Creating an AWS EC2 Resource (RouteTable Scenario)

Here we will discuss how the Route Table can be used to switch between nodes by creating an entry in the Route Table that points to the active node.

Create an IP Resource

Now you can create an IP resource. Note that the IP address of the resource must be located outside of the VPC. In this example, the IP resource is created using 10.10.10.10 (the VPC is defined as 10.20.0.0/16). Refer to Creating an IP Resource for more information.

Once the IP resource has been created, the LifeKeeper User Interface should look like this.

Assign Permission to Update Route Table Entries to Instances

!To complete the steps below, the AWS CLI must be installed on each node.

• Install AWS CLI

• Assign Permission to Use EC2 Recovery Kit

Add Initial Route Table Entry for the Primary Host

Before creating the EC2 resource, we must first add the initial route to the route table for LK-VPC (i.e., LK-RouteTable).

1. In the AWS Console, navigate to Services → VPC → Route Tables, click the route table associated with LK-VPC (LK-RouteTable), click the Routes tab, then click Edit Routes.

2. In the resulting dialog, add a new route with the following parameters:

3. Click Save changes to add the route to the route table.

Creating an EC2 Resource (Route Table Scenario)

!Before creating the EC2 resource, ensure that source/destination checking has been disabled for all cluster nodes by following the steps given in AWS – Disable Source/Destination Checking.

Creating an EC2 Resource should be straightforward once an IP Resource has been created.

1. Select the icon to start the “Create Resource Wizard”.

2. Select “Amazon EC2” as the Recovery Kit.

3. On the “Create Resource Wizard @ node-a”, specify the following values.

*Note: For items with a checkmark ( ) review the default value and use the value suggested.

Field	Value
Switchback Type	Intelligent
Server	node-a
EC2 Resource Type	Route Table (Backend Cluster)
IP Resource	ip-10.10.10.10
EC2 Resource Tag	ec2-10.10.10.10

4. On the “Pre-Extend Wizard” specify the following values:

Field	Value
Target Server	node-b
Switchback Type	Intelligent
Template Priority	1
Target Priority	10

5. Once Pre-Extend is completed, move on to “Extend comm/ec2 Resource”. Select “ec2-10.10.10.10”.

6. Once “Hierarchy successfully extended” is displayed, the creation of the resource is now complete.

7. The EC2 resource is created as shown below.