diff --git a/lib/ansible/modules/network/netscaler/netscaler_gslb_service.py b/lib/ansible/modules/network/netscaler/netscaler_gslb_service.py
new file mode 100644
index 00000000000..6f372c2bb24
--- /dev/null
+++ b/lib/ansible/modules/network/netscaler/netscaler_gslb_service.py
@@ -0,0 +1,695 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+#  Copyright (c) 2017 Citrix Systems
+# 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 = {'status': ['preview'],
+                    'supported_by': 'community',
+                    'metadata_version': '1.0'}
+
+
+DOCUMENTATION = '''
+---
+module: netscaler_gslb_service
+short_description: Manage gslb service entities in Netscaler.
+description:
+    - Manage gslb service entities in Netscaler.
+
+version_added: "2.4"
+
+author: George Nikolopoulos (@giorgos-nikolopoulos)
+
+options:
+
+    servicename:
+        description:
+            - >-
+                Name for the GSLB service. Must begin with an ASCII alphanumeric or underscore C(_) character, and
+                must contain only ASCII alphanumeric, underscore C(_), hash C(#), period C(.), space, colon C(:), at C(@),
+                equals C(=), and hyphen C(-) characters. Can be changed after the GSLB service is created.
+            - >-
+            - "Minimum length = 1"
+
+    cnameentry:
+        description:
+            - "Canonical name of the GSLB service. Used in CNAME-based GSLB."
+            - "Minimum length = 1"
+
+
+    servername:
+        description:
+            - "Name of the server hosting the GSLB service."
+            - "Minimum length = 1"
+
+    servicetype:
+        choices:
+            - 'HTTP'
+            - 'FTP'
+            - 'TCP'
+            - 'UDP'
+            - 'SSL'
+            - 'SSL_BRIDGE'
+            - 'SSL_TCP'
+            - 'NNTP'
+            - 'ANY'
+            - 'SIP_UDP'
+            - 'SIP_TCP'
+            - 'SIP_SSL'
+            - 'RADIUS'
+            - 'RDP'
+            - 'RTSP'
+            - 'MYSQL'
+            - 'MSSQL'
+            - 'ORACLE'
+        description:
+            - "Type of service to create."
+
+    port:
+        description:
+            - "Port on which the load balancing entity represented by this GSLB service listens."
+            - "Minimum value = 1"
+            - "Range 1 - 65535"
+            - "* in CLI is represented as 65535 in NITRO API"
+
+    publicip:
+        description:
+            - >-
+                The public IP address that a NAT device translates to the GSLB service's private IP address.
+                Optional.
+
+    publicport:
+        description:
+            - >-
+                The public port associated with the GSLB service's public IP address. The port is mapped to the
+                service's private port number. Applicable to the local GSLB service. Optional.
+
+    maxclient:
+        description:
+            - >-
+                The maximum number of open connections that the service can support at any given time. A GSLB service
+                whose connection count reaches the maximum is not considered when a GSLB decision is made, until the
+                connection count drops below the maximum.
+            - "Minimum value = C(0)"
+            - "Maximum value = C(4294967294)"
+
+    healthmonitor:
+        description:
+            - "Monitor the health of the GSLB service."
+        type: bool
+
+    sitename:
+        description:
+            - "Name of the GSLB site to which the service belongs."
+            - "Minimum length = 1"
+
+    cip:
+        choices:
+            - 'enabled'
+            - 'disabled'
+        description:
+            - >-
+                In the request that is forwarded to the GSLB service, insert a header that stores the client's IP
+                address. Client IP header insertion is used in connection-proxy based site persistence.
+
+    cipheader:
+        description:
+            - >-
+                Name for the HTTP header that stores the client's IP address. Used with the Client IP option. If
+                client IP header insertion is enabled on the service and a name is not specified for the header, the
+                NetScaler appliance uses the name specified by the cipHeader parameter in the set ns param command
+                or, in the GUI, the Client IP Header parameter in the Configure HTTP Parameters dialog box.
+            - "Minimum length = 1"
+
+    sitepersistence:
+        choices:
+            - 'ConnectionProxy'
+            - 'HTTPRedirect'
+            - 'NONE'
+        description:
+            - "Use cookie-based site persistence. Applicable only to C(HTTP) and C(SSL) GSLB services."
+
+    siteprefix:
+        description:
+            - >-
+                The site's prefix string. When the service is bound to a GSLB virtual server, a GSLB site domain is
+                generated internally for each bound service-domain pair by concatenating the site prefix of the
+                service and the name of the domain. If the special string NONE is specified, the site-prefix string
+                is unset. When implementing HTTP redirect site persistence, the NetScaler appliance redirects GSLB
+                requests to GSLB services by using their site domains.
+
+    clttimeout:
+        description:
+            - >-
+                Idle time, in seconds, after which a client connection is terminated. Applicable if connection proxy
+                based site persistence is used.
+            - "Minimum value = 0"
+            - "Maximum value = 31536000"
+
+    maxbandwidth:
+        description:
+            - >-
+                Integer specifying the maximum bandwidth allowed for the service. A GSLB service whose bandwidth
+                reaches the maximum is not considered when a GSLB decision is made, until its bandwidth consumption
+                drops below the maximum.
+
+    downstateflush:
+        choices:
+            - 'enabled'
+            - 'disabled'
+        description:
+            - >-
+                Flush all active transactions associated with the GSLB service when its state transitions from UP to
+                DOWN. Do not enable this option for services that must complete their transactions. Applicable if
+                connection proxy based site persistence is used.
