ha_failover_level=dict(type='int', default=2),
         ha_host_monitoring=dict(type='str',
                                 default='enabled',
                                 choices=['enabled', 'disabled']),
+        host_isolation_response=dict(type='str',
+                                     default='none',
+                                     choices=['none', 'powerOff', 'shutdown']),
         # HA VM Monitoring related parameters
         ha_vm_monitoring=dict(type='str',
                               choices=['vmAndAppMonitoring', 'vmMonitoringOnly', 'vmMonitoringDisabled'],
@@ -283,12 +420,27 @@ def main():
         ha_restart_priority=dict(type='str',
                                  choices=['high', 'low', 'medium', 'disabled'],
                                  default='medium'),
-        ha_admission_control_enabled=dict(type='bool', default=True),
+        # HA Admission Control related parameters
+        slot_based_admission_control=dict(type='dict', options=dict(
+            failover_level=dict(type='int', required=True),
+        )),
+        reservation_based_admission_control=dict(type='dict', options=dict(
+            auto_compute_percentages=dict(type='bool', default=True),
+            failover_level=dict(type='int', required=True),
+            cpu_failover_resources_percent=dict(type='int', default=50),
+            memory_failover_resources_percent=dict(type='int', default=50),
+        )),
+        failover_host_admission_control=dict(type='dict', options=dict(
+            failover_hosts=dict(type='list', elements='str', required=True),
+        )),
     ))
 
     module = AnsibleModule(
         argument_spec=argument_spec,
         supports_check_mode=True,
+        mutually_exclusive=[
+            ['slot_based_admission_control', 'reservation_based_admission_control', 'failover_host_admission_control']
+        ]
     )
 
     vmware_cluster_ha = VMwareCluster(module)

test/integration/targets/vmware_cluster_ha/tasks/main.yml

@@ -33,7 +33,84 @@
     that:
         - "{{ cluster_ha_result_0001.changed == true }}"
 
-# Testcase 0002: Disable HA
+# Testcase 0002: Enable Slot based Admission Control
+- name: Enable Slot based Admission Control
+  vmware_cluster_ha:
+    validate_certs: False
+    hostname: "{{ vcenter_hostname }}"
+    username: "{{ vcenter_username }}"
+    password: "{{ vcenter_password }}"
+    datacenter_name: "{{ dc1 }}"
+    cluster_name: test_cluster_ha
+    enable_ha: yes
+    slot_based_admission_control:
+      failover_level: 1
+  register: cluster_ha_result_0002
+
+- name: Ensure Admission Cotrol is enabled
+  assert:
+    that:
+        - "{{ cluster_ha_result_0002.changed == true }}"
+
+# Testcase 0003: Enable Cluster resource Percentage based Admission Control
+- name: Enable Cluster resource Percentage based Admission Control
+  vmware_cluster_ha:
+    validate_certs: False
+    hostname: "{{ vcenter_hostname }}"
+    username: "{{ vcenter_username }}"
+    password: "{{ vcenter_password }}"
+    datacenter_name: "{{ dc1 }}"
+    cluster_name: test_cluster_ha
+    enable_ha: yes
+    reservation_based_admission_control:
+      auto_compute_percentages: false
+      failover_level: 1
+      cpu_failover_resources_percent: 33
+      memory_failover_resources_percent: 33
+  register: cluster_ha_result_0003
+
+- name: Ensure Admission Cotrol is enabled
+  assert:
+    that:
+        - "{{ cluster_ha_result_0003.changed == true }}"
+
+# Testcase 0004: Set Isolation Response to powerOff
+- name: Set Isolation Response to powerOff
+  vmware_cluster_ha:
+    validate_certs: False
+    hostname: "{{ vcenter_hostname }}"
+    username: "{{ vcenter_username }}"
+    password: "{{ vcenter_password }}"
+    datacenter_name: "{{ dc1 }}"
+    cluster_name: test_cluster_ha
+    enable_ha: yes
+    host_isolation_response: 'powerOff'
+  register: cluster_ha_result_0004
+
+- name: Ensure Isolation Response is enabled
+  assert:
+    that:
+        - "{{ cluster_ha_result_0004.changed == true }}"
+
+# Testcase 0005: Set Isolation Response to shutdown
+- name: Set Isolation Response to shutdown
+  vmware_cluster_ha:
+    validate_certs: False
+    hostname: "{{ vcenter_hostname }}"
+    username: "{{ vcenter_username }}"
+    password: "{{ vcenter_password }}"
+    datacenter_name: "{{ dc1 }}"
+    cluster_name: test_cluster_ha
+    enable_ha: yes
+    host_isolation_response: 'shutdown'
+  register: cluster_ha_result_0005
+
+- name: Ensure Isolation Response is enabled
+  assert:
+    that:
+        - "{{ cluster_ha_result_0005.changed == true }}"
+
+# Testcase 0006: Disable HA
 - name: Disable HA
   vmware_cluster_ha:
     validate_certs: False
@@ -43,12 +120,12 @@
     datacenter_name: "{{ dc1 }}"
     cluster_name: test_cluster_ha
     enable_ha: no
-  register: cluster_ha_result_0002
+  register: cluster_ha_result_0006
 
 - name: Ensure HA is disabled
   assert:
     that:
-        - "{{ cluster_ha_result_0002.changed == true }}"
+        - "{{ cluster_ha_result_0006.changed == true }}"
 
 # Delete test cluster
 - name: Delete test cluster