Confirm HA Across AZ iApp
-------------------------

The CloudFormation template will automatically create a device trust between Big-IP1 in Availability Zone #1 and Big-IP2 in Availability Zone #2, resulting in a working HA f5 cluster in AWS. To confirm: Device Management => Device Trust.

.. image:: ./images/1_device_trust.png
  :scale: 50%

From the Big-IP1 Configuration Utility (WebUI), iApps => Application Services => Applications => HA_Across_AZ. The F5 CloudFormation template has automatically installed and configured the HA_Across_AZ iApp that maps a shared Elastic IP to the active Big-IP. This elastic IP is ready to automatically attach to the standby unit (thus making it active) if there is a problem/outage in the AZ.

.. image:: ./images/2_ha_across_az.png
  :scale: 50%

Explore instance tags for web servers
-------------------------------------

Services => INSTANCES => Instances => web-az1. Select the "Tags" tab below. Note the "findme : web" tag.
Do the same for web-az2.
Services => INSTANCES => Instances => web-az2. Select the "Tags" tab below. Note the "findme : web" tag.
We'll use these tags to auto-discover these NGINX web servers as pool members.

.. image:: ./images/2a_ec2_web_server_tags.png
  :scale: 50%

Dynamically discover and populate web server pools with the Service Discovery iApp
----------------------------------------------------------------------------------

On Big-IP1, iApps => Application Services => Applications => Create New Application Service.

  Name: service_discovery

  Template: f5.service_discovery

Fill in the iApp template parameters. Leave defaults where not explicitly called out below.

+--------------------------------------------------------+------------------------------------------------------+
| Parameter                                              | Value                                                |
+========================================================+======================================================+
| **Cloud Provider**                                                                                            |
+--------------------------------------------------------+------------------------------------------------------+
| In which cloud provider are the pool members deployed? | US West(Oregon                                       |
+--------------------------------------------------------+------------------------------------------------------+
| Pool                                                                                                          |
+--------------------------------------------------------+------------------------------------------------------+
| What is the tag key on your cloud provider             | findme                                               |
| for the members of this pool?                          |                                                      |
+--------------------------------------------------------+------------------------------------------------------+
| What is the tag value on your cloud provider           | web                                                  |
| for the members of this pool?                          |                                                      |
+--------------------------------------------------------+------------------------------------------------------+

Scroll down and click [Finished].

.. image:: ./images/3_service_discovery1.png
  :scale: 50%

.. image:: ./images/3_service_discovery2.png
  :scale: 50%

.. image:: ./images/3_service_discovery_finished.png
  :scale: 50%

Local Traffic => Pools => service_discovery_pool has been created.

.. image:: ./images/4_service_discovery_pool_created.png
  :scale: 50%

Local Traffic => Pools => service_discovery_pool => members. Pool members have been auto-populated.

.. image:: ./images/5_service_discovery_pool_members.png
  :scale: 50%

On the standby Big-IP, Local Traffic => Pools => service_discovery_pool. The service_discovery_pool is ready on the standby unit as well. Config sync works.

.. image:: ./images/6_service_discovery_pool_members_standby_bigip.png
  :scale: 50%