+
+    maxaaausers:
+        description:
+            - >-
+                Maximum number of SSL VPN users that can be logged on concurrently to the VPN virtual server that is
+                represented by this GSLB service. A GSLB service whose user count reaches the maximum is not
+                considered when a GSLB decision is made, until the count drops below the maximum.
+            - "Minimum value = C(0)"
+            - "Maximum value = C(65535)"
+
+    monthreshold:
+        description:
+            - >-
+                Monitoring threshold value for the GSLB service. If the sum of the weights of the monitors that are
+                bound to this GSLB service and are in the UP state is not equal to or greater than this threshold
+                value, the service is marked as DOWN.
+            - "Minimum value = C(0)"
+            - "Maximum value = C(65535)"
+
+    hashid:
+        description:
+            - "Unique hash identifier for the GSLB service, used by hash based load balancing methods."
+            - "Minimum value = C(1)"
+
+    comment:
+        description:
+            - "Any comments that you might want to associate with the GSLB service."
+
+    appflowlog:
+        choices:
+            - 'enabled'
+            - 'disabled'
+        description:
+            - "Enable logging appflow flow information."
+
+    ipaddress:
+        description:
+            - >-
+                IP address for the GSLB service. Should represent a load balancing, content switching, or VPN virtual
+                server on the NetScaler appliance, or the IP address of another load balancing device.
+
+    monitor_bindings:
+        description:
+            - Bind monitors to this gslb service
+        suboptions:
+
+            weight:
+                description:
+                    - Weight to assign to the monitor-service binding.
+                    - A larger number specifies a greater weight.
+                    - Contributes to the monitoring threshold, which determines the state of the service.
+                    - Minimum value = C(1)
+                    - Maximum value = C(100)
+
+            monitor_name:
+                description:
+                    - Monitor name.
+
+extends_documentation_fragment: netscaler
+requirements:
+    - nitro python sdk
+'''
+
+EXAMPLES = '''
+- name: Setup gslb service 2
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: present
+
+    servicename: gslb-service-2
+    cnameentry: example.com
+    sitename: gslb-site-1
+'''
+
+RETURN = '''
+loglines:
+    description: list of logged messages by the module
+    returned: always
+    type: list
+    sample: "['message 1', 'message 2']"
+
+msg:
+    description: Message detailing the failure reason
+    returned: failure
+    type: string
+    sample: "Action does not exist"
+
+diff:
+    description: List of differences between the actual configured object and the configuration specified in the module
+    returned: failure
+    type: dictionary
+    sample: "{ 'targetlbvserver': 'difference. ours: (str) server1 other: (str) server2' }"
+'''
+
+import copy
+
+
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.netscaler import (
+    ConfigProxy,
+    get_nitro_client,
+    netscaler_common_arguments,
+    log,
+    loglines,
+    ensure_feature_is_enabled,
+    monkey_patch_nitro_api,
+    get_immutables_intersection,
+)
+
+try:
+    monkey_patch_nitro_api()
+    from nssrc.com.citrix.netscaler.nitro.resource.config.gslb.gslbservice import gslbservice
+    from nssrc.com.citrix.netscaler.nitro.resource.config.gslb.gslbservice_lbmonitor_binding import gslbservice_lbmonitor_binding
+    from nssrc.com.citrix.netscaler.nitro.exception.nitro_exception import nitro_exception
+    PYTHON_SDK_IMPORTED = True
+except ImportError as e:
+    PYTHON_SDK_IMPORTED = False
+
+
+def gslb_service_exists(client, module):
+    if gslbservice.count_filtered(client, 'servicename:%s' % module.params['servicename']) > 0:
+        return True
+    else:
+        return False
+
+
+def gslb_service_identical(client, module, gslb_service_proxy):
+    gslb_service_list = gslbservice.get_filtered(client, 'servicename:%s' % module.params['servicename'])
+    diff_dict = gslb_service_proxy.diff_object(gslb_service_list[0])
+    # Ignore ip attribute missing
+    if 'ip' in diff_dict:
+        del diff_dict['ip']
+    if len(diff_dict) == 0:
+        return True
+    else:
+        return False
+
+
+def get_actual_monitor_bindings(client, module):
+    log('get_actual_monitor_bindings')
+    # Get actual monitor bindings and index them by monitor_name
+    actual_monitor_bindings = {}
+    if gslbservice_lbmonitor_binding.count(client, servicename=module.params['servicename']) != 0:
+        # Get all monitor bindings associated with the named gslb vserver
+        fetched_bindings = gslbservice_lbmonitor_binding.get(client, servicename=module.params['servicename'])
+        # index by monitor name
+        for binding in fetched_bindings:
+            # complete_missing_attributes(binding, gslbservice_lbmonitor_binding_rw_attrs, fill_value=None)
+            actual_monitor_bindings[binding.monitor_name] = binding
+    return actual_monitor_bindings
+
+
+def get_configured_monitor_bindings(client, module):
+    log('get_configured_monitor_bindings')
+    configured_monitor_proxys = {}
+    gslbservice_lbmonitor_binding_rw_attrs = [
+        'weight',
+        'servicename',
+        'monitor_name',
+    ]
+    # Get configured monitor bindings and index them by monitor_name
+    if module.params['monitor_bindings'] is not None:
+        for configured_monitor_bindings in module.params['monitor_bindings']:
+            binding_values = copy.deepcopy(configured_monitor_bindings)
+            binding_values['servicename'] = module.params['servicename']
+            proxy = ConfigProxy(
+                actual=gslbservice_lbmonitor_binding(),
+                client=client,
+                attribute_values_dict=binding_values,
+                readwrite_attrs=gslbservice_lbmonitor_binding_rw_attrs,
+                readonly_attrs=[],
+            )
+            configured_monitor_proxys[configured_monitor_bindings['monitor_name']] = proxy
+    return configured_monitor_proxys
+
+
+def monitor_bindings_identical(client, module):
+    log('monitor_bindings_identical')
+    actual_bindings = get_actual_monitor_bindings(client, module)
+    configured_proxys = get_configured_monitor_bindings(client, module)
+
+    actual_keyset = set(actual_bindings.keys())
+    configured_keyset = set(configured_proxys.keys())
+
+    symmetric_difference = actual_keyset ^ configured_keyset
+    if len(symmetric_difference) != 0:
+        log('Symmetric difference %s' % symmetric_difference)
+        return False
+
+    # Item for item equality test
+    for key, proxy in configured_proxys.items():
+        if not proxy.has_equal_attributes(actual_bindings[key]):
+            log('monitor binding difference %s' % proxy.diff_object(actual_bindings[key]))
+            return False
+
+    # Fallthrough to True result
+    return True
+
+
+def sync_monitor_bindings(client, module):
+    log('sync_monitor_bindings')
+
+    actual_monitor_bindings = get_actual_monitor_bindings(client, module)
+    configured_monitor_proxys = get_configured_monitor_bindings(client, module)
+
+    # Delete actual bindings not in configured bindings
+    for monitor_name, actual_binding in actual_monitor_bindings.items():
+        if monitor_name not in configured_monitor_proxys.keys():
+            log('Deleting absent binding for monitor %s' % monitor_name)
+            log('dir is %s' % dir(actual_binding))
+            gslbservice_lbmonitor_binding.delete(client, actual_binding)
+
+    # Delete and re-add actual bindings that differ from configured
+    for proxy_key, binding_proxy in configured_monitor_proxys.items():
+        if proxy_key in actual_monitor_bindings:
+            actual_binding = actual_monitor_bindings[proxy_key]
+            if not binding_proxy.has_equal_attributes(actual_binding):
+                log('Deleting differing binding for monitor %s' % actual_binding.monitor_name)
+                log('dir %s' % dir(actual_binding))
+                log('attribute monitor_name %s' % getattr(actual_binding, 'monitor_name'))
+                log('attribute monitorname %s' % getattr(actual_binding, 'monitorname', None))
+                gslbservice_lbmonitor_binding.delete(client, actual_binding)
+                log('Adding anew binding for monitor %s' % binding_proxy.monitor_name)
+                binding_proxy.add()
+
+    # Add configured monitors that are missing from actual
+    for proxy_key, binding_proxy in configured_monitor_proxys.items():
+        if proxy_key not in actual_monitor_bindings.keys():
+            log('Adding monitor binding for monitor %s' % binding_proxy.monitor_name)
+            binding_proxy.add()
+
+
+def diff_list(client, module, gslb_service_proxy):
+    gslb_service_list = gslbservice.get_filtered(client, 'servicename:%s' % module.params['servicename'])
+    diff_list = gslb_service_proxy.diff_object(gslb_service_list[0])
+    if 'ip' in diff_list:
+        del diff_list['ip']
+    return diff_list
+
+
+def all_identical(client, module, gslb_service_proxy):
+    return gslb_service_identical(client, module, gslb_service_proxy) and monitor_bindings_identical(client, module)
+
+
+def main():
+
+    module_specific_arguments = dict(
+        servicename=dict(type='str'),
+        cnameentry=dict(type='str'),
+        servername=dict(type='str'),
+        servicetype=dict(
+            type='str',
+            choices=[
+                'HTTP',
+                'FTP',
+                'TCP',
+                'UDP',
+                'SSL',
+                'SSL_BRIDGE',
+                'SSL_TCP',
+                'NNTP',
+                'ANY',
+                'SIP_UDP',
+                'SIP_TCP',
+                'SIP_SSL',
+                'RADIUS',
+                'RDP',
+                'RTSP',
+                'MYSQL',
+                'MSSQL',
+                'ORACLE',
+            ]
+        ),
+        port=dict(type='int'),
+        publicip=dict(type='str'),
+        publicport=dict(type='int'),
+        maxclient=dict(type='float'),
+        healthmonitor=dict(type='bool'),
+        sitename=dict(type='str'),
+        cip=dict(
+            type='str',
+            choices=[
+                'enabled',
+                'disabled',
+            ]
+        ),
+        cipheader=dict(type='str'),
+        sitepersistence=dict(
+            type='str',
+            choices=[
+                'ConnectionProxy',
+                'HTTPRedirect',
+                'NONE',
+            ]
+        ),
+        siteprefix=dict(type='str'),
+        clttimeout=dict(type='float'),
+        maxbandwidth=dict(type='float'),
+        downstateflush=dict(
+            type='str',
+            choices=[
+                'enabled',
+                'disabled',
+            ]
+        ),
+        maxaaausers=dict(type='float'),
+        monthreshold=dict(type='float'),
+        hashid=dict(type='float'),
+        comment=dict(type='str'),
+        appflowlog=dict(
+            type='str',
+            choices=[
+                'enabled',
+                'disabled',
+            ]
+        ),
+        ipaddress=dict(type='str'),
+    )
+
+    hand_inserted_arguments = dict(
+        monitor_bindings=dict(type='list'),
+    )
+
+    argument_spec = dict()
+
+    argument_spec.update(netscaler_common_arguments)
+    argument_spec.update(module_specific_arguments)
+    argument_spec.update(hand_inserted_arguments)
+
+    module = AnsibleModule(
+        argument_spec=argument_spec,
+        supports_check_mode=True,
+    )
+    module_result = dict(
+        changed=False,
+        failed=False,
+        loglines=loglines,
+    )
+
+    # Fail the module if imports failed
+    if not PYTHON_SDK_IMPORTED:
+        module.fail_json(msg='Could not load nitro python sdk')
+
+    # Fallthrough to rest of execution
+    client = get_nitro_client(module)
+
+    try:
+        client.login()
+    except nitro_exception as e:
+        msg = "nitro exception during login. errorcode=%s, message=%s" % (str(e.errorcode), e.message)
+        module.fail_json(msg=msg)
+    except Exception as e:
+        if str(type(e)) == "<class 'requests.exceptions.ConnectionError'>":
+            module.fail_json(msg='Connection error %s' % str(e))
+        elif str(type(e)) == "<class 'requests.exceptions.SSLError'>":
+            module.fail_json(msg='SSL Error %s' % str(e))
+        else:
+            module.fail_json(msg='Unexpected error during login %s' % str(e))
+
+    readwrite_attrs = [
+        'servicename',
+        'cnameentry',
+        'ip',
+        'servername',
+        'servicetype',
+        'port',
+        'publicip',
+        'publicport',
+        'maxclient',
+        'healthmonitor',
+        'sitename',
+        'cip',
+        'cipheader',
+        'sitepersistence',
+        'siteprefix',
+        'clttimeout',
+        'maxbandwidth',
+        'downstateflush',
+        'maxaaausers',
+        'monthreshold',
+        'hashid',
+        'comment',
+        'appflowlog',
+        'ipaddress',
+    ]
+
+    readonly_attrs = [
+        'gslb',
+        'svrstate',
+        'svreffgslbstate',
+        'gslbthreshold',
+        'gslbsvcstats',
+        'monstate',
+        'preferredlocation',
+        'monitor_state',
+        'statechangetimesec',
+        'tickssincelaststatechange',
+        'threshold',
+        'clmonowner',
+        'clmonview',
+        '__count',
+    ]
+
+    immutable_attrs = [
+        'servicename',
+        'cnameentry',
+        'ip',
+        'servername',
+        'servicetype',
+        'port',
+        'sitename',
+        'state',
+        'cipheader',
+        'cookietimeout',
+        'clttimeout',
+        'svrtimeout',
+        'viewip',
+        'monitor_name_svc',
+        'newname',
+    ]
+
+    transforms = {
+        'healthmonitor': ['bool_yes_no'],
+        'cip': [lambda v: v.upper()],
+        'downstateflush': [lambda v: v.upper()],
+        'appflowlog': [lambda v: v.upper()],
+    }
+
+    # params = copy.deepcopy(module.params)
+    module.params['ip'] = module.params['ipaddress']
+
+    # Instantiate config proxy
+    gslb_service_proxy = ConfigProxy(
+        actual=gslbservice(),
+        client=client,
+        attribute_values_dict=module.params,
+        transforms=transforms,
+        readwrite_attrs=readwrite_attrs,
+        readonly_attrs=readonly_attrs,
+        immutable_attrs=immutable_attrs,
+    )
+
+    try:
+        ensure_feature_is_enabled(client, 'GSLB')
+        # Apply appropriate state
+        if module.params['state'] == 'present':
+            if not gslb_service_exists(client, module):
+                if not module.check_mode:
+                    gslb_service_proxy.add()
+                    sync_monitor_bindings(client, module)
+                    if module.params['save_config']:
+                        client.save_config()
+                module_result['changed'] = True
+            elif not all_identical(client, module, gslb_service_proxy):
+
+                # Check if we try to change value of immutable attributes
+                immutables_changed = get_immutables_intersection(gslb_service_proxy, diff_list(client, module, gslb_service_proxy).keys())
+                if immutables_changed != []:
+                    module.fail_json(
+                        msg='Cannot update immutable attributes %s' % (immutables_changed,),
+                        diff=diff_list(client, module, gslb_service_proxy),
+                        **module_result
+                    )
+
+                # Update main configuration object
+                if not gslb_service_identical(client, module, gslb_service_proxy):
+                    if not module.check_mode:
+                        gslb_service_proxy.update()
+
+                # Update monitor bindigns
+                if not monitor_bindings_identical(client, module):
+                    if not module.check_mode:
+                        sync_monitor_bindings(client, module)
+
+                # Fallthrough to save and change status update
+                module_result['changed'] = True
+                if module.params['save_config']:
+                    client.save_config()
+            else:
+                module_result['changed'] = False
+
+            # Sanity check for state
+            if not module.check_mode:
+                if not gslb_service_exists(client, module):
+                    module.fail_json(msg='GSLB service does not exist', **module_result)
+                if not gslb_service_identical(client, module, gslb_service_proxy):
+                    module.fail_json(
+                        msg='GSLB service differs from configured',
+                        diff=diff_list(client, module, gslb_service_proxy),
+                        **module_result
+                    )
+                if not monitor_bindings_identical(client, module):
+                    module.fail_json(
+                        msg='Monitor bindings differ from configured',
+                        diff=diff_list(client, module, gslb_service_proxy),
+                        **module_result
+                    )
+
+        elif module.params['state'] == 'absent':
+            if gslb_service_exists(client, module):
+                if not module.check_mode:
+                    gslb_service_proxy.delete()
+                    if module.params['save_config']:
+                        client.save_config()
+                module_result['changed'] = True
+            else:
+                module_result['changed'] = False
+
+            # Sanity check for state
+            if not module.check_mode:
+                if gslb_service_exists(client, module):
+                    module.fail_json(msg='GSLB service still exists', **module_result)
+
+    except nitro_exception as e:
+        msg = "nitro exception errorcode=%s, message=%s" % (str(e.errorcode), e.message)
+        module.fail_json(msg=msg, **module_result)
+
+    client.logout()
+    module.exit_json(**module_result)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/test/integration/roles/netscaler_gslb_service/defaults/main.yaml b/test/integration/roles/netscaler_gslb_service/defaults/main.yaml
new file mode 100644
index 00000000000..641801f6600
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/defaults/main.yaml
@@ -0,0 +1,6 @@
+---
+testcase: "*"
+test_cases: []
+
+nitro_user: nsroot
+nitro_pass: nsroot
diff --git a/test/integration/roles/netscaler_gslb_service/tasks/main.yaml b/test/integration/roles/netscaler_gslb_service/tasks/main.yaml
new file mode 100644
index 00000000000..36fde513843
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tasks/main.yaml
@@ -0,0 +1,7 @@
+---
+
+- { include: testbed.yaml, state: present }
+
+- { include: nitro.yaml, tags: ['nitro'] }
+
+- { include: testbed.yaml, state: absent }
diff --git a/test/integration/roles/netscaler_gslb_service/tasks/nitro.yaml b/test/integration/roles/netscaler_gslb_service/tasks/nitro.yaml
new file mode 100644
index 00000000000..00ab502dda9
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tasks/nitro.yaml
@@ -0,0 +1,14 @@
+- name: collect all nitro test cases
+  find:
+    paths: "{{ role_path }}/tests/nitro"
+    patterns: "{{ testcase }}.yaml"
+  register: test_cases
+
+- name: set test_items
+  set_fact: test_items="{{ test_cases.files | map(attribute='path') | list }}"
+
+- name: run test case
+  include: "{{ test_case_to_run }}"
+  with_items: "{{ test_items }}"
+  loop_control:
+    loop_var: test_case_to_run
diff --git a/test/integration/roles/netscaler_gslb_service/tasks/testbed.yaml b/test/integration/roles/netscaler_gslb_service/tasks/testbed.yaml
new file mode 100644
index 00000000000..f38fc4f015d
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tasks/testbed.yaml
@@ -0,0 +1,34 @@
+---
+
+- name: Setup gslb site
+  delegate_to: localhost
+  netscaler_gslb_site:
+    nitro_user: "{{nitro_user}}"
+    nitro_pass: "{{nitro_pass}}"
+    nsip: "{{nsip}}"
+
+    state: "{{ state }}"
+
+    sitename: gslb-site-1
+    siteipaddress: 192.168.1.1
+    sitetype: LOCAL
+    publicip: 192.168.1.1
+    metricexchange: ENABLED
+    nwmetricexchange: ENABLED
+    sessionexchange: ENABLED
+    triggermonitor: ALWAYS
+
+- name: setup lb monitor
+  delegate_to: localhost
+  netscaler_lb_monitor:
+    nitro_user: "{{nitro_user}}"
+    nitro_pass: "{{nitro_pass}}"
+    nsip: "{{nsip}}"
+
+    state: "{{ state }}"
+
+    monitorname: lb-monitor-1
+    type: TCP-ECV
+
+    send: sendstring
+    recv: recvstring
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/remove.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/remove.yaml
new file mode 100644
index 00000000000..ee39fec378c
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/remove.yaml
@@ -0,0 +1,12 @@
+---
+
+- name: Setup gslb service cname
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: absent
+
+    servicename: gslb-service-2
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/setup.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/setup.yaml
new file mode 100644
index 00000000000..65717b686ea
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/setup.yaml
@@ -0,0 +1,14 @@
+---
+
+- name: Setup gslb service 2
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: present
+
+    servicename: gslb-service-2
+    cnameentry: example.com
+    sitename: gslb-site-1
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/update.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/update.yaml
new file mode 100644
index 00000000000..5509d808a36
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/cname/update.yaml
@@ -0,0 +1,15 @@
+---
+
+- name: Setup gslb service 2
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: present
+
+    servicename: gslb-service-2
+    cnameentry: example.com
+    comment: added comment
+    sitename: gslb-site-1
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/http.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/http.yaml
new file mode 100644
index 00000000000..1d61889fa38
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/http.yaml
@@ -0,0 +1,85 @@
+---
+
+- include: "{{ role_path }}/tests/nitro/http/setup.yaml"
+  vars:
+    check_mode: yes
+
+- assert:
+    that: result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/setup.yaml"
+  vars:
+    check_mode: no
+
+- assert:
+    that: result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/setup.yaml"
+  vars:
+    check_mode: yes
+
+- assert:
+    that: not result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/setup.yaml"
+  vars:
+    check_mode: no
+
+- assert:
+    that: not result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/update.yaml"
+  vars:
+    check_mode: yes
+
+- assert:
+    that: result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/update.yaml"
+  vars:
+    check_mode: no
+
+- assert:
+    that: result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/update.yaml"
+  vars:
+    check_mode: yes
+
+- assert:
+    that: not result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/update.yaml"
+  vars:
+    check_mode: no
+
+- assert:
+    that: not result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/remove.yaml"
+  vars:
+    check_mode: yes
+
+- assert:
+    that: result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/remove.yaml"
+  vars:
+    check_mode: no
+
+- assert:
+    that: result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/remove.yaml"
+  vars:
+    check_mode: yes
+
+- assert:
+    that: not result|changed
+
+- include: "{{ role_path }}/tests/nitro/http/remove.yaml"
+  vars:
+    check_mode: no
+
+- assert:
+    that: not result|changed
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/http/remove.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/http/remove.yaml
new file mode 100644
index 00000000000..2fb8386076b
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/http/remove.yaml
@@ -0,0 +1,15 @@
+---
+
+- name: Remove gslb service
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    nitro_user: "{{nitro_user}}"
+    nitro_pass: "{{nitro_pass}}"
+    nsip: "{{nsip}}"
+
+    state: absent
+    servicename: gslb-service-1
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/http/setup.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/http/setup.yaml
new file mode 100644
index 00000000000..4b4a0bc46b9
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/http/setup.yaml
@@ -0,0 +1,39 @@
+---
+
+- name: Setup gslb service
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    nitro_user: "{{nitro_user}}"
+    nitro_pass: "{{nitro_pass}}"
+    nsip: "{{nsip}}"
+
+    servicename: gslb-service-1
+    servicetype: HTTP
+    sitename: gslb-site-1
+    ipaddress: 10.10.10.11
+    port: 80
+    publicip: 10.10.10.11
+    publicport: 80
+    maxclient: 100
+    healthmonitor: "NO"
+    cip: enabled
+    cipheader: hello
+    sitepersistence: NONE
+    siteprefix: prefix
+    clttimeout: 100
+    maxbandwidth: 100
+    downstateflush: enabled
+    maxaaausers: 100
+    monthreshold: 500
+    hashid: 10
+    comment: cool gslb service!
+    appflowlog: enabled
+
+    monitor_bindings:
+      -
+        monitor_name: lb-monitor-1
+        weight: 100
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/http/update.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/http/update.yaml
new file mode 100644
index 00000000000..405b550560c
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/http/update.yaml
@@ -0,0 +1,34 @@
+---
+
+- name: Setup gslb service
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    nitro_user: "{{nitro_user}}"
+    nitro_pass: "{{nitro_pass}}"
+    nsip: "{{nsip}}"
+
+    servicename: gslb-service-1
+    servicetype: HTTP
+    sitename: gslb-site-1
+    ipaddress: 10.10.10.11
+    port: 80
+    publicip: 10.10.10.11
+    publicport: 80
+    maxclient: 100
+    healthmonitor: "NO"
+    cip: enabled
+    cipheader: hello
+    sitepersistence: NONE
+    siteprefix: prefix
+    clttimeout: 100
+    maxbandwidth: 100
+    downstateflush: enabled
+    maxaaausers: 100
+    monthreshold: 500
+    hashid: 10
+    comment: some other comment
+    appflowlog: enabled
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/remove.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/remove.yaml
new file mode 100644
index 00000000000..a5577102977
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/remove.yaml
@@ -0,0 +1,12 @@
+---
+
+- name: Remove gslb-service-3
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: absent
+
+    servicename: gslb-service-3
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/setup.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/setup.yaml
new file mode 100644
index 00000000000..2060b34972a
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/setup.yaml
@@ -0,0 +1,16 @@
+---
+
+- name: Setup gslb service 3
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: present
+
+    servicename: gslb-service-3
+    servername: 10.10.10.10
+    servicetype: HTTP
+    port: 80
+    sitename: gslb-site-1
diff --git a/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/update.yaml b/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/update.yaml
new file mode 100644
index 00000000000..814edae69d4
--- /dev/null
+++ b/test/integration/roles/netscaler_gslb_service/tests/nitro/servername/update.yaml
@@ -0,0 +1,17 @@
+---
+
+- name: Setup gslb service 3
+
+  delegate_to: localhost
+  register: result
+  check_mode: "{{ check_mode }}"
+
+  netscaler_gslb_service:
+    operation: present
+
+    servicename: gslb-service-3
+    servername: 10.10.10.10
+    servicetype: HTTP
+    port: 80
+    comment: added comment
+    sitename: gslb-site-1
diff --git a/test/integration/roles/netscaler_service/tests/nitro/http_service/setup.yaml b/test/integration/roles/netscaler_service/tests/nitro/http_service/setup.yaml
index c55aaac95b9..9f58802ac6a 100644
--- a/test/integration/roles/netscaler_service/tests/nitro/http_service/setup.yaml
+++ b/test/integration/roles/netscaler_service/tests/nitro/http_service/setup.yaml
@@ -23,7 +23,6 @@
     cipheader: client-ip
     usip: yes
     useproxyport: yes
-    sc: off
     sp: off
     rtspsessionidremap: off
     clttimeout: 100
diff --git a/test/integration/roles/netscaler_service/tests/nitro/http_service/update.yaml b/test/integration/roles/netscaler_service/tests/nitro/http_service/update.yaml
index 21640617a7f..b606423da54 100644
--- a/test/integration/roles/netscaler_service/tests/nitro/http_service/update.yaml
+++ b/test/integration/roles/netscaler_service/tests/nitro/http_service/update.yaml
@@ -23,7 +23,6 @@
     cipheader: client-ip
     usip: yes
     useproxyport: yes
-    sc: off
     sp: off
     rtspsessionidremap: off
     clttimeout: 100
@@ -40,7 +39,6 @@
     comment: some comment
     appflowlog: ENABLED
     processlocal: ENABLED
-    netprofile: net-profile-1
 
     monitor_bindings:
       - monitorname: http
diff --git a/test/units/modules/network/netscaler/test_netscaler_gslb_service.py b/test/units/modules/network/netscaler/test_netscaler_gslb_service.py
new file mode 100644
index 00000000000..0f57ae7fedf
--- /dev/null
+++ b/test/units/modules/network/netscaler/test_netscaler_gslb_service.py
@@ -0,0 +1,730 @@
+
+#  Copyright (c) 2017 Citrix Systems
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+from ansible.compat.tests.mock import patch, Mock, MagicMock, call
+from .netscaler_module import TestModule, nitro_base_patcher, set_module_args
+
+import sys
+
+if sys.version_info[:2] != (2, 6):
+    import requests
+
+
+class TestNetscalerGSLBSiteModule(TestModule):
+
+    @classmethod
+    def setUpClass(cls):
+        class MockException(Exception):
+            pass
+
+        cls.MockException = MockException
+
+        m = MagicMock()
+        nssrc_modules_mock = {
+            'nssrc.com.citrix.netscaler.nitro.resource.config.gslb': m,
+            'nssrc.com.citrix.netscaler.nitro.resource.config.gslb.gslbservice': m,
+            'nssrc.com.citrix.netscaler.nitro.resource.config.gslb.gslbservice.gslbservice': m,
+            'nssrc.com.citrix.netscaler.nitro.resource.config.gslb.gslbservice_lbmonitor_binding': m,
+            'nssrc.com.citrix.netscaler.nitro.resource.config.gslb.gslbservice_lbmonitor_binding.gslbservice_lbmonitor_binding': m,
+
+            # The following are needed because of monkey_patch_nitro_api()
+            'nssrc.com.citrix.netscaler.nitro.resource.base': m,
+            'nssrc.com.citrix.netscaler.nitro.resource.base.Json': m,
+            'nssrc.com.citrix.netscaler.nitro.resource.base.Json.Json': m,
+            'nssrc.com.citrix.netscaler.nitro.util': m,
+            'nssrc.com.citrix.netscaler.nitro.util.nitro_util': m,
+            'nssrc.com.citrix.netscaler.nitro.util.nitro_util.nitro_util': m,
+        }
+
+        cls.nitro_specific_patcher = patch.dict(sys.modules, nssrc_modules_mock)
+        cls.nitro_base_patcher = nitro_base_patcher
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.nitro_base_patcher.stop()
+        cls.nitro_specific_patcher.stop()
+
+    def setUp(self):
+        self.nitro_base_patcher.start()
+        self.nitro_specific_patcher.start()
+
+        # Setup minimal required arguments to pass AnsibleModule argument parsing
+
+    def tearDown(self):
+        self.nitro_base_patcher.stop()
+        self.nitro_specific_patcher.stop()
+
+    def test_graceful_nitro_api_import_error(self):
+        # Stop nitro api patching to cause ImportError
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        self.nitro_base_patcher.stop()
+        self.nitro_specific_patcher.stop()
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+        self.module = netscaler_gslb_service
+        result = self.failed()
+        self.assertEqual(result['msg'], 'Could not load nitro python sdk')
+
+    def test_graceful_nitro_error_on_login(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        class MockException(Exception):
+            def __init__(self, *args, **kwargs):
+                self.errorcode = 0
+                self.message = ''
+
+        client_mock = Mock()
+        client_mock.login = Mock(side_effect=MockException)
+        m = Mock(return_value=client_mock)
+        with patch('ansible.modules.network.netscaler.netscaler_gslb_service.get_nitro_client', m):
+            with patch('ansible.modules.network.netscaler.netscaler_gslb_service.nitro_exception', MockException):
+                self.module = netscaler_gslb_service
+                result = self.failed()
+                self.assertTrue(result['msg'].startswith('nitro exception'), msg='nitro exception during login not handled properly')
+
+    def test_graceful_no_connection_error(self):
+
+        if sys.version_info[:2] == (2, 6):
+            self.skipTest('requests library not available under python2.6')
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        class MockException(Exception):
+            pass
+        client_mock = Mock()
+        attrs = {'login.side_effect': requests.exceptions.ConnectionError}
+        client_mock.configure_mock(**attrs)
+        m = Mock(return_value=client_mock)
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            nitro_exception=MockException,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertTrue(result['msg'].startswith('Connection error'), msg='Connection error was not handled gracefully')
+
+    def test_graceful_login_error(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        if sys.version_info[:2] == (2, 6):
+            self.skipTest('requests library not available under python2.6')
+
+        class MockException(Exception):
+            pass
+        client_mock = Mock()
+        attrs = {'login.side_effect': requests.exceptions.SSLError}
+        client_mock.configure_mock(**attrs)
+        m = Mock(return_value=client_mock)
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            monkey_patch_nitro_api=Mock(),
+            nitro_exception=MockException,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertTrue(result['msg'].startswith('SSL Error'), msg='SSL Error was not handled gracefully')
+
+    def test_ensure_feature_is_enabled_called(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        gslb_service_proxy_mock = Mock()
+        ensure_feature_is_enabled_mock = Mock()
+        client_mock = Mock()
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=Mock(return_value=client_mock),
+            gslb_service_exists=Mock(side_effect=[False, True]),
+            gslb_service_identical=Mock(side_effect=[True]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=ensure_feature_is_enabled_mock,
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=Mock(return_value=gslb_service_proxy_mock),
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            ensure_feature_is_enabled_mock.assert_called_with(client_mock, 'GSLB')
+
+    def test_save_config_called_on_state_present(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        gslb_service_proxy_mock = Mock()
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            gslb_service_exists=Mock(side_effect=[False, True]),
+            gslb_service_identical=Mock(side_effect=[True]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=Mock(return_value=gslb_service_proxy_mock),
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            self.assertIn(call.save_config(), client_mock.mock_calls)
+
+    def test_save_config_called_on_state_absent(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='absent',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        gslb_service_proxy_mock = Mock()
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            gslb_service_exists=Mock(side_effect=[True, False]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=Mock(return_value=gslb_service_proxy_mock),
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            self.assertIn(call.save_config(), client_mock.mock_calls)
+
+    def test_save_config_not_called_on_state_present(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+            save_config=False,
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        gslb_service_proxy_mock = Mock()
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            gslb_service_exists=Mock(side_effect=[False, True]),
+            gslb_service_identical=Mock(side_effect=[True]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=Mock(return_value=gslb_service_proxy_mock),
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            self.assertNotIn(call.save_config(), client_mock.mock_calls)
+
+    def test_save_config_not_called_on_state_absent(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='absent',
+            save_config=False,
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        gslb_service_proxy_mock = Mock()
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            gslb_service_exists=Mock(side_effect=[True, False]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=Mock(return_value=gslb_service_proxy_mock),
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            self.assertNotIn(call.save_config(), client_mock.mock_calls)
+
+    def test_new_gslb_site_execution_flow(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            gslb_service_exists=Mock(side_effect=[False, True]),
+            gslb_service_identical=Mock(side_effect=[True]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            gslb_service_proxy_mock.assert_has_calls([call.add()])
+
+    def test_modified_gslb_site_execution_flow(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[True, True]),
+            gslb_service_identical=Mock(side_effect=[False, False, True]),
+            monitor_bindings_identical=Mock(side_effect=[True, True, True]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            nitro_exception=self.MockException,
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            gslb_service_proxy_mock.assert_has_calls([call.update()])
+
+    def test_absent_gslb_site_execution_flow(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='absent',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[True, False]),
+            gslb_service_identical=Mock(side_effect=[False, True]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            gslb_service_proxy_mock.assert_has_calls([call.delete()])
+
+    def test_present_gslb_service_identical_flow(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[True, True]),
+            gslb_service_identical=Mock(side_effect=[True, True]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            gslb_service_proxy_mock.assert_not_called()
+
+    def test_absent_gslb_site_noop_flow(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='absent',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[False, False]),
+            gslb_service_identical=Mock(side_effect=[False, False]),
+            nitro_exception=self.MockException,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            self.exited()
+            gslb_service_proxy_mock.assert_not_called()
+
+    def test_present_gslb_site_failed_update(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            nitro_exception=self.MockException,
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[True, True]),
+            gslb_service_identical=Mock(side_effect=[False, False, False]),
+            monitor_bindings_identical=Mock(side_effect=[True, True, True]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertEqual(result['msg'], 'GSLB service differs from configured')
+            self.assertTrue(result['failed'])
+
+    def test_present_gslb_site_failed_monitor_bindings_update(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            nitro_exception=self.MockException,
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[True, True]),
+            gslb_service_identical=Mock(side_effect=[False, False, True]),
+            monitor_bindings_identical=Mock(side_effect=[False, False, False]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertEqual(result['msg'], 'Monitor bindings differ from configured')
+            self.assertTrue(result['failed'])
+
+    def test_present_gslb_site_failed_create(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            nitro_exception=self.MockException,
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[False, False]),
+            gslb_service_identical=Mock(side_effect=[False, False]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertEqual(result['msg'], 'GSLB service does not exist')
+            self.assertTrue(result['failed'])
+
+    def test_present_gslb_site_update_immutable_attribute(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            nitro_exception=self.MockException,
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=['domain']),
+            gslb_service_exists=Mock(side_effect=[True, True]),
+            gslb_service_identical=Mock(side_effect=[False, False]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertEqual(result['msg'], 'Cannot update immutable attributes [\'domain\']')
+            self.assertTrue(result['failed'])
+
+    def test_absent_gslb_site_failed_delete(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='absent',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        client_mock = Mock()
+
+        m = Mock(return_value=client_mock)
+
+        glsb_service_proxy_attrs = {
+            'diff_object.return_value': {},
+        }
+        gslb_service_proxy_mock = Mock()
+        gslb_service_proxy_mock.configure_mock(**glsb_service_proxy_attrs)
+        config_proxy_mock = Mock(return_value=gslb_service_proxy_mock)
+
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            nitro_exception=self.MockException,
+            get_nitro_client=m,
+            diff_list=Mock(return_value={}),
+            get_immutables_intersection=Mock(return_value=[]),
+            gslb_service_exists=Mock(side_effect=[True, True]),
+            gslb_service_identical=Mock(side_effect=[False, False]),
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            ConfigProxy=config_proxy_mock,
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertEqual(result['msg'], 'GSLB service still exists')
+            self.assertTrue(result['failed'])
+
+    def test_graceful_nitro_exception_state_present(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='present',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        class MockException(Exception):
+            def __init__(self, *args, **kwargs):
+                self.errorcode = 0
+                self.message = ''
+
+        m = Mock(side_effect=MockException)
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            gslb_service_exists=m,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            nitro_exception=MockException
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertTrue(
+                result['msg'].startswith('nitro exception'),
+                msg='Nitro exception not caught on operation absent'
+            )
+
+    def test_graceful_nitro_exception_state_absent(self):
+        set_module_args(dict(
+            nitro_user='user',
+            nitro_pass='pass',
+            nsip='1.1.1.1',
+            state='absent',
+        ))
+        from ansible.modules.network.netscaler import netscaler_gslb_service
+
+        class MockException(Exception):
+            def __init__(self, *args, **kwargs):
+                self.errorcode = 0
+                self.message = ''
+
+        m = Mock(side_effect=MockException)
+        with patch.multiple(
+            'ansible.modules.network.netscaler.netscaler_gslb_service',
+            gslb_service_exists=m,
+            ensure_feature_is_enabled=Mock(),
+            monkey_patch_nitro_api=Mock(),
+            nitro_exception=MockException
+        ):
+            self.module = netscaler_gslb_service
+            result = self.failed()
+            self.assertTrue(
+                result['msg'].startswith('nitro exception'),
+                msg='Nitro exception not caught on operation absent'
+            )